Developers

Two minutes to bounded agents.

Install. Sign an envelope. Wrap your agent.

~/my-agent

$ npm install safeshake added 1 package in 2s $ npx safeshake init ✓ envelope env_001 created ✓ signed by you · ed25519 $ npx safeshake wrap ./agent.ts ✓ 14 tool calls now checked ✓ budget €50 / day · new payees blocked Ready in 1m 48s

Start building Join the community

002The token burn

002A true story, give or take

One retry loop. One long night.

At 03:02 an agent hits an error and starts retrying. Nobody is awake. Scroll to watch the night play out twice.

Without SafeShake{{clock}}

{{tokA}} tokens{{callA}} calls

Stopped by the envelope

With SafeShake{{clock}}

{{tokB}} tokens{{callB}} calls

003Install

003Three steps, two minutes

Easy to add.Hard to get round.

No wallets, no keys handed to the agent, no rewrite. The SDK is in private preview. Names and syntax may change.

[01] Install

Add the package

# Node, Python and Go npm install safeshake pip install safeshake

[02] Sign

Write and sign an envelope

const env = envelope({ owner: 'you@company.com', budget: '€50 / day', allow: ['openai.*', 'stripe.charge'], deny: ['new_payee'] })

[03] Wrap

Wrap your agent

export const agent = guard(myAgent, env) // every tool call is now // checked, then recorded

004Use cases

004What people build

Give agents real jobs.Keep the limits real too.

[01] Token spend

Cap the model bill

Daily and per-task budgets on every model call.

[02] Coding agents

Ship code, not surprises

Allow the repo and the tests. Block production and deletes.

[03] Procurement

Pay known suppliers only

New payees wait for a human. Everything else flows.

[04] Support

Refunds under a limit

Agents settle small claims on their own, with a record.

[05] Research

Paid APIs, on a budget

Search, data and scraping tools with a spend ceiling.

[06] Agent teams

Many agents, one budget

One envelope shared across a crew, with state they all respect.

Works alongside

LangChainCrewAIOpenAI Agents SDKAnthropicMCPVercel AI SDKAutoGenLlamaIndex

005Community

005Build it with us

Come andbreak things with us.

Coming soon

Discord

Ask, share, get help.

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Coming soon

GitHub

SDKs, examples and the verifier.

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Coming soon

Docs

Guides and the full reference.

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Hackathon

Break the Envelope

Beat the limits. Win the prize.

→