Is Intercept open source?

Yes, licensed under Apache-2.0.

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Intercept

Active·★ 32·Apache-2.0·Updated 2026-04-15

Intercept is a deterministic enforcement proxy for the Model Context Protocol (MCP). It sits between an AI agent and an MCP server, evaluating every tools/call request against YAML-defined policies. Violating calls are blocked at the transport layer before reaching the upstream server.

#agent-framework#agentic-ai#agentic-workflow#ai-agents#ai-governance#ai-safety#claude

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#control-plane

$ Install

$ npm install -g @policylayer/intercept

↗ Visit site ★ GitHub

Features

01Block tool calls

02Validate arguments

03Rate limit

04Track spend

05Hot reload policies

Compatibility

Node.js

Verified via docs

Quick start

$ npm install -g @policylayer/intercept

Use cases

↳Prevent accidental refunds or deletions

↳Control spending on LLM tool calls

↳Enforce compliance by blocking unauthorized actions

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PolicyLayer /

Intercept

↗

The enforcement layer for AI agents. Intercept enforces hard, deterministic limits on what agents can do at the MCP transport layer — before execution.

32Apache-2.0

Last commit6mo ago

StatusActive

CategorySecurity & Safety

Links

Documentation↗Discussion↗Issues↗Releases↗

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