Schema | Descartes

Descartes

Describes the environment variables required to run the server.

Name	Required	Description
`EXA_API_KEY`	No	API key for Exa to ground world doubts with real evidence.
`FIREWORKS_API_KEY`	No	API key for Fireworks to enable panel of model families for doubt resolution.
`OPENROUTER_API_KEY`	No	API key for OpenRouter as fallback when sampling is unavailable.
`DESCARTES_PANEL_SIZE`	No	Maximum number of models in the panel for live path (optional).

Features and capabilities supported by this server

Capability	Details
`tools`	{ "listChanged": false }
`prompts`	{ "listChanged": false }
`resources`	{ "subscribe": false, "listChanged": false }
`experimental`	{}

Functions exposed to the LLM to take actions

Name	Description
doubtA	Doubt every decision in a plan, doubt the doubts, and answer each from real evidence — codebase `context` for code doubts, Exa for world doubts — or flag it for the human. Iterate until the plan produces no new load-bearing doubt (convergence). 20 is a hard ceiling, never a target. Args: prompt: the task / plan to harden. context: real evidence (paste relevant files, types, tests, notes) used to resolve code doubts without guessing. max_passes: convergence ceiling (clamped to 20). Returns: {passes_used, converged, plan, doubt_log, needs_user, engine, open_doubts}
groundB	Exa deep search -> cited, confidence-scored facts (used inside the loop). Low confidence is reported as UNKNOWN and never asserted.
verdictA	Gate a doubt() result. Proceed only if the plan converged with no open load-bearing doubt remaining; otherwise return the blocking questions.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

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