{"id":"frankfurter","name":"Frankfurter","url":"https://frankfurter.dev","category":["finance","market-data"],"one_liner":"Keyless public REST API for current and historical foreign-exchange reference rates, with a published OpenAPI 3.1 document and an official hosted MCP server.","a_score":100,"band":"native","dimensions":{"access":25,"payment":25,"interface":20,"completion":20,"docs":7},"permission":{"status":"unstated","source":"https://frankfurter.dev/"},"blocker":{"kind":"none"},"how_to_use":{"interface":"mcp","mcp":"https://mcp.frankfurter.dev/","openapi":"https://api.frankfurter.dev/v2/openapi.json","base_url":"https://api.frankfurter.dev/v2","payment":{"model":"free","currencies":[],"reference_task_cost_usd":0}},"verified":{"verdict":"completed","at":"2026-08-16","human_interventions":0,"transcript_sha":"sha256:2f9d288fd10620d3ede170b9398d4f4d951d3a500c7695dc50227b084857443e"},"rubric":"sha256:cd605a44799f49951bf078fda63c5b21ad3c07db494f41d38ad19ce729c5551a","last_verified_at":"2026-08-16","audit_url":"/entry/frankfurter/audit.json","compact_note":"Public machine card is compacted for FANA scanner compatibility and deployment size. Full source entry and signed audit event body remain in the ag3ntsearch git tree; audit_url publishes hash-chain provenance."}