MCP Memento
Integrates with Google's Gemini CLI agent to provide a persistent knowledge base, enabling the agent to save and retrieve information such as bug fixes and configuration details.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@MCP Mementostore the fix for the Redis timeout issue we just resolved"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP Memento
Intelligent memory management for MCP clients with confidence tracking, relationship mapping, and knowledge quality maintenance.
Memento is an MCP server that provides persistent memory capabilities across multiple platforms:
IDEs: Zed, Cursor, Windsurf, VSCode, Claude Desktop
CLI Agents: Gemini CLI, Claude CLI, custom agents
Programmatic Usage: MCP client (Python), Docker deployment, CLI export/import
Applications: Any MCP-compatible application
Build a personal or team knowledge base that grows smarter over time, accessible from all your development tools.
Table of Contents
Related MCP server: @contextable/mcp
🌱 A Gentle Introduction
What is Memento? Imagine you're solving a complex bug, figuring out a tricky configuration, or establishing a new coding pattern. Usually, you'd forget the details in a few weeks. Memento is a "long-term memory drive" for your AI assistant. It allows your AI to save these solutions, decisions, and facts so it can recall them instantly across different projects, even months later.
💡 The Agentic Mindset: A Guide for Traditional Developers If you are used to deterministic software (where things happen automatically because a script says so), interacting with AI agents requires a slight mental shift.
Memento is not an autonomous agent that watches your screen and magically decides what to remember. Instead, Memento is a toolbelt provided to your AI assistant (like Claude, Cursor, or Gemini).
The AI is the worker: It needs to be told when to use the toolbelt. Nothing is saved without explicit instruction or a pre-defined rule.
You are the manager: You control what gets stored. You can either tell the AI during a chat ("Save this database connection string"), or you can give the AI standard operating procedures (via system prompts or
.cursorrules/CLAUDE.mdfiles) so it knows to automatically save certain things, like bug fixes or architecture decisions.
How to build the habit:
Start of session: Ask your AI, "What do we know about the authentication system?" to pull context.
During work: When you fix a tricky issue, say, "We fixed the Redis timeout. Store this solution."
End of session: Tell your AI, "Store a summary of what we accomplished today."
Alternatively, you can add custom instructions to your AI (see our Agent Configuration Guide) to make it automatically execute these steps without you having to ask every time.
✨ Key Features
🧠 Intelligent Confidence System
Automatic decay: Unused knowledge loses confidence over time (5% monthly)
Critical protection: Security/auth/API key memories never decay
Boost on validation: Confidence increases when knowledge is successfully used
Smart ordering: Search results ranked by
confidence × importance
🔗 Relationship Mapping
35 relationship types: SOLVES, CAUSES, IMPROVES, USED_IN, etc. across 7 semantic categories (see Relationship Types Reference)
Graph navigation: Find connections between concepts
Pattern detection: Identify recurring solution patterns
📊 Three Profile System
Profile | Tools | Best For |
Core | 13 tools | All users - Essential operations |
Extended | 17 tools | Power users - Statistics, contextual search, decay control |
Advanced | 25 tools | Administrators - Graph analysis |
🗃️ Cross-Platform Storage
SQLite backend: Zero dependencies, local storage
Full-text search: Fast, fuzzy matching across all memories
Automatic maintenance: Confidence decay, relationship integrity
Shared database: Same database works across all integrations
🚀 Quick Start
1. Installation
# Install with pipx (recommended for MCP servers)
pipx install mcp-memento
# Or with pip
pip install mcp-memento2. Basic Configuration
Memento supports multiple configuration methods. For clarity, we recommend using one method consistently:
Method 1: CLI Arguments (recommended - most explicit)
{
"mcpServers": {
"memento": {
"command": "memento",
"args": ["--profile", "extended", "--db", "~/.mcp-memento/context.db"]
}
}
}Method 2: Environment Variables
{
"mcpServers": {
"memento": {
"command": "memento",
"args": [],
"env": {
"MEMENTO_PROFILE": "extended",
"MEMENTO_DB_PATH": "~/.mcp-memento/context.db"
}
}
}
}Method 3: YAML Configuration File
Create ~/.mcp-memento/config.yaml:
profile: extended
db_path: ~/.mcp-memento/context.dbThen use minimal JSON config:
{
"mcpServers": {
"memento": {
"command": "memento",
"args": []
}
}
}CLI Agents (Gemini CLI):
gemini --mcp-servers mementoNote: The exact flag syntax depends on your Gemini CLI version. Refer to AGENT_CONFIGURATION.md for version-specific setup instructions.
3. First Steps
Once configured, your AI assistant can now:
# Store solutions and knowledge
store_memento(
type="solution",
title="Fixed Redis timeout with connection pooling",
content="Increased connection timeout to 30s and added connection pooling...",
tags=["redis", "timeout", "production_fix"],
importance=0.8
)
# Find knowledge later
recall_mementos(query="Redis timeout solutions")📌 Note: The code above represents MCP tool calls — instructions you give your AI assistant (Claude, Cursor, Gemini, etc.) to invoke Memento's tools. This is not a Python library you can
import. For programmatic Python access see the Python Integration Guide.
💬 Natural Language: You can also interact with Memento through natural conversation. Just tell your AI assistant things like "Remember that..." or "Store this..." or "Memento..."- no code required.
📖 Core Concepts
For a deep dive into Memento's concepts (Confidence System, Tagging, Relationships), please read the comprehensive RULES.md and RELATIONSHIPS.md documentation.
🔗 Integrations
Memento works with all major development tools:
Platform | Configuration Guide | Notes |
Zed Editor | Native MCP support | |
Cursor | AI-powered editor | |
Windsurf | Modern code editor | |
VSCode | Via MCP extension | |
Claude Desktop | Desktop application | |
Gemini CLI | Google's CLI agent | |
Claude CLI | Anthropic's CLI agent | |
Python / MCP Client | Embed server or call via MCP client | |
Docker / CLI | MCP client, Docker, export/import |
See also: Integration Overview for guidance on choosing the right integration.
🛠️ Basic Usage Examples
The examples below show the MCP tool calls that an AI assistant (Zed, Cursor, Claude, Gemini CLI, …) executes on your behalf when you ask it to remember or retrieve something. They are written in a Python-like pseudocode that mirrors the MCP tool interface — they are not a Python library you import directly.
To call these tools programmatically from Python, use the
mcpclient library. See Python Integration for a working example.
Store and Retrieve Knowledge
# Store a solution — the AI calls this tool when you say "remember this fix"
solution_id = store_memento(
type="solution",
title="Fixed memory leak in WebSocket handler",
content="Added proper cleanup in on_close()...",
tags=["websocket", "memory", "python"],
importance=0.9
)
# Natural language search — called when you ask "what do you know about X"
results = recall_mementos(query="WebSocket memory leak", limit=5)
# Tag-based search — for precise filtering
redis_solutions = search_mementos(tags=["redis"], memory_types=["solution"])Manage Confidence
# Find potentially obsolete knowledge
low_confidence = get_low_confidence_mementos(threshold=0.3)
# Boost confidence after verification
boost_memento_confidence(
memory_id=verified_solution_id,
boost_amount=0.15,
reason="Verified in production deployment"
)Create Relationships
# Link solution to problem
create_memento_relationship(
from_memory_id=solution_id,
to_memory_id=problem_id,
relationship_type="SOLVES", # See all 35 types in docs/RELATIONSHIPS.md
strength=0.9,
context="Connection pooling resolved the timeout issue"
)
# Explore connected knowledge
related = get_related_mementos(
memory_id=solution_id,
relationship_types=["RELATED_TO", "USED_IN"],
max_depth=2
)Natural Language Interaction (Chat-Based)
Memento works through natural language conversations. The AI assistant interprets intent and calls the appropriate tools automatically.
Store information:
User: Remember that we solved Redis timeout with connection pooling
AI: ✅ Memento stored - "Redis timeout solution: connection pooling"Retrieve knowledge:
User: What do you remember about Redis timeout?
AI: Found 2 solutions: 1) Connection pooling... 2) Query optimization...Using the "Memento" keyword:
User: Memento the deployment script is in /scripts/deploy.sh
AI: ✅ Memento stored - "Deployment script location: /scripts/deploy.sh"The AI can also store important information automatically when configured with the guidelines in AGENT_CONFIGURATION.md.
⚙️ Configuration
Memento supports multiple configuration sources (in order of precedence):
Command-Line Arguments (highest priority)
memento --profile advanced --db ~/custom/path/memento.db --log-level DEBUGEnvironment Variables
export MEMENTO_PROFILE="advanced" export MEMENTO_DB_PATH="~/custom/path/memento.db" export MEMENTO_LOG_LEVEL="DEBUG" export MEMENTO_ALLOW_CYCLES="false" # Allow cycles in relationship graphYAML Configuration Files
Project config:
./memento.yamlin current directory (overrides global)Global config:
~/.mcp-memento/config.yaml
Priority Order: CLI Arguments > Environment Variables > Project YAML > Global YAML > Defaults
Default Values (lowest priority)
Supported YAML Keys
The following keys are read and applied by the configuration loader. Any other keys present in the YAML file are silently ignored.
Key | Type | Default | Description |
| string |
| SQLite database file path |
| string |
| Tool profile ( |
| string |
| Log level ( |
| bool |
| Allow cyclic relationships in the graph |
Note: The
memento.yamltemplate shipped with the project contains additional commented sections (confidence,search,performance,memory,fts,project). These are not yet implemented — they are aspirational placeholders for future releases and have no effect on the current server behaviour.
Example Configuration Files
Project configuration (./memento.yaml):
db_path: ~/.mcp-memento/context.db
profile: extended
logging:
level: INFO
features:
allow_relationship_cycles: falseGlobal configuration (~/.mcp-memento/config.yaml):
db_path: ~/.mcp-memento/global.db
profile: extended
logging:
level: INFO📚 Documentation Structure
Essential Guides
Tools Reference - Complete guide to all MCP tools
Confidence System - How confidence tracking works
Relationship Types - All 35 relationship types with examples
Usage Rules - Best practices and conventions
Agent Configuration - Templates for AI agents
Integration Guides
Integration Overview - Choosing the right integration
IDE Integration - Zed, Cursor, Windsurf, VSCode, Claude Desktop
Python Integration - MCP client usage, server embedding, CLI export/import
Agent Integration - CLI agents and custom applications
API & Programmatic Integration - MCP client (Python), Docker deployment, CLI export/import
Development & Advanced Topics
Database Schema - Technical database structure
Contributing Guidelines - Development setup and workflow
🏗️ Architecture Overview
Database Schema
Memento uses a unified SQLite schema accessible from all integrations:
Core tables:
nodes(memory storage),relationships(directed graph)Full-text search:
nodes_fts— FTS5 virtual table for fast searching (falls back to LIKE-based search if FTS5 is unavailable)Confidence tracking: Automatic decay with protection for critical memories
Consistent Behavior
The system works identically across all platforms:
Same database: All tools access the same SQLite file
Same confidence tracking: Updates from one tool reflected everywhere
Same search ranking: Results ordered by
confidence × importanceSame relationship types: 35 semantic relationship types available everywhere
📜 Background
Memento is a simplified, lightweight fork of MemoryGraph by Gregory Dickson, optimized for MCP integration across IDEs and CLI agents.
The fork focuses on portability and token efficiency: it removes heavy dependencies (NetworkX, multi-backend storage, bi-temporal tracking, multi-tenant architecture) in favor of a SQLite-only backend with confidence-based decay and guideline-driven storage.
Team Collaboration & Remote Deployment
Multiple users can share a SQLite database (e.g., on network storage) using tagging conventions (team:[name], author:[name]). Memento can also run as a remote MCP server, though all clients share the same database without tenant isolation. See Team Collaboration guidelines for details.
For true multi-tenancy, use the original MemoryGraph project.
When to Choose MemoryGraph vs Memento?
Use Memento: For lightweight, cross-platform memory management in IDEs and CLI tools
Use MemoryGraph: For enterprise use cases requiring multi-tenancy, bi-temporal tracking, or custom backends
🙏 Acknowledgments
Memento is built upon the solid foundation of Gregory Dickson's MemoryGraph project. We're grateful for his pioneering work in memory management systems.
This fork maintains compatibility with MemoryGraph's core concepts while adapting them for the specific needs of MCP integration and modern development tooling. For users requiring the full power of MemoryGraph's advanced features, we recommend exploring the original project.
🧪 Beta Status
mcp-webgate is in beta. Core functionality is stable and the server is used in production, but the configuration API may still change before 1.0.
Feedback is very welcome. If something doesn't work as expected, behaves oddly, or you have a use case that isn't covered:
Bug reports, configuration questions, and feature requests all help shape the roadmap.
🤝 Contributing
Contributions are welcome! Please see CONTRIBUTING.md for detailed guidelines on:
Development setup and workflow
Code style and conventions
Testing requirements
Documentation standards
Pull request process
📄 License
MIT License - see LICENSE for details.
🔗 Links
GitHub Repository - Source code and issues
MCP Protocol - Model Context Protocol specification
PyPI Package - Python Package Index
MCP Registry - Model Context Protocol Registry
Need help? Check the documentation or open an issue on GitHub.
Available Tools
17 toolsadjust_memento_confidenceA
Manually adjust confidence of a relationship.
Use for:
Correcting confidence scores when you know a memory is valid/invalid
Setting custom confidence based on verification
Overriding automatic decay for specific cases
Examples:
adjust_memento_confidence(relationship_id="rel-123", new_confidence=0.9, reason="Verified in production")
adjust_memento_confidence(relationship_id="rel-456", new_confidence=0.1, reason="Obsolete after library update")
Confidence ranges:
0.9-1.0: High confidence (recently validated)
0.7-0.89: Good confidence (regularly used)
0.5-0.69: Moderate confidence (somewhat outdated)
0.3-0.49: Low confidence (likely outdated)
0.0-0.29: Very low confidence (probably obsolete)
| Name | Required | Description | Default |
|---|---|---|---|
| relationship_id | Yes | ID of the relationship to adjust | |
| new_confidence | Yes | New confidence value (0.0-1.0) | |
| reason | No | Reason for the adjustment |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden and does well by disclosing key behavioral traits: it's a manual adjustment tool (not automatic), allows overriding decay, and includes confidence ranges with semantic meaning. However, it doesn't mention potential side effects (e.g., if this affects other systems) or error conditions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is efficiently structured with clear sections (purpose, use cases, examples, confidence ranges), each sentence adds value, and it's front-loaded with the core purpose. No redundant or verbose language.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with no annotations and no output schema, the description provides good context: clear purpose, usage guidelines, parameter semantics, and behavioral context. It could be more complete by mentioning what happens after adjustment (e.g., if it triggers notifications) or error cases, but it covers most essential aspects well.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description adds significant value beyond the schema by providing concrete examples with realistic parameter values and explaining the semantic meaning of confidence ranges (0.9-1.0 = 'High confidence', etc.), which helps the agent understand appropriate values.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with specific verbs ('manually adjust confidence of a relationship') and distinguishes it from siblings like 'apply_memento_confidence_decay' (automatic) and 'boost_memento_confidence' (likely one-directional). It explicitly defines the action on a specific resource type (relationship confidence).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit 'Use for' scenarios with three specific cases (correcting scores, setting custom confidence, overriding decay), giving clear guidance on when to invoke this tool. It implicitly distinguishes from alternatives like automatic decay tools by mentioning 'overriding automatic decay.'
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
apply_memento_confidence_decayA
Apply automatic confidence decay based on last access time.
Use for:
System maintenance to keep knowledge base fresh
Applying intelligent decay rules
Monthly confidence adjustment routine
Intelligent decay rules:
Critical memories (security, auth, api_key, password, critical, no_decay tags): NO DECAY
High importance memories: Reduced decay based on importance score
General knowledge: Standard 5% monthly decay (decay_factor=0.95)
Temporary context: Higher decay rate
Decay formula: monthly_decay = confidence × decay_factor^(months_since_last_access)
Minimum confidence: 0.1 (won't decay below this)
Returns:
Number of relationships updated
Summary of decay applied
Breakdown by memory type
| Name | Required | Description | Default |
|---|---|---|---|
| memory_id | No | Optional memory ID. When provided, applies decay only to relationships of that specific memory (and updates their decay_factor based on the memory's importance and tags). When omitted, applies decay to all relationships system-wide. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes key behavioral traits: the decay rules (e.g., no decay for critical memories, reduced decay for high importance), the decay formula, minimum confidence threshold, and return values. It does not mention side effects like performance impact or permissions required, but covers core behavior well for a maintenance tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (purpose, usage, rules, formula, returns) and avoids redundancy. However, some details like the decay formula and breakdown by memory type could be slightly verbose for a tool description, though they are informative. It's front-loaded with the core purpose, earning its place efficiently.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (applies decay rules system-wide or to specific memories) and lack of annotations or output schema, the description does a good job of covering behavior, rules, and returns. It explains the decay logic, formula, and output summary, which compensates for missing structured fields. A minor gap is no explicit error handling or performance considerations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, clearly explaining the optional memory_id parameter. The description does not add any parameter-specific semantics beyond what the schema provides (e.g., it doesn't clarify format or examples for memory_id). According to the rules, with high schema coverage, the baseline is 3, which is appropriate here.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Apply automatic confidence decay based on last access time.' It specifies the verb ('apply'), resource ('confidence'), and mechanism ('based on last access time'), distinguishing it from siblings like adjust_memento_confidence (manual adjustment) or boost_memento_confidence (increasing confidence).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit usage contexts ('System maintenance to keep knowledge base fresh', 'Applying intelligent decay rules', 'Monthly confidence adjustment routine'), which clearly indicate when to use this tool. However, it does not explicitly state when not to use it or name alternatives (e.g., adjust_memento_confidence for manual adjustments), which prevents a score of 5.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
boost_memento_confidenceA
Boost confidence when a memory is successfully used.
Use for:
Reinforcing valid knowledge
Manual confidence increase for verified information
After successfully applying a solution
When verifying old information is still valid
Usage patterns:
After successfully applying a solution → boost its confidence
When verifying old information is still valid → boost confidence
When multiple team members confirm a pattern → boost confidence
Boost mechanics:
Base boost: +0.10 per access (capped at 1.0)
Additional boost for validation: +0.10 to +0.20
Maximum confidence: 1.0 (cannot exceed)
| Name | Required | Description | Default |
|---|---|---|---|
| memory_id | Yes | ID of the memory to boost confidence for. When provided, boosts confidence on all relationships of that memory. Either memory_id or relationship_id must be specified. | |
| relationship_id | No | ID of a specific relationship to boost confidence for. Use this to target a single relationship instead of all relationships of a memory. Either memory_id or relationship_id must be specified. | |
| boost_amount | No | Amount to boost confidence (default: 0.10) | |
| reason | No | Reason for the boost |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes key behavioral traits: the tool is for increasing confidence (implying mutation), specifies boost mechanics (e.g., base boost amounts, caps, maximum confidence), and outlines usage contexts. However, it lacks details on permissions, error conditions, or response format, which are minor gaps for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections ('Use for:', 'Usage patterns:', 'Boost mechanics:'), making it easy to scan. It is appropriately sized for the tool's complexity, with each sentence adding value (e.g., explaining boost amounts and usage scenarios). However, some redundancy exists (e.g., similar points in 'Use for' and 'Usage patterns'), slightly reducing efficiency.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (mutation with 4 parameters), no annotations, and no output schema, the description provides good contextual completeness. It covers purpose, usage guidelines, and behavioral mechanics, but lacks details on output (e.g., what is returned after boosting) and error handling, which are minor omissions for an agent's understanding.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, so the schema already documents all parameters thoroughly (e.g., memory_id, relationship_id, boost_amount, reason). The description adds minimal value beyond this, as it does not explain parameter interactions or provide additional context not in the schema. The baseline score of 3 is appropriate since the schema handles most of the parameter documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states the tool's purpose as 'Boost confidence when a memory is successfully used,' which is a specific verb ('boost') applied to a resource ('confidence' of a memory). It clearly distinguishes this from sibling tools like 'adjust_memento_confidence' (which implies broader adjustments) and 'apply_memento_confidence_decay' (which implies reduction), by focusing on reinforcement after successful use.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit guidance on when to use this tool through sections like 'Use for:' and 'Usage patterns:', listing specific scenarios such as 'After successfully applying a solution' and 'When verifying old information is still valid.' It also implies when not to use it (e.g., for general confidence adjustments or decay) by contrasting with sibling tool names, though it does not name alternatives directly.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
contextual_memento_searchA
Search only within the context of a given memento (scoped search).
Two-phase process: (1) Find related memories, (2) Search only within that set. Provides semantic scoping without embeddings.
WHEN TO USE:
Searching within a specific problem context
Finding solutions in related knowledge
Scoped discovery
HOW TO USE:
Specify memory_id (context root)
Provide query (search term)
Optional: max_depth (default: 2)
RETURNS:
Matches found only within related memories
Context information
No leakage outside context
| Name | Required | Description | Default |
|---|---|---|---|
| memory_id | Yes | Memory ID to use as context root (required) | |
| query | Yes | Search query within context (required) | |
| max_depth | No | Maximum relationship traversal depth (default: 2) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes the two-phase process, scoping behavior ('no leakage outside context'), and return format. It doesn't mention rate limits, authentication needs, or error conditions, but provides substantial operational context beyond basic functionality.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (purpose, when to use, how to use, returns), front-loaded with the core functionality. Every sentence earns its place by providing distinct information without redundancy. The formatting enhances readability while maintaining efficiency.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations and no output schema, the description does an excellent job explaining the tool's behavior, usage, and returns. It covers the two-phase process, scoping constraints, and return format. The main gap is lack of explicit error handling or performance characteristics, but overall it's highly complete for a search tool with good parameter documentation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description adds meaningful context by explaining the purpose of each parameter ('context root', 'search query within context', 'relationship traversal depth') and provides default values not in the schema. This adds value beyond what the schema provides, justifying a higher score.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with specific verbs ('search within context', 'find related memories', 'search only within that set') and distinguishes it from siblings by emphasizing semantic scoping without embeddings. It explicitly differentiates from general search tools like 'search_mementos' by focusing on context-bound searches.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description includes explicit 'WHEN TO USE' and 'HOW TO USE' sections that provide clear guidance on when to use this tool ('searching within a specific problem context', 'finding solutions in related knowledge') and how to use it with specific parameters. It implicitly distinguishes from sibling tools by focusing on scoped discovery rather than general searches or relationship searches.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
create_memento_relationshipA
Link two mementos with a typed relationship.
Common types: SOLVES (solution→problem), CAUSES (cause→effect), ADDRESSES (fix→error), REQUIRES (dependent→dependency), RELATED_TO (general)
EXAMPLES:
create_memento_relationship(from_memory_id="sol-1", to_memory_id="prob-1", relationship_type="SOLVES")
create_memento_relationship(from_memory_id="err-1", to_memory_id="fix-1", relationship_type="CAUSES", context="Config error caused timeout")
Optional: strength (0-1), confidence (0-1), context (description)
| Name | Required | Description | Default |
|---|---|---|---|
| from_memory_id | Yes | ID of the source memory | |
| to_memory_id | Yes | ID of the target memory | |
| relationship_type | Yes | Type of relationship to create | |
| strength | No | Strength of the relationship (0.0-1.0) | |
| confidence | No | Confidence in the relationship (0.0-1.0) | |
| context | No | Context or description of the relationship |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It adequately describes the core action (creating typed relationships between mementos) and mentions optional parameters like strength and confidence, but doesn't cover important behavioral aspects such as whether this operation is idempotent, what permissions are required, error conditions, or how conflicts with existing relationships are handled.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is perfectly structured and concise: it starts with the core purpose, provides common relationship types for context, gives clear examples, and lists optional parameters - all in minimal space with zero wasted sentences. Every sentence earns its place by adding practical guidance.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a creation tool with 6 parameters, no annotations, and no output schema, the description is adequate but incomplete. While it covers the core functionality and parameter usage well, it lacks information about what happens after creation (return values, success indicators), error handling, and system constraints. The absence of output schema means the description should ideally mention what to expect upon success.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 100% schema description coverage, the baseline is 3. The description adds significant value by explaining the semantics of relationship_type through examples of common types (SOLVES, CAUSES, etc.) and providing concrete usage examples that clarify parameter ordering and optional parameter usage. This goes well beyond what the schema provides about parameter types and constraints.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with a specific verb ('Link') and resource ('two mementos with a typed relationship'), distinguishing it from siblings like 'search_memento_relationships_by_context' or 'get_related_mementos' which query rather than create relationships. The description explicitly focuses on creation rather than retrieval or modification.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context about when to use this tool by listing common relationship types (e.g., SOLVES, CAUSES) and giving concrete examples, which helps the agent understand appropriate scenarios. However, it doesn't explicitly state when NOT to use it or mention alternatives like 'update_memento' for modifying existing relationships.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
delete_mementoC
Delete a memento and all its relationships
| Name | Required | Description | Default |
|---|---|---|---|
| memory_id | Yes | ID of the memory to delete |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool deletes a memento and its relationships, implying a destructive operation, but lacks details on permissions needed, irreversibility, error handling, or rate limits. This is a significant gap for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that directly states the tool's function without unnecessary words. It's front-loaded with the core action and resource, making it easy to parse quickly.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's destructive nature, no annotations, and no output schema, the description is incomplete. It should cover more behavioral aspects like side effects, confirmation needs, or response format to adequately guide the agent, but it only provides a basic action statement.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, with the 'memory_id' parameter clearly documented. The description doesn't add any extra meaning or context beyond what the schema provides, such as format examples or sourcing tips, so it meets the baseline for high schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('Delete') and resource ('a memento and all its relationships'), making the purpose specific and understandable. However, it doesn't explicitly differentiate from sibling tools like 'update_memento' or 'adjust_memento_confidence', which could also involve memento modifications, so it doesn't reach the highest score.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing the memory_id), exclusions, or compare it to siblings like 'update_memento' for partial changes, leaving the agent to infer usage context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_low_confidence_mementosA
Find memories with low confidence scores.
Use for:
Identifying potentially obsolete knowledge
Periodic cleanup and verification
Quality assurance of the knowledge base
Finding memories that need review
Features:
Filter by confidence threshold (default: < 0.3)
Shows relationships causing low confidence
Includes memory details and last access time
Sorted by confidence (lowest first)
Returns:
List of low confidence relationships with associated memories
Memory details for both ends of each relationship
Confidence scores and last access times
| Name | Required | Description | Default |
|---|---|---|---|
| threshold | No | Confidence threshold (default: 0.3) | |
| limit | No | Maximum number of results (default: 20) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes key behavioral traits: it's a read-only operation (implied by 'Find' and 'Returns'), includes filtering capabilities, shows relationships, provides sorting (lowest confidence first), and returns specific data structures. However, it doesn't mention potential limitations like pagination or performance characteristics.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (purpose, use cases, features, returns) and each sentence adds value. It could be slightly more concise by combining some bullet points, but overall it's efficiently organized with no redundant information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (2 parameters, no output schema, no annotations), the description provides comprehensive context about what the tool does, when to use it, what features it offers, and what it returns. The only minor gap is the lack of explicit output schema documentation, but the 'Returns' section adequately describes the response structure.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema already fully documents both parameters (threshold and limit). The description adds minimal value beyond the schema by mentioning the default threshold (< 0.3) and that results are sorted by confidence, but doesn't provide additional semantic context about parameter interactions or edge cases.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with specific verbs ('Find memories with low confidence scores') and distinguishes it from siblings by focusing on low-confidence filtering rather than general search, creation, or adjustment operations. It explicitly identifies the target resource (memories with low confidence scores).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit usage scenarios in a 'Use for' section with four specific contexts (identifying obsolete knowledge, cleanup, quality assurance, review). It clearly indicates when to use this tool versus alternatives by focusing on low-confidence assessment rather than general retrieval or modification tasks.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_mementoA
Retrieve a specific memento by ID.
Use when you have a memory_id from search results or store_memento. Set include_relationships=true (default) to see connected memories.
EXAMPLE: get_memento(memory_id="abc-123")
| Name | Required | Description | Default |
|---|---|---|---|
| memory_id | Yes | ID of the memory to retrieve | |
| include_relationships | No | Whether to include related memories |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It adds useful context: the default behavior for 'include_relationships' and an example invocation. However, it doesn't cover other behavioral traits like error handling, permissions needed, rate limits, or what the return format looks like (especially since there's no output schema). This leaves gaps for a tool with mutation siblings.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is appropriately sized and front-loaded: the first sentence states the core purpose, followed by usage guidance and an example. Every sentence earns its place with no wasted words, making it efficient and easy to parse.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (retrieval with an optional parameter), no annotations, and no output schema, the description is somewhat complete but has gaps. It covers purpose, usage, and a parameter default, but lacks details on return values, error cases, or how it fits into the broader memory system with siblings like 'get_related_mementos'. This makes it adequate but not fully comprehensive.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema already documents both parameters fully. The description adds minimal value: it mentions the default for 'include_relationships' and provides an example with 'memory_id', but doesn't explain parameter semantics beyond what's in the schema (e.g., format of 'memory_id' or implications of relationships). Baseline 3 is appropriate as the schema does the heavy lifting.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Retrieve a specific memento by ID.' It specifies the verb ('Retrieve') and resource ('memento'), distinguishing it from siblings like 'search_mementos' (searching) or 'delete_memento' (deleting). However, it doesn't explicitly differentiate from 'get_related_mementos' or 'recall_mementos', which might also retrieve memories, so it's not fully sibling-distinctive.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for when to use it: 'Use when you have a memory_id from search results or store_memento.' This gives practical guidance on prerequisites. It doesn't explicitly state when not to use it or name alternatives (e.g., 'get_related_mementos' for relationships without the main memory), so it's not fully comprehensive.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_memento_statisticsC
Get statistics about the memento database
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool retrieves statistics, implying a read-only operation, but doesn't specify if it's safe, requires permissions, has rate limits, or what the output format might be. For a tool with zero annotation coverage, this leaves significant gaps in understanding its behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence ('Get statistics about the memento database') with no wasted words. It's appropriately sized for a simple tool, though it could be more informative without sacrificing brevity. It's front-loaded but lacks depth.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (a statistics tool likely involving aggregated data), no annotations, and no output schema, the description is incomplete. It doesn't explain what statistics are returned, their format, or any behavioral nuances. For a tool with rich potential output and zero structured coverage, this is inadequate.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has 0 parameters, and schema description coverage is 100%, so there's no need for parameter details in the description. The baseline for 0 parameters is 4, as the description doesn't need to compensate for missing schema information. It appropriately avoids discussing non-existent parameters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states the tool's purpose ('Get statistics about the memento database') which is clear but vague. It specifies the verb ('Get') and resource ('memento database') but lacks detail about what kind of statistics or scope. It doesn't differentiate from siblings like 'get_memento' or 'get_recent_memento_activity' beyond the general 'statistics' term.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives. It doesn't mention when to prefer this over other get_* tools (e.g., for aggregated data vs. individual records) or any prerequisites. The description offers only a basic purpose without usage context.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_recent_memento_activityA
Get summary of recent memento activity for session context.
Returns: memory counts by type, recent memories (up to 20), unresolved problems.
EXAMPLES:
get_recent_memento_activity(days=7) - last week's activity
get_recent_memento_activity(days=30, project="/app") - last month for specific project
| Name | Required | Description | Default |
|---|---|---|---|
| days | No | Number of days to look back (default: 7) | |
| project | No | Optional: Filter by project path |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses behavioral traits such as the return content ('memory counts by type, recent memories (up to 20), unresolved problems') and default values (implied in examples). However, it lacks details on permissions, rate limits, or error handling, leaving gaps for a tool with no annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is appropriately sized and front-loaded with the core purpose, followed by return details and examples. Every sentence adds value, but the inclusion of 'EXAMPLES:' as a header slightly disrupts flow. Overall, it's efficient with minimal waste.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations, no output schema, and 2 parameters with full schema coverage, the description is moderately complete. It covers the purpose, return content, and usage examples, but lacks details on output structure, error cases, or integration with sibling tools, making it adequate but with clear gaps for a tool in this context.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, so the baseline is 3. The description adds value by providing examples that clarify usage: 'days=7' for last week and 'days=30, project="/app"' for last month with project filtering. This enhances understanding beyond the schema's technical descriptions, though it doesn't fully explain parameter interactions or constraints.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Get summary of recent memento activity for session context.' It specifies the verb ('Get summary') and resource ('recent memento activity'), though it doesn't explicitly differentiate from sibling tools like 'get_memento_statistics' or 'get_low_confidence_mementos' beyond the 'recent' and 'session context' qualifiers.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage through the phrase 'for session context' and examples showing time ranges and project filtering, but it doesn't explicitly state when to use this tool versus alternatives like 'get_memento_statistics' or 'search_mementos'. The examples provide context but no clear guidance on exclusions or comparisons.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
memento_onboardingA
Get comprehensive onboarding protocol for Memento including tool usage guidance, retrieval flow optimization, and best practices.
MEMENTO ONBOARDING PROTOCOL:
INITIALIZATION: Run memento_onboarding() at session start
RETRIEVAL FLOW:
Fact Check: Use search_mementos(tags=[...]) for simple identity/known facts
Complex Tasks: Use recall_mementos(query="...") for dev/architecture context
Fallback: If search fails, fallback to recall
AUTOMATIC STORAGE: Store via store_memento on git commits, bug fixes, version releases
ON-DEMAND TRIGGERS: Store instantly when user says "memento...", "remember...", etc.
MEMORY SCHEMA: Required tags (project, tech, category). Importance: 0.8+ (critical), 0.5 (standard)
OPTIMIZED RETRIEVAL (Avoid 6+ tool calls):
Target: 1-3 tool calls for simple info
Maximum: 5 tool calls for complex tasks
Follow decision tree: Known tags → search_mementos, Conceptual → recall_mementos
CRITICAL DISTINCTION: Memento vs Session memory
Memento: Long-term, cross-session, global scope
Session Memory: Temporary, project-specific, session-only
USE memento_onboarding(topic="...") for specific guidance:
"protocol": Full onboarding protocol
"retrieval_flow": Optimized retrieval guide
"distinction": Memento vs Session memory
"examples": Practical examples
"best_practices": Usage guidelines
| Name | Required | Description | Default |
|---|---|---|---|
| topic | No | Specific topic for onboarding guidance | onboarding |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses key behavioral traits: it's a read-only guidance tool (implied by 'Get' and protocol explanation), provides structured onboarding steps, includes optimization targets (avoid 6+ tool calls), and outlines usage contexts. However, it doesn't mention potential limitations like response format or error conditions, which could be useful for an agent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is front-loaded with a clear purpose statement, but it's lengthy with detailed sections (MEMENTO ONBOARDING PROTOCOL, OPTIMIZED RETRIEVAL, etc.). While informative, some content (like the retrieval flow details) might be more appropriate for a separate guide rather than the tool description itself, reducing conciseness. However, it's well-structured with bullet points and headings.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (onboarding for a memory system) and lack of annotations or output schema, the description is highly complete. It covers purpose, usage guidelines, behavioral context (retrieval flows, optimization targets), parameter semantics, and distinctions from other tools. This provides the agent with all necessary context to use the tool effectively without needing additional structured data.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage with a clear enum for the 'topic' parameter. The description adds value by explaining the semantics of each enum value (e.g., 'protocol': Full onboarding protocol, 'retrieval_flow': Optimized retrieval guide), which goes beyond the schema's basic enum list. This helps the agent understand what each topic option returns.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states the tool's purpose: 'Get comprehensive onboarding protocol for Memento including tool usage guidance, retrieval flow optimization, and best practices.' This is a specific verb ('Get') + resource ('onboarding protocol') that clearly distinguishes it from sibling tools like search_mementos or recall_mementos, which are for actual retrieval operations rather than guidance.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit guidance on when to use this tool: 'Run memento_onboarding() at session start' and 'USE memento_onboarding(topic="...") for specific guidance' with enumerated topics. It also distinguishes it from alternatives by explaining the retrieval flow for other tools (search_mementos, recall_mementos) and the critical distinction between Memento and Session memory, clarifying this tool's role as onboarding rather than operational.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
recall_mementosA
Primary tool for finding mementos using natural language queries.
Optimized for fuzzy matching - handles plurals, tenses, and case variations automatically.
BEST FOR:
Conceptual queries ("how does X work")
General exploration ("what do we know about authentication")
Fuzzy/approximate matching
USE FOR: Long-term knowledge that survives across sessions. DO NOT USE FOR: Temporary session context or project-specific state.
LESS EFFECTIVE FOR:
Acronyms (DCAD, JWT, API) - use search_mementos with tags instead
Proper nouns (company names, services)
Exact technical terms
EXAMPLES:
recall_mementos(query="timeout fix") - find timeout-related solutions
recall_mementos(query="how does auth work") - conceptual query
recall_mementos(project_path="/app") - memories from specific project
FALLBACK: If recall returns no relevant results, try search_mementos with tags filter.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | Natural language query for what you're looking for | |
| memory_types | No | Optional: Filter by memory types for more precision | |
| project_path | No | Optional: Filter by project path to scope results | |
| limit | No | Maximum number of results per page (default: 20) | |
| offset | No | Number of results to skip for pagination (default: 0) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden and does well by explaining key behavioral traits: it's 'optimized for fuzzy matching' with automatic handling of 'plurals, tenses, and case variations', specifies what types of knowledge it works with ('long-term knowledge that survives across sessions'), and mentions performance characteristics ('less effective for acronyms, proper nouns, exact technical terms'). It doesn't cover rate limits or authentication needs, but provides substantial behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (BEST FOR, USE FOR, etc.) and uses bullet points effectively. While comprehensive, some redundancy exists (e.g., 'Fuzzy/approximate matching' appears in multiple places). Most sentences earn their place by providing distinct guidance, though it could be slightly more concise.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a 5-parameter tool with no annotations and no output schema, the description provides substantial context about when and how to use the tool, behavioral characteristics, and alternatives. It covers the tool's strengths and limitations well. The main gap is lack of information about return format or pagination behavior, but given the comprehensive usage guidance, it's mostly complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema already documents all 5 parameters thoroughly. The description adds minimal parameter-specific information beyond the schema - it mentions the 'query' parameter in examples and implies 'project_path' filtering, but doesn't provide additional semantic context about how parameters affect results. This meets the baseline for high schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose as 'finding mementos using natural language queries' with 'fuzzy matching' capabilities. It distinguishes from sibling tools by specifying this is the 'primary tool' for this function and explicitly mentions 'search_mementos' as an alternative for different use cases, providing clear differentiation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides extensive usage guidance with explicit 'BEST FOR', 'USE FOR', 'DO NOT USE FOR', and 'LESS EFFECTIVE FOR' sections. It names specific alternatives ('search_mementos with tags') for cases where this tool is less effective, and includes a 'FALLBACK' recommendation, offering comprehensive when-to-use and when-not-to-use guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_memento_relationships_by_contextC
Search memento relationships by their structured context fields (scope, conditions, evidence, components)
| Name | Required | Description | Default |
|---|---|---|---|
| scope | No | Filter by scope (partial, full, or conditional implementation) | |
| conditions | No | Filter by conditions (e.g., ['production', 'Redis enabled']). Matches any. | |
| evidence | No | Filter by specific evidence types (e.g., ['integration tests', 'unit tests']). Matches any. | |
| components | No | Filter by components mentioned (e.g., ['auth', 'Redis']). Matches any. | |
| has_evidence | No | Filter by presence/absence of evidence (verified by tests, etc.) | |
| temporal | No | Filter by temporal information (e.g., 'v2.1.0', 'since 2024') | |
| limit | No | Maximum number of results (default: 20) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states what the tool does without behavioral details. It doesn't disclose whether this is a read-only operation, potential side effects, rate limits, authentication needs, or what the output looks like (especially critical since there's no output schema). The description is purely functional without behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that front-loads the core functionality. Every word earns its place by specifying the action, resource, and filtering mechanism without unnecessary elaboration or redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a 7-parameter search tool with no annotations and no output schema, the description is inadequate. It doesn't explain what constitutes a 'memento relationship', how results are returned, pagination behavior, or error conditions. The agent must rely entirely on the input schema for parameter understanding and has no guidance on output format or behavioral characteristics.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description lists the four primary context fields (scope, conditions, evidence, components) but doesn't add meaningful semantics beyond what the 100% schema coverage already provides. The schema descriptions comprehensively explain each parameter's purpose, constraints, and examples. The description merely restates parameter names without additional value.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool searches memento relationships using structured context fields (scope, conditions, evidence, components). It specifies the verb 'search' and resource 'memento relationships' with the filtering mechanism. However, it doesn't explicitly differentiate from sibling tools like 'search_mementos' or 'contextual_memento_search', which appear similar.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives like 'search_mementos' or 'contextual_memento_search'. It lacks context about prerequisites, exclusions, or typical use cases, leaving the agent to infer usage from the tool name and parameters alone.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_mementosA
Advanced search with fine-grained filters for precise retrieval of mementos.
USE THIS TOOL FIRST (not recall) when searching for:
Acronyms: DCAD, JWT, MCR2, API, etc.
Proper nouns: Company names, service names, project names
Known tags: When you know the tag from previous memories
Technical terms: Exact matches needed
PARAMETERS:
tags: Filter by exact tag match (most reliable for acronyms)
memory_types: Filter by type (solution, problem, etc.)
min_importance: Filter by importance threshold
search_tolerance: strict/normal/fuzzy
match_mode: any/all for multiple terms
NOTE: Tags are automatically normalized to lowercase for case-insensitive matching.
EXAMPLES:
search_mementos(tags=["jwt", "auth"]) - find JWT-related memories
search_mementos(tags=["dcad"]) - find DCAD memories by tag
search_mementos(query="timeout", memory_types=["solution"]) - timeout solutions
search_mementos(tags=["redis"], min_importance=0.7) - important Redis memories
For conceptual/natural language queries, use recall_mementos instead.
| Name | Required | Description | Default |
|---|---|---|---|
| query | No | Text to search for in memory content | |
| terms | No | Multiple search terms for complex queries (alternative to query) | |
| match_mode | No | Match mode for terms: 'any' returns results matching ANY term (OR), 'all' requires ALL terms (AND) | |
| tags | No | Filter by tags | |
| memory_types | No | Filter by memory types | |
| relationship_filter | No | Filter results to only include memories with these relationship types | |
| project_path | No | Filter by project path | |
| min_importance | No | Minimum importance score | |
| limit | No | Maximum number of results per page (default: 50) | |
| offset | No | Number of results to skip for pagination (default: 0) | |
| search_tolerance | No | Search tolerance mode: 'strict' for exact matches, 'normal' for stemming (default), 'fuzzy' for typo tolerance |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes key behavioral traits: it's a search/retrieval operation (implied non-destructive), mentions case-insensitive tag normalization, provides search tolerance modes (strict/normal/fuzzy), and includes practical examples. However, it doesn't cover aspects like rate limits, authentication needs, or pagination behavior, leaving some gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured and efficiently uses every sentence. It starts with a clear purpose statement, follows with usage guidelines, details parameters with practical notes, provides concrete examples, and ends with an alternative tool recommendation. No wasted text; each section adds distinct value in a logical flow.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (11 parameters, no output schema, no annotations), the description does a strong job. It covers purpose, usage guidelines, key parameters with semantics, and behavioral notes like case-insensitive matching. However, it lacks details on output format, error handling, or pagination limits, which would be helpful for a search tool with many parameters.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description adds value by explaining parameter usage in context: it lists key parameters (tags, memory_types, min_importance, search_tolerance, match_mode) with practical guidance (e.g., 'tags: Filter by exact tag match (most reliable for acronyms)') and provides examples showing how parameters combine. This enhances understanding beyond the schema's technical definitions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool performs 'Advanced search with fine-grained filters for precise retrieval of mementos,' specifying both the action (search/retrieval) and resource (mementos). It explicitly distinguishes from its sibling 'recall_mementos' by stating 'USE THIS TOOL FIRST (not recall) when searching for:' specific categories like acronyms and proper nouns, making the differentiation unambiguous.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit guidance on when to use this tool versus alternatives. It states 'USE THIS TOOL FIRST (not recall) when searching for:' and lists specific use cases (acronyms, proper nouns, known tags, technical terms), and concludes with 'For conceptual/natural language queries, use recall_mementos instead,' clearly defining the boundary with the sibling tool.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
store_mementoA
Store a new memento with context and metadata.
Required: type, title, content. Optional: id, tags, importance (0-1), context.
USE FOR: Long-term knowledge that should survive across ALL sessions. DO NOT USE FOR: Temporary session state or project-specific context.
LIMITS:
title: max 500 characters
content: max 50KB (50,000 characters)
tags: max 50 tags, 100 chars each
id: if provided, must be unique string identifier
TAGGING BEST PRACTICE:
Always include acronyms AS TAGS (e.g., tags=["jwt", "auth"])
Fuzzy search struggles with acronyms in content
Tags provide exact match fallback for reliable retrieval
Types: solution, problem, error, fix, task, code_pattern, technology, command, file_context, workflow, project, general, conversation
Note: decision is not a standalone type — use type="general" with tags=["decision", "architecture"].
Note: pattern is not a standalone type — use type="code_pattern".
EXAMPLES:
store_memento(type="solution", title="Fixed Redis timeout", content="Increased timeout to 30s...", tags=["redis"], importance=0.8)
store_memento(type="error", title="OAuth2 auth failure", content="Error details...", tags=["auth", "oauth2"], id="custom-error-123")
Returns memory_id. Use create_memento_relationship to link related memories.
| Name | Required | Description | Default |
|---|---|---|---|
| type | Yes | Type of memory to store | |
| id | No | Optional memory ID (if not provided, a UUID will be generated automatically) | |
| title | Yes | Short descriptive title for the memory | |
| content | Yes | Detailed content of the memory | |
| summary | No | Optional brief summary of the memory | |
| tags | No | Tags to categorize the memory | |
| importance | No | Importance score (0.0-1.0) | |
| context | No | Context information for the memory |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden and does an excellent job disclosing behavioral traits. It explains limits (character counts, tag limits), best practices (tagging acronyms), type constraints (what types to avoid), and return behavior ('Returns memory_id'). It doesn't mention authentication, rate limits, or error handling, but covers most operational aspects well for a creation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (Required/Optional, USE FOR/DO NOT USE, LIMITS, TAGGING BEST PRACTICE, Types, Notes, EXAMPLES) and every sentence earns its place. It's appropriately sized for an 8-parameter tool with complex usage considerations. It could be slightly more concise in the type explanations, but overall very efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (8 parameters, no annotations, no output schema), the description provides excellent contextual completeness. It covers purpose, usage guidelines, behavioral constraints, parameter semantics with examples, and references to related tools. The only minor gap is lack of output schema explanation, but 'Returns memory_id' provides the essential information needed for an agent to use the tool effectively.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description adds significant value beyond the schema by: explaining parameter constraints (max lengths, uniqueness requirements), providing tagging best practices with rationale, clarifying type usage with specific examples and restrictions, and giving concrete usage examples. However, it doesn't fully explain the 'context' parameter's structure or purpose.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with specific verb+resource ('Store a new memento with context and metadata'), distinguishes it from siblings by specifying it's for creating new mementos (vs. update_memento, delete_memento, etc.), and explicitly lists required parameters. It goes beyond a tautology by explaining what a 'memento' represents in this context.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit guidance with 'USE FOR: Long-term knowledge that should survive across ALL sessions' and 'DO NOT USE FOR: Temporary session state or project-specific context.' It also references sibling tools ('Use create_memento_relationship to link related memories') and distinguishes when to use specific types vs. alternatives (e.g., 'decision' is not a standalone type).
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
update_mementoC
Update an existing memento
| Name | Required | Description | Default |
|---|---|---|---|
| memory_id | Yes | ID of the memory to update | |
| title | No | ||
| content | No | ||
| summary | No | ||
| tags | No | ||
| importance | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It states this is an update operation, implying mutation, but doesn't describe what happens during updates (e.g., whether fields are replaced or merged, if changes are reversible, permission requirements, or error conditions). This leaves significant gaps for a mutation tool with zero annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that gets straight to the point with zero wasted words. It's appropriately sized for a basic tool description and front-loads the essential information ('Update an existing memento').
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a mutation tool with 6 parameters, 17% schema coverage, no annotations, and no output schema, the description is inadequate. It doesn't explain the update behavior, parameter meanings, return values, or error handling. Given the complexity and lack of structured documentation, the description should provide more context to be complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is only 17% (only 'memory_id' has a description), leaving 5 parameters undocumented in the schema. The description adds no information about parameters beyond what's implied by the tool name, failing to compensate for the low coverage. It doesn't explain what 'title', 'content', 'summary', 'tags', or 'importance' represent or how they affect the update.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('Update') and target resource ('an existing memento'), making the purpose immediately understandable. It distinguishes from siblings like 'create_memento' and 'delete_memento' by specifying it's for existing items, though it doesn't explicitly differentiate from similar update operations like 'adjust_memento_confidence'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing an existing memento ID), exclusions, or comparisons to sibling tools like 'adjust_memento_confidence' or 'boost_memento_confidence' that might also modify mementos. Usage is implied but not explicitly defined.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
17 tool updates
v0.2.35- First observed
adjust_memento_confidence - First observed
apply_memento_confidence_decay - First observed
boost_memento_confidence - First observed
contextual_memento_search - First observed
create_memento_relationship - First observed
delete_memento - First observed
get_low_confidence_mementos - First observed
get_memento - First observed
get_memento_statistics - First observed
get_recent_memento_activity - First observed
get_related_mementos - First observed
memento_onboarding - First observed
recall_mementos - First observed
search_memento_relationships_by_context - First observed
search_mementos - First observed
store_memento - First observed
update_memento
TDQS
Scored across 17 tools
Most tools have distinct purposes, but there is some overlap between recall_mementos and search_mementos, as both are for retrieval with nuanced differences (conceptual vs. precise). Tools like adjust_memento_confidence, boost_memento_confidence, and apply_memento_confidence_decay are clearly differentiated, focusing on manual adjustment, reinforcement, and automated decay respectively, minimizing confusion.
All tool names follow a consistent snake_case pattern with a clear verb_noun structure (e.g., adjust_memento_confidence, create_memento_relationship, get_related_mementos). There are no deviations in naming conventions, making the set predictable and easy to parse.
With 17 tools, the count is slightly high but reasonable for a memory management system covering storage, retrieval, relationships, confidence management, and statistics. It aligns well with the server's purpose, though it might feel a bit heavy compared to simpler domains.
The tool set provides comprehensive coverage for a memory management domain, including CRUD operations (store, get, update, delete), search and recall variants, relationship management, confidence handling, statistics, and onboarding. There are no obvious gaps; it supports full lifecycle management from creation to decay and retrieval.
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