Agent Evidence API MCP Server

About Agent Evidence API

Evidence infrastructure for agents. research_evidence fetches the public URLs you name, extracts the passages that bear on your question, and returns each with its source URL, retrieval timestamp, short excerpt and content hash, plus an explicit supported / contradicted / mixed / inconclusive assessment. Also exposes a free sample call and a free health tool. No API key and no account: discovery is free, a paid call is $0.01 in USDC on Base over x402, and nothing is charged when nothing is retrieved.

Agent Evidence API tools (4)

Read from the live server on Oct 26, 2026. These are the tools your AI assistant can call once connected.

research_evidence

Fetch public web sources and return structured, cited web evidence for a question or claim. Use this for source verification, claim verification, evidence extraction, and source-grounded research, or to compare sources. Returns source URLs,

preview_evidence

Free preview of the paid tool: give one question and one public URL and get back up to three cited excerpts with the source URL, retrieval time and content hash. No assessment and no verdict - that is what research_evidence adds, over up to

sample

Return one real, previously produced evidence package, free, so you can see exactly what a paid call returns before spending anything: a verdict, and for every source the URL, retrieval time, content hash and the cited excerpts. Takes no ar

health

Check that the Agent Evidence API MCP server is reachable and report which service version is running. Free to call, takes no arguments or payment. Returns only {status, service, version} and exposes no secrets or infrastructure detail.

How to connect Agent Evidence API to Claude, Cursor or VS Code

Agent Evidence API runs as a hosted remote MCP server at https://agent-evidence.thx93.dev/mcp. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.

{
  "mcpServers": {
    "agent-evidence-api": {
      "url": "https://agent-evidence.thx93.dev/mcp"
    }
  }
}

Claude Code: claude mcp add --transport http agent-evidence-api https://agent-evidence.thx93.dev/mcp. Servers that require OAuth or an API key will prompt on first use.