# DDG Agent-Payable Transaction Proxy (Optimism)

> DDG Agent-Payable Transaction Proxy (Optimism) is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Submits an agent-payable HTTP transaction request on the Optimism chain via a micropayment-gated proxy endpoint

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/chains/optimism/tx?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-agent-payable-transaction-proxy-optimism-02cdd8e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pDfw6KU8TsdGWboNMTqrx

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 ddg-agent-payable-transaction-proxy-optimism-02cdd8e4 -d '<json body>'
```

Example prompt: Submit a POST request with a JSON body through the DDG agent-payable proxy on Optimism — the body should contain my transaction data and I'm happy to pay the $0.01 USDC per-call fee via x402.

## When to prefer this

Use this endpoint when your agent needs to make a pay-per-call HTTP request through a micropayment-gated proxy on the Optimism network, particularly when operating within the x402 payment protocol ecosystem. It is appropriate when you want programmatic, per-call billing at $0.01 USDC rather than subscription access, and when the target action involves submitting JSON, form-data, or text payloads via POST, PUT, or PATCH through an agent-payable intermediary.

## Known failure modes

- Payment not authorized or insufficient USDC balance — request rejected before proxying
- Invalid or missing required fields (input.type, input.method, input.bodyType, input.body, output.type, output.example) — schema validation error
- Unsupported HTTP method in input.method (only POST, PUT, PATCH allowed)
- Downstream service unavailable — proxy relays error from target
- Network issues on Optimism chain causing transaction failure

## How this service works

Machine-payable DDG services for AI agents. Current public live payment rails are x402 multi-chain USDC and direct-crypto auto/manual for public receiving-address families. MPP/Stripe/Tempo is installed but pending live provider env plus penny-settlement proof before any MPP-live advertisement. DDG sells bounded artifacts/results, not raw provider account access.

## Output

Returns a JSON object indicating whether the proxied transaction succeeded, with an 'ok: true' field on success and a defined output type field. Exact response shape is determined by the output schema provided in the request.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ddg-agent-payable-transaction-proxy-optimism-02cdd8e4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.daedalusdevelopmentgroup.com](https://www.zero.xyz/host/agents.daedalusdevelopmentgroup.com/llms.txt)