{"uid":"cap_0f4EX_LkgWHxD0RHptJBG","slug":"milliapi-llms-txt-checker-9fb6a253","name":"MilliAPI llms.txt Checker","description":"Tiny machine-readable APIs that AI agents can discover, pay for with x402 USDC on Base, and use instantly. Services start at $0.001 per call.","url":"https://milliapi.com/api/llms-txt-check","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"origin":"https://example.com","llmsTxt":{"bytes":0,"status":404,"present":false,"preview":null}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_f5vx_owx4Ttap3K5sOspD","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given website publishes an llms.txt file and returns its HTTP status, byte size, and a preview snippet for agent discovery workflows.","exampleAgentPrompt":"Can you check whether stripe.com has an llms.txt file — I want to know if it's present, how big it is, and see a preview of the content?","exampleUseCases":[{"title":"Vetting AI-ready vendors before integration","prompt":"Before I integrate with this new API provider, can you check if api.openai.com publishes an llms.txt file and show me a preview so I know they support AI agent discovery?"},{"title":"Auditing competitor AI discoverability","prompt":"I want to know if my competitor shopify.com has an llms.txt file — check if it's there, what the HTTP status is, and how large it is."},{"title":"Monitoring partner site llms.txt availability","prompt":"Can you verify whether docs.anthropic.com currently has an llms.txt file and tell me its size and a snippet of what it says?"}],"resultDescription":"Returns a JSON object containing the origin URL checked, and an llmsTxt object with: a boolean indicating presence, the HTTP status code (e.g. 200 or 404), the byte size of the file, and a bounded preview string (or null if absent).","failureModes":["URL is not publicly accessible — returns an error or unreachable status","Site returns a non-standard redirect that obscures llms.txt location","llms.txt exists but is too large for preview — preview may be truncated","Invalid or malformed URL input — request rejected with validation error","Site blocks automated HTTP requests — may return 403 or timeout"],"whenToPreferThis":"Use this endpoint when an agent needs to quickly determine whether a specific website participates in the llms.txt standard for AI discoverability, especially in agent orchestration pipelines that need to gate behavior based on a site's AI-readiness. Prefer this over scraping the full site or manually fetching robots.txt when the specific question is llms.txt presence and content.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:39:56.994Z","isFirstParty":false}