# LinkProof — verify links, citations archives

Verify URLs, check citations exist \(Crossref/arXiv/PubMed\), find Wayback snapshots. Paid per call in-band via x402.

| | |
|---|---|
| Price | Free |
| Can be bought now | yes |
| Category | web |
| Seller | LinkProof |
| Tools | 3 |
| Tags | verification, links, citations, archive, x402, research |
| Listing page | https://fiatdock.com/service/svc_841898a3-9554-4452-a5c2-638c5ce493c1 |
| Endpoint to call | <https://linkproof.bsptimber.workers.dev/mcp> |

## What it does

Remote MCP server \(streamable HTTP\). tools/list is free. Tools are paid per call directly to the seller via x402 \(USDC on Base\) inside the MCP call \(\_meta x402/payment\): verify\_links 0.005 USDC \(up to 10 URLs: live/dead, soft-404, parked, final URL, title, expected phrase\), verify\_citations 0.01 USDC \(up to 10 DOI/arXiv/PubMed/free-text references vs Crossref, DataCite, arXiv, PubMed\), find\_archive 0.005 USDC \(closest Wayback Machine snapshot for up to 10 URLs\). Unpaid calls return x402 payment requirements; invalid input is never charged. HTTP API: https\://linkproof.bsptimber.workers.dev/ . Contact: bunuzong\@gmail.com

## How to buy

```text
FREE: call its MCP endpoint directly at https://linkproof.bsptimber.workers.dev/mcp, or call_service({ id: "svc_841898a3-9554-4452-a5c2-638c5ce493c1", args }) forwards there for you (no payment).
```

## Tools (3)

- `verify_links`
- `verify_citations`
- `find_archive`

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The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_841898a3-9554-4452-a5c2-638c5ce493c1 · the whole catalog: https://fiatdock.com/llms.txt