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scratch-unified-mcp

scratch-unified-mcp

by blessed0x
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

Social Verify Session

social_verify_session

Check if a stored Scratch session ID is still valid by making a live request. Refreshes account details on success, preventing use of expired or revoked logins.

Instructions

Check with Scratch whether a stored session id is still valid.

Restored sessions are rebuilt offline from the session id, so an expired or revoked login looks fine until it is used. This performs a real request to confirm, and refreshes the account details on success.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "social_verify_session"
  }
}

Input Schema

NameRequiredDescriptionDefault
usernameNoSession to check. Defaults to the active session.

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A4.3/5.0
Behavior4/5

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

With no annotations, the description carries the full burden. It discloses that the tool performs a real network request and refreshes account details on success, which is behavior an agent could not infer from the schema alone. It does not describe failure behavior in detail, but the output schema likely covers that.

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 purpose is front-loaded in the first sentence, followed by two concise sentences explaining the trap and the real-request behavior. Every sentence earns its place with no redundancy.

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?

For a simple, optional-parameter verification tool with an output schema, the description covers purpose, trigger scenario, network behavior, and side effect on success. Nothing essential is missing for correct invocation.

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% for the single optional username parameter, so the description does not need to add much parameter-level detail. It aligns the session-id concept with the tool's purpose but adds no new syntax or format guidance beyond the schema.

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 states a specific verb and resource: 'Check with Scratch whether a stored session id is still valid.' This clearly distinguishes verification from sibling tools like social_connect_session or social_list_sessions.

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?

It explains the important context: restored sessions are rebuilt offline and can look valid even when expired or revoked, so a real request is needed to confirm. This gives clear guidance on when to use the tool, though it does not explicitly name alternative tools or exclusions.

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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