"Understanding OAuth 2.0 Protocol" matching MCP servers:

MCP server for TracePass — the EU Digital Product Passport platform. Create products, build and audit DPPs, set economic-operator parties, and read/capture GS1 EPCIS 2.0 supply-chain events.

Enables LLM agents to manage QuickBooks Online invoices, customers, and payments via typed tools with OAuth 2.1 authentication, rate limiting, and retries, plus read-only resources for company and receivables summaries.

MCP server for the bexio API, enabling interaction with contacts, sales, accounting, projects, and more through 35 tools. Supports both PAT and OAuth authentication with read-only mode and tool group filtering.

Enables MCP-compatible clients to securely access and query NetSuite data using OAuth 2.0 with PKCE, including SuiteQL, reports, saved searches, and record operations.

A Model Context Protocol (MCP) server providing access to NetSuite data through OAuth 2.0 with PKCE authentication. Works seamlessly with any MCP-compatible client including Claude Code, Cursor IDE, and Gemini CLI.

Enables AI agents to read and create customers, jobs, estimates, invoices, calendar tasks, equipment, technicians, and reference data through the documented Service Fusion REST API, handling OAuth 2.0 and pagination automatically.

Enables natural language interaction with Xero accounting data, managing contacts, invoices, and accounts across multiple organisations via OAuth2.

Enables AI assistants to securely interact with Salesforce CRM data through SOQL queries, CRUD operations, and metadata exploration. Supports connecting to Salesforce objects like Accounts, Contacts, and Opportunities via OAuth 2.0 authentication.

Enables querying ABAP programs, classes, function modules, and other objects from SAP systems with OAuth 2.0 authentication.

Enables AI assistants to interact with freee accounting software API for managing companies, transactions, invoices, and reports via OAuth authentication.

MCP server for 1C:Enterprise ERP with 35 tools: metadata inspection, document CRUD, register queries, and BSP integration. First MCP server for Russian ERP systems (300,000+ organizations). JSON-RPC 2.0 compliant BSL implementation.

The most advanced & comprehensive ServiceNow MCP server — 150+ production-ready tools across 17 modules (ITSM, ITOM, HRSD, CSM, SecOps, GRC, Agile, ATF, Flow Designer, Now Assist, and more). Supports multi-instance management, four-tier permission control, 10 role-based tool packages, OAuth 2.0 + Basic Auth, and integrates with Claude, GPT-4o, Gemini, Cursor, VS Code, and Codex.

Enables Money Forward Cloud Accounting operations via API key authentication, including journal entries, voucher attachments, deletions, and office management without OAuth.

An MCP server that bridges AI agents to the eyeot ERP, exposing ~600 business actions (CRM, sales, stock, HR, finance, etc.) as MCP tools over stdio via OAuth 2.1 authentication.

MCP server for the BILLZ POS/Retail API 2.0, enabling AI agents to perform analytics and full retail operations including sales, products, customers, reports, and inventory management.

Exposes HR business tools — attendance, payroll, organization, and recruiting — as native tools that AI models can call. Connections are secured via MCP OAuth 2.0 (discovery, dynamic client registration, authorization code with PKCE, refresh token rotation), static bearer tokens, or anonymous access.

MCP server exposing CATAPA's HR & payroll APIs as tools, with auto-generated public API tools and generic private API tools, plus OAuth support and optional remote deployment.

Reference MCP server for OCL, an open standard giving AI agents structured, scoped business meaning for Odoo data. Serves published example context packs via get_context, resolve_noun, and explain_field (stdio, Python, Apache-2.0).

Enables Claude to securely interact with Acumatica ERP 2025 R2 via per-user OAuth, role-based access, and sensitive field redaction, providing 48 tools for data lookup, utility, and schema discovery.

Enables MCP clients to interact with QuickBooks Online accounting data through typed tools, including OAuth 2.0 authentication, tenant isolation, and approval-gated writes that require operator execution.