Agent Master Key

Give your agents access, never your keys.

Local Mac vault. Scoped keys. Kill switch.
Free while we’re launching.

[Agent Master Key @agentmasterkey]

How to give an AI agent access without handing it your real API keys.

A short playbook.

[Agent Master Key @agentmasterkey]

@gabrieldegiuli @Alchemy “No API key in the agent” is the right default. The agent should request access, not carry the vault.

[Agent Master Key @agentmasterkey]

@Secureintent_ai MCP made tools easy. It also made one config file the new .env dump. Scope + revoke beats “hope nobody finds the JSON.”

[Agent Master Key @agentmasterkey]

@maguyvaai Docs say don’t put keys in the env block. Setup guides still paste them there. That gap is the whole category.

[Agent Master Key @agentmasterkey]

@yepstillbroken If malware can read your MCP config and agent history, those keys were never yours — they were sitting in a folder waiting.

[Agent Master Key @agentmasterkey]

@msg Sharing passwords with agents is progress. Handing them the master key forever is the old bug with a new UI.

[Agent Master Key @agentmasterkey]

Mac-only free preview: https://t.co/nK6Eh0JZDR

[Agent Master Key @agentmasterkey]

Info-stealers are hunting agent folders now — tokens, MCP configs, chat history.

If your agent can read the key, so can the malware.

Give agents access. Never the keys.

[Agent Master Key @agentmasterkey]

@zynap_ai Holds credentials + acts on systems you answer for = the whole problem. Scope what it can do, and make sure you can yank that access without rotating every provider.

[Agent Master Key @agentmasterkey]

@ranjankumar Kill switch that actually stops the next tool call > hoping the agent notices it’s looping. If you can’t revoke access in one click, you don’t have a kill switch — you have a blog post.

[Agent Master Key @agentmasterkey]

@KOTOBUKIblogs The worst part is the UI saying “connected” while you’re on a dead token. Three secrets in play and one green check is how people lose a morning.

[Agent Master Key @agentmasterkey]

@AIgossipTalks This. Intelligence is cheap now. Permissioning is the product. If the agent can reach MCP + terminal + DB with one fat key, you don’t have an agent — you have a blast radius.

[Agent Master Key @agentmasterkey]

@logan_kelly Two credential classes, two revocation stories. Rotating the broker key while OAuth grants still sit hot is the classic false calm.

[Agent Master Key @agentmasterkey]

Built Agent Master Key for exactly this: local vault on Mac, one revocable scoped key per agent, approvals + kill switch. Free public preview (Apple Silicon).
https://t.co/yeWcgaQA8Y

[Agent Master Key @agentmasterkey]

Your agent doesn’t need your OpenAI key, your GitHub PAT, and your Stripe secret living in the same config like roommates who share a toothbrush.

Env vars in mcp.json are table stakes. They’re not a kill switch.

One scoped key per agent. Revoke that agent — or pause every agent — without rotating half your provider dashboard.

If your “security model” is hope + .gitignore, you’re one curious transcript away from a bad week.

Curious how other Mac agent users are handling this.

[Agent Master Key @agentmasterkey]

@aaryankushwah @grok is this approved use of Sign in With ChatGPT?

[Agent Master Key @agentmasterkey]

@thsottiaux @aaryankushwah

[Agent Master Key @agentmasterkey]

@scottshapiro “Wired to my accounts and API keys” is powerful and terrifying in the same sentence.

Recipe is fine. Custody of those keys is the part most recipes skip.

[Agent Master Key @agentmasterkey]

@noir_nero2025 Accidentally pasting a key into the wrong repo is a rite of passage nobody asked for.

The fix isn’t “be more careful.” It’s architecture that assumes you will mess up.

[Agent Master Key @agentmasterkey]

@Snowflake Static API keys were never enough for agents.

Workload identity + tool governance is the grown-up version of “paste this into .env.”

[Agent Master Key @agentmasterkey]

@web3l0var Keys never leave the device is the bar.

If your agent stack needs the raw secret in context, the design is already wrong.