Two tools with complete schemas and reasonable descriptions. Both tools have proper input schemas with typed properties and required arrays. Descriptions are adequate (150-200 chars) but lack actionable guidance on when to use each tool vs. the other, or error recovery paths. Parameter descriptions are present but minimal. No output schema documentation. No error handling guidance. Missing tool annotations (readOnlyHint). Naming is clear (resolve, identify) but could be more verb-forward (e.g., resolve_chemical_identifier). No pagination, no batch operations, no composition hints.

• Add output schema documentation for both tools. E.g., resolve() returns {identifier, representation, value, values?} and identify() returns {identifier, smiles, inchikey, iupac_name, formula, mw, cas}.
• Convert 'representation' parameter in resolve() to an enum: ['smiles', 'stdinchi', 'stdinchikey', 'iupac_name', 'names', 'formula', 'mw', 'cas']. Remove the free-form string description.
• Add readOnlyHint: true to both tool definitions to signal they are safe to retry and have no side effects.
• Enhance error responses with recovery hints. E.g., 'could not resolve identifier "aspirin" as smiles. Try identify() to see all available properties, or verify the identifier format.'
• Clarify tool selection in descriptions: 'Use resolve() to get a single property (faster); use identify() to get all properties in one call (more convenient).'