Single tool 'fetch' has a well-structured schema with 8 parameters, all typed and described. Description is clear and actionable (156 chars). However, output schema is not documented, the docstring mentions 'A structured dict with url, body (markdown), metadata, links, risk_level, injection_matches, sanitization stats, and edge case info' but does not formally specify field types, required fields, or structure. Parameter descriptions are good but could be more prescriptive about constraints (e.g., timeout range, max_words bounds). No error handling guidance for LLMs (e.g., what to do if URL is unreachable or injection is detected). Deprecation warning for 'headers' param is good practice but adds complexity.

• Document the output schema formally: specify that the return dict contains {url: string, body: string, metadata: object, links: list, risk_level: string, injection_matches: list, sanitization_stats: object}. Include field types and whether each is required.
• Add min/max constraints to numeric parameters: timeout (1 - 3600 seconds), max_words (1 - 100000 or null). Include these in parameter descriptions.
• Add format hint to 'url' parameter: 'Must be a valid HTTP or HTTPS URL (e.g., https://example.com).'
• Document error scenarios and recovery paths: 'If the URL is unreachable, check the URL format and network connectivity. If injection is detected and strict=true, consider using strict=false to see the content with sanitization applied.'
• Remove or fully deprecate the 'headers' parameter in the next major version. If keeping it, move it to a separate 'legacy' section in the schema.