# CanadaBuys Federal Tenders

> Open Government of Canada tenders from CanadaBuys — keyword and region search, closing-soon and daily new-notice feeds for your AI agent.

Remote MCP server (Streamable HTTP): https://ca-tenders-mcp.donniertf.workers.dev/mcp
Free tier: `tender_search` — no key, no sign-up, 20 calls/day per IP.
Pro: C$15/month, cancel anytime — all tools, unlimited.

## Tools
- tender_search (free): FREE. Open federal tenders on CanadaBuys matching a keyword — top 3 by newest publication date.
- tender_search_full (Pro): PRO. Up to 100 open tenders with keyword, procurement category and region filters.
- closing_soon (Pro): PRO. Open tenders closing within N days (default 14), optional keyword.
- new_since (Pro): PRO. Open tenders published on or after a date (YYYY-MM-DD), optional keyword — for daily monitoring.

## Buying (agents)
1. POST https://ca-tenders-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-tenders-mcp.donniertf.workers.dev/token?session_id=... -> {access_token}.
3. Send Authorization: Bearer <access_token> to https://ca-tenders-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-tenders-mcp.donniertf.workers.dev/x402/<tool> -> HTTP 402 with payment requirements ($0.05 USDC per call, payTo 0x02226D28e0c85AE4AdDB7fe7043Dd2b1Ff710D41). Retry with an X-PAYMENT header (x402 v1, scheme exact, network base). Manifest: https://ca-tenders-mcp.donniertf.workers.dev/.well-known/x402. MCP clients may also send X-PAYMENT on tools/call.
Machine-readable pricing: https://ca-tenders-mcp.donniertf.workers.dev/pricing.json · Server card: https://ca-tenders-mcp.donniertf.workers.dev/.well-known/mcp

## Sources
- CanadaBuys open tender notices CSV, Public Services and Procurement Canada (Open Government Licence – Canada)

## Notes
Open notices from the CanadaBuys open data feed (snapshot 2026-10-14, refreshed on redeploy; closed notices are hidden). Confirm on canadabuys.canada.ca before bidding. Not procurement advice.
Contact: dmorrisonwebdesign@gmail.com. More UK data MCPs: https://github.com/donniertf-hub/uk-mcp-fleet