# Course Drift Oracle

> MCP server selling signed drift reports, model deprecation facts, and
> twelve-check site legibility audits. Free tiers on every product; paid
> detail settles via MPP or x402/USDC (testnet).

## Free surfaces

- [heartbeat](/heartbeat): shields.io badge JSON, days since the last
  real settlement on this worker.
- [pot](/pot): lifetime settlement tally, one coin per cleared payment.
- [badge](/badge?models=gpt-4o): model deprecation status as a badge.
- [uptime](/uptime): recent readings from the hourly uptime probe,
  counts only, measurements rather than promises.
- [audit](/audit?url=https://example.com): paste a site URL, get how many
  of the 12 agent-legibility checks it passes. Rate limited per target;
  per-check detail and the signed receipt are the paid site_audit tool.
- [mcp advertisement](/.well-known/mcp.json): where the MCP endpoint
  lives and how to speak to it.

## Endpoint

MCP over streamable HTTP at /mcp. The storefront with the full catalog
lives at https://710git.github.io/course-drift-oracle/.