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

An MCP Odoo tools connector/plugin for Claude Cowork and Claude Code. It runs from 10 to 19 and helps make the connection smooth. You just need to downloaded from the marketplace and run: "/odoo-tools:odoo-setup-mcp".

Provides interactive tools to explore AFAS customer data and employee leave information, including bubble charts, leave balance reports, and detailed leave cards.

Provides MCP tools for searching, reading, and drafting Gmail emails, as well as querying SAP OData endpoints with safe read operations and mock mode.

Gives AI assistants direct access to Microsoft Dynamics 365 Business Central via the native WebSocket protocol, replacing OData, APIs, and browser automation. Enables page navigation, data reading/writing, actions, searches, and report execution.

Enables local LLMs to query SAP S/4HANA OData services through typed tools for business partners, sales orders, and purchase orders, returning cleaned, compact data and allowing raw read-only access to other endpoints.

Read-only MCP server for Dynamics 365 Business Central, enabling AI clients to query live ERP data like customers, items, orders, and invoices via GET-only APIs with dual authentication and stdio/HTTP transports.

MCP server for LawPracticeZA, South African legal practice software, providing tools to manage clients, matters, work-in-progress fees, billing, and accounting via the LawPracticeZA API.

Enables AI assistants to interact with Workadu data through natural language, managing orders, customers, services, invoices, payments, assets, and asset movements.

Unified MCP server providing business data APIs for Indian users, orders, and business metrics, deployable via Vercel.

Enables AI agents to interact with 1С:Enterprise and BAS ERP systems through REST and HTTP services, providing tools for searching catalogs, creating documents, and querying stock balances.

An MCP server for Dolibarr ERP/CRM that lets Claude or any MCP-compatible client read and manage thirdparties, commercial proposals, contracts, and invoices directly.

Enables AI assistants to integrate with SAP systems via OData REST APIs for querying entity sets, performing CRUD operations, and executing function imports. It features automatic service discovery, CSRF token management, and smart connection handling without requiring the SAP RFC SDK.

MCP server that exposes MAYO Apollo HRM platform's Foundation, Attendance, and Payroll APIs as AI-callable tools, enabling natural language queries for employee profiles, attendance summaries, and payroll reports.

This MCP server provides comprehensive access to the Mews hospitality platform API, covering customer and company management, reservation operations, financial transactions, account management, configuration settings, and services inventory. It implements the core functionality needed for hospitalit

Enables AI agents to read and operate ERPNext/Frappe systems through HTTP APIs, with safe-mode approval for sensitive operations and complete storage of large request and response payloads.

Transforms SAP S/4HANA or ECC systems into conversational AI interfaces by exposing all OData services as dynamic MCP tools. Enables natural language interactions with ERP data including querying, creating, updating, and deleting entities through SAP BTP integration.

Enables natural language interaction with UKG Pro Workforce Management APIs. It detects intent, resolves missing inputs, hydrates related objects, and returns complete, validated operational answers across scheduling, timekeeping, attendance, and more.

Enables interaction with SAP ABAP systems via ADT APIs, allowing management of ABAP objects, transport requests, and code analysis through MCP clients.

Enables interaction with Oracle Fusion Cloud HCM REST APIs, providing tools for managing workers, absences, payroll, talent, and other HCM data with configurable write approvals and multiple transport modes.

Enables interaction with SAP ABAP systems through ADT APIs, allowing management of ABAP objects, transport requests, and code analysis via natural language.