Wicked Sanity

A human read this entry. That is the one thing true of everything on the list. Beyond that: the endpoint answered an x402 request when we knocked it, on the date shown. That date is the claim — not a word, a date. None of it is a delivery test. We have not paid for this and graded what came back, so read it as "we checked what is stated above," never as "this is worth the money."

How we check →

Hallucination / claim-check API for agents mid-loop. POST a claim plus context (grounded mode, real HHEM-2.1-Open entailment inference) or let it check live web evidence (open mode, Tavily retrieval scored by the same model) and get `supported` / `unsupported` / `contradicted` / `insufficient_evidence` with a consistency score and the evidence used, never a guessed verdict. Open mode checks consistency with the web, not objective truth. x402 pay-per-call on Base mainnet via the Coinbase CDP facilitator: $0.003 per request plus $0.001 per grounded claim ($0.015 per open-mode claim), or free with an API key. ([llms.txt](https://sanity.wickedapi.com/llms.txt) | [OpenAPI](https://sanity.wickedapi.com/openapi.json) | [Discovery](https://sanity.wickedapi.com/.well-known/x402) | [MCP](https://mcp.wickedapi.com/mcp))