# Mercer x402 (hub probe)

Settlement canary: returns a timestamped pong JSON after USDC micropayment.

- Status: Listed — not yet verified
- Category: [Infrastructure & Facilitators](https://x402looker.com/category/infrastructure-facilitators/)
- Website: https://x402.lucidcove.org

## What it does

Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.

Audience: ai-agents, developers. Tags: facilitator, settlement.

## Pricing

- Pricing model: per-request
- Price hint: $0.001/request
- Accepted tokens: USDC
- Chain: base
- Facilitator: coinbase-cdp

## How agents pay

1. The agent sends a plain request and receives an HTTP 402 response describing the price and payment requirements.
2. The agent signs a payment payload for the exact amount on base and attaches it to a retried request.
3. The facilitator verifies and settles the payment, then the service returns the paid response.

## Related services

- [CodeNut Payment Solution](https://x402looker.com/service/codenut-payment-solution/) — CodeNut Payment Solution.
- [MERX - TRON Payment Infrastructure for AI Agents](https://x402looker.com/service/merx-tron-payment-infrastructure-for-ai-agents/) — TRON payment infrastructure for AI agents.
- [Meme Generator](https://x402looker.com/service/meme-generator/) — Generate a captioned meme image.

## Facet hubs

- Chain hub: [Base services](https://x402looker.com/chain/base/)
- Facilitator profile: [Coinbase Cdp](https://x402looker.com/facilitator/coinbase-cdp/)
- Price band: [Micro ($0.01 or less per request)](https://x402looker.com/price-band/micro/)

## Similar services in Infrastructure & Facilitators

- [AgentWire](https://x402looker.com/service/agentwire/) — AgentWire service card for webhook inbox relay and web fetch infrastructure.
- [BlackSwan](https://x402looker.com/service/blackswan/) — Real-time risk intelligence infrastructure for autonomous AI agents.
- [BlockRun — The routing & payment layer for AI](https://x402looker.com/service/blockrun-the-routing-payment-layer-for-ai/) — 14M+ on-chain transactions.
- [BotPay — AI Agent Payment Network and x402 Infrastructure](https://x402looker.com/service/botpay-ai-agent-payment-network-and-x402-infrastructure/) — BotPay provides payment access, API discovery, automated service delivery, and settlement infrastructure for AI agents, applications.
- [CodeNut Payment Solution](https://x402looker.com/service/codenut-payment-solution/) — CodeNut Payment Solution.
- [MERX - TRON Payment Infrastructure for AI Agents](https://x402looker.com/service/merx-tron-payment-infrastructure-for-ai-agents/) — TRON payment infrastructure for AI agents.

Last updated: 2026-09-23
Last checked: 2026-09-28 — lapsed (unreachable at the last two weekly checks). Weekly automated check, not continuous monitoring.