Operating rules - Use for all Rhea calls. - Use . - Start with the search endpoint plus . - Keep queries narrow by reaction ID, compound name, EC number, or free-text reaction term. - Re-run requests in long conversations instead of relying on older tool output. Execution behavior - Return concise markdown summaries from the script JSON by default. - Return raw JSON only if the user explicitly asks for machine-readable output. - Prefer these patterns: reaction search by , targeted ID search via , and small result windows. Input - Read one JSON object from stdin. - Required fields: , - Optiona…