# minia2a x402 Chain Registry

> minia2a x402 Chain Registry is a paid API for AI agents from minia2a.uk, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns a registry of blockchain chains supported by the x402 payment protocol

## Facts

- Endpoint: GET https://minia2a.uk/x402/chain-registry
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/minia2a-x402-chain-registry-ad54ff93
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T9Hu24brx3pdozrjQnHIm

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 minia2a-x402-chain-registry-ad54ff93
```

Example prompt: Can you fetch the x402 chain registry so I can see which blockchain networks are supported by the x402 payment protocol?

## When to prefer this

Use this endpoint when you need to programmatically discover which blockchain networks are supported by the x402 protocol, especially when building or validating x402-based payment integrations. Prefer this over manual documentation lookup when an agent needs up-to-date chain support data at runtime.

## Known failure modes

- Invalid query parameters return an error or empty response
- Service unavailable returns a non-200 HTTP status
- Payment not processed (x402 protocol payment failure) results in access denial
- Malformed input schema causes a 400-level error

## How this service works

minia2a service: x402-chain-registry

## Output

A structured list or registry of blockchain chains supported by the x402 payment protocol, including chain identifiers, network metadata, and configuration details relevant to x402 micropayment transactions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "method": {
     "type": "string"
    },
    "bodyType": {
     "type": "string"
    },
    "queryParams": {
     "type": "object"
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/minia2a-x402-chain-registry-ad54ff93/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from minia2a.uk](https://www.zero.xyz/host/minia2a.uk/llms.txt)