Loomscope Observer provides three well-named, verb-prefixed tools (observe_start, observe_report, observe_finish) with clear, actionable descriptions (60 - 150 chars each). All tools have complete JSON Schema input definitions with required fields and typed properties. However, parameter descriptions are sparse or missing for many fields (e.g., 'metadata' in observe_start lacks guidance on expected structure; 'artifacts' array in observe_report has no item schema). Output schemas are not documented. Error handling is minimal, no recovery guidance or categorization. The tools follow a logical composition pattern (lifecycle: start → report → finish) but lack idempotency hints and confirmation patterns for the WRITE-risk operations.

• Add detailed descriptions for 'metadata' parameter: 'Optional object with custom key-value pairs for run context (e.g., {"model": "gpt-4", "temperature": 0.7}). No size limit enforced server-side.'
• Define 'artifacts' array schema: specify item type (object with 'name', 'type', 'url' fields) and provide examples (e.g., '[{"name": "final_report.md", "type": "markdown", "url": "https://..."}]').
• Document output schema for all three tools. Example: 'Returns {"success": true, "eventId": "evt_...", "timestamp": "2024-01-15T10:30:00Z"}' so agents know what to expect.
• Add error recovery hints to descriptions: 'If runId is invalid, the server returns 400 with message "Run not found". Verify runId matches a prior observe_start call.'
• Enhance 'type' enum description in observe_report: 'checkpoint: progress milestone; decision: agent choice point; obstacle: blocker encountered; artifact: output produced. Choose the most specific type.'
• Add idempotency note to observe_finish: 'This operation is irreversible. Calling twice with the same runId will update the existing record, not create a duplicate.'