Single tool with bare-minimum implementation. Schema is present but minimal. Description is adequate in length (159 chars, within baseline 34-392 range) but lacks critical details about prerequisites, return structure, and error conditions. No input validation guidance, no output schema documentation, no error recovery hints. Input parameter lacks format/constraint documentation. No pagination support despite potentially returning multiple results. Basic implementation suitable for internal demo, well below production baseline.

• Document output schema: 'Returns object with fields: results (array of {name, address, siret, siren, directors, sector, ...}), total_count (number), query_used (string)'. Specify what each field represents and type.
• Add constraint documentation to 'query' parameter: 'Search query string (1-500 chars). Accepts company name, CEO name, SIRET/SIREN number, or address. Special chars may be ignored by the API.'
• Add error handling guidance: 'Returns isError=true if: (1) API unavailable → retry after 10s, (2) no results found → suggest trying CEO name or SIRET, (3) rate limited → wait 60s before retry.'
• Implement and document pagination: add 'page' (default 1) and 'per_page' (default 10, max 50) parameters. Return 'total_results', 'page', 'per_page' in response so LLM knows how many results exist.
• Enhance description: 'Search the French government company registry (siren.gouv.fr) for detailed company info including directors, sector classification, and registered address. Use when verifying company identity or gathering business context. Returns only exact/close matches, try SIRET if name fails.' (covers WHAT, WHEN, RETURN expectations).
• Add output structure to description or as separate schema: clarify which fields are always present vs optional, and what 'not found' looks like (empty results array vs error flag).