# Fresh CC0 Feed

> Fresh CC0 Feed is a paid API for AI agents from cc0-feed-api.bodhinindustries.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Fetches verified provenance metadata for a specific CC0/Unlicense-dedicated work by ID from GitHub, Zenodo, or Freesound.

## Facts

- Endpoint: GET https://cc0-feed-api.bodhinindustries.workers.dev/v1/item
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fresh-cc0-feed-e5be97c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_84r78Oc7qX7s8pDIMvoXu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fresh-cc0-feed-e5be97c2
```

Example prompt: 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?

## When to prefer this

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.

## Known failure modes

- 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

## How this service works

Pay-per-call feed of freshly CC0/Unlicense-dedicated works (GitHub + Zenodo + Freesound) with verified provenance.

## Output

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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "id"
 ],
 "properties": {
  "id": {
   "type": "string",
   "description": "Item id: github:owner/repo, zenodo:<recordId>, or freesound:<soundId>."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fresh-cc0-feed-e5be97c2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cc0-feed-api.bodhinindustries.workers.dev](https://www.zero.xyz/host/cc0-feed-api.bodhinindustries.workers.dev/llms.txt)