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WARDEN

github.comInfrastructure

PulseGate's liveness check found it on 5 Oct 2026; it has been in the index since 4 Sep 2026. How this is checked

WARDEN is a zero-dependency TypeScript library that acts as a security firewall for Model Context Protocol servers. It statically scans tool definitions, checks signed threat feeds, and validates origin and tool-definition pins before tools are exposed to AI models.

Inferred · not functionally tested

Open SourceWebCLISelf-hosted
WARDEN preview
Visit github.com

Overview

6 features

Purpose: Preventing malicious or altered MCP tool definitions from reaching AI models.

Inferred · not functionally tested

Audience: developers building MCP servers and AI agent systems

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: indicated (inferred, not tested) · CLI: indicated (inferred, not tested) · Self-hosting: indicated (inferred, not tested)

Recorded constraints: pricing: open_source · license: Open Source · platforms: CLI, WEB · deployment: browser, cli, self_hosted

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: github.com. These links do not verify the individual claims.

WARDEN sits in PulseGate's AI & LLM security category. Inferred · not functionally tested: It focuses on preventing malicious or altered MCP tool definitions from reaching AI models. Inferred · not functionally tested: WARDEN is an open-source project aimed at developers building MCP servers and AI agent systems. Basis unknown · not verified: WARDEN is open source under the Open Source license. Basis unknown · not verified: It ships for the web and the command line, and it can be self-hosted.

alexar76 builds and maintains WARDEN. Inferred · not functionally tested: Key capabilities include static rule scanning, signed threat feed, and origin pinning. Basis unknown · not verified: Catalogued interfaces include an MCP server.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Static rule scanning
  • Signed threat feed
  • Origin pinning
  • Tool-definition pinning
  • MCP validation
  • Zero dependencies

Topics: Inferred · not functionally tested

Tags
mcp-securitytool-definition-scanningthreat-feed-validationorigin-pinning
AI capabilities
TextStructured
Inference: Local

JSON profile · Text profile · Access guide

Built with & integrations

Connectors
MCP
Runs on
BrowserCLISelf-hosted

Trust & compliance

License
Open Source
Public signals
HTTPSOpen SourceFree tier

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed4 Sep · 22:05 UTC
    WARDEN — MCP Security Firewall seen via MCP Registry (official)
    Source: MCP Registry (official) · Open

Frequently asked questions about WARDEN

What does WARDEN do?
Inferred · not functionally tested: WARDEN focuses on preventing malicious or altered MCP tool definitions from reaching AI models. It is catalogued under AI & LLM security on PulseGate.
Who should use WARDEN?
Inferred · not functionally tested: WARDEN is an open-source project built for developers building MCP servers and AI agent systems.
Does WARDEN have a free plan?
Basis unknown · not verified: Yes — WARDEN is open source under the Open Source license and free to use.
What platforms does WARDEN run on?
Basis unknown · not verified: WARDEN runs on the web and the command line. It can also be self-hosted.
Is WARDEN still active?
PulseGate's liveness check found it on 5 Oct 2026.
What projects are similar to WARDEN?
Similar projects tracked by PulseGate include configwarden, Wardline Docs, and PortWarden.configwardenWardline DocsPortWarden
Who makes WARDEN?
WARDEN is developed by alexar76.
Is WARDEN open source?
Basis unknown · not verified: Yes — WARDEN is open source under the Open Source license.

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