Postcept MCP

An MCP server that allows AI agents to verify high-risk actions like refunds, cancellations, or ticket resolutions against the system of record. It provides tools to confirm completion and obtain signed receipts, ensuring that 'done' becomes proof rather than a claim. The server acts as a thin wrapper over the Postcept HTTP API, holding no credentials beyond the user's API key.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Postcept

You need:A Postcept API key ( pcpt_sk_... ) with verifications:write

Vendor documentation

What you can do with it

Verify a claimed refund exists and matches amount/currency
Verify a subscription was actually cancelled
Verify a support ticket is in the expected state
Fetch a past verification and its signed receipt by id

Source and maintenance

Community listingRegistry 0.3.3

mcp-registry: io.github.Postcept/mcp@0.3.3 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@postcept/mcp 0.3.3

npm

@postcept/mcp package definition

{
  "version": "0.3.3",
  "transport": "stdio",
  "identifier": "@postcept/mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "POSTCEPT_API_KEY",
      "isRequired": true,
      "description": "Postcept API key"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "postcept-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@postcept/mcp@0.3.3"
      ],
      "env": {
        "POSTCEPT_API_KEY": "<YOUR_POSTCEPT_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "postcept-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@postcept/mcp@0.3.3"
      ],
      "env": {
        "POSTCEPT_API_KEY": "<YOUR_POSTCEPT_API_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "postcept-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@postcept/mcp@0.3.3"
      ],
      "env": {
        "POSTCEPT_API_KEY": "<YOUR_POSTCEPT_API_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "postcept-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@postcept/mcp@0.3.3"
      ],
      "env": {
        "POSTCEPT_API_KEY": "<YOUR_POSTCEPT_API_KEY>"
      }
    }
  }
}

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