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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[4.0.0] — 2026-03-22

Added

  • 11 new MCP tools:
    • lookup_token — look up token address and decimals by symbol + chain ID
    • add_custom_token — register custom ERC-20 tokens in the global token registry
    • list_chain_tokens — list all registered tokens for a given chain
    • send_token — send any ERC-20 token using symbol-based registry resolution
    • get_balances — fetch balances for multiple tokens on a chain
    • swap_tokens — token swaps via Uniswap V3 (Base, Arbitrum, Optimism, Polygon)
    • bridge_usdc — cross-chain USDC bridging via Circle CCTP V2
    • set_spend_policy — configure daily limits, per-tx caps, and recipient allowlists
    • check_budget — query on-chain remaining budget for a token/spender
    • verify_agent_identity — verify agent ERC-8004 on-chain identity
    • get_reputation — fetch agent reputation score and interaction history
    • create_escrow — create mutual-stake USDC escrow vaults
  • Full agentwallet-sdk v6.0.0 integration across all new tools
  • TokenRegistry support — 100+ pre-loaded tokens, custom token registration at runtime
  • Multi-token transfers — any ERC-20 or native gas token via send_token
  • Uniswap V3 swap support via SwapModule (Base, Arbitrum, Optimism, Polygon)
  • CCTP V2 cross-chain USDC bridging via BridgeModule (10 EVM chains)
  • Spending policy management with in-process enforcement via SpendingPolicy
  • ERC-8004 agent identity verification via ERC8004Client
  • Agent reputation scoring via ReputationClient
  • Mutual stake escrow creation via MutualStakeEscrow
  • 42 new tests (149 total)
  • 99.6% type coverage

Changed

  • Upgraded agentwallet-sdk dependency from v5.x to v6.0.0
  • Version bump from 3.1.0 → 4.0.0

[3.1.0] — 2026-03-15

Added

  • queue_approval tool — approve or cancel queued transactions that exceed per-tx cap
  • check_spend_limit tool — check remaining allowance for a given token in the current period
  • Budget forecast and wallet health endpoints via getBudgetForecast and getWalletHealth
  • Utilization badge display (🟢 / 🟡 / 🔴) in get_wallet_info output
  • Pending approvals management via getPendingApprovals, approveTransaction, cancelTransaction
  • get_transaction_history event type filter: policy_update, operator_update

Changed

  • get_wallet_info now includes period utilization %, spend forecast, and queue depth
  • Improved error messages with chain-specific explorer links

Fixed

  • Decimal precision handling for ERC-20 tokens with non-18 decimals in send_payment

[1.1.0] — 2026-03-01

Added

  • x402 V2 session payment support — pay once, reuse token N times:
    • x402_session_start — establish a session by paying the endpoint once
    • x402_session_fetch — make calls within an active session (no new payment)
    • x402_session_status — inspect active sessions and TTL remaining
    • x402_session_end — explicitly close a session
  • Session Manager (src/session/manager.ts) — in-memory session store with TTL enforcement
  • Auto-session detection in x402_pay — injects session headers automatically if a valid session covers the URL
  • skip_session_check parameter on x402_pay to force fresh payment
  • Session scope options: "prefix" (covers all sub-paths) and "exact"

[1.0.0] — 2026-02-15

Added

  • Initial release of AgentPay MCP Server
  • Core MCP tools:
    • deploy_wallet — deploy a new AgentAccountV2 smart contract wallet via factory
    • get_wallet_info — retrieve wallet address, balance, and spend limit info
    • send_payment — send ETH or ERC-20 tokens via the AgentAccountV2 contract
    • check_spend_limit — check current period spend allowance
    • queue_approval — approve or cancel queued transactions
    • x402_pay — auto-pay x402 paywalled URLs
    • get_transaction_history — query on-chain event logs
  • MCP stdio transport (compatible with Claude Desktop, Cursor, Windsurf)
  • Non-custodial design — agent signs locally, owner controls limits via NFT ownership
  • On-chain spend limits enforced by AgentAccountV2 contract
  • Zod-validated input schemas for all tools
  • TypeScript + viem + agentwallet-sdk foundation
  • MIT License