MCP MeasureMCP Measure

index observed

POSTFACT — Resolve Ambiguous Side Effects Before Retry

Resolve whether an uncertain side-effecting action completed before software retries it.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
70%
Naming quality
80%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~212Tokens (tool definitions)
~1.7 KBTypical response size
Minimal attention impact (0.17% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "postfact": {
      "url": "https://postfact-api-production.up.railway.app/mcp"
    }
  }
}

Remote endpoints

https://postfact-api-production.up.railway.app/mcpstreamable-http

What it can do

Tool inventory

Tools (1)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢resolve_outcome(method, status, failure, sideEffect, idempotencyKey, ...)

Call after a side-effecting API/tool action fails ambiguously and before retrying. POSTFACT returns DONE only with affirmative completion evidence, NOT_DONE only with affirmative non-execution evidence, otherwise UNKNOWN. UNKNOWN is the safe default.

Input Schema

{
  "type": "object",
  "properties": {
    "method": {
      "type": "string"
    },
    "status": {
      "type": "integer"
    },
    "failure": {
      "type": "string"
    },
    "sideEffect": {
      "type": "boolean"
    },
    "idempotencyKey": {
      "type": "string"
    },
    "requestId": {
      "type": "string"
    },
    "resourceRef": {
      "type": "string"
    },
    "transactionRef": {
      "type": "string"
    },
    "evidence": {
      "type": "object",
      "properties": {
        "providerStatus": {
          "type": "string"
        },
        "resourceExists": {
          "type": "boolean"
        },
        "receiptVerified": {
          "type": "boolean"
        },
        "transactionStatus": {
          "type": "string"
        },
        "preExecutionRejection": {
          "type": "boolean"
        }
      },
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}

Community

Rate this Server

Evidence

Recent observations

verifiedversion not recorded1 tools
verifiedversion not recorded1 tools
verifiedversion not recorded1 tools
verifiedversion not recorded1 tools
verifiedversion not recorded1 tools
verifiedversion not recorded1 tools
verifiedversion not recorded1 tools