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MCP Armor

github.comInfrastructure

PulseGate's liveness check found it on 24 Sep 2026; it has been in the index since 24 Sep 2026. How this is checked

MCP Armor is an open-source Rust sidecar for Model Context Protocol servers. It scans tool calls for prompt injection, validates Ed25519 manifest signatures, and blocks marketplace-poisoning vectors for developers and security teams.

Inferred · not functionally tested

Open SourceCLISelf-hosted
MCP Armor preview
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Overview

6 features

Purpose: Protecting Model Context Protocol servers from prompt injection, malicious tool calls, and poisoned marketplace manifests.

Inferred · not functionally tested

Audience: developers and security teams operating MCP servers

Inferred · not functionally tested

Functions: monitoring

Inferred · not functionally tested

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 · deployment: cli, self_hosted

Constraint provenance is unknown; confirm requirements with the publisher.

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

MCP Armor sits in PulseGate's AI & LLM security category. Inferred · not functionally tested: It focuses on protecting Model Context Protocol servers from prompt injection, malicious tool calls, and poisoned marketplace manifests. Inferred · not functionally tested: It is built as an open-source project for developers and security teams operating MCP servers. Basis unknown · not verified: The project is open source (Open Source). Basis unknown · not verified: It runs on the command line, and it can be self-hosted.

It is developed by studiomeyer-io. Inferred · not functionally tested: Among its 6 catalogued features are prompt injection scanning, tool call validation, and ed25519 signatures. 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

  • Prompt injection scanning
  • Tool call validation
  • Ed25519 signatures
  • Manifest validation
  • Marketplace poisoning defense
  • Rust sidecar

Topics: Inferred · not functionally tested

Tags
mcp-securityprompt-injection-defenserust-sidecarmanifest-signingtool-call-scanning

JSON profile · Text profile · Access guide

Built with & integrations

Connectors
MCP
Runs on
CLISelf-hosted

Trust & compliance

License
Open Source
Public signals
HTTPSOpen SourceFree tier

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed21 Sep · 18:58 UTC
    mcp-armor seen via MCP Registry (official)
    Source: MCP Registry (official) · Open

Frequently asked questions about MCP Armor

What is MCP Armor?
Inferred · not functionally tested: MCP Armor focuses on protecting Model Context Protocol servers from prompt injection, malicious tool calls, and poisoned marketplace manifests. It is catalogued under AI & LLM security on PulseGate.
Who is MCP Armor for?
Inferred · not functionally tested: MCP Armor is an open-source project built for developers and security teams operating MCP servers.
Is MCP Armor free?
Basis unknown · not verified: Yes — MCP Armor is open source under the Open Source license and free to use.
What platforms does MCP Armor run on?
Basis unknown · not verified: MCP Armor runs on the command line. It can also be self-hosted.
Is MCP Armor still active?
PulseGate's liveness check found it on 24 Sep 2026.
What are alternatives to MCP Armor?
Similar projects tracked by PulseGate include mcp-toolguard, MCPVault, and mcp-safeguard.mcp-toolguardMCPVaultmcp-safeguard
Who develops MCP Armor?
MCP Armor is developed by studiomeyer-io.
Is MCP Armor open source?
Basis unknown · not verified: Yes — MCP Armor is open source under the Open Source license.

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