skillcheck

Security scan of an AI agent skill or MCP server before install: a malware and prompt injection audit of its files (read, never run).

Security scan of an AI agent skill or MCP server before install: a malware and prompt injection audit of its files (read, never run). Finds downloads piped to a shell, credential and wallet theft, secrets sent over the network, persistence, hidden Unicode, and instructions aimed at the agent or the scanner. Supply-chain check with a signed receipt keyed to the file hashes; bundles already scanned are free to look up. $0.03.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.03 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x2fe63598…4296a943

URL

https://crosscheckapi.com/v1/skillcheck

MCP server on this host: com.crosscheckapi/crosscheck

Seen

first 9 days ago · last 11 hr ago

15 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Base Sepolia

Listed on?

Base, Base Sepolia

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.509 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held back by sample size, not by the seller · gap to 1.000 is 0.491: 0.289 uncertain ? + 0.202 short ? · 0.141 to C

How the composite of 0.509 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	1.00	0.527		0.316	0	−0.284
latency p95 it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
price stability the price stayed where it was listed	0.20	0.99	0.962		0.192	−0.002	−0.006
Composite	1.00		0.509	gap to 1.000 = 0.491 · 0.202 short · 0.289 uncertain	0.509	−0.202	−0.289

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.600 × 0.527   liveness       
+ 0.200 × 0.000   latency p95    
+ 0.200 × 0.962   price stability
= 0.509           → UNRATED: 13 of 30 paid calls      weights 2026.09.6 · 13 samples · seed cap_01M3BHEX2Q09DJSRYQ9BAXG7QK|2026-09-02T16:22:16.685Z|2026.09.6

Verify it yourselfnpx teppi-check https://crosscheckapi.com/v1/skillcheckcurl -s https://api.teppi.xyz/v1/trust/cap_01M3BHEX2Q09DJSRYQ9BAXG7QK