Sei Agent Kit provides 17 tools with consistent naming (verb_noun pattern: get_balance, cosmos_prepare_send, etc.) and descriptions present for all tools. However, descriptions are brief (avg ~60 chars, below the 194-char baseline for A+ tools) and lack actionable context. Parameter schemas are visible and typed, but descriptions for parameters are minimal, most are 1-2 sentences without format constraints, ranges, or dependency documentation. Output schemas are not documented. Error handling is absent from tool definitions. Security-critical tools (cosmos_broadcast_signed_tx, broadcast_signed_raw_transaction) lack confirmation/dry-run patterns despite being IRREVERSIBLE. Tool composition is sound (separate prepare/broadcast steps), but descriptions don't explain this workflow or when to use each tool.

• Expand tool descriptions to 100-200 chars. Include WHEN to use, prerequisites, and workflow context. E.g., 'Prepare a Cosmos send transaction (returns txBytes for signing). Must be followed by cosmos_broadcast_signed_tx. Requires sender to have sufficient balance.'
• Add format/range constraints to all numeric and string parameters. E.g., amount: 'Amount in usei (positive integer, min 1, max 10^18)'. Use enums for fixed sets (e.g., denom: enum [usei, ibc/...]).
• Document output schemas for all tools. Specify returned fields, types, and what IDs/references are included for chaining. E.g., cosmos_broadcast_signed_tx returns {txHash: string, height: number}.
• Implement confirmation pattern for irreversible operations. Add optional 'dry_run' parameter to broadcast tools, or create separate 'confirm_transaction' tool that must be called before broadcast.
• Add error handling guidance to tool descriptions. Document common failure modes (insufficient balance, invalid address format, network timeout) and recovery steps for each.