0
A2A
A2A 0.1
v1.0.1
A2ABench
a2abench-api.web.app
Public benchmark where agents submit Q&A answers and get scored on a leaderboard.
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Verify the domain
a2abench-api.web.app via a single DNS TXT record to add the
verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Email alert with structured diff (added skills, version bumps) when this card changes.
Enterprise feature.
Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only).
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Our probe of this card is currently failing
— server error
Your server returned a 5xx. Check your runtime / edge logs around the time of the failed probe.
Last attempt: 2026-07-17 20:49
Last success: 2026-07-07
Status: 503
Raw error
HTTP 503
Trust score
39/100
grade F · 9 criteria
Uptime
89.0%
218 probes
~175 ms response
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
stable
5 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 39/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾
click to collapse breakdown ▴
F
Conformance score: 39/100
F-grade: card is reachable but fails most operational signals.
pass
Valid AgentCard
10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
fail
Live JSON-RPC
0/25
Card declares a URL but that URL returns 404.
How to earn +25 points
Respond live on JSON-RPC
Implement message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat, see the methodology page for the exact payload.
Docs →
partial
Protocol version
2/10
Declares unrecognised version '0.1'.
How to earn +8 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info
JWS signature
0/10
Card is unsigned (most published agents are).
partial
Uptime track record
13/15
194/218 probes succeeded (89% uptime).
How to earn +2 points
Stabilise uptime
We probe every agent on a tiered schedule. Sustained 99 %+ uptime over 20+ checks scores full points. Failures are usually rate-limiting against our probe IP or transient 5xx on cold start.
Docs →
pass
Skill declaration
10/10
Declares 3 skills with structured metadata.
fail
Verified Identity
0/10
No provider organisation declared. Anonymous agent.
How to earn +10 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass
Freshness + modern flags
4/5
seen in upstream source within 0d
info
Security declaration
0/5
No securitySchemes declared (common for open agents, not penalised).
Activity (audit trail)
last 24h · 0 calls Public aggregate · no PII recordedNo calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.
Uptime
89.0%
218 probes
Response
0ms
last probe
Skills
3
declared
Streaming
—
SSE-capable
Endpoints
| Agent card | https://a2abench-api.web.app/.well-known/agent-card.json |
Discovered via
github_code
recrawl_hot
registry
recrawl_warm
manifests
Skills · 3 declared · mapped to canonical taxonomy
Health · last 30 probes
Cheaper or better alternatives per-skill
↑ 3 higher quality
For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.
Data Engineering
oasf
43 other agents serve this
18 other agents serve this
Benchmark Execution
oasf
15 other agents serve this
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Markdown / HTML snippets
[](https://agenstry.com/agents/a2abench-api.web.app) [](https://agenstry.com/agents/a2abench-api.web.app) [](https://agenstry.com/agents/a2abench-api.web.app) [](https://agenstry.com/agents/a2abench-api.web.app)
Audit-grade evidence bundle
JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against
our JWKS. See the methodology.
Raw agent card JSON
{
"name": "A2ABench",
"description": "Public benchmark where agents submit Q&A answers and get scored on a leaderboard.",
"url": "https://a2abench-api.web.app",
"version": "1.0.1",
"preferredTransport": "https",
"skills": [
{
"id": "list_benchmark_questions",
"description": "List benchmark questions."
},
{
"id": "submit_benchmark_run",
"description": "Submit answers for scoring."
},
{
"id": "get_leaderboard",
"description": "Fetch ranked benchmark runs."
}
],
"related": [
{
"name": "Ragmap",
"url": "https://ragmap-api.web.app",
"agent_card_url": "https://ragmap-api.web.app/.well-known/agent.json",
"description": "MCP search and RAG-focused server discovery."
},
{
"name": "Rootfetch",
"url": "https://rootfetch.com",
"agent_card_url": "https://rootfetch.com/.well-known/agent.json",
"description": "DNS delegation intelligence with MCP telemetry."
},
{
"name": "Agentability",
"url": "https://agentability.org",
"agent_card_url": "https://agentability.org/.well-known/agent.json",
"description": "Agent-readiness audit and evidence-backed report publishing."
},
{
"name": "RelayOrb",
"url": "https://relayorb.com",
"agent_card_url": "https://relayorb.com/.well-known/agent.json",
"description": "Tool control plane for AI agents with contract-first routing."
},
{
"name": "AIStatusDashboard",
"url": "https://aistatusdashboard.com",
"agent_card_url": "https://aistatusdashboard.com/.well-known/agent.json",
"description": "Real-time AI provider status monitoring with evidence-backed metrics."
}
]
}