Agent Master KeyAMK vs the alternatives
There are several good ways to keep AI agents away from your raw credentials, and Agent Master Key is not the right one for everybody. This page compares the main options as plainly as we can. Where a competitor's offering varies by plan, deployment, or setup, we say "varies" rather than guess. Corrections welcome: support@agentmasterkey.com.
At a glance
| Agent Master Key | Infisical Agent Vault (free OSS) | ToolHive (free OSS) | 1Password (enterprise agent access) | Cloud brokers (Composio-style) | |
|---|---|---|---|---|---|
| Who it's for | Individuals on a Mac who want AI agents to use their accounts without handing over raw keys — no infrastructure to run. | Developers and teams who use (or want to self-host) Infisical's secret-management platform and extend it to agents. | Developers running MCP servers who are comfortable with containers and developer tooling. | Organizations on 1Password business/enterprise plans extending managed credential access to agents. | Teams that want hosted, managed integrations and are comfortable with a cloud service in the loop. |
| Price model | $129 one-time ($99 early-bird), up to 2 Macs, no subscription. Free plan (2 connectors and 1 agent) after a 3-day full trial. | Free open source to self-host; paid cloud and enterprise plans exist (varies). | Free open source. | Subscription; agent-access features are positioned for business/enterprise plans (varies). | Typically subscription or usage-based (varies by vendor). |
| Local-first (keys stay on your machine)? | Yes — encrypted vault and policy broker run on your Mac (127.0.0.1); provider secrets are not uploaded to us. | Varies — self-hosting keeps secrets on your own infrastructure; the hosted cloud stores them in Infisical's service. | Largely yes when run on your own machine (varies by setup). | No — vaults sync through 1Password's cloud (end-to-end encrypted). | No — credentials are typically held or proxied by the vendor's cloud (varies). |
| Docker/terminal required? | No — native Mac app, no terminal required. | Self-hosting generally involves Docker/CLI; the hosted cloud reduces this (varies). | Container runtime required; provides CLI and UI tooling (varies by workflow). | No for end users; admin setup runs through the console, and developer tooling uses a CLI (varies). | No — typically a web dashboard plus SDK/API. |
| One-click agent connect? | Yes for supported connectors — you bring an API key, AMK issues the agent a scoped key. | Configuration-driven; designed for developer workflows (varies). | Positions as a streamlined way to run MCP servers (varies). | Managed through admin policies and integrations (varies). | Often yes, via hosted OAuth flows (varies by vendor). |
| Kill switch + audit trail | Yes — instant per-key revocation, a kill switch that pauses every agent, and a local redacted audit trail. | Audit logging and access revocation available; depth varies by plan and deployment. | Container isolation and permission controls; audit features vary. | Enterprise audit and reporting available (varies by plan). | Vendor-side logs and revocation (varies). |
| Open source? | No. | Yes — the core platform is open source. | Yes. | No. | Varies by vendor. |
Competitor descriptions are based on public materials as of July 2026 and are intentionally conservative. All product names are trademarks of their respective owners; none of these projects or companies is affiliated with Agent Master Key.
What AMK is NOT
- Not cross-platform. AMK runs on macOS 14 (Sonoma) or later on Apple Silicon (M1 or newer). No Windows or Linux build.
- Not a universal OAuth broker. Connectors are API-key-first: you bring a scoped token or API key for each provider you connect.
- Local enforcement is best-effort by design. AMK defends your keys against being uploaded to the cloud, scattered across agent configs, or read directly by agents. It does not claim to stop malware already running on your Mac as you — no local application can honestly promise that. See Trust & custody for the full threat model.
- Not open source. AMK is a commercial, closed-source app with a one-time license.
Honest guidance
If you are a developer who is happy running containers and wants free open source, Infisical or ToolHive may fit you better. If your company already standardizes on 1Password's enterprise plans, its agent-access features may be the natural path. If you want hosted integrations managed for you and don't mind a cloud service holding or proxying credentials, a cloud broker is the convenient option.
AMK's lane is narrower on purpose: a native Mac app for individuals, one-time pricing, and your provider keys staying in an encrypted vault on your own machine while agents get scoped keys you can watch and revoke. If that is what you want, see pricing or download the free tier — the security overview and getting-started guide cover the rest.
