Five tools with complete input schemas and descriptions, but significant quality gaps. All tools have descriptions (good baseline), but they lack actionable detail for LLM selection. Parameter descriptions are present but generic. No output schemas documented. No error handling guidance. Tools are READ_ONLY (safe), but lack composition hints and chaining IDs. Naming is clear (verb_noun pattern: customs_calculate, hs_classify, incoterms_check, logistics_estimate, currency_rate), but descriptions read like API docs rather than LLM-optimized prompts. No enum constraints on string parameters (e.g., 'transport' accepts 'auto, rail, sea' as free text). No pagination support despite logistics_estimate and currency_rate potentially returning large datasets. Average description length ~150 chars (within baseline 194), but lacks WHEN/WHY context for tool selection.

• Add output schemas to all tools. Document fields returned by Bankr API (e.g., customs_calculate returns {customs_value_kzt, duty_rate, duty_amount, vat_rate, vat_amount, total_landed_cost_kzt, total_landed_cost_usd}). LLMs need this to extract values for follow-up calls.
• Convert string parameters to enums. Replace 'transport: string' with enum ['auto', 'rail', 'sea']. Replace 'term' in incoterms_check with enum of valid Incoterms. Replace 'from'/'to' in currency_rate with enum ['USD', 'KZT', 'CNY'].
• Enhance descriptions with WHEN/WHY. E.g., 'Use hs_classify first to find the HS code, then pass it to customs_calculate to get duty costs.' Add dependency hints: 'If you only have a goods description, call hs_classify first.'
• Add error handling guidance in tool descriptions. E.g., 'If Bankr API returns x402 payment error, the user must connect their wallet at https://bankr.bot. If HS code is invalid, try a broader goods description and call hs_classify again.'
• Include chaining IDs in response documentation. customs_calculate should return hs_code so agent can pass it to hs_classify for verification. logistics_estimate should return origin/destination/transport so agent can refine estimates.