Agent Card Validator MCP

https://agent-card-validator-mcp.mtree.workers.dev

Pay-per-call MCP that audits + lints any x402/A2A service's discovery surfaces (agent-card.json, ai-plugin.json, openapi.yaml, mcp.json, agent-discovery). Returns a 0-100 quality score plus an improvement TODO list and a strict JSON-schema lint report. Helps agents and developers grade x402 services on completeness/quality before integration. USDC on Base via x402 — no signup, no API key.

52
reliability

Reliability & health

Uptime and response time from our own unpaid probes, plus the reliability score built from them.

7 days 30 days

Uptime

100.0% avg
0% 50% 100% Fri 1 AMSun 9 AMTue 4 PMThu 11 PM

Response time

p50 189ms · p95 318ms
0ms 350ms 700ms Fri 1 AMSun 9 AMTue 4 PMThu 11 PM
Data table
Reliability history per time bucket over the last 7 days (hourly).
Bucket Uptime Probes Response time
8/14/2026, 1:00:00 AM 100% 1 173ms
8/14/2026, 3:00:00 AM 100% 1 184ms
8/14/2026, 4:00:00 AM 100% 1 193ms
8/14/2026, 5:00:00 AM 100% 1 152ms
8/14/2026, 6:00:00 AM 100% 1 174ms
8/14/2026, 7:00:00 AM 100% 1 170ms
8/14/2026, 8:00:00 AM 100% 1 154ms
8/14/2026, 10:00:00 AM 100% 1 154ms
8/14/2026, 11:00:00 AM 100% 1 151ms
8/14/2026, 12:00:00 PM 100% 1 174ms
8/14/2026, 1:00:00 PM 100% 1 163ms
8/14/2026, 3:00:00 PM 100% 1 184ms
8/14/2026, 4:00:00 PM 100% 1 165ms
8/14/2026, 5:00:00 PM 100% 1 161ms
8/14/2026, 6:00:00 PM 100% 1 188ms
8/14/2026, 7:00:00 PM 100% 1 184ms
8/14/2026, 8:00:00 PM 100% 1 154ms
8/14/2026, 9:00:00 PM 100% 1 178ms
8/14/2026, 11:00:00 PM 100% 1 187ms
8/15/2026, 12:00:00 AM 100% 1 167ms
8/15/2026, 1:00:00 AM 100% 1 49ms
8/15/2026, 2:00:00 AM 100% 1 198ms
8/15/2026, 3:00:00 AM 100% 1 152ms
8/15/2026, 4:00:00 AM 100% 1 177ms
8/15/2026, 6:00:00 AM 100% 1 178ms
8/15/2026, 7:00:00 AM 100% 1 172ms
8/15/2026, 8:00:00 AM 100% 1 211ms
8/15/2026, 9:00:00 AM 100% 1 145ms
8/15/2026, 10:00:00 AM 100% 1 184ms
8/15/2026, 11:00:00 AM 100% 1 166ms
8/15/2026, 12:00:00 PM 100% 1 171ms
8/15/2026, 1:00:00 PM 100% 1 145ms
8/15/2026, 3:00:00 PM 100% 1 323ms
8/15/2026, 4:00:00 PM 100% 1 153ms
8/15/2026, 5:00:00 PM 100% 1 147ms
8/15/2026, 6:00:00 PM 100% 1 146ms
8/15/2026, 7:00:00 PM 100% 1 344ms
8/15/2026, 8:00:00 PM 100% 1 168ms
8/15/2026, 10:00:00 PM 100% 1 149ms
8/15/2026, 11:00:00 PM 100% 1 170ms
8/16/2026, 12:00:00 AM 100% 1 152ms
8/16/2026, 1:00:00 AM 100% 1 189ms
8/16/2026, 2:00:00 AM 100% 1 206ms
8/16/2026, 3:00:00 AM 100% 1 159ms
8/16/2026, 5:00:00 AM 100% 1 8ms
8/16/2026, 6:00:00 AM 100% 1 257ms
8/16/2026, 7:00:00 AM 100% 1 238ms
8/16/2026, 8:00:00 AM 100% 1 255ms
8/16/2026, 9:00:00 AM 100% 1 240ms
8/16/2026, 10:00:00 AM 100% 1 165ms
8/16/2026, 12:00:00 PM 100% 1 231ms
8/16/2026, 1:00:00 PM 100% 1 210ms
8/16/2026, 2:00:00 PM 100% 1 243ms
8/16/2026, 3:00:00 PM 100% 1 209ms
8/16/2026, 4:00:00 PM 100% 1 174ms
8/16/2026, 5:00:00 PM 100% 1 155ms
8/16/2026, 7:00:00 PM 100% 1 226ms
8/16/2026, 8:00:00 PM 100% 1 242ms
8/16/2026, 9:00:00 PM 100% 1 286ms
8/16/2026, 10:00:00 PM 100% 1 208ms
8/16/2026, 11:00:00 PM 100% 1 227ms
8/17/2026, 12:00:00 AM 100% 1 279ms
8/17/2026, 2:00:00 AM 100% 1 183ms
8/17/2026, 3:00:00 AM 100% 1 160ms
8/17/2026, 4:00:00 AM 100% 1 173ms
8/17/2026, 5:00:00 AM 100% 1 227ms
8/17/2026, 6:00:00 AM 100% 1 257ms
8/17/2026, 7:00:00 AM 100% 1 288ms
8/17/2026, 9:00:00 AM 100% 1 220ms
8/17/2026, 10:00:00 AM 100% 1 161ms
8/17/2026, 11:00:00 AM 100% 1 188ms
8/17/2026, 12:00:00 PM 100% 1 316ms
8/17/2026, 1:00:00 PM 100% 1 229ms
8/17/2026, 2:00:00 PM 100% 1 183ms
8/17/2026, 4:00:00 PM 100% 1 216ms
8/17/2026, 5:00:00 PM 100% 1 166ms
8/17/2026, 6:00:00 PM 100% 1 230ms
8/17/2026, 7:00:00 PM 100% 1 181ms
8/17/2026, 8:00:00 PM 100% 1 275ms
8/17/2026, 9:00:00 PM 100% 1 149ms
8/17/2026, 11:00:00 PM 100% 1 215ms
8/18/2026, 12:00:00 AM 100% 1 325ms
8/18/2026, 1:00:00 AM 100% 1 232ms
8/18/2026, 2:00:00 AM 100% 1 224ms
8/18/2026, 3:00:00 AM 100% 1 319ms
8/18/2026, 4:00:00 AM 100% 1 201ms
8/18/2026, 6:00:00 AM 100% 1 218ms
8/18/2026, 7:00:00 AM 100% 1 184ms
8/18/2026, 8:00:00 AM 100% 1 267ms
8/18/2026, 9:00:00 AM 100% 1 202ms
8/18/2026, 10:00:00 AM 100% 1 311ms
8/18/2026, 11:00:00 AM 100% 1 224ms
8/18/2026, 1:00:00 PM 100% 1 215ms
8/18/2026, 2:00:00 PM 100% 1 229ms
8/18/2026, 3:00:00 PM 100% 1 185ms
8/18/2026, 4:00:00 PM 100% 1 230ms
8/18/2026, 5:00:00 PM 100% 1 243ms
8/18/2026, 6:00:00 PM 100% 1 263ms
8/18/2026, 8:00:00 PM 100% 1 206ms
8/18/2026, 9:00:00 PM 100% 1 224ms
8/18/2026, 10:00:00 PM 100% 1 160ms
8/18/2026, 11:00:00 PM 100% 1 289ms
8/19/2026, 12:00:00 AM 100% 1 193ms
8/19/2026, 1:00:00 AM 100% 1 168ms
8/19/2026, 3:00:00 AM 100% 1 185ms
8/19/2026, 4:00:00 AM 100% 1 176ms
8/19/2026, 5:00:00 AM 100% 1 292ms
8/19/2026, 6:00:00 AM 100% 1 386ms
8/19/2026, 7:00:00 AM 100% 1 307ms
8/19/2026, 8:00:00 AM 100% 1 150ms
8/19/2026, 10:00:00 AM 100% 1 182ms
8/19/2026, 11:00:00 AM 100% 1 236ms
8/19/2026, 12:00:00 PM 100% 1 231ms
8/19/2026, 1:00:00 PM 100% 1 274ms
8/19/2026, 2:00:00 PM 100% 1 295ms
8/19/2026, 3:00:00 PM 100% 1 203ms
8/19/2026, 4:00:00 PM 100% 1 668ms
8/19/2026, 5:00:00 PM 100% 1 208ms
8/19/2026, 6:00:00 PM 100% 1 169ms
8/19/2026, 8:00:00 PM 100% 1 382ms
8/19/2026, 9:00:00 PM 100% 1 225ms
8/19/2026, 10:00:00 PM 100% 1 263ms
8/19/2026, 11:00:00 PM 100% 1 279ms
8/20/2026, 12:00:00 AM 100% 1 335ms
8/20/2026, 1:00:00 AM 100% 1 175ms
8/20/2026, 2:00:00 AM 100% 1 195ms
8/20/2026, 3:00:00 AM 100% 1 160ms
8/20/2026, 5:00:00 AM 100% 1 161ms
8/20/2026, 6:00:00 AM 100% 1 162ms
8/20/2026, 7:00:00 AM 100% 1 193ms
8/20/2026, 8:00:00 AM 100% 1 164ms
8/20/2026, 9:00:00 AM 100% 1 209ms
8/20/2026, 10:00:00 AM 100% 1 192ms
8/20/2026, 12:00:00 PM 100% 1 184ms
8/20/2026, 1:00:00 PM 100% 1 169ms
8/20/2026, 2:00:00 PM 100% 1 195ms
8/20/2026, 3:00:00 PM 100% 1 228ms
8/20/2026, 4:00:00 PM 100% 1 171ms
8/20/2026, 6:00:00 PM 100% 1 155ms
8/20/2026, 7:00:00 PM 100% 1 203ms
8/20/2026, 8:00:00 PM 100% 1 231ms
8/20/2026, 9:00:00 PM 100% 1 155ms
8/20/2026, 10:00:00 PM 100% 1 186ms
8/20/2026, 11:00:00 PM 100% 1 186ms
52
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
100

How often it was reachable when we probed it (weight 35%).

Latency
100

How quickly it answers when it is up — fast scores high (weight 20%).

Security
100

Whether it serves over working TLS / https (weight 15%).

Transparency
36

Whether the operator disclosed what it does — description, schema, identity (weight 15%).

Activity
not yet measured

Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).

Confidence 100% — how much probe evidence backs this score. A thin history is flagged, not hidden.

See the scoring methodology for exactly how each number is computed.

Payment

Currencies
—
Networks
—
Facilitator
unknown
SDK
unknown

Operator

Company
inferred — unknown
Jurisdiction
—
Registrar
CloudFlare, Inc.
Domain registered
2019-02-08
Hosting network
CLOUDFLARENET
Hosting country
—

Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.

x402a2aagent-cardauditscoringdiscoveryopenapiwell-knownvalidatorcilintschema-validationjson-schemagoogle-a2a