LocalFree

Arc Gate MCP server

9hannahnine-jpg/arc-gate-mcp

Runtime governance for MCP tool calls that blocks prompt injection and capability abuse before tool results reach the agent.

2 GitHub stars
Source code

Install Arc Gate in Claude Code

This server doesn't publish a package to a registry, so follow the install steps in its README. Once it runs, register it with Claude Code:

Claude Code
claude mcp add arc-gate -- <command to start the server>

Frequently asked questions

What does the Arc Gate MCP server do?

Runtime governance for MCP tool calls that blocks prompt injection and capability abuse before tool results reach the agent.

Is the Arc Gate MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Arc Gate run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Arc Gate to Claude Code?

Follow the install steps in the project's README at https://github.com/9hannahnine-jpg/arc-gate-mcp, then register it with "claude mcp add".

More security & identity MCP servers

View all

Bytesmith

2

laszlopere/mcp-bytesmith

Offline byte toolbox: hex/Base64/Base58 encoding, cryptographic and CRC hashing, base conversion, secure tokens, plus optional Ethereum/EVM tools.

LocalFreePython

AgentValet

2

AgentValet/AgentValet

Identity and credential broker for MCP servers: issues scoped, short-lived credentials per agent, with audit logging and human approval gates.

LocalAccount neededTypeScript

Fetch Guard

2

Erodenn/fetch-guard

URL fetcher and HTML-to-Markdown converter with layered prompt injection defense: hidden-element sanitization, risk scanning and content boundary wrapping.

LocalFreePython

Agentdevx SDK

2

mirajmahmudul/agentdevx-sdk

Identity and credential gateway for agents: Ed25519 identity, encrypted credential vault, OPA policies with audit logging, per-agent memory and web scraping.

LocalAccount neededTypeScript

Horizon Shield

2

ogasurfproject-jpg/horizon-shield/hs-jidec-mcp

Verify AI-agent evidence records on the Bitcoin-anchored JIDEC ledger: fetch record bytes, recompute the SHA-256 and check the OpenTimestamps timestamp.

LocalAccount neededTypeScript

MINT Protocol

2

FoundryNet/mint-mcp

MINT Protocol work attestation for agents: cryptographically attest, verify, rate and discover agent work to build portable on-chain reputation.

RemoteAccount neededPython