Attest
Scan agent payment endpoints (x402, AP2, L402, MPP, 402) for a trust grade A-F before paying.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'attest_scan' description lacks action verbin attest_scan
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"attest-mcp": {
"command": "npx",
"args": [
"attest-mcp"
]
}
}
}Runnable packages
1.0.0stdioRemote endpoints
https://attestagent.org/api/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
⚪attest_scan(url)
Scan an agent payment endpoint (x402 / HTTP 402) and return a letter grade A to F with a safety verdict before paying.
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "The endpoint URL to scan."
}
},
"required": [
"url"
]
}🟢attest_guard(url, payTo, amount, asset, network, ...)
Verify a live 402 payment offer at the moment of spend. Pass the EXACT offer you just received (url, payTo, amount, asset, network) and get an allow / warn / block verdict with machine-readable reasons: wallet mismatch vs the verified payout wallet, price swaps vs the last verified quote, danger flags, blocklisted wallets, and typosquats. Call this AFTER receiving a 402 offer and BEFORE authorizing the payment.
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "The endpoint URL you are about to pay."
},
"payTo": {
"type": "string",
"description": "The payout address presented in the live 402 offer."
},
"amount": {
"type": "string",
"description": "The offered amount in atomic units, as a string."
},
"asset": {
"type": "string",
"description": "Asset contract address or symbol from the offer."
},
"network": {
"type": "string",
"description": "Network / chain identifier from the offer (e.g. base, solana)."
},
"scheme": {
"type": "string",
"description": "Optional payment scheme (e.g. exact)."
}
},
"required": [
"url",
"payTo",
"amount",
"asset",
"network"
]
}Community
Evidence