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Council of AI — MCP Endpoint Probe
x402
Council of AI — MCP Endpoint Probe is a paid API for AI agents from councilof.ai, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-02).
Probes a public MCP (Streamable HTTP) endpoint to determine its reachability, authentication requirements, protocol version, and available tools, returning a signed, verifiable receipt.
Price / call$0.02
Success—
StatusUnknown
How this service works
We measure how AI systems behave against frozen, published tests and publish checkable evidence. Issued measurement cards are signed; unsigned supporting runs are labelled. Read the live board and corrections ledger.
Output
A JSON receipt containing: the probe state (RESPONDED, AUTH_REQUIRED, NOT_MCP, MCP_ERROR, UNREACHABLE, or TIMEOUT), tool count and SHA-256 of tool names (if available), the requested and negotiated MCP protocol versions, whether a tool was called, and a cryptographically signed receipt with SHA-256 hash and optional ed25519 signature for independent verification.
Example use cases
Pre-integration MCP server health check
“Before I wire up my agent to https://api.partner.com/mcp, can you probe it and tell me whether it's reachable, whether it needs auth, and what tools it lists? I want the signed receipt too.”
Verify MCP endpoint for a published registry
“I'm curating a directory of public MCP servers — can you check https://tools.myservice.io/mcp and give me its reachability state, negotiated protocol version, and a signed receipt I can attach as evidence?”
Diagnose a non-responding MCP server
“My MCP server at https://internal.mycompany.com/agent/mcp seems to be down — can you probe it and tell me if it's UNREACHABLE, TIMEOUT, or returning an MCP_ERROR so I know where to start debugging?”
Technical details
Endpoint
GEThttps://councilof.ai/api/ras/mcp-probe?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need an independent, cryptographically verifiable probe of a public MCP (Streamable HTTP) endpoint — especially when you need a signed receipt as auditable evidence of the endpoint's state, tool inventory, or protocol compliance. Prefer it over ad-hoc health checks when auditability and non-repudiation matter, or when building registries, directories, or compliance workflows around MCP servers.
Side effects
- UNREACHABLE — target URL could not be connected to
- TIMEOUT — target did not respond within the probe window
- NOT_MCP — target responded but is not an MCP-compatible endpoint
- MCP_ERROR — target is MCP but returned a protocol-level error
- AUTH_REQUIRED — target requires authentication before responding
- Invalid or non-HTTPS URL rejected with validation error
- Private, link-local, or metadata addresses refused
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"kind": "receipt",
"result": {
"kind": "csoai.ras.mcp-probe/0.1",
"state": "RESPONDED | AUTH_REQUIRED | NOT_MCP | MCP_ERROR | UNREACHABLE | TIMEOUT",
"tools": {
"count": "<int or null>",
"names_sha256": "<hex or null>"
},
"protocol": {
"requested": [
"2026-07-28"
],
"negotiated": "<version or null>"
},
"tool_called": false
},
"schema": "csoai.ras.mcp-probe/0.1",
"receipt": {
"sha256": "<hex>",
"sig_ed25519": "<hex or null>"
}
}
}Tags
x402
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