MCP server safety audit
MCP server safety audit: completes a real initialize+tools/list handshake, then statically scans every tool's name/description/schema for hidden unicode (tool-poisoning), prompt-injection-style phrasing, and tools that quietly combine multiple high-privilege capabilities (network+filesystem+exec+credential access). If a GitHub repo is supplied, folds in a real software-supply-chain signal too.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
229 msmedian answer time
$0.06listed price per call
$0.06price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://x402-api-catalog.onrender.com/api/mcp-audit
| Category | Code and developer |
|---|---|
| Provider host | x402-api-catalog.onrender.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.06 | 229 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"repo": "example-org/example-mcp-server",
"url": "https://mcp.example.com/mcp"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"repo": {
"description": "optional owner/repo to fold in a GitHub supply-chain signal",
"type": "string"
},
"url": {
"description": "base URL of the MCP server (streamable-HTTP transport)",
"type": "string"
}
},
"required": [
"url"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"score": {
"type": "number"
},
"url": {
"type": "string"
},
"verdict": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}