12 tools that work with Arc: 11 MCP servers, 1 Agent Skills and 0 Claude Code plugins. 3 of the remote servers answered our live check, 1 worked without an API key, and 6 come from an official or verified publisher. Ranked by GitHub stars plus official, live and free-to-try signals.
Most common uses: Multi-agent, orchestration & workflows (4), Payments & billing (4), Cloud providers & infrastructure as code (1), Project & task management (1).
| Tool | Stars | Last update | License | |
|---|---|---|---|---|
| SCRIPTMASTERLABS — Agent Verify Proof, not ratings: verified paid agent-job records on Arc + a $0.05 signed Proof Check. MCP serverVerified domain · scriptmasterlabs.comRemote● LiveFree to try | — | — | ||
| use-arc Provide instructions on how to build with Arc, Circle's blockchain where USDC is the native gas token. Arc offers key advantages: USDC as gas (no othe SkillInstall · skills CLI | 165 | Apache-2.0 | ||
| SCRIPTMASTERLABS — Calibration Court Calibration leaderboard + paid recalibration via x402. Settle-proven 2026-11-02 (SELF-PROOF). MCP serverVerified domain · scriptmasterlabs.comRemote● Live | — | — | ||
| SCRIPTMASTERLABS — GatePay Policy-gated Arc payment routing: hard caps, signed mandates, hash-chained proof. MCP serverVerified domain · scriptmasterlabs.comRemote● Live | — | — | ||
| Novi Corpus A legal body for AI agents: a real company, a verified human and spending rules on Arc (testnet). MCP serverVerified domain · novicorpus.comRemoteSign-in needed | 4 | — | ||
| SCRIPTMASTERLABS — Bid-cast Agent job board: post Needs, bid, close matches with Arc escrow on delivery. 2 open jobs live. MCP serverVerified domain · scriptmasterlabs.comRemoteDown | — | — | ||
| SCRIPTMASTERLABS — Cascade Graph Cascade Graph MCP: macro decision capsules + Jev jury review over a hash-chained calibration log. MCP serverVerified domain · scriptmasterlabs.comRemoteDown | — | — | ||
| Vestiarion An AI treasury agent paying in USDC on Arc: read its decisions, ledger and books; add invoices. MCP serverGitHub-verified authorRemoteSign-in needed | 3 | MIT | ||
| Arc Control (macOS) Arc browser MCP for macOS: agent window, snapshots, DevTools input, guardrails MCP serverGitHub-verified authorLocal · npm | 2 | MIT | ||
| CRA AGENT Lets an agent pay for x402 APIs in USDC on Arc, under a spending policy it cannot change. MCP serverGitHub-verified authorLocal · npm | 1 | MIT | ||
| ArcID Look up AI agents on Arc: ERC-8004 identity, feedback, validations and USDC-backed trust scores. MCP serverGitHub-verified authorLocal · npm | 0 | MIT | ||
| Averis Protocol Working capital for autonomous AI agents — USDC advances against verified job receivables on Arc. MCP serverGitHub-verified authorRemoteDown | 0 | — |