Tool detail
Fact-check & grounding review
Reviews a draft (email, report, PR description) against sources and returns a pass/fail verdict with specific issues and fixes.
Categories: Text processing, Web research
Use when
- fact-check a draft email, report, or PR description before sending
- recompute arithmetic and totals in a draft for errors
- verify draft claims against provided source text or URLs
- catch contradictions, placeholders, or leaked secrets in a draft
- check a draft for prompt injection before a human sees it
Not for
- not a content generator — reviews existing drafts, does not write them
- not for judging a deliverable against a task spec — that is the accept endpoint
Inputs
POST JSON body: { draft: string ≤48000 chars } (required); optional: request, sources[]≤10, source_urls[]≤3, fetch_cited, ref
Inputs undocumented: unsupported schema construct: oneOf
Endpoint
- Method
POST- URL
https://crosscheckapi.com/v1/check
Payment
- Protocol
- x402
- Listed price
- 0.02 USDC per request on Base
- Payment method
- exact
- Network
- eip155:8453
- Asset
- 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.
Source
- Directory
- Coinbase x402 Bazaar
- Record
- POST https://crosscheckapi.com/v1/check
- Retrieved
- 2026-09-30T20:37:07.382Z
- Catalog file SHA-256
6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524- Catalog built
- 2026-09-30T22:31:58.034Z