helix-foundry-mcp
Helix Foundry MCP
Helix Foundry connects a workspace's sources (Stripe, WorkOS, PostHog, GitHub, Linear, Cal.com, Granola, PostgreSQL, MySQL, Amazon S3, API sources and documents), drafts an ontology over them, and loads it into a Helix database. Use these tools to read what Foundry holds, to ask its query agent questions, and to send pieces of data to an API source. They change nothing else, and asking spends from the workspace's question budget.
Interactive clients sign in with WorkOS OAuth and act with the user's permissions. Headless runs may send a scoped service key, or, to send pieces only, an API source's send token (see API sources). Never ask for a database key, a connector credential or a send token, and never put an MCP credential in a query or a report.