X402-BROKER Preflight Certify

x402

X402-BROKER Preflight Certify is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Validates and certifies an HTTP endpoint's preflight parameters before routing it through the X402-BROKER MCP/x402/A2A gateway network, returning a compressed certification payload with ROI proof.

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.

Output

Returns a JSON object with a 'status' field (e.g. 'ok'), a 'data' object containing certification details, and an 'roi_proof' object that includes a compression_ratio_pct metric indicating how efficiently the endpoint can be routed through the gateway.

Example use cases

Pre-validate MCP server before payment

“Before I send any USDC, run a preflight certification on https://my-mcp-server.example.com/tool using GET method to confirm it's valid and routable through the x402 gateway.”

Check compression ratio for agent pipeline

“Certify the endpoint at https://api.myservice.dev/query via GET through the x402 broker preflight so I can see what compression ratio and ROI proof I'd get before wiring up my agent workflow.”

Verify POST endpoint eligibility for A2A routing

“I want to route https://api.partner.io/execute as a POST through your A2A broker — can you run the preflight certify check on it first so I know it'll work before committing?”

Technical details

Endpoint

GEThttps://mcp-gateway.agentdiet.dev/v1/preflight/certify?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to validate and certify an HTTP endpoint before committing to routing it through the X402-BROKER gateway, especially when you want ROI and compression metrics upfront. Prefer this over direct execution when pre-checking eligibility for x402/MCP/A2A payment-gated workflows or when auditing whether a new API is suitable for agent-to-agent routing with USDC settlement on Base.

Side effects

Missing required 'type' or 'method' fields returns validation error
Invalid or unreachable target URL may result in failed preflight
Unsupported HTTP method (not GET or POST) rejected by schema
Malformed input object structure returns schema validation error
Network timeout if target endpoint is slow to respond

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

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

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