"Free APIs and services without commercial fees" matching MCP servers:

Enables AI agents to search, filter, and monitor curated AI model API free credits and low-cost token promotions through eight tools, four resources, and three prompts — including finding deals expiring soon, checking eligibility and blocked conditions, and producing daily briefs.

Enables searching and retrieving Korean commercial registration precedents (617 cases) from the Supreme Court's portal for legal practice.

Enables AI agents to produce video commercials from product descriptions via a multi-stage pipeline with human-in-the-loop approval gates and explicit spend authorization.

Enables users to calculate seller fees, net payouts, and break-even prices across Gumroad, Stripe, PayPal, and Etsy, and compare platforms for a given sale price.

Enables AI assistants to search and download free, royalty-free BGM and sound effects from Conte de Fées, including 173 tracks and 189 effects, with commercial use allowed and no account or API key required.

Enables Claude to discover and invoke Brazilian government APIs (public, Serpro, and Conecta gov.br) through a catalog-driven gateway that searches a YAML catalog of 116 APIs, loads OpenAPI specs on demand, and calls endpoints with credentials resolved per entry. It provides five generic tools for search, listing, describing, calling, and checking credential readiness, keeping client context small instead of exposing one tool per endpoint.

Public APIs Discovery for Humans & Agents

Enables users to search and read verbatim passages from Terry Bouricius's book 'Democracy Without Politicians', honoring the author's request to display his actual words rather than AI summaries.

MCP server for Crypto APIs Blockchain Fees product, providing fee recommendations and gas estimates for UTXO, EVM, and XRP blockchains.

An MCP server that gives AI coding agents real-time access to the public-apis dataset, enabling search, live probing, and code snippet generation for 1,500+ free public APIs.

Enables semantic search and discovery of free public APIs from an extensive catalog. Provides embedding-based search over API names and descriptions, plus detailed API information retrieval.

Enables AI assistants to read web pages as clean Markdown, build link previews and Open Graph share images, and extract structured data from job postings and resumes (including scoring a resume against a job). It also computes win probabilities and player rankings with Elo, Glicko-2, or OpenSkill across 1v1, team, and free-for-all formats.

Enables querying eight keyless French and international public APIs for addresses, communes, holidays, school calendars, BODACC announcements, European VAT, and exchange rates through read-only MCP tools.

MCP server exposing all major Swiss official public APIs as native tools for any MCP-compatible AI agent.

Scans code for exposed secrets, API keys, tokens, and credentials across 69 patterns covering cloud services, AI platforms, payment providers, authentication services, and databases.

Enables checking whether a given US patent is still in force or has lapsed, by returning every recorded USPTO fee event, a computed status, and 4th/8th/12th-year fee-window details. Also supports counting and sampling fee events such as expirations for non-payment across a date range or patent-number prefix.

Enables assistants and agents to query calendar availability from Google, Outlook, iCloud, or ICS feeds and return free time slots for specified days, date ranges, or pasted messages. It exposes read-only tools for finding availability and checking calendar readability without exposing calendar addresses.

Enables users to retrieve simulated visitor events, manage accessibility and response preferences, propose and human-confirm replies, correct visitor classifications, and dismiss events through seven MCP tools.

Multi-tool MCP server for AI agents with 29 tools across web scraping, SEO analysis, screenshot and PDF generation, domain intelligence, content extraction, multi-chain EVM blockchain queries, and security toolkit. Free tier available with no auth required.

Keyless directory of 2,500+ public APIs and their OpenAPI specs, enabling AI agents to discover and interact with APIs.

Enables luxury fashion commercial teams to query governed deterministic analytics tools for sell-through, markdown risk, wholesale health, comp-store sales, return-rate root cause, and channel P&L from synthetic DTC, retail, and wholesale data.

A thin MCP server that wraps provenance-receipts and quality-gate services as tools, enabling AI agents to certify content origin and score quality via Ed25519-signed receipts.

MCP server providing official US economic data including CPI inflation, famous prices, national debt, and Treasury interest rates. Enables AI agents to query historical and latest economic statistics via natural language.

MCP server that exposes Avangenio's service status by fetching and parsing status.avangenio.com/data.txt into normalized JSON.

Enables AI assistants to search, read, and cite Title 38 of the Code of Federal Regulations from a locally built SQLite full-text index, using read-only tools for ranked regulation search, full section retrieval, hierarchy browsing, part listing, and index freshness/health checks. All queries run offline against the local index, returning ranked hits with citations, snippets, cross-references, and staleness notices.

Enables interaction with Adobe Commerce Catalog Services to retrieve product variants, price overrides, category permissions, and environment details via MCP.

Enables deploying pre-built AI agent blueprints for RFx procurement and employee onboarding, with no signup or API key required.

Discover audio and LLM services, compare seven voices, and check prices for free. Generate speech, transcribe audio and request LLM text with optional capped USDC payments on Base; voice-cloning requirements are also available.

22 MCP tools for AI agents: crypto prices and trading signals (53 coins), stock prices and company financials, forex rates and conversion, and web scraping with AI summaries. All powered by x402 USDC micropayments on Base. $0.01-$0.25 per request.

Free and open-source MCP server for managing n8n workflows, executions, and tags via n8n's API. Enables workflow creation, activation, debugging, and deletion from any MCP client.