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ContextLayer

by io.github.DotNova
OverviewDiscussionsAdmin

log_activity

Log an activity or event. If no session_id is provided, a session is automatically created or reused for the project. Just pass project_name and content — no need to start a session first.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "event_type": "<event_type>",
      "content": "<content>"
    },
    "name": "log_activity"
  }
}

Input Schema

NameRequiredDescriptionDefault
sourceNoSource of the event (e.g. 'claude-code', 'cursor', 'user')
contentYesFree-form content describing the activity
event_typeYesEvent type: code_change, file_edit, command_run, decision, note, conversation, discovery
project_idNoProject ID (optional if project_name is provided)
session_idNoSession ID (optional — if omitted, a session is auto-created or reused for the project)
project_nameNoProject name (optional, alternative to project_id — used for auto-session)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A3.6/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the burden of disclosing behavior. It does disclose the auto-session behavior, which is useful. However, it omits what happens when neither project_id nor project_name is provided, and the simplification 'just pass project_name and content' neglects the required event_type, which could mislead the agent. There is no contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is short and front-loaded with purpose, but the second sentence is partially inaccurate ('just pass project_name and content' while event_type is required). This reduces the reliability of the conciseness, making it less effective than a fully accurate brief description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers the auto-session use case well but does not explain when to provide an explicit session_id, nor does it mention the required event_type parameter. With no output schema and six parameters, this is a moderate gap. It is sufficient for a simple logging tool but leaves key scenarios unaddressed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so baseline is 3. The description adds value by explaining the relationship between session_id and project_name, emphasizing the auto-session behavior. This goes beyond the individual schema descriptions, clarifying how the parameters interact.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's function ('Log an activity or event') with a specific verb and resource. It implies distinction from sibling tools like log_trace by focusing on activities/events, but does not explicitly name alternatives. This is clear and somewhat differentiates.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides concrete usage guidance: 'If no session_id is provided, a session is automatically created or reused for the project' and 'no need to start a session first.' This tells the agent when it can skip start_session. However, it gives a slightly misleading 'just pass project_name and content' instruction, ignoring the required event_type parameter, and does not mention when to use this tool over log_trace.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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