{"uid":"cap_xCvBav40GeA_rXWjk8beD","slug":"signalharness-link-graph-extractor-26041606","name":"SignalHarness Link Graph Extractor","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/link_graph_extract/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","pattern":"^https://","maxLength":2048,"minLength":9},"html":{"type":"string","maxLength":65536,"minLength":1},"baseUrl":{"type":"string","pattern":"^https://","maxLength":2048,"minLength":9}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"edges":["example"],"nodes":["example"],"anchors":["example"],"baseUrl":"example00","linkCount":0,"externalLinks":["example"],"internalLinks":["example"],"duplicateCount":0,"uniqueDestinationCount":0},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"link_graph_extract","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"b02ed9f247a705573b6f2f8f5ca89f178d4d23ccd6da547fd05490e8ffb0b53e","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qzAaklcbIiiDxSEXDwycF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts a structured link graph from a webpage, returning nodes, edges, internal links, external links, anchors, and link counts.","exampleAgentPrompt":"Can you pull out all the internal and external links from https://example.com/blog and give me the full link graph — nodes, edges, anchors, everything?","exampleUseCases":[{"title":"SEO link audit for a landing page","prompt":"Can you extract all the internal and external links from https://mysite.com/landing-page so I can audit which outbound links we're sending visitors to?"},{"title":"Broken link detection pipeline","prompt":"Pull the full link graph from https://docs.myapp.com/getting-started — I need the list of all linked URLs so I can check which ones are broken."},{"title":"Competitive link structure analysis","prompt":"Extract the complete link graph from https://competitor.com/features — I want to see their internal linking structure and how many unique destinations they link to."}],"resultDescription":"Returns a JSON object containing: graph nodes and edges representing the link structure, an array of anchor elements, arrays of internal and external links, total link count, duplicate link count, and unique destination count — plus a payment receipt with execution metadata, latency, and a SHA-256 result hash.","failureModes":["Invalid or unreachable URL returns an error or empty graph","HTML content exceeding 65,536 characters is rejected","URL not matching ^https:// pattern causes validation failure","Missing both url and html fields may cause a failed invocation","Payment failure results in no execution and a failed receipt status"],"whenToPreferThis":"Choose this endpoint when you need a structured, machine-readable link graph — including node/edge topology, internal vs. external link classification, anchor data, and deduplication stats — rather than a simple flat list of hyperlinks. It is well-suited for agent workflows that need to reason about page link structure programmatically, feed links into downstream crawlers, or audit SEO linking patterns at $0.01 per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:56:52.239Z","isFirstParty":false}