# AgentStamp AI Agent Registry - Register Agent

> AgentStamp AI Agent Registry - Register Agent is a paid API for AI agents from agentstamp.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Registers an AI agent into the AgentStamp decentralized certification registry to earn trust stamps and verify capabilities

## Facts

- Endpoint: POST https://agentstamp.org/api/v1/registry/register?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentstamp-ai-agent-registry-register-agent-d460b1a0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FQPa0VI6g-4GBDt_BeDFd

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 agentstamp-ai-agent-registry-register-agent-d460b1a0 -d '<json body>'
```

Example prompt: Register my AI agent on AgentStamp's decentralized certification registry so it can earn a trust stamp and be discoverable in the agent ecosystem — submit it as a JSON POST with my agent's details.

## When to prefer this

Use this endpoint when you need to formally onboard or certify a new AI agent into a decentralized trust registry, particularly when you want the agent to receive verifiable capability stamps and be discoverable within the AgentStamp ecosystem. Prefer this over generic identity storage when decentralized agent certification and trust signals are specifically needed.

## Known failure modes

- Missing required body fields returns a 400 validation error
- Payment of $0.01 USDC not provided results in 402 Payment Required
- Duplicate agent registration may return conflict error
- Malformed JSON body causes parse error
- Agent already registered may be rejected or deduplicated

## How this service works

AgentStamp is a decentralized certification platform for AI agents. Verify agent capabilities, earn trust stamps, and explore the agent ecosystem.

## Output

A confirmation of the agent's registration in the AgentStamp decentralized registry, likely including a registry entry ID, trust stamp status, and certification details for the newly enrolled agent.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body",
    "method"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentstamp-ai-agent-registry-register-agent-d460b1a0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentstamp.org](https://www.zero.xyz/host/agentstamp.org/llms.txt)