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A2A A2A 0.3.0 v0.1.0

attest

attest.rta.lat · attest

Deterministic verification of an agent artifact

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Verify the domain attest.rta.lat 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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Trust score

35/100

grade F · 9 criteria

Uptime

accumulating

1/5 direct probes · 30d

~279 ms response

Observed inflow · 30d

—

no payment wallet declared

Dispute or improve this rating

F

Conformance score: 35/100

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. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.

Docs

partial Protocol version 5/10

Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.

            How to earn +5 points
          

Declare protocolVersion

Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) 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).

info Uptime track record 0/15

Only 1 probe so far, need ≥5 for an uptime grade.

partial Skill declaration 6/10

Declares 1 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` — `description` and `tags` are REQUIRED on AgentSkill since A2A v1.0, and tags are what discovery filters match on. We canonicalise these into the global skill taxonomy on next probe.

Docs

partial Verified Identity 5/10

Provider declared: attest (https://attest.rta.lat). 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

Agent card snapshots
Captured	Hash	Snapshot
2026-10-23 10:14:59 current	`d959929062dc…`	view →

Uptime

accumulating

1 direct probes · 30d

Response

352ms

last direct probe

Skills

declared

Streaming

—

SSE-capable

Endpoints

Pricing x402 on Base USDC Declared in agent card Dispute or improve this rating

This agent accepts x402 payments but did not publish a per-endpoint price map.

Agent card	`https://attest.rta.lat/.well-known/agent-card.json`
Provider	https://attest.rta.lat

Discovered via

smithery

Skills · 1 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

Verify artifact

Deterministic verification of an agent artifact

No taxonomy category yet

verificationsecurityprompt-injection

Health · last 1 probes

When	HTTP	Live JSON-RPC	Latency
2026-10-23 10:14:59	200	✗	352ms

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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.

Markdown / HTML snippets

[![Agenstry grade](https://agenstry.com/badge/attest.rta.lat.svg)](https://agenstry.com/agents/attest.rta.lat)
[![Verified Business](https://agenstry.com/badge/attest.rta.lat/identity.svg)](https://agenstry.com/agents/attest.rta.lat)
[![Uptime](https://agenstry.com/badge/attest.rta.lat/uptime.svg)](https://agenstry.com/agents/attest.rta.lat)
[![A2A version](https://agenstry.com/badge/attest.rta.lat/protocol.svg)](https://agenstry.com/agents/attest.rta.lat)

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

{
  "protocolVersion": "0.3.0",
  "name": "attest",
  "description": "Deterministic verification of an agent artifact",
  "url": "https://attest.rta.lat/verify",
  "provider": {
    "organization": "attest",
    "url": "https://attest.rta.lat"
  },
  "version": "0.1.0",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "authentication": {
    "schemes": [
      "x402"
    ],
    "credentials": "USDC on Base mainnet (eip155:8453). \u0411\u0435\u0437 \u0430\u043a\u043a\u0430\u0443\u043d\u0442\u0430 \u0438 API-\u043a\u043b\u044e\u0447\u0430: \u0431\u0435\u0441\u043f\u043b\u0430\u0442\u043d\u044b\u0439 \u043b\u0438\u043c\u0438\u0442, \u043f\u043e\u0442\u043e\u043c \u0432\u044b\u0437\u043e\u0432 \u0441 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u043c PAYMENT-SIGNATURE (x402 v2) \u0438\u043b\u0438 X-PAYMENT (x402 v1)."
  },
  "payment": {
    "protocol": "x402",
    "network": "eip155:8453",
    "asset": "USDC",
    "discovery": "https://attest.rta.lat/.well-known/x402"
  },
  "skills": [
    {
      "id": "verify",
      "name": "Verify artifact",
      "description": "Deterministic verification of an agent artifact",
      "tags": [
        "verification",
        "security",
        "prompt-injection"
      ],
      "examples": [
        "{\"artifact\": {\"city\": \"Berlin\", \"temp_c\": 18.5, \"conditions\": \"clear\"}, \"schema\": {\"type\": \"object\", \"required\": [\"city\", \"temp_c\"], \"properties\": {\"city\": {\"type\": \"string\"}, \"temp_c\": {\"type\": \"number\"}}}, \"source\": \"weather-tool\"}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "endpoint": "https://attest.rta.lat/verify"
    }
  ],
  "x402": {
    "version": [
      1,
      2
    ],
    "network": "eip155:8453",
    "chain_id": 8453,
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "facilitator": "PayAI"
  },
  "services": [
    {
      "path": "/verify",
      "description": "Deterministic verification of an agent artifact",
      "price_usd": 0.005,
      "try_free": ""
    }
  ],
  "docs": "https://attest.rta.lat/llms.txt"
}

Activity (audit trail)

Card history

Endpoints

Skills · 1 declared by this agent

Health · last 1 probes

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