{ "x402Version": 2, "id": 38721, "slug": "38721", "resource": "https://scrapecheck.fly.dev/verify", "description": "Checks whether a value you did not fetch yourself is actually on the page it came from. Independently re-fetches the source and returns a signed pass/fail/unverifiable verdict. A claim is never certified unless the re-fetched page contains it, and anything unconfirmed is unverifiable, never pass. Server-rendered pages only. $0.01 per check. First 100 checks per client are free: resend this exact request with header X-Use-Free-Allowance: yes and no payment to use them.", "type": "http", "serviceName": "ScrapeCheck", "resourceType": "Utilities", "accepts": [ { "scheme": "exact", "network": "eip155:8453", "payTo": "0x455F20eC147477CAFcd6D77C1604529f3c4Ff665", "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913", "amount": "10000", "amountUsd": 0.01, "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "eip155:137", "payTo": "0x455F20eC147477CAFcd6D77C1604529f3c4Ff665", "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359", "amount": "10000", "amountUsd": 0.01, "maxTimeoutSeconds": 300 }, { "scheme": "exact", "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp", "payTo": "4HuSbgqgKkeUM5jEzAzLGpxtivCGda9eEtYc2Sp1fLpM", "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v", "amount": "10000", "amountUsd": 0.01, "maxTimeoutSeconds": 300 } ], "outputSchema": { "properties": { "example": { "properties": { "check_type": { "description": "The check contract used, e.g. web_field_v1.", "type": "string" }, "confidence": { "description": "The engine's confidence in the verdict, 0 to 1.", "type": "number" }, "engine": { "description": "Engine name and version digest that produced the verdict.", "type": "string" }, "evidence": { "description": "What the re-fetch observed.", "properties": { "lens_votes": { "description": "Boolean votes is_real, is_current, does_answer from the judging lenses.", "properties": { "does_answer": { "type": "boolean" }, "is_current": { "type": "boolean" }, "is_real": { "type": "boolean" } }, "type": "object" }, "refetch_excerpt": { "description": "Excerpt of the re-fetched page content the verdict was judged against.", "type": "string" }, "refetched_at": { "description": "UTC timestamp of the engine's own fetch of the page.", "type": "string" } }, "type": "object" }, "key_id": { "description": "Identifier of the signing key; resolve against GET /pubkey.", "type": "string" }, "reasons": { "description": "The stated reasons for the verdict.", "items": { "type": "string" }, "type": "array" }, "signature": { "description": "ed25519 signature over canonical sorted-key JSON of every field except signature.", "type": "string" }, "source_hash": { "description": "sha256 of the normalized page text the verdict judged; null when no anchor text was obtained.", "type": [ "string", "null" ] }, "verdict": { "description": "One of pass, fail, unverifiable.", "enum": [ "pass", "fail", "unverifiable" ], "type": "string" }, "verdict_id": { "description": "Unique identifier for this verdict; its issuance is confirmable at GET /verdicts/{verdict_id}.", "type": "string" }, "verifier_url": { "description": "The issuing service's URL; display only, never a trust root.", "type": "string" } }, "required": [ "verdict_id", "verdict", "confidence", "reasons", "evidence", "check_type", "engine", "key_id", "verifier_url", "source_hash", "signature" ], "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" }, "extensions": { "bazaar": { "info": { "input": { "body": { "asked": "get the current price and stock status of A Light in the Attic", "claim": { "in_stock": true, "price": "£51.77" }, "url": "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html" }, "bodyType": "json", "method": "POST", "type": "http" }, "output": { "example": { "check_type": "web_field_v1", "confidence": 0.97, "engine": "web_field_v1/0.2.1+6739b7f9ebf8", "evidence": { "lens_votes": { "does_answer": true, "is_current": true, "is_real": true }, "refetch_excerpt": "…$29.99…", "refetched_at": "2026-07-31T17:38:14.697Z" }, "key_id": "k2", "reasons": [ "claimed price £51.77 found in re-fetched page; page shows \"in stock\"" ], "signature": "ed25519:…", "source_hash": "sha256:…", "verdict": "pass", "verdict_id": "965abecd-a85f-45c7-98a2-49bde4bb9c51", "verifier_url": "https://scrapecheck.fly.dev" }, "type": "json" } }, "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "additionalProperties": false, "properties": { "body": { "properties": { "asked": { "description": "the original request, plain text", "type": "string" }, "claim": { "description": "the scraper's claimed field values", "type": "object" }, "url": { "description": "source page the scraper claims to have read (public http/https)", "type": "string" } }, "required": [ "url", "claim", "asked" ] }, "bodyType": { "enum": [ "json", "form-data", "text" ], "type": "string" }, "method": { "enum": [ "POST" ], "type": "string" }, "type": { "const": "http", "type": "string" } }, "required": [ "type", "method", "bodyType", "body" ], "type": "object" }, "output": { "properties": { "example": { "properties": { "check_type": { "description": "The check contract used, e.g. web_field_v1.", "type": "string" }, "confidence": { "description": "The engine's confidence in the verdict, 0 to 1.", "type": "number" }, "engine": { "description": "Engine name and version digest that produced the verdict.", "type": "string" }, "evidence": { "description": "What the re-fetch observed.", "properties": { "lens_votes": { "description": "Boolean votes is_real, is_current, does_answer from the judging lenses.", "properties": { "does_answer": { "type": "boolean" }, "is_current": { "type": "boolean" }, "is_real": { "type": "boolean" } }, "type": "object" }, "refetch_excerpt": { "description": "Excerpt of the re-fetched page content the verdict was judged against.", "type": "string" }, "refetched_at": { "description": "UTC timestamp of the engine's own fetch of the page.", "type": "string" } }, "type": "object" }, "key_id": { "description": "Identifier of the signing key; resolve against GET /pubkey.", "type": "string" }, "reasons": { "description": "The stated reasons for the verdict.", "items": { "type": "string" }, "type": "array" }, "signature": { "description": "ed25519 signature over canonical sorted-key JSON of every field except signature.", "type": "string" }, "source_hash": { "description": "sha256 of the normalized page text the verdict judged; null when no anchor text was obtained.", "type": [ "string", "null" ] }, "verdict": { "description": "One of pass, fail, unverifiable.", "enum": [ "pass", "fail", "unverifiable" ], "type": "string" }, "verdict_id": { "description": "Unique identifier for this verdict; its issuance is confirmable at GET /verdicts/{verdict_id}.", "type": "string" }, "verifier_url": { "description": "The issuing service's URL; display only, never a trust root.", "type": "string" } }, "required": [ "verdict_id", "verdict", "confidence", "reasons", "evidence", "check_type", "engine", "key_id", "verifier_url", "source_hash", "signature" ], "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" } }, "required": [ "input" ], "type": "object" } }, "errorNote": "A page that cannot be verified is NOT an error: unverifiable (or fail on /verify-presence) is a signed 200 verdict. 4xx means the request never reached the engine.", "errors": [ { "body": {}, "name": "Payment Required", "note": "the x402 v2 challenge is not in the body; it is base64-encoded JSON in the PAYMENT-REQUIRED response header", "status": 402, "when": "any request without valid payment, a free-allowance header, or a service key — including requests with malformed bodies: payment is checked before input validation" }, { "body": { "details": [ "url: Invalid url", "claim: Required", "asked: Required" ], "error": "invalid input contract" }, "name": "Bad Request", "note": "details lists one entry per failing field, in the form \": \"", "status": 400, "when": "payment or allowance has cleared but the body does not match the input contract" }, { "body": { "error": "rate limit exceeded — try again shortly" }, "name": "Too Many Requests", "status": 429, "when": "requests exceed the per-minute rate limit, paid or not" } ] }, "tags": [ "verification", "scraping", "data-quality", "trust", "web", "bazaar", "errorNote", "errors" ], "sourceHost": "scrapecheck.fly.dev", "lastUpdated": "2026-10-02T15:34:54.904Z", "quality": { "calls30d": 3, "uniquePayers30d": 3, "lastCalledAt": "2026-10-02T15:34:54.768Z" }, "metadata": { "serviceName": "ScrapeCheck", "extensions": { "bazaar": { "info": { "input": { "body": { "asked": "get the current price and stock status of A Light in the Attic", "claim": { "in_stock": true, "price": "£51.77" }, "url": "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html" }, "bodyType": "json", "method": "POST", "type": "http" }, "output": { "example": { "check_type": "web_field_v1", "confidence": 0.97, "engine": "web_field_v1/0.2.1+6739b7f9ebf8", "evidence": { "lens_votes": { "does_answer": true, "is_current": true, "is_real": true }, "refetch_excerpt": "…$29.99…", "refetched_at": "2026-07-31T17:38:14.697Z" }, "key_id": "k2", "reasons": [ "claimed price £51.77 found in re-fetched page; page shows \"in stock\"" ], "signature": "ed25519:…", "source_hash": "sha256:…", "verdict": "pass", "verdict_id": "965abecd-a85f-45c7-98a2-49bde4bb9c51", "verifier_url": "https://scrapecheck.fly.dev" }, "type": "json" } }, "schema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "input": { "additionalProperties": false, "properties": { "body": { "properties": { "asked": { "description": "the original request, plain text", "type": "string" }, "claim": { "description": "the scraper's claimed field values", "type": "object" }, "url": { "description": "source page the scraper claims to have read (public http/https)", "type": "string" } }, "required": [ "url", "claim", "asked" ] }, "bodyType": { "enum": [ "json", "form-data", "text" ], "type": "string" }, "method": { "enum": [ "POST" ], "type": "string" }, "type": { "const": "http", "type": "string" } }, "required": [ "type", "method", "bodyType", "body" ], "type": "object" }, "output": { "properties": { "example": { "properties": { "check_type": { "description": "The check contract used, e.g. web_field_v1.", "type": "string" }, "confidence": { "description": "The engine's confidence in the verdict, 0 to 1.", "type": "number" }, "engine": { "description": "Engine name and version digest that produced the verdict.", "type": "string" }, "evidence": { "description": "What the re-fetch observed.", "properties": { "lens_votes": { "description": "Boolean votes is_real, is_current, does_answer from the judging lenses.", "properties": { "does_answer": { "type": "boolean" }, "is_current": { "type": "boolean" }, "is_real": { "type": "boolean" } }, "type": "object" }, "refetch_excerpt": { "description": "Excerpt of the re-fetched page content the verdict was judged against.", "type": "string" }, "refetched_at": { "description": "UTC timestamp of the engine's own fetch of the page.", "type": "string" } }, "type": "object" }, "key_id": { "description": "Identifier of the signing key; resolve against GET /pubkey.", "type": "string" }, "reasons": { "description": "The stated reasons for the verdict.", "items": { "type": "string" }, "type": "array" }, "signature": { "description": "ed25519 signature over canonical sorted-key JSON of every field except signature.", "type": "string" }, "source_hash": { "description": "sha256 of the normalized page text the verdict judged; null when no anchor text was obtained.", "type": [ "string", "null" ] }, "verdict": { "description": "One of pass, fail, unverifiable.", "enum": [ "pass", "fail", "unverifiable" ], "type": "string" }, "verdict_id": { "description": "Unique identifier for this verdict; its issuance is confirmable at GET /verdicts/{verdict_id}.", "type": "string" }, "verifier_url": { "description": "The issuing service's URL; display only, never a trust root.", "type": "string" } }, "required": [ "verdict_id", "verdict", "confidence", "reasons", "evidence", "check_type", "engine", "key_id", "verifier_url", "source_hash", "signature" ], "type": "object" }, "type": { "type": "string" } }, "required": [ "type" ], "type": "object" } }, "required": [ "input" ], "type": "object" } }, "errorNote": "A page that cannot be verified is NOT an error: unverifiable (or fail on /verify-presence) is a signed 200 verdict. 4xx means the request never reached the engine.", "errors": [ { "body": {}, "name": "Payment Required", "note": "the x402 v2 challenge is not in the body; it is base64-encoded JSON in the PAYMENT-REQUIRED response header", "status": 402, "when": "any request without valid payment, a free-allowance header, or a service key — including requests with malformed bodies: payment is checked before input validation" }, { "body": { "details": [ "url: Invalid url", "claim: Required", "asked: Required" ], "error": "invalid input contract" }, "name": "Bad Request", "note": "details lists one entry per failing field, in the form \": \"", "status": 400, "when": "payment or allowance has cleared but the body does not match the input contract" }, { "body": { "error": "rate limit exceeded — try again shortly" }, "name": "Too Many Requests", "status": 429, "when": "requests exceed the per-minute rate limit, paid or not" } ] } }, "liveness": { "reliability": null }, "verified": false, "featured": false, "provider": { "host": "scrapecheck.fly.dev", "manifest_name": "scrapecheck.fly.dev", "source": "cdp-mirror", "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources", "submitted_at": "2026-10-14T01:15:01.050Z" }, "exampleResponse": { "example": { "check_type": "string", "confidence": 0, "engine": "string", "evidence": { "lens_votes": { "does_answer": true, "is_current": true, "is_real": true }, "refetch_excerpt": "string", "refetched_at": "string" }, "key_id": "string", "reasons": [ "string" ], "signature": "string", "source_hash": "string", "verdict": "pass", "verdict_id": "string", "verifier_url": "string" }, "type": "string" } }