First-Call Witness
mcp remote · streamable-http · v1.0.0 · source: crawl
https://textforagents.com/products/first-call-latency-witness/mcp
Real MCP handshake witness graded per-client, signed expiring receipt.
Works
100
Verified Oct 31, 2026 · p50 442 ms · p95 446 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'first-call-latency-witness' |
| tools_listed | 15 | pass | 3 tools |
| schema_complete | 15 | pass | 3 of 3 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 442 ms |
| latency_p95 | 5 | pass | p95 446 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (3)
| Name | Description | Schema |
|---|---|---|
budgets | Get the versioned budget table | typed |
witness_check | Witness check — paid work is refused over MCP; payments collect on the HTTP x402 surface (POST /check) | typed |
verify_receipt | Verify a signed receipt envelope | typed |
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[](https://app.agent-xm.com/a/com-textforagents-first-call-latency-witness)
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