{"uid":"cap_ZlB9LQkp4K0A1Dz012qms","slug":"clink-forge-spdx-license-lookup-e2c6c464","name":"Clink Forge SPDX License Lookup","description":"Pay per call over x402. USDC on Base, no account, no API key. 28 government-sourced data products at $0.001–$0.05 per call, every response signed and provenance-chained.","url":"https://api.clinkforge.com/v1/p/spdx-license-lookup","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","properties":{"type":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object","required":["id"],"properties":{"id":{"type":"string","maxLength":80}},"additionalProperties":false}}},"output":{"type":"object"}}},"responseSchema":{"type":"json","example":{"data":[{"field":"value","_record_id":"R-100"}],"product":"example-product","row_count":1,"provenance":[{"hash":"sha256...","authority":"AGENCY","source_url":"https://agency.gov/data","observed_at":"2026-08-25T00:00:00Z"}],"attestation":{"signature":"base64...","result_digest":"sha256...","signing_key_id":"forge-signing-1"},"payment_receipt":{"amount_usd":0.01,"settlement_ref":"0xtx..."},"product_version":1},"description":"data rows + provenance chain + attestation"},"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_xSmEpdwvupNYZSYHgX9uZ","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":"Looks up an SPDX license record by ID and returns structured data rows with cryptographic provenance attestation, sold per-call over x402.","exampleAgentPrompt":"Look up the SPDX license record for 'MIT' and give me the attested data rows with provenance — I need to verify its details with a cryptographic signature.","exampleUseCases":[{"title":"Verify open source license compliance","prompt":"Pull the SPDX license record for 'Apache-2.0' with full provenance and attestation so I can confirm it's an approved license for our project."},{"title":"Enrich software bill of materials","prompt":"For each dependency in our SBOM tagged with SPDX ID 'GPL-3.0-only', fetch the attested license data so we can verify what obligations apply."},{"title":"Audit license claims in contract","prompt":"I need to verify the exact terms of the 'LGPL-2.1-or-later' license — can you look it up and return the cryptographically signed record so we can attach it to our audit trail?"}],"resultDescription":"Returns a JSON object containing: data rows with license payload fields, product metadata (slug, version), a provenance chain (license_id, source_url, observed_at timestamp), an Ed25519 cryptographic attestation signature, and a payment receipt with a settlement reference hash — providing a fully verifiable, machine-readable license record.","failureModes":["Missing or invalid 'id' query parameter returns a validation error","Unknown or non-existent SPDX license ID returns empty rows or a 404-equivalent response","Payment failure or insufficient USDC balance causes a 402 Payment Required response before data is returned","Network or upstream data source outage may cause a 503 or timeout","ID string exceeding 80 characters is rejected by schema validation"],"whenToPreferThis":"Choose this endpoint when you need machine-verifiable, cryptographically attested SPDX license data — not just a plain text description. It is ideal for automated compliance pipelines, software bill of materials (SBOM) enrichment, and audit workflows where provenance and a payment receipt serve as proof of data acquisition. Prefer it over free SPDX registry lookups when your system requires an Ed25519 signature and immutable provenance chain tied to a specific observation timestamp.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:42:15.176Z","isFirstParty":false}