{"slug":"yahoo-finance","name":"Yahoo Finance","domain":"finance.yahoo.com","category":{"slug":"dev-api","name":"Developer / Data APIs"},"usageMode":"integrated","score":76,"scoreLow":45,"scoreHigh":95,"unassessed":["email_otp","sms_otp","phone_verification_call","mailed_physical_code","contact_sales_wall","manual_approval_queue","rate_limit_manual_review","account_payment_provisioning","kyc_identity_verification","crypto_wallet_custody_setup"],"propertyStates":{"sms_otp":"unassessed","email_otp":"unassessed","tos_bot_ban":"success","captcha_challenge":"success","contact_sales_wall":"unassessed","sso_only_no_api_key":"failed","mailed_physical_code":"unassessed","no_machine_interface":"success","manual_approval_queue":"unassessed","phone_verification_call":"unassessed","redirect_to_vendor_site":"success","rate_limit_manual_review":"unassessed","kyc_identity_verification":"unassessed","crypto_wallet_custody_setup":"unassessed","account_payment_provisioning":"unassessed"},"badge":"MODERATE_INTERRUPT","machineReadabilityScore":22.92,"compositeScore":49,"custodyRiskFlag":"unknown","confidenceLabel":"PROVISIONAL","lastProbedAt":"2026-09-07T17:00:00.604Z","status":"active","homepageUrl":"https://finance.yahoo.com","description":"Market data and news; unofficial API and the most-installed finance MCP server","machineReadabilityBreakdown":[{"id":"llms_txt","label":"llms.txt","status":"fail"},{"id":"llms_full_txt","label":"llms-full.txt","status":"fail"},{"id":"agents_md","label":"AGENTS.md","status":"fail"},{"id":"agent_card","label":"A2A agent card","status":"fail"},{"id":"mcp_server","label":"MCP server (well-known or official registry)","status":"fail","evidence":"no /.well-known/mcp.json and no match in the official MCP registry"},{"id":"openapi_spec","label":"OpenAPI/Swagger spec","status":"fail"},{"id":"rate_limit_headers","label":"Rate-limit headers","status":"fail"},{"id":"structured_errors","label":"Structured JSON error responses","status":"fail","evidence":"sampled 7 error response(s); none returned structured JSON"},{"id":"oauth_metadata","label":"OAuth authorization-server metadata (RFC 8414)","status":"fail"},{"id":"api_catalog","label":"API catalog (RFC 9727) (emerging)","status":"fail"},{"id":"payment_protocol","label":"Agent-payment discovery (x402 / UCP) (emerging)","status":"fail"},{"id":"page_byte_weight","label":"Lean HTML transfer size","status":"fail","evidence":"1024 KB raw HTML (threshold 488 KB)"},{"id":"dom_node_count","label":"Manageable DOM size","status":"fail","evidence":"4487 DOM nodes (threshold 1500)"},{"id":"content_density","label":"High content-to-markup density","status":"fail","evidence":"1.5% text/HTML (15633 chars in 1024 KB, threshold 2%)"},{"id":"js_dependence","label":"Content readable without JS execution","status":"pass","evidence":"raw HTML holds 128% of rendered text (15633 vs 12197 chars; threshold 40%)"},{"id":"clean_content_path","label":"Clean-content alternate (RSS/Atom/feed/markdown)","status":"fail","evidence":"no <link rel=alternate> feed/markdown variant"},{"id":"markdown_content","label":"Serves markdown on Accept: text/markdown","status":"fail","evidence":"returned text/html; charset=utf-8 (not markdown)"},{"id":"semantic_interactive","label":"Interactive elements are semantic","status":"fail","evidence":"604/605 semantic (100%); 1 div/span click targets"},{"id":"form_field_names","label":"Form fields have accessible names","status":"pass","evidence":"4/4 named (100%)"},{"id":"input_autocomplete","label":"Inputs carry autocomplete hints","status":"fail","evidence":"0/2 with autocomplete (0%)"},{"id":"webmcp","label":"WebMCP tools (modelContext API)","status":"fail","evidence":"no document/navigator.modelContext tool registration observed"},{"id":"retrieval_bot_access","label":"AI retrieval/search fetchers allowed (robots.txt)","status":"fail","evidence":"blocked: ChatGPT-User, PerplexityBot"},{"id":"sitemap_xml","label":"Sitemap (indexability)","status":"pass","evidence":"https://finance.yahoo.com/sitemap_en-us_quotes_index.xml"},{"id":"schema_org_jsonld","label":"schema.org JSON-LD in raw HTML","status":"pass","evidence":"1 valid JSON-LD block(s) in raw (pre-JS) HTML"},{"id":"content_signals","label":"Content-Signal directives (robots.txt)","status":"fail","evidence":"no Content-Signal lines in robots.txt"},{"id":"web_bot_auth","label":"Web Bot Auth key directory (emerging)","status":"fail"},{"id":"link_header_discovery","label":"Discovery Link headers on homepage (emerging)","status":"fail","evidence":"no Link header on the homepage response"},{"id":"pricing_public","label":"Pricing visible without login","status":"pass","evidence":"https://finance.yahoo.com/personal-finance/banking/article/best-cd-rates-201308688.html"},{"id":"robots_ai_crawlers","label":"robots.txt AI-crawler access","status":"fail","evidence":"blocked: GPTBot, ChatGPT-User, CCBot, anthropic-ai, ClaudeBot, Claude-Web, Google-Extended, PerplexityBot, Bytespider, Amazonbot"},{"id":"unauthed_api_error_shape","label":"Unauthenticated API error is structured JSON","status":"fail","evidence":"https://finance.yahoo.com/api (HTTP 404)"},{"id":"unauthed_api_auth_guidance","label":"Unauthenticated API returns auth guidance (401/403 or documented)","status":"fail","evidence":"https://finance.yahoo.com/api (HTTP 404)"},{"id":"unauthed_api_rate_limit","label":"API exposes rate-limit headers","status":"fail","evidence":"no RateLimit-* / X-RateLimit-* headers on the sampled response"},{"id":"api_key_self_serve","label":"API key obtainable without human interaction","status":"fail","evidence":"signup is SSO-only — no self-serve programmatic credential path"}],"confidence":0.55,"rubricVersion":"rubric@2026.4","tiersTested":{"tier0":true,"tier1":true,"tier2":false,"tier2Complete":false},"flags":{"tosBan":false,"hardBlocker":true,"contactSalesOnly":false,"perTxnHardBlocker":false},"scoreHistory":[{"score":76,"badge":"MODERATE_INTERRUPT","confidenceLabel":"PROVISIONAL","rubricVersion":"rubric@2026.4","isCurrent":true,"createdAt":"2026-09-07T17:00:00.616Z"},{"score":85,"badge":"LOW_INTERRUPT","confidenceLabel":"PROVISIONAL","rubricVersion":"rubric@2026.4","isCurrent":false,"createdAt":"2026-09-07T16:59:56.307Z"}],"findings":[{"interruptType":"sso_only_no_api_key","tier":1,"timing":"setup","hardness":"hard","flowLocation":"signup","description":"Signup offers only OAuth/SSO buttons (Sign in with Google) — no email/password or API-key path.","provenance":"inferred","rawSignal":{"detail":{"hasCodeField":false,"hasEmailField":false,"hasPhoneField":false,"hasOAuthButton":true,"hasPasswordField":false,"oauthButtonLabels":["Sign in with Google"]},"signupUrl":"https://login.yahoo.com/config/login?done=https%3A%2F%2Ffinance.yahoo.com%2F&intl=us&lang=en-US&activity=dock-portfolio&pspid=1183300002&src=finance"},"detectedAt":"2026-09-07T17:00:00.601Z"}]}