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"List of Easy-to-Use Free MCP Servers for Proof of Concept Development" matching MCP servers:

  • 5arz Proof-of-Human by LumiRx

    5arz Proof-of-Humanofficial

    LumiRx
    A
    license
    -
    quality
    C
    maintenance
    Enables agents to prove and verify that a real, unique human performed an action, issuing machine-readable signed credentials with public verification.
    Apache 2.0

  • gmail-mcp-send-to-list-only

    bajor
    F
    license
    A
    quality
    A
    maintenance
    An MCP server that sends plain-text Gmail messages only to a predefined allowlist, using generated recipient IDs instead of email addresses to enforce security.
    2
    1

  • wg-easy-mcp

    ni-c
    A
    license
    A
    quality
    A
    maintenance
    MCP server for administering wg-easy (WireGuard Easy) instances, enabling listing, creating, updating, enabling/disabling, and deleting WireGuard clients, fetching configs and QR codes, and inspecting server status via the wg-easy REST API.
    11
    0
    MIT

  • credential-free

    skutry
    A
    license
    -
    quality
    C
    maintenance
    Scans code for exposed secrets, API keys, tokens, and credentials across 69 patterns covering cloud services, AI platforms, payment providers, authentication services, and databases.
    MIT

  • Proof Layer MCP

    World-999-Labs
    A
    license
    -
    quality
    D
    maintenance
    Provides cryptographic governance receipts for AI agents, enabling pre-execution evaluation and signed verdicts (EXECUTE/BLOCK/REVIEW/SHADOW) with offline-verifiable audit trails.
    MIT

  • codeql-development-mcp-server

    advanced-security
    F
    license
    -
    quality
    A
    maintenance
    Enables AI-assisted development of CodeQL queries for security analysis through the Model Context Protocol. Provides tools for compiling, testing, and executing CodeQL queries across multiple programming languages.
    31
  • deeptempo-mcp-servers by DeepTempo

    deeptempo-mcp-serversofficial

    DeepTempo
    F
    license
    -
    quality
    D
    maintenance
    Provides tools for DeepTempo AI SOC including findings and case management, investigation workflow orchestration, action approval workflows, and MITRE ATT&CK layer generation.
    2

  • Fingerprint MCP Servers

    JuroUhlar
    A
    license
    -
    quality
    D
    maintenance
    Provides MCP servers for AI assistants to interact with Fingerprint's Server API for visitor identification events and Management API for workspace configuration.
    1
    MIT

  • ceco proof gate

    RileyBetts
    F
    license
    -
    quality
    C
    maintenance
    MCP server that evaluates agent actions against a Policy State Machine, emits a tamper-evident audit trail, and dispatches approved transitions to internal or federated handlers.

  • MCP Server for OSCAL

    awslabs
    A
    license
    A
    quality
    C
    maintenance
    Provides AI assistants with specialized tools to interact with NIST's Open Security Controls Assessment Language (OSCAL) framework. It enables agents to retrieve schemas, explore models, and generate valid OSCAL documentation for security compliance automation.
    40
    51
    Apache 2.0
  • mcp-identity-proxy-for-aws by aws-samples

    mcp-identity-proxy-for-awsofficial

    aws-samples
    A
    license
    -
    quality
    A
    maintenance
    A client-side MCP proxy that injects OAuth 2.0 bearer tokens or API keys into MCP requests, enabling MCP clients to connect to OAuth/API-key-protected MCP servers like Amazon Bedrock AgentCore Gateway. It automatically fetches and refreshes credentials using AgentCore Identity or static values.
    MIT No Attribution