{"uid":"cap_84r78Oc7qX7s8pDIMvoXu","slug":"fresh-cc0-feed-e5be97c2","name":"Fresh CC0 Feed","description":"Pay-per-call feed of freshly CC0/Unlicense-dedicated works (GitHub + Zenodo + Freesound) with verified provenance.","url":"https://cc0-feed-api.bodhinindustries.workers.dev/v1/item","method":"GET","headers":{},"bodySchema":{"type":"object","required":["id"],"properties":{"id":{"type":"string","description":"Item id: github:owner/repo, zenodo:<recordId>, or freesound:<soundId>."}}},"responseSchema":{"type":"object","required":["schema_version","item"],"properties":{"item":{"type":"object","required":["item_id","type","title","source","license","declared_date"],"properties":{"type":{"enum":["image","audio","dataset","code"],"type":"string"},"title":{"type":"string"},"source":{"enum":["github","zenodo","freesound"],"type":"string"},"item_id":{"type":"string","example":"zenodo:21054103","description":"Stable id: github:owner/repo, zenodo:<recordId>, or freesound:<soundId>."},"license":{"type":"string","example":"CC0-1.0"},"asset_url":{"type":"string","format":"uri"},"confidence":{"enum":["high","medium","low"],"type":"string"},"license_url":{"type":["string","null"],"format":"uri"},"declared_date":{"type":"string","format":"date-time","description":"When the work was dedicated to the public domain."},"last_activity":{"type":"string","format":"date-time"},"license_sha256":{"type":"string","description":"SHA-256 of the verbatim LICENSE file (deep provenance; single-item lookups)."},"source_page_url":{"type":"string","format":"uri"},"license_evidence":{"type":"string","description":"How the public-domain status was verified."}},"description":"A work freshly dedicated to the public domain (CC0/Unlicense), normalized across sources."},"cached":{"type":"boolean"},"disclaimer":{"type":"string"},"schema_version":{"type":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tiGlEqXfqhZpCCgGY-Ym9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches verified provenance metadata for a specific CC0/Unlicense-dedicated work by ID from GitHub, Zenodo, or Freesound.","exampleAgentPrompt":"Can you pull the CC0 provenance details for zenodo:21054103 — I want to see the license evidence, confidence level, and when it was declared public domain?","exampleUseCases":[{"title":"Verify Freesound audio is CC0","prompt":"I found a sound effect on Freesound that I want to use in my commercial game — can you check if freesound:123456 is genuinely CC0 and show me the license evidence and confidence rating before I use it?"},{"title":"Get SHA-256 hash for Zenodo dataset","prompt":"I need to audit the license integrity of a dataset we're using — can you pull the provenance metadata for zenodo:7890234, specifically the SHA-256 fingerprint of the license file and when it was declared public domain?"},{"title":"Confirm Unlicense dedication of GitHub repo","prompt":"Before we build on top of this library, can you verify that github:torvalds/myproject is properly dedicated under the Unlicense — I want to see the structured license evidence and the declared date?"}],"resultDescription":"Returns a normalized metadata object for the requested work including: item_id, type (image/audio/dataset/code), title, source platform, license string (e.g. CC0-1.0), asset URL, license URL, declared date, last activity timestamp, SHA-256 hash of the LICENSE file, source page URL, license evidence description, and a confidence rating (high/medium/low). Also includes a cached flag and schema version.","failureModes":["Invalid or malformed item ID format returns an error (must match github:owner/repo, zenodo:<recordId>, or freesound:<soundId>)","Item not found in the feed returns a 404 or empty result","Payment not included or insufficient USDC triggers a 402 Payment Required response","Low-confidence items may return 'low' confidence score with limited license evidence","Source platform (GitHub/Zenodo/Freesound) temporarily unavailable may cause stale or missing data"],"whenToPreferThis":"Use this endpoint when you need verified, provenance-backed CC0 or Unlicense status for a specific known item ID from GitHub, Zenodo, or Freesound — especially when you require the license SHA-256 fingerprint, declared date, or structured evidence of public domain dedication. Prefer this over general web scraping or manual license checks when you need machine-readable, normalized license metadata with a confidence score.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:32:18.797Z","isFirstParty":false}