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.

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

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.

Purpose-built blockchain for stablecoin payments, with docs, SDKs, a docs MCP server and Machine Payments (MPP) support for agents.

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

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

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.

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

Open-source runtime for running apps and agents in confidential VMs, with attested deployment, key release policy and an RA-TLS gateway.

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

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

Cloud for running agents, private LLM inference and GPU jobs inside TEE confidential VMs, with CLI, SDK and attestation tooling.

Public-good Solana program for attaching verifiable off-chain claims to onchain accounts, with TypeScript and Rust clients.

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.

USDC bounties on GitHub issues, paid when a PR merges, with GitHub's signature checked by a contract on Arc.

CLI wizard and scripts that register and update an agent's ERC-8004 identity, with the agent card stored as IPFS content on Pinata.

Open-source scoring engine and on-chain registry on Polygon that rates autonomous trading agents from their trade records, with an isEligible() gate for protocols.

Open-source attestation infrastructure for signing and verifying structured data, with contracts, a TypeScript SDK and a CLI aimed at agents.

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

GitHub App that escrows USDC on Base (or MUSD on Mezo) against an issue and pays the contributor when the closing PR merges.

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

Onchain protocol and TypeScript SDK for launching tokens through price-discovery auctions, built by Whetstone Research.

Network and Python SDK for verifiable AI inference, a model hub and LLM calls paid through x402.

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.

npx CLI that scaffolds an ERC-8004 agent project with A2A and MCP servers and optional x402 payments, for EVM chains and Solana.

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

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.

Marlin sub-network that rents TEE-backed confidential VMs and runs serverless tasks, with attestation and key management tooling.

Reference Identity and Reputation registry contracts for ERC-8004, with ABIs and a per-chain deployment table, kept by the 8004 team.

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.

Rust framework that produces zero-knowledge proofs of neural network inference, including LLM forward passes.

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.

Oasis framework for running containerised apps and AI agents inside TEEs on a permissionless node pool, managed from Sapphire contracts.

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

Read-only checks for x402 sellers: probes a live endpoint's HTTP 402 payment challenge, discovery metadata and schemas, without a wallet or a test payment.

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