# IMPERIUM PREFLIGHT — x402, ERC-8004 & IETF MPP Readiness Auditor

> IMPERIUM PREFLIGHT — x402, ERC-8004 & IETF MPP Readiness Auditor is a paid API for AI agents from preflight.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Runs an automated 8-gate pre-flight compliance check on a contract or service address against x402 v2, ERC-8004 identity, IETF MPP, MCP Streamable HTTP, A2A v0.3.0, OASF, and Dexter gas floor standards.

## Facts

- Endpoint: GET https://preflight.agentdiet.dev/v1/solidity-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/imperium-preflight-x402-erc-8004-ietf-mpp-readiness-auditor-5e9e0738
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dPUtnyqf8sKT-HPj4n_Ix

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 imperium-preflight-x402-erc-8004-ietf-mpp-readiness-auditor-5e9e0738
```

Example prompt: Can you run an IMPERIUM PREFLIGHT audit on Ethereum address 0xAbC123... and tell me whether it passes all 8 gates for x402 v2, ERC-8004 identity, and IETF MPP compliance?

## When to prefer this

Choose this endpoint when you need a single-call, multi-standard compliance sweep across x402 v2, ERC-8004, IETF MPP, MCP Streamable HTTP, A2A v0.3.0, OASF, and Dexter gas floor — especially before deploying or integrating an agent payment service. Prefer this over manual per-standard checks when you want a consolidated 8-gate pass/fail report with ROI proof in one low-cost ($0.01 USDC) call.

## Known failure modes

- Invalid or malformed Ethereum address returns an error or empty data
- Address with no on-chain activity may produce incomplete gate results
- Network timeout or upstream unavailability may return a non-200 status
- Missing required 'input' or 'method' fields in the request yields a validation error
- Unsupported method type returns a schema mismatch error

## How this service works

Automated 8-gate pre-flight readiness auditor for x402 v2, Dexter gas floor, IETF MPP, MCP Streamable HTTP, A2A v0.3.0 agent cards, OASF records, and ERC-8004 identity.

## Output

A JSON object containing a status field ('ok' or failure), a data object with per-gate audit results, and an roi_proof object including a compression_ratio_pct metric (e.g. 91.4%). The response details which of the 8 compliance gates passed or failed across x402 v2, ERC-8004, IETF MPP, MCP Streamable HTTP, A2A v0.3.0, OASF, and Dexter gas floor standards.

## 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",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "address": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/imperium-preflight-x402-erc-8004-ietf-mpp-readiness-auditor-5e9e0738/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)