A2A live JSON-RPC A2A 0.3.0 v1.5.0

Agent Data Hub

api.agentdatahub.de · Agent Data Hub

No-key live data and deterministic tools for AI agents: FX, macro, weather, geo, research, developer tools, space; task bundles and a recorded history archive.

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Verify the domain api.agentdatahub.de 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

59/100

grade D · 9 criteria

Uptime

accumulating

1/5 direct probes · 30d

~80 ms response

Observed inflow · 30d

—

no payment wallet declared

Dispute or improve this rating

D

Conformance score: 59/100

D-grade: significant issues, auth-gated, partially broken, or stale.

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).

pass Live JSON-RPC 25/25

Endpoint responds to a negotiated A2A SendMessage probe (answers in ~80 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"` (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: Agent Data Hub (https://api.agentdatahub.de). 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
2026-10-31 07:57:08 current	`af23cdf55ad3…`	view →

Uptime

accumulating

1 direct probes · 30d

Response

139ms

last direct probe

Skills

declared

Streaming

—

SSE-capable

Try it

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

Endpoints

Agent card	`https://api.agentdatahub.de/.well-known/agent-card.json`
Provider	https://api.agentdatahub.de
Docs	https://api.agentdatahub.de/llms.txt

Discovered via

manifests

Skills · 3 declared by this agent

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

Answer a data question

Natural-language question to live data (GET /api/v1/ask?q=...&compact=1).

canonical Thread Message Retrieval match 89%

datasearch

Task bundles

Location, country and npm briefs in one call.

canonical Thread Message Retrieval match 88%

traveleconomydeveloper

Time series

Recorded change points of openly licensed sources as CSV.

canonical Thread Message Retrieval match 89%

historytimeseries

Health · last 1 probes

When	HTTP	Live JSON-RPC	Latency
2026-10-31 07:57:08	200	✓	139ms

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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/api.agentdatahub.de.svg)](https://agenstry.com/agents/api.agentdatahub.de)
[![Verified Business](https://agenstry.com/badge/api.agentdatahub.de/identity.svg)](https://agenstry.com/agents/api.agentdatahub.de)
[![Uptime](https://agenstry.com/badge/api.agentdatahub.de/uptime.svg)](https://agenstry.com/agents/api.agentdatahub.de)
[![A2A version](https://agenstry.com/badge/api.agentdatahub.de/protocol.svg)](https://agenstry.com/agents/api.agentdatahub.de)

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": "Agent Data Hub",
  "description": "No-key live data and deterministic tools for AI agents: FX, macro, weather, geo, research, developer tools, space; task bundles and a recorded history archive.",
  "url": "https://api.agentdatahub.de/mcp",
  "preferredTransport": "JSONRPC",
  "additionalInterfaces": [
    {
      "url": "https://api.agentdatahub.de/mcp",
      "transport": "MCP (Streamable HTTP)"
    },
    {
      "url": "https://api.agentdatahub.de/openapi.json",
      "transport": "OpenAPI 3.1 REST"
    }
  ],
  "provider": {
    "organization": "Agent Data Hub",
    "url": "https://api.agentdatahub.de"
  },
  "version": "1.5.0",
  "documentationUrl": "https://api.agentdatahub.de/llms.txt",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "securitySchemes": {},
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/markdown",
    "text/csv"
  ],
  "skills": [
    {
      "id": "ask",
      "name": "Answer a data question",
      "description": "Natural-language question to live data (GET /api/v1/ask?q=...&compact=1).",
      "tags": [
        "data",
        "search"
      ]
    },
    {
      "id": "bundles",
      "name": "Task bundles",
      "description": "Location, country and npm briefs in one call.",
      "tags": [
        "travel",
        "economy",
        "developer"
      ]
    },
    {
      "id": "history",
      "name": "Time series",
      "description": "Recorded change points of openly licensed sources as CSV.",
      "tags": [
        "history",
        "timeseries"
      ]
    }
  ]
}