PCH MCP Server
OfficialClick on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@PCH MCP Servercheck my USDC balance and tier"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
PCH MCP Server
Drop-in MCP server for PathCourse Health (PCH) — cheaper LLM inference, USDC-based agent payments, and agent identity / reputation lookup. Works in Claude Desktop, Cursor, Cline, Continue.dev, and Zed.
14 tools. 7 free (no API key needed) and 7 authenticated. Includes a unique flow that lets you buy a PCH API key from inside Claude Desktop using USDC — no signup form, no email verification.
Install
Claude Desktop, Cursor, Cline, Continue.dev, Zed (npm)
Add to your client's MCP config:
{
"mcpServers": {
"pch": {
"command": "npx",
"args": ["-y", "@pathcourse/mcp-server"],
"env": {
"PCH_API_KEY": "pch_prod_b_..."
}
}
}
}If you don't have a PCH API key yet, omit the env block. Many tools work without authentication; you can obtain a key via the pch_provision tool.
Per-client install instructions:
Python clients (PyPI)
uvx pch-mcp-server
# or
pip install pch-mcp-serverRelated MCP server: Agent Identity MCP Server
Tools
Free (no API key)
Tool | What it does |
| List all PCH models with rates and tier requirements |
| Estimate cost of an inference request before running it |
| Gateway health and service status |
| Get USDC payment instructions to obtain an API key |
| Submit USDC payment proof; returns API key + first inference |
| Lookup an agent's ERC-8004 identity record |
| Look up an agent's Path Score (0-1000) |
| 12-month trend of an agent's score components |
| Verify a PCH-issued certification |
| Compare PCH model cost vs GPT-4o, Claude Sonnet, Claude Haiku |
Authenticated (PCH_API_KEY required)
Tool | What it does |
| Run LLM inference on a PCH model |
| Check remaining USDC balance and current tier |
| Deeper reputation lookup ($0.001 USDC per query) |
| Self-service balance + identity + recent activity |
Configuration
Env var | Default | Notes |
| (none) | Required for authenticated tools. Format: |
|
| Override for staging or local dev |
Security
Never commit PCH_API_KEY to a public repo. The wrapper logs a warning at startup if it detects a key that looks like a real production key being passed through env. If you accidentally exposed your key, rotate it via PCH support.
License
MIT
Source
This wrapper is open source: pathcourse-health/pch-mcp-server
The upstream PCH MCP server lives in the (private) pch-platform-gateway repo.
This server cannot be deployed
Maintenance
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