Five tools with basic verb-noun naming (search_web, scrape_url_chromium, discover_urls, index_scrapes, search_engine_drilldown). Descriptions present but generic and under 200 chars. Input schemas visible with type declarations but parameter descriptions are minimal or missing context. No output schemas documented. Error handling absent, no recovery guidance or actionable error messages. Tool composition is reasonable (each does one thing), but parameter naming lacks consistency (query vs seed_url) and no enum constraints on engine selection despite known set of 8 engines.

• Document output schema for each tool. Example: search_web returns {results: [{engine: string, url: string, title: string, snippet: string}], engine_breakdown: {[engine]: count}}. This enables LLMs to chain tools correctly.
• Add enum constraint to search_engine_drilldown's 'engine' parameter: enum=['google', 'duckduckgo', 'mojeek', 'startpage', 'brave', 'bing', 'yandex', 'openalex']. Prevents hallucinated engine names.
• Expand parameter descriptions to 50-100 chars each. Example: 'query: Search keywords (2-5 words, e.g. "python async patterns"). Use search_engine_drilldown to see URLs per engine after calling this.'
• Add error handling with recovery guidance. Example: 'If scrape_url_chromium returns timeout, try a different URL or call search_web to find alternative sources.'
• Validate discover_urls' url_file parameter against path traversal. Reject paths containing '..', absolute paths, or symlinks. Return clear error: 'url_file must be a relative path in the current directory.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry