DCP exposes 17 high-risk financial and credential tools with critical definition gaps. Tool names lack consistent verb-noun structure (e.g., 'signTx' vs 'sign_tx', 'pairService' vs 'pair_service'). Descriptions are present but generic (avg ~80 chars, well below the 194-char baseline for A+ tools). Most critically: parameter schemas are minimal, many lack type constraints, enums, or validation guidance. No output schemas documented. Error handling is absent; no recovery guidance. Security-critical tools (signTx, transfer, swap) lack confirmation patterns or dry-run support. Composition is poor: signTx and signWithVault do nearly identical work; readCredential/writeCredential lack scope validation. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite irreversible operations.

• Add tool annotations: mark signTx, transfer, swap, signWithVault, writeCredential, approveConsent with destructiveHint=true; mark getAddress, readCredential, readData, listScopes, listSessions, healthCheck with readOnlyHint=true.
• Consolidate overlapping tools: merge signTx and signWithVault into a single sign_transaction tool with optional session_id parameter. Merge readCredential and readData into read_vault_data with scope parameter.
• Add enum constraints: chain ∈ {solana, ethereum, polygon, ...}; currency ∈ {SOL, USDC, ETH, ...}; status ∈ {pending, approved, rejected}. Document in parameter descriptions.
• Implement confirmation pattern for irreversible operations: add dry_run boolean parameter to signTx, transfer, swap, signWithVault. Return estimated fees/impact without executing. Require explicit confirmation for actual execution.
• Document output schemas for all tools. E.g., signTx returns {tx_hash: string, status: 'signed'|'pending', timestamp: ISO8601}. transfer returns {tx_hash, confirmation_status, amount, destination, timestamp}. Enable tool chaining.