{"id":"4093c290-a586-4634-bae1-8176d1a0f4ef","shortId":"4BCQhg","kind":"x402","title":"Retrieve a specific documentation page by ID from 10 pre-indexed platforms via x402 micropayment.","tagline":"Retrieve a specific documentation page by ID from 10 pre-indexed platforms via x402 micropayment.","description":"AgentUtil Docs `/lookup` is a POST endpoint that retrieves the full chunked content of a specific documentation page by its identifier and platform. It is designed as a follow-up to the `/query` semantic search endpoint: once an agent identifies a relevant page via search, `/lookup` returns all chunks for that page with source URLs and section labels. The service covers approximately 38,000 chunks across 10 pre-indexed platforms including Shopify, Stripe, Cloudflare Workers, Next.js, Anthropic API, OpenAI API, Tailwind CSS, htmx, x402, and Jesse.\n\nThe endpoint accepts a JSON body with required `platform` and `page` fields, plus an optional `type` filter (e.g. mutation, query, function). It returns an array of chunk objects each containing content text, source URL, and section name, along with a count of chunks returned. Pricing is $0.002 per request paid via the x402 protocol using USDC on Base. A free tier of 10 requests per day per IP is available with no signup required.\n\nThe probe returned HTTP 400 (not 402) on POST, which suggests the endpoint expects a valid JSON body to trigger the x402 payment challenge rather than responding with 402 on an empty request. The OpenAPI spec and landing page are well-structured, and the service exposes standard agent discovery files (agent-service.json, agent.json, openapi.json). Query latency is advertised as under 100ms.","tags":[],"capabilities":["documentation-lookup","page-retrieval-by-id","chunked-content","multi-platform-docs","x402-micropayment","usdc-on-base","semantic-doc-search-companion","agent-discovery"],"categories":["search","knowledge","developer-tools"],"synonyms":["documentation retrieval","docs page lookup","API reference search","developer docs fetch","page content retrieval","doc chunk lookup","AgentUtil","pre-indexed docs"],"warnings":["Probe did not capture a 402 x402 challenge — endpoint returned 400 on POST, possibly requiring a valid JSON body to trigger payment flow","No dedicated documentation pages found (/docs, /api, /pricing all return 404)","Response example is inferred from OpenAPI schema, not from an actual observed response"],"endpointUrl":"https://docs.agentutil.net/v1/lookup","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","openapi":"https://docs.agentutil.net/openapi.json","version":"2","docs_url":"https://docs.agentutil.net/.well-known/agent-service.json","free_tier":"10 queries/day without payment","description":"Retrieve a specific documentation page by ID. Returns the full chunked content — use after /query to get complete context for a relevant result."},"payTo":"0x1357bef96ec515d250137d7eb712f0395eb5142d","amount":"2000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.650","qualityRationale":"Full OpenAPI schema with request/response definitions and clear pricing from the landing page. However, the x402 challenge was not directly captured (endpoint returned 400 instead of 402), so liveness via the x402 protocol is not confirmed. No standalone docs pages exist beyond the landing page. Response example is inferred from the schema, not 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'/query':66 '0.002':167 '000':97 '10':9,25,100,183 '100ms':255 '38':96 '400':199 '402':201,223 'API reference search' 'AgentUtil' 'accept':123 'across':99 'advertis':252 'agent':72,243 'agent-discovery' 'agent-service.json':246 'agent.json':247 'agentutil':33 'along':158 'anthrop':111 'api':112,114 'approxim':95 'array':145 'avail':190 'base':178 'bodi':126,212 'challeng':218 'chunk':44,82,98,147,163 'chunked-content' 'cloudflar':108 'contain':150 'content':45,151 'count':161 'cover':94 'css':116 'day':186 'design':58 'developer docs fetch' 'discoveri':244 'doc':34 'doc chunk lookup' 'docs page lookup' 'document':4,20,49 'documentation retrieval' 'documentation-lookup' 'e.g':138 'empti':226 'endpoint':39,69,122,207 'expect':208 'expos':241 'field':132 'file':245 'filter':137 'follow':62 'follow-up':61 'free':180 'full':43 'function':141 'htmx':117 'http':198 'id':7,23 'identifi':53,73 'includ':105 'index':12,28,103 'ip':188 'jess':120 'json':125,211 'label':91 'land':232 'latenc':250 'micropay':16,32 'multi-platform-docs' 'mutat':139 'name':157 'next.js':110 'object':148 'openai':113 'openapi':229 'openapi.json':248 'option':135 'page':5,21,50,76,85,131,233 'page content retrieval' 'page-retrieval-by-id' 'paid':170 'payment':217 'per':168,185,187 'platform':13,29,55,104,129 'plus':133 'post':38,203 'pre':11,27,102 'pre-index':10,26,101 'pre-indexed docs' 'price':165 'probe':196 'protocol':174 'queri':140,249 'rather':219 'relev':75 'request':169,184,227 'requir':128,194 'respond':221 'retriev':1,17,41 'return':80,143,164,197 'search':68,78 'section':90,156 'semant':67 'semantic-doc-search-companion' 'servic':93,240 'shopifi':106 'signup':193 'sourc':87,153 'spec':230 'specif':3,19,48 'standard':242 'stripe':107 'structur':237 'suggest':205 'tailwind':115 'text':152 'tier':181 'trigger':214 'type':136 'url':88,154 'usdc':176 'usdc-on-base' 'use':175 'valid':210 'via':14,30,77,171 'well':236 'well-structur':235 'worker':109 'x402':15,31,118,173,216 'x402-micropayment'","prices":[{"id":"9e410056-645b-464e-a7ba-01bfd6f68ed5","listingId":"4093c290-a586-4634-bae1-8176d1a0f4ef","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x1357bef96ec515d250137d7eb712f0395eb5142d","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","openapi":"https://docs.agentutil.net/openapi.json","version":"2","docs_url":"https://docs.agentutil.net/.well-known/agent-service.json","free_tier":"10 queries/day without payment","description":"Retrieve a specific documentation page by ID. Returns the full chunked content — use after /query to get complete context for a relevant result."},"payTo":"0x1357bef96ec515d250137d7eb712f0395eb5142d","amount":"2000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:34.973Z"}],"sources":[{"listingId":"4093c290-a586-4634-bae1-8176d1a0f4ef","source":"x402_bazaar","sourceId":"https://docs.agentutil.net/v1/lookup","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:34.973Z","lastSeenAt":"2026-04-22T04:02:50.464Z"}],"details":{"listingId":"4093c290-a586-4634-bae1-8176d1a0f4ef","quickStartSnippet":"curl -X POST https://docs.agentutil.net/lookup \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\n    \"platform\": \"shopify\",\n    \"page\": \"productVariantCreate\"\n  }'","exampleRequest":{"page":"productVariantCreate","type":"mutation","platform":"shopify"},"exampleResponse":{"page":"productVariantCreate","chunks":[{"content":"The productVariantCreate mutation creates a new product variant...","section":"Overview","source_url":"https://shopify.dev/docs/api/admin-graphql/2024-01/mutations/productVariantCreate"},{"content":"Arguments: input (ProductVariantInput!) ...","section":"Arguments","source_url":"https://shopify.dev/docs/api/admin-graphql/2024-01/mutations/productVariantCreate"}],"platform":"shopify","chunks_returned":2},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The /lookup endpoint retrieves a specific documentation page by ID and returns full chunked content","source_url":"https://docs.agentutil.net"},{"claim":"Pricing is $0.002 per request via x402 protocol using USDC on Base","source_url":"https://docs.agentutil.net"},{"claim":"Free tier provides 10 queries/day per IP with no signup","source_url":"https://docs.agentutil.net"},{"claim":"~38K chunks across 10 platforms indexed","source_url":"https://docs.agentutil.net"},{"claim":"Indexed platforms include Shopify, Stripe, Cloudflare Workers, Next.js, Anthropic API, OpenAI API, Tailwind CSS, htmx, x402, and Jesse","source_url":"https://docs.agentutil.net"},{"claim":"Queries resolve in under 100ms","source_url":"https://docs.agentutil.net"},{"claim":"OpenAPI spec defines required fields platform and page with optional type filter","source_url":"https://docs.agentutil.net/openapi.json"}],"useCases":["Retrieving full documentation for a specific Shopify GraphQL mutation after identifying it via semantic search","Fetching complete Stripe API reference pages for an AI coding assistant","Loading Cloudflare Workers documentation chunks into an agent's context window","Getting detailed Next.js or Tailwind CSS docs to answer developer questions","Building agentic workflows that need authoritative, sourced documentation"],"bestFor":["AI agents that need structured documentation retrieval across multiple platforms","Coding assistants that require full-page context after an initial semantic search","Workflows where per-page scraping is too slow or expensive compared to pre-indexed lookups"],"notFor":["Searching documentation by meaning (use the /query endpoint instead)","Accessing documentation for platforms not yet indexed by AgentUtil","Bulk downloading entire documentation sets"],"kindDetails":{},"updatedAt":"2026-04-22T01:22:17.609Z"}}