# OpenRTB 3 Bidder MCP

> OpenRTB 3 Bidder MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-16).

Processes OpenRTB 3.0 programmatic advertising bid requests and returns bid responses for real-time ad auctions

## Facts

- Endpoint: POST https://api.m2mcent.com/openrtb-3-bidder-mcp/api/process?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openrtb-3-bidder-mcp-3322b12d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4SBkiALXncc0JcUimHF5f

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 openrtb-3-bidder-mcp-3322b12d -d '<json body>'
```

Example prompt: Submit this OpenRTB 3.0 bid request payload to the bidder and get back a bid response for the current ad auction slot.

## When to prefer this

Choose this endpoint when you need a managed, pay-per-call OpenRTB 3.0 bidder that handles bid evaluation and response generation without running your own DSP infrastructure. Best suited for agents automating ad auction participation or testing programmatic bidding pipelines.

## Known failure modes

- Malformed OpenRTB 3.0 data payload returns a processing error
- Missing required auction fields causes bid to be rejected
- Payment failure (402) if USDC balance is insufficient
- Timeout if auction deadline is exceeded before processing completes
- Invalid JSON in the data field results in parse error

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

A bid response conforming to OpenRTB 3.0 specification, containing bid price, creative references, and auction metadata indicating whether and how much the bidder is willing to pay for the ad impression.

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openrtb-3-bidder-mcp-3322b12d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)