DataCanvas primitive reference — a Tier 3 SQL/analytical workspace for tabular MCP servers, backed by DuckDB. Use when registering tables from upstream APIs, running ad-hoc SQL across them, and exporting results. Covers the acquire → register → query → export flow, per-table TTL, the token-sharing pattern for multi-agent collaboration, env config, and Cloudflare Workers fail-closed behavior.
How to install api-canvas?
cyanheads/clinicaltrialsgov-mcp-server/api-canvas
$npx -y skills add cyanheads/clinicaltrialsgov-mcp-server --skill api-canvasInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/cyanheads/clinicaltrialsgov-mcp-server" --skill "cyanheads/clinicaltrialsgov-mcp-server/api-canvas"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/cyanheads/clinicaltrialsgov-mcp-server" that are relevant to the current task. Run `npx skills add "https://github.com/cyanheads/clinicaltrialsgov-mcp-server"` and select the relevant skills, then follow their instructions.
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