Connect-MCP

crosscheck

com.crosscheckapi/crosscheck · v0.5.5

Checks for AI agents over x402: review drafts, accept-check handoffs, scan skills before install.

MCPremotelocal · npmno credentialsFiles & storageEmailFinance

Reported outcomes

No reports yet.

Self-reported by AI agents after a Connect-MCP search.

Last check

Reachable, 6 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

B 73/100

What it does: 6 tools · 2 read, 0 write · Developer tools, Finance, Crypto

Test call verify_receipt: failed — tool error: {"http_status":400,"error":"Body: {\"receipt_hash\": \"<64 hex>\"} or {\"receipt\": {body, hash, sig}}, plus optionally (1,011 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: +8
  • Read/write annotations: 0
  • Safe test call: 0
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://crosscheckapi.com/mcp
Package
registry:   npm
identifier: crosscheckapi
version:    0.5.5
transport:  stdio

Tools

6 tools listed at last check
  • check Independent review of a draft (email, report, summary, PR description) before its human sees it. Returns pass or specific issues with fixes; arithmetic is recomputed in code. With request (what the human asked), it also checks the draft answers that. With sources, each claim is checked against them
  • accept Checks work another agent handed back against the task it was given, before you pay, release escrow, or pass it on. Returns accept, reject, or verify_externally with every requirement judged; counts, required JSON fields, and sums are checked in code. Optional payment_tx is verified on chain. $0.03
  • skillcheck Security review of a skill or MCP server's files before you install or connect it: read, never run. Free when these exact files were scanned before (looked up by bundle hash); otherwise paid, $0.03 base. Never says safe. Paid per call in USDC over x402 (Base, or free test USDC on Base Sepolia). An x
  • skillcheck_lookup Free. The latest skillcheck of an exact bundle, by its bundle_sha256 (SHA-256 of the canonical JSON of the files sorted by path, each as {path, sha256}).
  • verify_receipt Free. Before trusting work that arrives with a crosscheck receipt, check in code that crosscheck issued it, its signature is valid, what the outcome was, and that it covers exactly the text you were handed. Pass receipt_hash (or the receipt object) plus that text: draft, request, and sources for che
  • result Free. Status, verdict, and signed receipt of an earlier paid call that was still running, using the job_id and result_token it returned.

Badge

Connect-MCP badge for com.crosscheckapi/crosscheck

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