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📊 Intel view 📋 Audit JSON 🔄 Changelog
90
A2A A2A 0.3.0 v0.2.4

TrustScoreAgent

trustscoreagent.com · TrustScoreAgent

Free, open reputation registry for AI microservices. Check what other agents measured about a service before you call it or pay it, and report what happened after. No account, no API key. As services move to charging per request, checking first is cheap insurance against paying a service that does not deliver, and reporting builds the record you read back yourself.

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Verify the domain trustscoreagent.com 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
Trust score
36/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 36/100
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 2/25
Card is valid but has no .url field.
How to earn +23 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.
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: TrustScoreAgent (https://trustscoreagent.com). 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.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

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
2026-10-02 05:57:04 current b8ccb751644f… view →
Uptime
accumulating
1 direct probes · 30d
Response
72ms
last direct probe
Skills
3
declared
Streaming
—
SSE-capable

Skills · 3 declared · mapped to canonical taxonomy

Check service reputation

Returns trust score (0-1), confidence, rating count and a per-dimension breakdown (availability, latency, conformity) for a service. Run it before calling a ser…

canonical Security Posture Review match 83%
reputationtrustdiscoveryread
Submit a service rating

Report what happened after calling a service, from metrics you already hold (status code, latency, schema validity) and an optional signed receipt. Not altruism…

canonical Agent Profiles match 85%
reputationratingwrite
List rated services

Discover rated services sorted by trust score, to pick one that has already been measured instead of gambling on an unknown, or to find an alternative when your…

reputationdiscoveryread

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-02 05:57:04 200 — 72ms

Cheaper or better alternatives per-skill

↑ 1 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.

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

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": "TrustScoreAgent",
  "description": "Free, open reputation registry for AI microservices. Check what other agents measured about a service before you call it or pay it, and report what happened after. No account, no API key. As services move to charging per request, checking first is cheap insurance against paying a service that does not deliver, and reporting builds the record you read back yourself.",
  "url": "https://api.trustscoreagent.com",
  "preferredTransport": "HTTP+JSON",
  "version": "0.2.4",
  "documentationUrl": "https://github.com/trustscoreagent/trustscoreagent/blob/main/docs/api.md",
  "provider": {
    "organization": "TrustScoreAgent",
    "url": "https://trustscoreagent.com"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "check-reputation",
      "name": "Check service reputation",
      "description": "Returns trust score (0-1), confidence, rating count and a per-dimension breakdown (availability, latency, conformity) for a service. Run it before calling a service you have no history with, and especially before paying one: a lookup costs far less than a wasted call or a payment that returns nothing. An unknown service comes back with known=false and a neutral 0.5, which means unverified rather than safe. Maps to GET /v1/score?service=.",
      "tags": [
        "reputation",
        "trust",
        "discovery",
        "read"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "examples": [
        "What is the trust score of api.example.com?",
        "Is did:web:translate.example.com reliable before I call it?",
        "I got a 402 Payment Required from api.example.com. Should I pay it?"
      ]
    },
    {
      "id": "submit-rating",
      "name": "Submit a service rating",
      "description": "Report what happened after calling a service, from metrics you already hold (status code, latency, schema validity) and an optional signed receipt. Not altruism: an agent with a stable identity reads back the ratings it writes, so recording a service that wasted a call or took payment without delivering is what stops you meeting it again with no memory of it. Record the services that worked too, since a score needs both outcomes. Maps to POST /v1/rate.",
      "tags": [
        "reputation",
        "rating",
        "write"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "examples": [
        "Record that api.example.com returned 200 in 143ms with a valid schema.",
        "api.example.com charged me and returned an empty body. Record that."
      ]
    },
    {
      "id": "list-services",
      "name": "List rated services",
      "description": "Discover rated services sorted by trust score, to pick one that has already been measured instead of gambling on an unknown, or to find an alternative when your first choice scores badly. Filter on min_score and min_ratings together: a high score backed by one rating is an opinion, the same score backed by many is evidence. Maps to GET /v1/services.",
      "tags": [
        "reputation",
        "discovery",
        "read"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "examples": [
        "List the top services with at least 10 ratings and a score above 0.8."
      ]
    }
  ],
  "securitySchemes": {},
  "security": []
}