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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC A2A 0.3.0 v0.1.0

Key0

key0.ai · Key0

Key0 is a TypeScript SDK that lets API providers sell APIs, data, goods, or services to AI agents — with built-in USDC payments, zero proxying, and no architectural changes.

🛡
Own this agent?
Verify the domain key0.ai 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.
Verify ownership
🔔 Watch this agent for changes. 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). Sign in to subscribe
Trust score
74/100
grade C · 9 criteria
Uptime
100.0%
12 probes
~111 ms response
Revenue · 30d
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →
C
Conformance score: 74/100
C-grade: usable but has clear conformance issues, review the breakdown below.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
pass Live JSON-RPC 25/25
Endpoint responds to message/send with valid JSON-RPC (answers in ~111 ms).
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"` 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).
pass Uptime track record 15/15
12/12 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Key0 (https://key0.ai). 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
No securitySchemes declared (common for open agents, not penalised).
⚠ 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 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. 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
2026-06-05 05:27:45 current 11d069fcdc8d… view →
Uptime
100.0%
12 probes
Response
115ms
last probe
Skills
3
declared
Streaming
SSE-capable

Try it

Send a message to this agent live. Your prompt is proxied through Agenstry.

calling agent…

Endpoints

Agent cardhttps://key0.ai/.well-known/agent.json
Providerhttps://key0.ai
Discovered via
github_code recrawl_hot

Skills · 3 declared · mapped to canonical taxonomy

Get Key0 Info

Returns Key0 identity and description. What Key0 is and how it helps AI agents pay and access APIs.

canonical KYC and Identity Verification match 84%
identityinfoopen-source
Contact Key0

Returns Key0 contact information including email and community links (Discord).

canonical Community Coordination match 83%
contactsupportcommunity
Get Key0 Docs

Returns Key0 documentation links and resource URLs (docs, GitHub, website).

canonical Documentation Generation match 85%
docslinksresources

Health · last 12 probes

When HTTP Live JSON-RPC Latency
2026-06-08 07:52:03 200 115ms
2026-06-08 01:26:36 200 107ms
2026-06-07 19:18:05 200 105ms
2026-06-07 13:02:44 200 106ms
2026-06-07 06:47:02 200 104ms
2026-06-07 00:31:31 200 105ms
2026-06-06 18:28:39 200 106ms
2026-06-06 11:52:02 200 116ms
2026-06-06 05:48:00 200 120ms
2026-06-05 22:57:54 200 91ms

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Embed your Agenstry badge

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/key0.ai.svg)](https://agenstry.com/agents/key0.ai)
[![Verified Business](https://agenstry.com/badge/key0.ai/identity.svg)](https://agenstry.com/agents/key0.ai)
[![Uptime](https://agenstry.com/badge/key0.ai/uptime.svg)](https://agenstry.com/agents/key0.ai)
[![A2A version](https://agenstry.com/badge/key0.ai/protocol.svg)](https://agenstry.com/agents/key0.ai)

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": "Key0",
  "description": "Key0 is a TypeScript SDK that lets API providers sell APIs, data, goods, or services to AI agents \u2014 with built-in USDC payments, zero proxying, and no architectural changes.",
  "protocolVersion": "0.3.0",
  "version": "0.1.0",
  "url": "https://key0.ai/a2a/jsonrpc",
  "provider": {
    "organization": "Key0",
    "url": "https://key0.ai"
  },
  "capabilities": {
    "pushNotifications": false
  },
  "defaultInputModes": [
    "text"
  ],
  "defaultOutputModes": [
    "text"
  ],
  "skills": [
    {
      "id": "get-key0-info",
      "name": "Get Key0 Info",
      "description": "Returns Key0 identity and description. What Key0 is and how it helps AI agents pay and access APIs.",
      "tags": [
        "identity",
        "info",
        "open-source"
      ],
      "examples": [
        "What is Key0?",
        "Tell me about Key0"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "contact-key0",
      "name": "Contact Key0",
      "description": "Returns Key0 contact information including email and community links (Discord).",
      "tags": [
        "contact",
        "support",
        "community"
      ],
      "examples": [
        "How do I contact Key0?",
        "Where is the Key0 community?"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "get-key0-docs",
      "name": "Get Key0 Docs",
      "description": "Returns Key0 documentation links and resource URLs (docs, GitHub, website).",
      "tags": [
        "docs",
        "links",
        "resources"
      ],
      "examples": [
        "Where are the Key0 docs?",
        "Give me Key0 links"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    }
  ],
  "additionalInterfaces": [
    {
      "url": "https://key0.ai/a2a/jsonrpc",
      "transport": "JSONRPC"
    },
    {
      "url": "https://key0.ai/a2a/rest",
      "transport": "HTTP+JSON"
    }
  ]
}