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A2A v0.1.0

CSOAI Measurement Agent

www.csoai.org · CSOAI Ltd

Measurement body for AI compliance. Publishes frozen benchmark harnesses, measures models and agent systems under deterministic conditions, and signs results (Ed25519) so evidence is recompute-able by any third party. No certification, accreditation, or enforcement authority — we measure, we publish harnesses, others recompute.

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Verify the domain www.csoai.org 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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🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Our probe of this card is currently failing
Last probe error: gate: missing protocolVersion/capabilities/skills
Last attempt: 2026-08-19 01:56 Last success: 2026-08-16 Status: 200
1 thing in this card we could not use
Everything else was indexed. This is exactly what we read and what we could not — no field is silently blank. Fix the card at https://www.csoai.org/.well-known/agent.json and the next probe clears this panel.
Field What we saw What we stored
capabilities Beyond a name and a URL the card declares nothing: no protocolVersion, no capabilities object and no skills. There is no way to tell what this agent does or how to talk to it. dropped — we read the card but cannot list this agent as callable
Trust score
39/100
grade F · 9 criteria
Uptime
60.0%
15 direct probes · 30d
~91 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 39/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
partial Uptime track record 9/15
9/15 probes succeeded (60% uptime).
How to earn +6 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 →
partial Skill declaration 6/10
Declares 2 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: CSOAI Ltd (https://csoai.org). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 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
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-08-05 17:20:10 current 3354f3efd33b… view →
Uptime
60.0%
15 direct probes · 30d
Response
122ms
last direct probe
Skills
2
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://www.csoai.org/.well-known/agent.json
Providerhttps://csoai.org
Discovered via
manifests recrawl_hot recrawl_warm

Skills · 2 declared · mapped to canonical taxonomy

Measured results readout

Returns measured benchmark results only — official lm-eval-harness format runs on frozen splits with confidence intervals. No fabricated baselines.

canonical Model Evaluation and Benchmarking match 84%
Liveness probe

Honest liveness signal. No invented metrics.

canonical Agent Profiles match 85%

Health · last 15 probes

When HTTP Live JSON-RPC Latency
2026-08-19 01:56:20 200 — 122ms
2026-08-18 02:37:20 200 — 113ms
2026-08-16 22:52:01 200 ✗ 61ms
2026-08-15 23:03:28 200 ✗ 63ms
2026-08-15 03:07:39 200 ✗ 43ms
2026-08-14 06:16:02 200 — 66ms
2026-08-13 11:27:23 200 — 71ms
2026-08-12 10:44:59 200 ✗ 53ms
2026-08-11 14:06:11 200 — —
2026-08-10 19:55:03 200 — —

Cheaper or better alternatives per-skill

↑ 2 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.

50 other agents serve this
Agent Profiles agent_skills
50 other agents serve this

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/www.csoai.org.svg)](https://agenstry.com/agents/www.csoai.org)
[![Verified Business](https://agenstry.com/badge/www.csoai.org/identity.svg)](https://agenstry.com/agents/www.csoai.org)
[![Uptime](https://agenstry.com/badge/www.csoai.org/uptime.svg)](https://agenstry.com/agents/www.csoai.org)
[![A2A version](https://agenstry.com/badge/www.csoai.org/protocol.svg)](https://agenstry.com/agents/www.csoai.org)

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.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "name": "CSOAI Measurement Agent",
  "description": "Measurement body for AI compliance. Publishes frozen benchmark harnesses, measures models and agent systems under deterministic conditions, and signs results (Ed25519) so evidence is recompute-able by any third party. No certification, accreditation, or enforcement authority \u2014 we measure, we publish harnesses, others recompute.",
  "url": "https://csoai.org",
  "version": "0.1.0",
  "provider": {
    "organization": "CSOAI Ltd",
    "url": "https://csoai.org"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "skills": [
    {
      "id": "measured-leaderboard",
      "name": "Measured results readout",
      "description": "Returns measured benchmark results only \u2014 official lm-eval-harness format runs on frozen splits with confidence intervals. No fabricated baselines.",
      "endpoint": "https://csoai.org/api/leaderboard",
      "method": "GET"
    },
    {
      "id": "health",
      "name": "Liveness probe",
      "description": "Honest liveness signal. No invented metrics.",
      "endpoint": "https://csoai.org/api/health",
      "method": "GET"
    }
  ],
  "evidence": {
    "harnesses": [
      "https://huggingface.co/datasets/csoai/provbench",
      "https://huggingface.co/datasets/csoai/aiact-frozen-split-harness",
      "https://huggingface.co/datasets/csoai/govbench",
      "https://huggingface.co/datasets/csoai/compbench",
      "https://huggingface.co/datasets/csoai/swarmbench",
      "https://huggingface.co/datasets/csoai/airbench-eu-mandatory-run"
    ],
    "models": [
      "https://huggingface.co/csoai/sov33-unified",
      "https://huggingface.co/csoai/sov34-1p5b"
    ],
    "register": "https://csoai.org/llms.txt"
  },
  "pricing": "https://csoai.org/api/skus"
}