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741,650 tools. Updated 2026-11-04 07:43

"Services or tools available for free without requiring an API key" matching MCP tools:

  • Search available API tools by keyword. Returns matching tools with full parameter schemas. Supports synonym matching and toolset filtering.
    MIT
  • Search Shodan's indexed services with native filters and retrieve up to 100 results per page. Requires a Shodan API key; consumes query credits.
    MIT
  • Self-register as an AI agent to receive an API key for TuringWell write operations. Store the key securely; this unauthenticated first step enables posting questions, answers, and outcomes.
    MIT
  • Query the remaining prepaid credit balance and active status for a FranchiseData Pro API key before running batch paid queries to confirm sufficient funds.
    MIT
  • Permanently revoke and delete a RawTree API key by UUID or full API key value. Use to remove compromised or unused keys; services using the key lose access.
    MIT
    Destructive
  • Retrieves the authenticated account's available Sonilo services, limits, upload size, discount factor, and trial usage so you can verify endpoints and free-trial allowances before calling tools.
    MIT

Matching MCP Servers

  • A
    license
    A
    quality
    C
    maintenance
    Provides 13 offline SEO and marketing tools to any MCP client, covering ad metric calculators, text and heading analysis, keyword density, and generators for meta tags, Open Graph, hreflang, schema markup, XML sitemaps, and robots.txt. Everything runs locally with no account, API key, or network calls.
    13
    6 npm
    MIT
  • A
    license
    Not graded
    quality
    B
    maintenance
    Enables AI agents to call 16 small, deterministic, read-only tools over a free, no-auth remote streamable HTTP MCP endpoint, covering business idea scoring, price headroom, hotel OTA commissions, open-source SaaS swaps, ads policy notice risk, App Store 4.2 prechecks, and Japan trip planning. Each tool is also exposed as a plain JSON API with OpenAPI docs.
    MIT

Matching MCP Connectors

  • 21 free no-auth tools: pitch roast, Kyushu discount, Japan visa fee, luggage, tax-free.

  • Free AI test helpers: injection inputs, OWASP mapping, release plans, response and tool-call packs.

  • Learn the current mode, available tools, and recommended first prompt. Find out how to move from demo to live—no API key required.
    MIT
  • Check whether the Trading Volatility MCP session is authenticated with an API key for full access or running in demo mode with limited tickers. Returns 'keyed' or 'demo' without exposing the key.
    MIT
  • Discover the SignalScope methodology: how signals are harvested, scored, filtered, and staged. Free endpoint without an API key.
    MIT
  • Verify the 6-digit OTP to activate your free Tokonomix account, saving your API key locally and returning your starting credit balance so all other tools work without configuration.
    MIT
  • List available cities with slugs, API capabilities, and property counts to identify which cities are supported and what services each offers.
    MIT
  • Fetch one FlightByte documentation page as Markdown from a docs path or search result URL to look up specific API details without an API key.
    MIT
  • Verify whether the MCP uses the default API origin, has an API key, and enables file uploads, without exposing the key or custom origin.
    MIT
  • Discover available API toolsets with descriptions, tool counts, and examples to identify relevant tools before searching.
    MIT
  • List available webhook, mailbox, and A2A targets for the current API key. Use this before sending events to see which destinations are registered, without creating or changing anything.
    MIT
  • List all Easyparser operations with parameters, credit costs, and examples without an API key to identify the right Amazon data tool and supported marketplaces.
    MIT
  • Find games and retrieve their domain names, required for all game-scoped tools. No API key needed.
    Creative Commons Attribution Non Commercial 4.0 International