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Best Productivity ResourcesBy Shushant LakhyaniVerified creator

AI Tool

preloop

The open-source AI agent control plane: MCP firewall, model gateway with budgets, human approvals and runtime observability.

Visit preloop4.5

  • Rating

    4.5 / 5

  • Pricing

    Free

  • Difficulty

    Advanced

  • Works on

    Cross-Platform, Web

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What is preloop?

preloop is an open-source control plane for AI agents. It adds an MCP firewall, a model gateway with budgets, human-in-the-loop approvals and runtime observability so teams can run agents in production safely.

Third-party open-source projects. We are not affiliated with their authors; repositories are provided as-is by their maintainers. Review each project's license, code and security before installing. See our Disclaimer.

Pros: what preloop does well

  • Budgets and approvals for agent runs
  • MCP firewall for tool safety
  • Runtime observability built in

Cons: where it falls short

  • Infrastructure to deploy and maintain
  • Overkill for hobby agents
  • Early ecosystem

Who preloop is for

Teams putting AI agents into production who need guardrails, budgets and auditability.

Who can skip it

Individual users running a single local agent.

preloop alternatives

Not sold on preloop? These do a similar job, and each card says what it has in common.

All AI Productivity resources

AgentGlass

Focus: monitoring and cost tracking. Shares ai agents and observability with preloop. A web app, not an AI tool. Adds macOS and Linux. Rated 4.4 (preloop: 4.5).

Web AppFreeWeb, macOS
4.4Visit

takt

Focus: coordination, multi-agent and human in the loop. Shares ai agents and open source with preloop. Rated 4.4 (preloop: 4.5).

AI ToolFreeCross-Platform
4.4Visit

Uber ADR

Focus: ai agent security and threat detection. Shares observability and mcp with preloop. Adds macOS, Windows and Linux. Rated 4.4 (preloop: 4.5).

AI ToolFreemacOS, Windows
4.4Visit

First Tree

Focus: orchestration, github and routing. Shares ai agents and open source with preloop. Rated 4.3 (preloop: 4.5).

AI ToolFreeWeb
4.3Visit

hol-guard

Focus: security, prompt injection and guardrails. Shares ai agents and mcp with preloop. Adds macOS, Windows and Linux. Rated 4.7 (preloop: 4.5).

AI ToolFreemacOS, Windows
4.7Visit

Free alternatives to preloop

Want to spend nothing? These free picks cover similar ground.

toolport

Focus: tools, local first and token savings. Shares mcp and gateway with preloop. Adds macOS, Windows and Linux. Same 4.5 rating.

AI ToolFreemacOS, Windows
4.5Visit

Kiln

Focus: 3d printing, hardware and maker. Shares mcp and ai agents with preloop. Rated 4.4 (preloop: 4.5).

AI ToolFreeCross-Platform
4.4Visit

Open Supermarkets

Focus: cli, supermarkets and shopping. Shares mcp and ai agents with preloop. Adds macOS, Windows and Linux. Rated 4.4 (preloop: 4.5).

AI ToolFreemacOS, Windows
4.4Visit

OpenDots

Focus: agent template, copilotkit and human in the loop. Shares ai agents and mcp with preloop. A framework, not an AI tool. Rated 4.3 (preloop: 4.5).

FrameworkFreeWeb
4.3Visit

Opendray

Focus: self-hosted, claude code and codex. Shares ai agents and gateway with preloop. Rated 4.3 (preloop: 4.5).

AI ToolFreeWeb, Cross-Platform
4.3Visit

pond

Focus: session storage, search and history. Shares ai agents and open source with preloop. Adds macOS, Windows and Linux. Rated 4.3 (preloop: 4.5).

AI ToolFreemacOS, Windows
4.3Visit
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