{"uid":"cap_2quts7ioU5HE14YTxpljB","slug":"x402-listing-seo-audit-tool-e308fc0a","name":"x402 Listing SEO Audit Tool","description":"Fetch a public x402/API service, audit machine-readable discovery, compare directory visibility, inspect live pricing signals, and return ranking gaps plus concrete listing SEO fixes for x402 marketplaces. This deterministic endpoint does not call an upstream model. GET variant for agents, crawlers, and wallets that prefer query parameters over a JSON body. Pay up to $0.008 per request with x402 USDC on Base.","url":"https://gpt55.558686.xyz/v1/tools/x402-listing-seo-audit","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","additionalProperties":true},"queryParams":{"type":"object","anyOf":[{"required":["url"]},{"required":["base_url"]}],"properties":{"url":{"type":"string","maxLength":2048,"minLength":1},"query":{"type":"string","maxLength":120,"minLength":1},"base_url":{"type":"string","maxLength":2048,"minLength":1},"max_bytes":{"type":"integer","maximum":1048576,"minimum":4096},"timeout_ms":{"type":"integer","maximum":15000,"minimum":1000},"include_market":{"type":"boolean"},"include_optional":{"type":"boolean"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"ok":{"type":"boolean"},"tool":{"type":"string"},"fetchedAt":{"type":"string"}},"additionalProperties":true}}}}},"responseSchema":null,"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{"url":"https://example.com","query":"artificial intelligence","max_bytes":65536,"timeout_ms":5000,"include_market":false,"include_optional":false}}},"response":{"ok":false,"url":"https://example.com","tool":"x402ListingSeoAudit","grade":"F","query":"artificial intelligence","score":30,"origin":"https://example.com","topFixes":["Expose /openapi.json with machine-readable paid endpoints.","Expose /.well-known/x402 with x402 resources, accepts, network, payTo, and pricing links.","Publish exact or upto x402 payment schemes in discovery metadata.","Publish the x402 payTo address in discovery metadata.","Expose /pricing.json with price, limits, and billing mode.","Expose llms.txt or llms-full.txt for agent-readable product instructions.","Expose MCP server metadata when targeting agent tool buyers.","Expose a valid /.well-known/x402 discovery document with priced resources for every paid endpoint."],"discovery":{"ok":false,"payTo":null,"network":null,"schemes":[],"hasPayTo":false,"serviceName":null,"discoveryUrl":"https://example.com/.well-known/x402","resourceCount":0},"fetchedAt":"2026-06-12T05:02:25.261Z","durationMs":1573,"priceSignals":{"score":0,"minPriceUsd":null,"samplePrices":[],"hasTokenMetered":false,"minAmountAtomic":null,"priceFieldCount":0,"hasPricingDocument":false},"siteReadiness":{"grade":"F","ready":false,"score":10,"missingRequired":["/openapi.json","/.well-known/x402","/pricing.json"],"recommendations":["Expose /openapi.json with machine-readable paid endpoints.","Expose /.well-known/x402 with x402 resources, accepts, network, payTo, and pricing links.","Publish exact or upto x402 payment schemes in discovery metadata.","Publish the x402 payTo address in discovery metadata.","Expose /pricing.json with price, limits, and billing mode.","Expose llms.txt or llms-full.txt for agent-readable product instructions.","Expose MCP server metadata when targeting agent tool buyers."]},"keywordCoverage":{"score":70,"missing":["artificial","intelligence","base-usdc"],"present":["x402","api","pricing","openapi","mcp","buyer","discovery"]},"allRecommendations":["Expose /openapi.json with machine-readable paid endpoints.","Expose /.well-known/x402 with x402 resources, accepts, network, payTo, and pricing links.","Publish exact or upto x402 payment schemes in discovery metadata.","Publish the x402 payTo address in discovery metadata.","Expose /pricing.json with price, limits, and billing mode.","Expose llms.txt or llms-full.txt for agent-readable product instructions.","Expose MCP server metadata when targeting agent tool buyers.","Expose a valid /.well-known/x402 discovery document with priced resources for every paid endpoint.","Add buyer-search keywords to resource tags/descriptions: artificial, intelligence, base-usdc.","Publish exact atomic USDC amounts in x402 accepts plus /pricing.json so directories can normalize live prices.","Expose exact and/or upto payment schemes in discovery so automated buyers can quote without trial requests.","Expose OpenAPI operations with operationId, tags, request schema, and response examples for every paid route.","Include x402 in marketplace title and tags because most current buyer discovery is protocol-first."],"directoryVisibility":{"matches":[],"skipped":true,"sources":[],"checkedSources":0,"matchedSources":0}}},"exampleRequest":{"url":"https://example.com","query":"artificial intelligence","max_bytes":65536,"timeout_ms":5000,"include_market":false,"include_optional":false},"tags":["x402"],"displayCostAmount":"0.008","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_q3mh6uI6QGzgOot5ymRIH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits an x402 API listing's SEO and directory visibility, returning a grade, keyword coverage score, and top fixes.","exampleAgentPrompt":"Can you run an SEO audit on my x402 API listing at https://gpt55.558686.xyz and check how it ranks for the query 'gpt-5.5 x402' — I want to see the grade, keyword gaps, and which directories it's showing up in?","exampleUseCases":null,"resultDescription":"Returns a JSON object with: ok (boolean), tool name, SEO grade (letter grade), numeric score (0-100), topFixes (array of actionable recommendations), keywordCoverage (score, missing keywords, present keywords), and directoryVisibility (score, number of checked sources, number of matched sources).","failureModes":["Missing required url or base_url query parameter returns validation error","URL exceeds 2048 character limit","Timeout if target listing URL is unreachable within timeout_ms","Payment not fulfilled via x402 USDC on Base results in 402 response","Invalid HTTP method (non-GET) returns error"],"whenToPreferThis":"Use this endpoint when you need to audit a specific x402 API listing's SEO health, keyword coverage, and cross-directory visibility in a single paid-per-call request with no subscription required. Prefer this over general SEO tools when working specifically with x402 marketplace listings and needing structured, machine-readable audit results.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:42:19.716Z","isFirstParty":false}