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"Free things, offers, and resources" matching MCP servers:

  • A
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    A
    quality
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    maintenance
    Domain security reconnaissance for AI agents — 13 tools (DNS+DNSSEC, SSL/TLS, HTTP security headers, SPF/DKIM/DMARC email auth, port scan, ASN, RDAP/WHOIS) plus a one-shot security_scan returning a 0–100 Health Score (A–F). Free, no API key.
    13
    43
    1
    MIT
  • A
    license
    A
    quality
    C
    maintenance
    A minimal, dependency-free MCP server that gives AI agents three real, read-only security-orchestration tools: cve_lookup, shodan_host_lookup, and nuclei_scan.
    3
    MIT
  • A
    license
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    quality
    C
    maintenance
    Provides local, dependency-free security scanning tools for LLM configurations, prompts, RAG sources, and more, enabling AI coding agents to detect prompt injections and other vulnerabilities without external network access.
    MIT
  • F
    license
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    quality
    A
    maintenance
    Gorgon Scout is a Windows web-application and API security scanner (DAST). This connector exposes it as MCP tools, so your AI assistant can record a target you are authorised to test, run the scan, stream findings, and produce a report. Capture needs no proxy or certificate setup, and it intercepts HTTP/1.1, HTTP/2, and HTTP/3 (QUIC). Works with the free Claude Desktop plan.
  • A
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    quality
    C
    maintenance
    Enables LLM clients like Claude to interact with IDA Pro for binary analysis, decompilation, cross-references, patching, and more via 41 MCP tools, 8 resources, and 7 guided prompts.
    46
    MIT
  • A
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    quality
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    maintenance
    An MCP server providing 15 OSINT tools over free, public sources for AI agents, enabling domain reconnaissance, subdomain discovery, DNS lookups, host profiling, CVE search, and more without API keys.
    MIT
  • A
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    quality
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    maintenance
    Offline, dependency-free transport-layer hardening auditor for MCP Streamable HTTP endpoints, probing for DNS rebinding, CORS, session-ID, cleartext, and protocol conformance defects with a severity-weighted score and CI gate.
    MIT
  • A
    license
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    quality
    A
    maintenance
    Real security scanners for AI coding agents — SAST (441 rules), secret detection (419+ patterns), dependency CVEs (OSV.dev), MCP/skill vetting, MITRE ATT&CK. Open-source, Rust, free
    18
    Apache 2.0
  • A
    license
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    quality
    C
    maintenance
    Security auditor for MCP servers that enumerates tools, resources, and prompts, scans for injection patterns, classifies risk levels, and produces a scored report (0-100, grades A-F).
    2
    MIT
  • A
    license
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    quality
    C
    maintenance
    An MCP server that measures how effectively hashing tool definitions detects unauthorized changes, evaluating 20 policies across field sets and canonicalization methods. It demonstrates that approval-dialog-based pins miss most attacks, with structural/semantic normalization being free but text folding trading detection for fewer false alarms.
    MIT
  • A
    license
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    quality
    B
    maintenance
    Passive security scanner that audits a running MCP server against the OWASP MCP Top 10 and grades it A-F. Read-only static analysis of the advertised tools, prompts and resources with console/JSON/SARIF output, and it also runs as an MCP server itself.
    44
    MIT
  • A
    license
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    quality
    C
    maintenance
    Security scanner for MCP servers. Detects prompt injection, command injection, auth bypass, and excessive permissions across tools, resources, and prompts.
    26
    2
    MIT
  • A
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    quality
    C
    maintenance
    This MCP server offers 72 typed tools for Kali Linux pentesting, including recon, web, AD, cracking, C2, remote desktop, and tunneling. It provides structured JSON output, persistent session state, and auto-populated findings for streamlined workflows.
    MIT
  • A
    license
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    quality
    D
    maintenance
    Integrates ProjectDiscovery's Katana web crawler with Claude Desktop, enabling users to crawl websites, discover endpoints and hidden resources, extract JavaScript files, and perform reconnaissance with customizable depth, scope, and filtering options.
    MIT