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Proofivy Library Server – Verified Article Fetch
x402
Proofivy Library Server – Verified Article Fetch is a paid API for AI agents from library.proofivy.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Fetches article text from a URL and returns it together with a cryptographic content ID (CID) that commits to the exact bytes delivered, paid per request via x402.
Price / call$0.01
Success—
StatusUnknown
How this service works
Content fetch API. Pay per request via x402 and receive the article text together with its Proofivy content-id (CID), a cryptographic commitment to the exact bytes returned.
Output
A JSON object containing: 'text' (the full article body), 'status' ('success' on successful retrieval), and 'proofivy_cid' (a IPFS-style CID string such as 'bafkrei...' that is a cryptographic commitment to the exact bytes of the returned content).
Example use cases
Example prompt
“Fetch the full text of this article — https://cryptoslate.com/bitcoin-investment-thesis-2024/ — and give me the Proofivy CID so I can verify the exact content that was returned.”
Technical details
Endpoint
POSThttps://library.proofivy.com/proofivyWhen to prefer
Choose this endpoint when you need both the full text of a web article AND a cryptographic proof (CID) that the content has not been altered — ideal for audit trails, fact-checking pipelines, or any workflow where byte-level content integrity matters. Prefer over generic scrapers when tamper-evidence or verifiability is a requirement.
Side effects
- Invalid or unreachable URL returns an error status
- Article behind a hard paywall or authentication wall may not be retrievable
- Malformed slug that cannot be resolved to a canonical URL
- Payment failure via x402 if insufficient USDC balance
- Unsupported domain or content type returns an error
Input
{
"content_url": "bitcoin-investment-thesis-overview"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| content_url | string | The URL or slug of the content to retrieve |
Output
{
"text": "content url not found, possible inputs: [{'slug': 'about', 'date': '2025-10-31'}, {'slug': 'app_privacy', 'date': '2025-10-31'}, {'slug': 'apps', 'date': '2025-10-31'}, {'slug': 'content_authenticity_initiative', 'date': '2026-02-19'}, {'slug': 'cryptoslate_x402_pay_per_article_is_live', 'date': '2026-02-19'}, {'slug': 'docs', 'date': '2025-10-31'}, {'slug': 'get_paid_for_llm_lookups', 'date': '2026-02-19'}, {'slug': 'how_to_publish_to_x402_on_your_iphone', 'date': '2026-02-19'}, {'slug': 'ip_lock', 'date': '2025-10-31'}, {'slug': 'lab_for_germinal_center_biology', 'date': '2025-10-31'}, {'slug': 'mcp_server', 'date': '2026-02-19'}, {'slug': 'use_cases', 'date': '2026-02-19'}, {'slug': 'what_is_proofivy', 'date': '2025-10-31'}]",
"status": "error - content url not found",
"proofivy_cid": ""
}Schema · Response
{
"type": "json",
"example": {
"text": "The verified article content...",
"status": "success",
"proofivy_cid": "bafkreiexample..."
}
}Tags
x402
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