LinkProof: verify up to 10 URLs before an agent cites or sends them
LinkProof: verify up to 10 URLs before an agent cites or sends them. Per URL returns verdict (live, soft_404, parked, dead, blocked, unreachable), HTTP status, final URL after redirects, title, meta description, and optional check that an expected phrase appears on the page. Catches hallucinated or rotted links.
1 route settlement-verified · $0.005 USDC/request · 1 endpoint · Verification · base network · x402 protocol
Verified routes
POST /v1/verify-links· $0.005 · Verified with a $0.005 test payment on 14 Nov 2026 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpListing facts
- Provider
- LinkProof citations: verify up to 10 references an agent is about to cite
- Hosted at
linkproof.bsptimber.workers.dev- Category
- Verification
- Price
- $0.005 USDC per request
- Payment networks
- Base
- Settlement-verified
- 1 route, last checked 2026-11-14
- Listed on PayAPI Market
- 2026-11-14
Try LinkProof: verify up to 10 URLs before an agent cites or sends them
Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.
curl -i -X POST "https://linkproof.bsptimber.workers.dev/v1/verify-links"About this API
LinkProof: verify up to 10 URLs before an agent cites or sends them is listed in the Verification category with pricing at $0.005 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-11-14. View receipt on Basescan.
Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.
This API exposes 1 endpoint.
Add this badge to your README
Paste this on your site. The link points at this listing. Listing is free and PayAPI takes 0% of each job.
Markdown
[](https://payapi.market/api/linkproof-verify-up-to-10-urls-before-an-agent-cites-or-sends-them)
HTML
<a href="https://payapi.market/api/linkproof-verify-up-to-10-urls-before-an-agent-cites-or-sends-them"><img src="https://payapi.market/badge/linkproof-verify-up-to-10-urls-before-an-agent-cites-or-sends-them.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>
Questions about this API
What does LinkProof: verify up to 10 URLs before an agent cites or sends them do?
LinkProof: verify up to 10 URLs before an agent cites or sends them. Per URL returns verdict (live, soft_404, parked, dead, blocked, unreachable), HTTP status, final URL after redirects, title, meta description, and optional check that an expected phrase appears on the page. Catches hallucinated or rotted links. It is provided by LinkProof citations: verify up to 10 references an agent is about to cite.
How much does LinkProof: verify up to 10 URLs before an agent cites or sends them cost?
LinkProof: verify up to 10 URLs before an agent cites or sends them is priced at $0.005 USDC per request, paid per call with no subscription. Verified with a $0.005 test payment on 14 Nov 2026. The exact amount for each call is in the HTTP 402 response before any money moves.
Do I need an API key or account to use LinkProof: verify up to 10 URLs before an agent cites or sends them?
No. LinkProof: verify up to 10 URLs before an agent cites or sends them uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.
Has LinkProof: verify up to 10 URLs before an agent cites or sends them been verified?
Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-11-14.
How does an AI agent find LinkProof: verify up to 10 URLs before an agent cites or sends them?
Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.
More Verification APIs · Browse the marketplace · List your own API
Related APIs
- Solana validator stats: Get live stats for one Solana validator by vote account · 1 route verified · Solana validator stats: Get live stats for one Solana validator by vote account or identity pubkey.
- Verify x402 payment and signed delivery compatibility; this does not inspect · 1 route verified · Verify x402 payment and signed delivery compatibility; this does not inspect your Agent target
- LinkProof archive: for up to 10 URLs (e · 1 route verified · LinkProof archive: for up to 10 URLs (e.g. dead links), find the closest Internet Archive Wayback Machine snapshot, optionally nearest to a given date. Returns snapshot URL, capture timestamp, captured HTTP status and distance in days from the requested date. Use it to replace or back up rotted citations.
- LinkProof citations: verify up to 10 references an agent is about to cite · 1 route verified · LinkProof citations: verify up to 10 references an agent is about to cite. Accepts DOI, arXiv id, PubMed id, free-text reference, or {title, authors, year}. Checks Crossref/DataCite, arXiv and PubMed; returns per citation exists, matched metadata (title, authors, year, venue, URL), field mismatches, confidence and verdict (verified, mismatch, not_found). Catches hallucinated or misattributed papers.
- Email Domain MX SPF DMARC Inspector · 1 route verified · Check email domain SPF, DMARC and MX records, including null MX and the published DMARC policy. Diagnose domain authentication setup. Does not verify mailbox existence, SMTP delivery or a person.
- Call before a SEPA transfer uses a structured creditor reference · 1 route verified · Call before a SEPA transfer uses a structured creditor reference. Checks ISO 11649. Does not say the invoice exists.
More from LinkProof citations: verify up to 10 references an agent is about to cite
- LinkProof archive: for up to 10 URLs (e
- LinkProof citations: verify up to 10 references an agent is about to cite
- View all from LinkProof citations: verify up to 10 references an agent is about to cite
By LinkProof citations: verify up to 10 references an agent is about to cite