# Canada Postal Code Lookup

> Resolve Canadian postal codes to city, province and coordinates — batch lookups and distances for your AI agent.

Remote MCP server (Streamable HTTP): https://ca-postal-lookup-mcp.donniertf.workers.dev/mcp
Free tier: `postal_lookup` — no key, no sign-up, 20 calls/day per IP.
Pro: C$9/month, cancel anytime — all tools, unlimited.

## Tools
- postal_lookup (free): FREE. Resolve a Canadian postal code (or FSA) to city/province and approximate lat/lon.
- batch_postal (Pro): PRO. Resolve up to 100 Canadian postal codes / FSAs at once.
- distance (Pro): PRO. Approximate great-circle distance (km) between two Canadian postal areas.

## Buying (agents)
1. POST https://ca-postal-lookup-mcp.donniertf.workers.dev/checkout -> {checkout_url, session_id}. A human (or a payment-capable agent) completes Stripe Checkout at checkout_url.
2. GET https://ca-postal-lookup-mcp.donniertf.workers.dev/token?session_id=... -> {access_token}.
3. Send Authorization: Bearer <access_token> to https://ca-postal-lookup-mcp.donniertf.workers.dev/mcp (or pass access_token in tool arguments).

## Pay per call (x402, USDC on Base)
No account: POST JSON args to https://ca-postal-lookup-mcp.donniertf.workers.dev/x402/<tool> -> HTTP 402 with payment requirements ($0.02 USDC per call, payTo 0x02226D28e0c85AE4AdDB7fe7043Dd2b1Ff710D41). Retry with an X-PAYMENT header (x402 v1, scheme exact, network base). Manifest: https://ca-postal-lookup-mcp.donniertf.workers.dev/.well-known/x402. MCP clients may also send X-PAYMENT on tools/call.
Machine-readable pricing: https://ca-postal-lookup-mcp.donniertf.workers.dev/pricing.json · Server card: https://ca-postal-lookup-mcp.donniertf.workers.dev/.well-known/mcp

## Sources
- Zippopotam.us Canadian FSA geocoding (public)

## Notes
Forward sortation area (FSA) geocoding via Zippopotam.us. Approximate centroids for the first 3 characters of a Canadian postal code — not a door-level address lookup.
Contact: dmorrisonwebdesign@gmail.com. More UK data MCPs: https://github.com/donniertf-hub/uk-mcp-fleet