AgentIndex icon
AgentIndex
heddle logo
heddle
★ 14
vs
mcp-hangar logo
mcp-hangar
★ 18

heddle vs mcp-hangar

heddle: Heddle provides a policy-and-trust layer for Model Context Protocol (MCP) tool servers, enabling secure and declarative exposure of APIs as AI agent tools. It offers built-in security features such as trust enforcement, credential brokering, and tamper-evident audit logging, alongside containerized sandboxing and AI-powered configuration generation.; mcp-hangar: 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.

01

TL;DR

heddle logo
heddleSecurity & Safety · ★ 14

Securely Exposing APIs to LLMs

Read heddle full review →
mcp-hangar logo
mcp-hangarSecurity & Safety · ★ 18

Preventing unauthorized or malicious changes to LLM tool descriptions and behavior.

Read mcp-hangar full review →
02

Side-by-Side Comparison

Field
heddle logoheddle
mcp-hangar logomcp-hangar
Category
Security & Safety
Security & Safety
Stars
★ 14
★ 18
License
MIT
MIT
Install Command
git clone https://github.com/goweft/heddle.git && cd heddle && python -m venv venv && source venv/bin/activate && pip install -e ".[dev]"
pip install mcp-hangar && mcp-hangar init -y
Updated
1mo ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
AI Agent Security, Policy Enforcement, Declarative Configuration
Policy Enforcement, Admission Control, Egress Control
03

Features

heddle logoheddle
01Declarative YAML Tool Configuration
02Comprehensive Security Controls
03AI-Powered Configuration Generation
04Containerized Sandboxing
mcp-hangar logomcp-hangar
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
04

Use Cases

heddle logoheddle
↳Securely Exposing APIs to LLMs
↳Building AI Agent Tool Meshes
↳Automating Daily Operations with AI
↳Managing GPU Resources for LLMs
mcp-hangar logomcp-hangar
↳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.
FAQ

FAQ

What is the difference between heddle and mcp-hangar?
Both heddle and mcp-hangar are in the Security & Safety category. heddle has 14 stars, while mcp-hangar has 18 stars.
Which is better, heddle or mcp-hangar?
The best choice depends on your use case. Choose heddle if Securely Exposing APIs to LLMs, and mcp-hangar if Preventing unauthorized or malicious changes to LLM tool descriptions and behavior..
Is heddle free or open source?
Yes, heddle is open source on GitHub (MIT).
Is mcp-hangar free or open source?
Yes, mcp-hangar is open source on GitHub (MIT).
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