# AgentGate Concordium Agent Registry Check

> AgentGate Concordium Agent Registry Check is a paid API for AI agents from agentgate.agentgate.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).

Checks whether an AI agent is registered, active, and verified in the Concordium Agent Registry (CIS-8004) by badge or account address.

## Facts

- Endpoint: GET https://agentgate.agentgate.workers.dev/v1/check-agent?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentgate-concordium-agent-registry-check-5704f16f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7yalh4ySILY5_SsFu1zJA

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentgate-concordium-agent-registry-check-5704f16f
```

Example prompt: Can you check if the agent with badge address Mf22soLh1NuZYFgBK8iSs is registered, active, and verified in the Concordium Agent Registry on mainnet?

## When to prefer this

Use this endpoint when you need to confirm the legitimacy and status of an AI agent in the Concordium CIS-8004 registry before initiating interactions, payments, or delegating tasks to it. It is the canonical trust check for Concordium-based agent ecosystems and should be preferred over generic blockchain lookups when the agent uses CIS-2 badge tokens or Concordium account addresses as identifiers.

## Known failure modes

- Badge or account address not found in registry (found: false)
- Invalid or malformed badge/address format causes 400 error
- Network parameter value not recognized
- Agent found but not active (active: false) — agent is registered but inactive
- Agent found but not verified (verified: false) — registration incomplete
- cardHashMatches: false — agent card has been tampered with or is out of sync
- Concordium network node unavailable causing upstream timeout

## How this service works

Check whether an AI agent is registered, Active and Verified in the Concordium Agent Registry (CIS-8004).

## Output

Returns a JSON object indicating whether the queried badge or account was found in the Concordium Agent Registry, along with: found (bool), active (bool), verified (bool), owner address, agent URI (well-known agent card URL), token ID, token address, whether the agent card hash matches on-chain data, the network queried, and any issues detected. Also indicates if the result is mocked.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Badge (CIS-2 token address, short or CAIP-19 form) or Concordium account address"
      },
      "network": {
       "enum": [
        "mainnet",
        "testnet",
        "devnet"
       ],
       "type": "string",
       "description": "Concordium network, default mainnet"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "Mf22soLh1NuZYFgBK8iSs",
  "kind": "badge",
  "mock": false,
  "found": true,
  "owner": "4DDvjwdcLmTy1Ar9FCKKPMiABrS261TvyXJGr4n4ypuuogXeFF",
  "active": true,
  "issues": [],
  "source": "concordium-badge-check",
  "network": "mainnet",
  "tokenId": 484,
  "agentUri": "https://tippingservice.co.uk/agents/vigilonmoltbook/.well-known/agent-card.json",
  "verified": true,
  "agentWallet": null,
  "tokenAddress": "Mf22soLh1NuZYFgBK8iSs",
  "cardHashMatches": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentgate-concordium-agent-registry-check-5704f16f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentgate.agentgate.workers.dev](https://www.zero.xyz/host/agentgate.agentgate.workers.dev/llms.txt)