Summary
Gives Claude seven tools to orchestrate on-chain automation workflows on Base and Ethereum mainnet without holding user keys. You compose trigger-action-condition graphs in natural language (price alerts, whale watching, DCA schedules, snipe-and-flip strategies), the agent calls ctrl_create_workflow to build it, then ctrl_activate generates an EIP-5792 batch that deploys a personal vault contract with immutable spending caps. A keeper fleet executes your rules forever under those caps. The block catalog exposes 24 primitives including Clanker/Bankr pool sniping, Cypher swaps, balance checks, and Telegram notifications. Useful when you want persistent DeFi automation that survives beyond a single agent session, with on-chain guardrails and one-click kill switches.
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ctrl-mcp
the mcp for on-chain automation. sign once, agent does the rest, forever.
ctrl is workflow automation for on-chain actions on base. you compose trigger → action → condition graphs in plain english, sign one batch to deploy a vault + spending caps, and a keeper runs your workflow under those caps forever.
this is the mcp surface. agents talk to it. users sign in their wallet.
$ claude mcp add ctrl https://ctrl.build/api/mcp
or paste into your client's mcp config:
{
"mcpServers": {
"ctrl": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://ctrl.build/api/mcp",
"--header", "Authorization:Bearer ${CTRL_API_KEY}"],
"env": { "CTRL_API_KEY": "sk_ctrl_..." }
}
}
}
mint a key at ctrl.build/settings/api-keys.
prompt your agent. that's it.
what your agent gets
seven tools. that's it.
| tool | what it does |
|---|---|
ctrl_get_vault_status | read user's vault address, balance, active rules |
ctrl_get_block_catalog | live list of every block + field schema |
ctrl_create_workflow | assemble + save a workflow draft from a prompt |
ctrl_activate | encode the eip-5792 batch the user signs to deploy |
ctrl_withdraw | encode the batch to pull funds out of the vault back to the user's wallet (eth, weth, or any erc-20) |
ctrl_fire_manual | fire a workflow once for testing — no waiting |
ctrl_get_execution_logs | basescan tx hashes, gas, status — keeper history |
24 blocks under the hood
triggers — time.interval, trigger.manual, price.above/below/change, pool.created (clanker / flaunch / zora / bankr), watch.whale, event.transfer, event.balance, trending.token
actions — cypher.swap, read.balance, notify.telegram, notify.discord, util.webhook
conditions — cond.price, cond.balance, cond.allowed_weekdays, cond.time_window
utilities — util.delay, util.note, util.log, util.stop, util.snapshot
the agent calls ctrl_get_block_catalog first to see the live shape. every block id maps 1:1 to keeper execution.
example prompts
drop these into your agent and watch:
- "dca $50 eth into usdc every monday at 14:00 utc"
- "snipe new flaunch launches with
miladyin the name, 0.005 eth each, auto-sell at 2x" - "watch wallet 0x6cc5...c01b. when they buy anything over $10k, copy with 0.01 eth"
- "sell 50% of my pepe if price drops 20% in an hour"
- "every monday noon, check moonwell usdc apy. if lower than morpho by 1%, move 80%"
security
vault-direct model. agent never holds keys.
- on-chain caps: every rule signs immutable
maxPerSwap+maxPerDay. enforced by the vault contract. - kill switches:
pauseVault()halts everything;revokeRule(id)kills one workflow. both 1-tx, user-callable. - safety primitives:
pool.createdruns goplus honeypot + tax + score checks before any swap. - keeper bounded: the keeper fleet can only call methods the vault permits. compromised keeper costs at most one tick's per-swap cap.
verified contracts on base:
- v13 vault factory — 0x5Df25e79efd7f9dc86841b404b3EA6F4b7951DBB
- vault implementation — 0xc98137a6df7fb91ab91b568bf923490a278aa702
- timelock beacon — 0x5760A6D62743860F27843fA314E22166dBEF7d73
ecosystem
works with any mcp client. tested with:
- claude code ·
~/.claude.json - claude desktop ·
~/Library/Application Support/Claude/claude_desktop_config.json - cursor ·
~/.cursor/mcp.json - hermes (nousresearch/hermes-agent)
- aeon (aaronjmars/aeon)
- app · ctrl.build
- docs · ctrl.build/docs
- mcp hub · ctrl.build/mcp
- sibling repo · ctrl-skill
mit
Featured
Fastest browser for AI agents to run web automation tasks, always free.
Download Free life-time →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →Categories
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TransportHTTP
UpdatedJun 4, 2026
