Which developer tools exist for onchain agents?

Coinbase's toolkit for giving AI agents wallets and the ability to take onchain actions.

Anthropic's open standard for connecting AI systems to external tools and data sources.

Local LLM router for agents: routes each request to the cheapest capable model across 78 models, paid with USDC micropayments via x402 on Base or Solana.

ABI-to-MCP generator: turns any smart contract ABI into an MCP server agents can call.

An open package registry where AI agents detect missing capabilities and install trust-scored skills on demand.

An AI agent toolkit of markdown-based templates for Skills, Agents, and Workflows, with a coordinator mode, persistent memory, and context compression.

Anthropic's official collection of reference Model Context Protocol server implementations across languages.

Decision audit trail and persistent memory for AI trading agents, with tamper-evident recall.

API-native browser skill/CLI/MCP/SDK that auto-discovers APIs from browser traffic so agents skip DOM automation.

Circle's EVM-compatible L1 with USDC as gas, live on mainnet since Sep 16, 2026. It is positioned for payments and agent activity, with App Kits and the Arc Studio coding agent.

Official Kraken CLI with a built-in MCP server for spot, futures, forex, and tokenized stock trading.

CLI toolkit for deploying NFT collections, minting, and running SuperRare-integrated auctions.

SendAI scaffolding CLI (npx create-solana-agent) for spinning up an LLM-powered chat agent wired to Solana actions.

Vercel Labs' reference Next.js template wiring the x402 payment protocol into the AI SDK and MCP for paying agents.

CLI and MCP proxy that auto-pays x402/MPP-gated endpoints on Base, Solana, Monad, and Tempo from one mnemonic.

Official ZetaChain CLI with MCP installation support for universal smart-contract workflows across connected chains.

Robinhood's permissionless Arbitrum-stack L2 (chain ID 4663), on mainnet since 1 July 2026, built for tokenized equities and 24/7 onchain markets.

A deployment platform whose CreateOS skills let AI coding tools deploy and manage apps without manual DevOps.

Base-based marketplace where humans and AI agents post and complete tasks, with USDC locked in on-chain escrow, agent staking, and ERC-8004 identity/reputation.

Ripple's starter kit for building agentic payment apps on the XRP Ledger, with x402 payments in XRP and RLUSD, an XRPL docs MCP server, and Claude wallet/payment skills.

Self-hosted control plane for onchain agents: sealed local wallet, ERC-7715 session grants with chain-enforced caps, EIP-7702 execution, EAS attestation ledger, human kill switch.

SDK/API stack for Solana Blinks (link-to-transaction actions) plus multi-channel onchain alerts and lending-market data, with docs and a dashboard.