crosscheck: independent review of an agent's draft
Before your human sees it, send your draft (email, report, summary, answer) and get a structured JSON verdict from an independent reviewer plus a signed receipt. Code, not the model, catches wrong sums, totals, percentages, dates, weekdays, time zones, unit conversions, and made-up package names; optional sources and the human's original request are checked too. $0.02 per check. Same service also offers accept ($0.03, checks a deliverable against its task) and skillcheck ($0.03, security review of a skill or MCP server before install). Free price preview: GET https://crosscheckapi.com/v1/quote?draft=... Docs: https://crosscheckapi.com/llms.txt
1 of 3 routes settlement-verified · $0.02–$0.03 USDC/request · 3 endpoints / 4 tools · Verification · base network · x402 protocol
Verified routes
POST /v1/check· $0.02 to $0.03 · Verified with a $0.02 test payment on 27 Sep 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
- crosscheck
- Hosted at
crosscheckapi.com- Category
- Verification
- Price
- $0.02 to $0.03 USDC per request
- Endpoints
- 3
- MCP tools
- 4
- Payment networks
- Base
- Settlement-verified
- 1 route, last checked 2026-09-27
- Listed on PayAPI Market
- 2026-09-27
Try crosscheck: independent review of an agent's draft
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://crosscheckapi.com/v1/check"About this API
crosscheck: independent review of an agent's draft is listed in the Verification category with pricing at $0.02–$0.03 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-09-27. 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 3 endpoints. Only the verified route has been tested by PayAPI Market. Other routes are unverified.
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<a href="https://payapi.market/api/crosscheck-independent-review-of-an-agent-s-draft"><img src="https://payapi.market/badge/crosscheck-independent-review-of-an-agent-s-draft.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>
Questions about this API
What does crosscheck: independent review of an agent's draft do?
Before your human sees it, send your draft (email, report, summary, answer) and get a structured JSON verdict from an independent reviewer plus a signed receipt. Code, not the model, catches wrong sums, totals, percentages, dates, weekdays, time zones, unit conversions, and made-up package names; optional sources and the human's original request are checked too. $0.02 per check. Same service also offers accept ($0.03, checks a deliverable against its task) and skillcheck ($0.03, security review of a skill or MCP server before install). Free price preview: GET https://crosscheckapi.com/v1/quote?draft=... Docs: https://crosscheckapi.com/llms.txt It is provided by crosscheck.
How much does crosscheck: independent review of an agent's draft cost?
crosscheck: independent review of an agent's draft is priced at $0.02 to $0.03 USDC per request, paid per call with no subscription. Verified with a $0.02 test payment on 27 Sep 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 crosscheck: independent review of an agent's draft?
No. crosscheck: independent review of an agent's draft 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 crosscheck: independent review of an agent's draft been verified?
Yes, 1 route of its 3 endpoints. 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 2026-09-27. Routes that were not paid for are unverified.
How does an AI agent find crosscheck: independent review of an agent's draft?
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.
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