crosscheck by crosscheckapi.com
MCP server · Payment & monetisation platforms · indexed, not reviewed
HostedLocalvendor's ownwidely used
Not reviewed
No score, grade or rank. This listing is facts from the official MCP registry and our own checks, and it stays out of the rankings until the panel reviews it.
Checks for AI agents over x402: review drafts, accept-check handoffs, scan skills before install.
Facts
- MCP registry
com.crosscheckapi/crosscheck· 0.5.5- Endpoint
https://crosscheckapi.com/mcp- Packages
npmcrosscheckapi stdio- Website
- crosscheckapi.com
- npm / week
- 1.7k
- GitHub stars
- 0
- Registry entry
- updated 28 Sep 2026
From the official MCP registry, the package registries and our own checks. JSON · Markdown
Why it's listed
- It's published in the registry under crosscheckapi.com, a namespace the registry only gives to whoever proves they control that domain.
- It's in real use: 1,663 npm downloads a week.
Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.
Tools it lists 6 · about 1,965 tokens of context · checked 20 hours ago
| Tool | What it does | Hint |
|---|---|---|
checkReview a draft | 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… | |
acceptCheck a deliverable against its task | 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… | |
skillcheckSecurity review of a skill or MCP server | 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… | |
skillcheck_lookupLook up a past skillcheck | 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_receiptVerify a crosscheck 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… | |
resultGet a 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. |
What https://crosscheckapi.com/mcp answered to tools/list, asked without credentials. answered without the initialize handshake. The token figure is the size of the list as sent, divided by four; a model sees about that much before it calls anything. Full definitions, input schemas included, are in the listing's JSON under mcpTools.
How its tools read to an agent 0 errors · 8 warnings · 1 note
- warnTC11skillcheck_lookupits one parameter, bundle_sha256, has no description
- warnTC13verify_receiptreceipt (object with no properties), sources (array with no items), verdict (object with no properties)
- warnTC16acceptno readOnlyHint or destructiveHint
- warnTC16checkno readOnlyHint or destructiveHint
- warnTC16resultno readOnlyHint or destructiveHint
- warnTC16skillcheckno readOnlyHint or destructiveHint
- warnTC16skillcheck_lookupno readOnlyHint or destructiveHint
- warnTC16verify_receiptno readOnlyHint or destructiveHint
- noteTC24server6 of 6 tools have no outputSchema
The checks from /check and anchor check, run each day on the list above: about 1,965 tokens of definitions. Not part of the score yet. Check your own server.