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Ashby MCP Pack — wraps the Ashby ATS API

Status
Healthy
Last Tested
Transport
Streamable HTTP
URL
Repository
pipeworx-io/mcp-ashby
GitHub Stars
0

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Tool DescriptionsB

Average 3.8/5 across 10 of 10 tools scored. Lowest: 2.9/5.

Server CoherenceC
Disambiguation3/5

The Ashby tools (first 6) are clearly distinct for HR operations, but ask_pipeworx and discover_tools overlap in purpose—both provide tool access via natural language. This creates ambiguity for an agent deciding between them.

Naming Consistency2/5

The Ashby tools use a consistent 'ashby_verb_noun' pattern, but ask_pipeworx, discover_tools, forget, recall, and remember break this pattern entirely. No consistent naming convention across the set.

Tool Count4/5

10 tools is a reasonable count, but the mix of HR tools (6) and general-purpose utility tools (4) feels slightly bloated for a server focused on Ashby. The utility tools could be a separate server.

Completeness2/5

The Ashby domain is incomplete: missing create/update/delete for candidates, jobs, and applications. The utility tools (ask_pipeworx, discover_tools, memory) are unrelated, creating a disjointed surface with significant gaps.

Available Tools

10 tools
ashby_get_candidateBInspect

Get full candidate profile by ID. Returns contact info, resume, interview history, and current application status.

ParametersJSON Schema
NameRequiredDescriptionDefault
_apiKeyYesAshby API key
candidateIdYesAshby candidate ID
Behavior3/5

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

Annotations are empty, so the description must cover behavioral traits. It states the tool is a read operation (get details) and returns a full profile, but lacks specifics like whether it requires authentication beyond the API key, rate limits, or response format.

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

Conciseness4/5

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

The description is concise with two short sentences, front-loading the core purpose. No unnecessary information.

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?

Given the simplicity of the tool (2 params, no output schema), the description is mostly adequate but lacks details on the return value format and any constraints (e.g., candidate ID format).

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

Parameters3/5

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 does not add any additional meaning beyond the schema, but the schema already describes the parameters adequately.

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 retrieves details for a specific candidate by ID, specifying the resource (candidate) and action (get details). However, it does not differentiate from sibling tools like ashby_list_candidates, which lists all candidates.

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

Usage Guidelines2/5

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. For example, it does not mention that this tool retrieves a single candidate, while ashby_list_candidates retrieves multiple candidates.

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

ashby_get_jobAInspect

Get full job posting by ID. Returns description, requirements, hiring stage, and applicant count.

ParametersJSON Schema
NameRequiredDescriptionDefault
jobIdYesAshby job ID
_apiKeyYesAshby API key
Behavior3/5

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 states it returns full job posting information, which is clear, but does not disclose whether the operation is read-only (likely, but not stated), or any other behavioral aspects like rate limits or data freshness.

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

Conciseness5/5

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

The description is two short sentences with no wasted words. The first sentence states the core action, and the second clarifies the output. It is appropriately front-loaded.

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

Completeness4/5

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

Given no output schema, the description states the return value 'full job posting information', which is helpful. The tool is a simple get-by-ID operation with only two parameters, and the description covers the key aspects. Minor gap: does not mention that an error will occur if the ID is invalid.

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

Parameters3/5

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

Schema description coverage is 100% with descriptions for both parameters: 'Ashby job ID' and 'Ashby API key'. The description adds 'by its ID' but adds no new meaning beyond the schema. Baseline 3 is appropriate.

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

Purpose5/5

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

The description uses a specific verb 'Get' and resource 'details for a specific job', clearly distinguishing it from sibling tools like ashby_list_jobs which lists jobs. It also mentions the input parameter 'by its ID' and states the output 'full job posting information'.

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

Usage Guidelines3/5

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

The description implies usage when you need full details for a specific job and have its ID, but it does not explicitly say when not to use it or mention alternatives. The sibling list includes ashby_list_jobs for listing, which provides contrast, but no direct comparison is made.

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

ashby_list_applicationsBInspect

Search job applications across positions. Returns candidate name, applied job, application stage, and submission date.

ParametersJSON Schema
NameRequiredDescriptionDefault
cursorNoPagination cursor from a previous response
_apiKeyYesAshby API key
per_pageNoNumber of applications per page (default 50)
Behavior3/5

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

Annotations are empty, so description carries full burden. It states it returns details, implying a read operation, but doesn't disclose pagination behavior, rate limits, or authentication needs beyond the API key in schema.

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

Conciseness4/5

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

Short and to the point, one sentence. Could be slightly more structured but acceptable.

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

Completeness2/5

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

No output schema, so description should clarify return format. It mentions 'application details including candidate and job info' but lacks specifics. Given sibling tools exist for similar entities, more context on what 'applications' entails would help.

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

Parameters3/5

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

Schema coverage is 100%, so baseline is 3. Description adds no additional meaning beyond the schema; it doesn't explain cursor usage or default per_page value.

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 lists applications and returns details including candidate and job info. It differentiates from siblings like ashby_list_candidates and ashby_list_jobs by focusing on applications, though it could be more explicit about the scope.

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

Usage Guidelines2/5

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

No guidance on when to use this tool vs. alternatives. Sibling tools exist for candidates and jobs, but the description doesn't clarify that this tool is for applications only.

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

ashby_list_candidatesBInspect

Search candidates in your ATS. Returns names, emails, and application metadata. Use ashby_get_candidate with ID for full profile details.

ParametersJSON Schema
NameRequiredDescriptionDefault
cursorNoPagination cursor from a previous response
_apiKeyYesAshby API key
per_pageNoNumber of candidates per page (default 50)
Behavior3/5

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

No annotations are provided, so the description carries full burden. It mentions returned data fields but does not disclose pagination behavior, rate limits, or any side effects. The mention of 'List' implies read-only, but no explicit guarantee.

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

Conciseness4/5

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

The description is very concise: two short sentences. It front-loads the purpose and includes the key outputs. No unnecessary words.

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?

Given the tool's moderate complexity (3 params, no nested objects, no output schema), the description is adequate but lacks details on pagination behavior (cursor usage) and response format. It could be improved with examples or notes on pagination.

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

Parameters3/5

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

Schema description coverage is 100%, so the parameters are well-documented in the schema. The description adds no additional parameter semantics beyond what the schema already provides.

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 it lists candidates and returns specific data (names, emails, metadata). It distinguishes itself from sibling tools like 'ashby_get_candidate' (singular retrieval) and other list operations.

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

Usage Guidelines3/5

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

The description does not specify when to use this tool versus alternatives like ashby_get_candidate or ashby_list_applications. It lacks guidance on when not to use it or any prerequisites.

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

ashby_list_jobsAInspect

Search open positions. Filter by status (open, closed, draft, archived). Returns job title, department, and posting details.

ParametersJSON Schema
NameRequiredDescriptionDefault
statusNoFilter by job status: Open, Closed, Draft, Archived
_apiKeyYesAshby API key
Behavior3/5

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

No annotations exist; description adds basic context (list operation, optional filter) but omits details like pagination, sorting, or API rate limits.

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

Conciseness5/5

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

Single sentence, front-loaded, every word earns its place. No filler.

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?

Adequate for a simple list tool but lacks pagination details and expected response structure. With no output schema, more completeness would be beneficial.

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

Parameters3/5

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

Schema description coverage is 100%, so parameters are already documented. Description adds minor value by restating filter options and confirming optionality.

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

Purpose5/5

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

Clearly states the tool lists jobs from Ashby with optional status filtering, distinguishing it from siblings like ashby_get_job (single job) and ashby_list_candidates (candidates).

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

Usage Guidelines3/5

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

Mentions optional filtering by status but does not discuss when to use this tool versus alternatives such as ashby_get_job for a specific job.

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

ask_pipeworxAInspect

Ask a question in plain English and get an answer from the best available data source. Pipeworx picks the right tool, fills the arguments, and returns the result. No need to browse tools or learn schemas — just describe what you need. Examples: "What is the US trade deficit with China?", "Look up adverse events for ozempic", "Get Apple's latest 10-K filing".

ParametersJSON Schema
NameRequiredDescriptionDefault
questionYesYour question or request in natural language
Behavior4/5

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

With no annotations provided, the description carries the full burden. It transparently explains that Pipeworx 'picks the right tool, fills the arguments, and returns the result,' which reveals internal behavior. It also notes the best available data source is used, adding context. However, it does not disclose any limitations or failure modes.

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

Conciseness5/5

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

The description is three sentences, front-loaded with the core purpose. Every sentence adds value: first states what it does, second explains how, third gives examples. No filler.

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

Completeness5/5

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

Given a simple tool with one parameter, no output schema, and no annotations, the description is complete enough. It explains the input, behavior, and provides examples. The agent can effectively invoke this tool based on the description.

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 beyond the schema by explaining that the 'question' parameter should be in natural language and providing examples. It reinforces the plain English expectation, making the parameter's usage clearer.

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

Purpose5/5

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

The description clearly states the tool's purpose: 'Ask a question in plain English and get an answer from the best available data source.' It uses a specific verb ('ask') and resource ('pipeworx'), and distinguishes itself from sibling tools by noting it picks the right tool and fills arguments, which is unique among the siblings.

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

Usage Guidelines5/5

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

The description explicitly tells when to use this tool: 'just describe what you need' and provides concrete examples. It implies alternatives are not needed because the tool itself handles selection. The lack of sibling differentiation is intentional as this tool serves as a unified interface.

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

discover_toolsAInspect

Search the Pipeworx tool catalog by describing what you need. Returns the most relevant tools with names and descriptions. Call this FIRST when you have 500+ tools available and need to find the right ones for your task.

ParametersJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of tools to return (default 20, max 50)
queryYesNatural language description of what you want to do (e.g., "analyze housing market trends", "look up FDA drug approvals", "find trade data between countries")
Behavior4/5

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 states the tool returns 'the most relevant tools with names and descriptions,' which is clear. However, it does not mention if it has side effects or rate limits. The behavior is well-described for a search tool, so a 4 is justified.

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

Conciseness4/5

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

The description is concise (two sentences) and front-loaded with the primary action. The second sentence provides a clear usage instruction. It is efficient but could be slightly more structured, hence 4.

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

Completeness4/5

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

Given the tool's simplicity (2 parameters, no output schema, no nested objects), the description is largely complete. It explains what the tool does, when to use it, and how to formulate queries. Missing details like return format or potential errors, but for a search tool, this is adequate.

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 the baseline is 3. The description adds value by explaining that the query should be a 'Natural language description' and gives examples ('analyze housing market trends'), and specifies default and max for limit. This goes beyond the schema, earning a 4.

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

Purpose5/5

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

The description explicitly states the tool's purpose: 'Search the Pipeworx tool catalog by describing what you need.' It clearly identifies the verb (search) and resource (tool catalog), and distinguishes itself from sibling tools by positioning as a discovery tool to be called first.

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

Usage Guidelines5/5

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

The description provides explicit guidance: 'Call this FIRST when you have 500+ tools available and need to find the right ones for your task.' This clearly tells when to use it (first step for tool discovery) and implies it's an alternative to manually browsing the catalog.

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

forgetCInspect

Delete a stored memory by key.

ParametersJSON Schema
NameRequiredDescriptionDefault
keyYesMemory key to delete
Behavior2/5

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

No annotations provided, so description must carry full burden. It states deletion but does not disclose side effects (e.g., irreversible, no confirmation, impact on other tools). The simplicity reduces need, but a 2 is warranted given lack of detail.

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

Conciseness4/5

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

Single sentence, direct, no fluff. Could be improved by front-loading the action, but it is efficient for a simple tool.

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?

For a simple deletion tool with one required param, the description is adequate. However, it lacks info on return value (e.g., success/failure indication) and error cases. Completeness is sufficient but not excellent.

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

Parameters3/5

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 does not add meaning beyond schema: it says 'by key' but does not explain format or constraints (e.g., case sensitivity, maximum length). No extra value provided.

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 uses a clear verb 'Delete' and specifies the resource 'stored memory by key'. It distinguishes from sibling tools like 'recall' and 'remember', which imply retrieval, not deletion.

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

Usage Guidelines2/5

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

No guidance on when to use this tool vs alternatives. For example, it does not mention that this is for deleting specific memories by key, nor does it contrast with other memory operations like 'remember' (store) or 'recall' (retrieve).

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

recallAInspect

Retrieve a previously stored memory by key, or list all stored memories (omit key). Use this to retrieve context you saved earlier in the session or in previous sessions.

ParametersJSON Schema
NameRequiredDescriptionDefault
keyNoMemory key to retrieve (omit to list all keys)
Behavior4/5

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

No annotations are provided, so the description carries full burden. It clearly discloses that omitting the key lists all memories, which is a key behavioral trait. It also implies idempotent read behavior (retrieval) without destructive side effects.

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

Conciseness5/5

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

The description is two concise sentences, front-loaded with the core action, and every sentence adds value. No wasted words.

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

Completeness4/5

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

Given the tool's simplicity (one optional parameter, no output schema), the description is complete. It covers retrieval and listing, and hints at cross-session persistence ('earlier in the session or in previous sessions'). It does not specify return format, but that is acceptable without an output schema.

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 coverage is 100% with one parameter described. The description adds value beyond the schema by explaining the effect of omitting the key (list all) and the purpose of the parameter in the context of session memory.

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

Purpose5/5

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

The description uses a specific verb ('Retrieve') and resource ('memory by key'), clearly distinguishing between retrieval of a single memory and listing all memories. It differentiates from siblings like 'remember' (store) and 'forget' (delete).

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 states when to use this tool ('to retrieve context you saved earlier') and implies alternatives by omission (use 'remember' to save, 'forget' to delete). However, it does not explicitly mention when not to use it.

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

rememberAInspect

Store a key-value pair in your session memory. Use this to save intermediate findings, user preferences, or context across tool calls. Authenticated users get persistent memory; anonymous sessions last 24 hours.

ParametersJSON Schema
NameRequiredDescriptionDefault
keyYesMemory key (e.g., "subject_property", "target_ticker", "user_preference")
valueYesValue to store (any text — findings, addresses, preferences, notes)
Behavior4/5

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

With no annotations provided, the description carries full burden and discloses important behavioral traits: persistence differences between authenticated users (persistent) and anonymous sessions (24 hours). This is valuable beyond what annotations would typically provide.

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

Conciseness4/5

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

Three sentences, each adding unique value: purpose, usage guidance, and behavioral detail. Could be slightly tighter, but no waste.

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

Completeness4/5

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

Given the tool is simple with 2 required string parameters, no output schema, and no nested objects, the description is sufficiently complete. It explains what the tool does, when to use it, and behavioral differences between user types.

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

Parameters3/5

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

Schema description coverage is 100% with detailed descriptions for both parameters. The description adds no further parameter meaning beyond the schema, so baseline 3 is appropriate.

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

Purpose5/5

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

Description uses specific verb 'store' and resource 'key-value pair in session memory', clearly distinguishing it from sibling tools like 'forget' and 'recall'. It explicitly states the purpose of saving intermediate findings, preferences, or context across calls.

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?

Description implicitly advises when to use: to save intermediate findings, user preferences, or context across tool calls. It does not explicitly contrast with alternatives like 'forget' or 'recall', but the sibling names make the distinction clear.

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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