# Canada Climate Observations

> Official Environment Canada climate station observations near any postal code — daily temperatures, precipitation and multi-station compares for your AI agent.

Remote MCP server (Streamable HTTP): https://ca-climate-normals-mcp.donniertf.workers.dev/mcp
Free tier: `nearest_station` — no key, no sign-up, 20 calls/day per IP.
Pro: C$12/month, cancel anytime — all tools, unlimited.

## Tools
- nearest_station (free): FREE. Nearest Environment Canada climate station to a Canadian postal code, with the last 3 daily observations (max/min/precip).
- daily_history (Pro): PRO. Up to 90 days of daily max/min/mean temperature and precipitation for a climate station id.
- compare_stations (Pro): PRO. Last 7 days of observations for up to 5 climate stations (pass station ids from nearest_station).

## Buying (agents)
1. POST https://ca-climate-normals-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-climate-normals-mcp.donniertf.workers.dev/token?session_id=... -> {access_token}.
3. Send Authorization: Bearer <access_token> to https://ca-climate-normals-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-climate-normals-mcp.donniertf.workers.dev/x402/<tool> -> HTTP 402 with payment requirements ($0.03 USDC per call, payTo 0x02226D28e0c85AE4AdDB7fe7043Dd2b1Ff710D41). Retry with an X-PAYMENT header (x402 v1, scheme exact, network base). Manifest: https://ca-climate-normals-mcp.donniertf.workers.dev/.well-known/x402. MCP clients may also send X-PAYMENT on tools/call.
Machine-readable pricing: https://ca-climate-normals-mcp.donniertf.workers.dev/pricing.json · Server card: https://ca-climate-normals-mcp.donniertf.workers.dev/.well-known/mcp

## Sources
- Environment and Climate Change Canada climate stations & daily data via MSC GeoMet OGC API (Open Government Licence – Canada)
- Zippopotam.us postal area geocoding

## Notes
Daily climate observations from Environment and Climate Change Canada climate stations (MSC GeoMet API). Station data may lag; treat recent days as provisional.
Contact: dmorrisonwebdesign@gmail.com. More UK data MCPs: https://github.com/donniertf-hub/uk-mcp-fleet