Operating rules - Use for all ChEBI calls. - Use . - Prefer the documented public routes under . - Start with for free-text lookup and use for targeted records. - 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 paths: , , and ontology child or parent routes. Input - Read one JSON object from stdin. - Required fields: , - Optional fields: , , , , , , , , , , , - Common ChEBI patterns…