{
  "openapi": "3.1.0",
  "info": {
    "title": "FableGuide — Agents First read API",
    "version": "1.0.0",
    "description": "Read-only structured resources about Claude Fable 5 at fableguide.com. Built Agents First (agentsfirst.dev). No auth; no writes. Facts sourced from Anthropic's 2026-06-09 announcement and the Claude API reference; independent site, not affiliated with Anthropic.",
    "contact": {"name": "WholeTech", "url": "https://wholetech.com"}
  },
  "servers": [{"url": "https://fableguide.com"}],
  "paths": {
    "/api/model.json": {"get": {"operationId": "getModel", "summary": "Claude Fable 5 specs: model ID, context, output, pricing, thinking rules, effort levels, availability dates, Mythos 5 access.", "responses": {"200": {"description": "Model facts", "content": {"application/json": {"schema": {"type": "object"}}}}}}},
    "/api/quickstart.json": {"get": {"operationId": "getQuickstart", "summary": "Minimal working API calls to claude-fable-5 (curl, Python, TypeScript) with recommended defaults.", "responses": {"200": {"description": "Quickstart", "content": {"application/json": {"schema": {"type": "object"}}}}}}},
    "/api/gotchas.json": {"get": {"operationId": "getGotchas", "summary": "Request shapes that fail on claude-fable-5 (sampling params, budget_tokens, disabled thinking, prefills), each with the fix.", "responses": {"200": {"description": "Gotchas", "content": {"application/json": {"schema": {"type": "object"}}}}}}},
    "/api/benchmarks.json": {"get": {"operationId": "getBenchmarks", "summary": "Benchmark and capability claims for Fable 5 / Mythos 5 with Anthropic chart URLs.", "responses": {"200": {"description": "Benchmarks", "content": {"application/json": {"schema": {"type": "object"}}}}}}}
  }
}