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mcp-hangar
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mcp-hangar

Active·★ 18·MIT·Updated 2026-10-22

MCP Hangar is a self-hosted policy enforcement plane for your MCP server fleet, providing deterministic admission and egress policies, attributable audit, and SIEM export. It ensures tool integrity by enforcing tool-schema digest pinning, preventing unauthorized changes to tool descriptions.

#Policy Enforcement#Admission Control#Egress Control#Audit Logging#RBAC#Tool Schema Pinning#LLM Governance
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Guides
#Self-hosted
$ Install
$ pip install mcp-hangar && mcp-hangar init -y
↗ Visit site★ GitHub
01

Features

01L7 egress policy for LLM tools
02Tool-schema digest pinning to prevent unauthorized tool changes
03Auth & RBAC for secure tool access
04Attributable audit records for SIEM export
05Human-in-the-loop approvals for critical operations
02

Compatibility

Python
Runtime
Verified via docs
03

Quick start

1
$ pip install mcp-hangar
2
$ mcp-hangar init -y
04

Use cases

↳Preventing unauthorized or malicious changes to LLM tool descriptions and behavior.
↳Implementing granular access control and permissions for different users or tenants accessing LLM tools.
↳Maintaining an attributable audit trail of all LLM tool interactions for compliance and security monitoring.
↳Gating sensitive or high-impact LLM tool operations with a human review and approval process.
05

Alternatives

⚡Top VS:
VSheddle★14→VSJanuScope★32→VShelm-ai-kernel★60→

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On this page
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See all alternatives →
mcp-hangar /
mcp-hangar
↗

MCP policy enforcement plane — deterministic policy on every Model Context Protocol call: identity, RFC 8707 audience binding, tool schema digest pinning, full audit trail. Python, self-hosted, MIT.

18MIT
Last commit1d ago
StatusActive
CategorySecurity & Safety
Links
Documentation↗Discussion↗Issues↗Releases↗
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