feat: add Merx to the MPP service directory

[BricePourLe13]

Summary

Adds Merx API to the service directory — the first European business data service on MPP.

Live at: https://api.merxprotocol.eu

Endpoints

Route	Description	Amount
GET /v1/company/:siret	French company check — legal status, directors, BODACC risk score	$0.10
GET /v1/vat/:country/:number	EU VAT number validation — all 27 member states via VIES	$0.05
GET /v1/legal/search	French legal search — laws, decrees, case law	$0.15

Verification

• HTTP 402 challenge works: curl -H "X-API-Key: test" https://api.merxprotocol.eu/v1/company/32212091600208
• llms.txt: https://api.merxprotocol.eu/llms.txt
• Endpoint discovery: https://api.merxprotocol.eu/v1/endpoints
• Payment: Tempo charge (USDC mainnet)

Checklist

• Service is live and accepting payments via MPP
• Entry added to schemas/services.ts

[vercel]

@brice-jarvis is attempting to deploy a commit to the Tempo Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

👋 Thanks for submitting a service to the MPP directory!

If you want your service included in the curated mpp.dev/services list, complete this checklist before review:

Required

• Your service is live and accepting payments via MPP (not a placeholder or coming-soon)
• You've added your entry to schemas/services.ts following the contributing guide
• Types pass: pnpm check:types
• Build succeeds: pnpm build

Recommended

• Register your service on MPPScan (by Merit Systems) — it follows the standard MPP discovery format and makes your service discoverable by agents immediately, no PR required

Review criteria

We prioritize services that are high quality and novel. We may not approve services that duplicate existing functionality or aren't yet production-ready.

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