Connect OECD Data to Codex
Query OECD Data directly from Codex. Arlet links the two through one MCP connection and takes care of API keys.
Connects your AI client to the OECD SDMX API (sdmx.oecd.org), the backend of OECD Data Explorer.
Tools:
- search_oecd_dataflows: keyword search over OECD-provided dataflows (the full list is cached; the first call can take ~10 seconds).
- get_oecd_dataflow_dimensions: dimension order and codes for one dataflow; shows the exact key template for the data query.
- get_oecd_data: observations for a dimension key (empty segment = wildcard, or 'all'), with lastNObservations control.
Implementation note: the OECD service returns HTTP 500 unless an Accept-Language header is sent; this server handles that. Attribution: data are from OECD Data Explorer (https://data-explorer.oecd.org).
How to connect OECD Data to Codex
- 1
In the Arlet dashboard, open Data tools, find OECD Data and switch it on. No API key setup is needed.
- 2
In your terminal, run codex mcp add arlet --url https://mcp.arlet.dev/mcp/ to add Arlet as an MCP server.
- 3
Codex detects OAuth support and opens your browser. Sign in with Google and click Allow on the consent screen.
- 4
Once connected, both the CLI and the IDE extension can call Arlet tools (the configuration is shared).
If the browser does not open, run codex mcp login arlet to redo the authentication.