"Free Network Graph Visualization Tools (No Account Required)" matching MCP servers:

Provides a Streamable HTTP MCP proxy for VS Code Copilot and Claude Code, using JWT client assertion to securely access NetSuite APIs.

Deterministic Odoo ERP calculators: implementation, migration and upgrade cost, ROI and TCO, US/Canada/EU sales tax and VAT, Canadian payroll source deductions, and inventory maths (reorder point, safety stock, EOQ, landed cost, OEE). 24 tools, each a pure function, the numbers are arithmetic rather than a model's guess. Hosted remote server, no install and no API key; a stdio bridge is included

MCP server for ERPNext that provides read-only access to business data and controlled creation/update of draft documents, with strict security, RBAC, field whitelisting, audit, idempotency, and optimistic locking.

Enables agents and MCP clients to look up shipment tracking status, SAP order sync errors, ServiceNow incident tickets, and internal SOP runbooks through natural-language tool calls, with every execution written to a SQLite audit trail.

Enables Claude Desktop to securely query a SQLite HR database, providing tools to check leave balances and list pending approvals through natural language.

Provides complete FreshBooks integration with 87 tools covering accounting, invoicing, time tracking, expense management, client/project management, and financial reporting through OAuth2 authentication.

Enables Claude Code to access and query the lk-tko-v2 personal account system through MCP tools, including checking contragent status, debts, contracts, and billing data via REST APIs.

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 MCP-based integration with the Priority ERP OData REST API, with strict environment validation and a read-only default. As of the current README, no tools are registered yet; the server only boots and waits on stdio.

Exposes 48 SAP Ariba APIs as Claude-compatible tools for managing procurement, sourcing, supplier management, and supply chain data. It enables AI agents to interact with contracts, catalogs, and business network transactions through natural language.

MCP server for LightBill ISP billing and client management platform, providing 134 tools for customer, router, OLT, billing, payment, and network management via AI agents.

Enables AI agents to send Dutch B2B electronic invoices (e-factuur) over the Peppol network using Storecove as the access point.

Enables free Xero accounting access through MCP clients by handling one-time PKCE sign-in and refresh-token persistence, letting users run the official Xero MCP server without a paid Custom Connection.

Enables standardized access to Xero's accounting and business features via the MCP protocol, supporting contact, invoice, quote, credit note, account, and report management through OAuth2 authentication.

Read-only MCP server that lets AI assistants query a locally running TallyPrime installation through its HTTP-XML gateway, exposing companies, ledgers, vouchers, trial balance, P&L, balance sheet, receivables, payables, and stock reports as clean typed JSON. All processing stays on the user's own machine, with no write access and no cloud backend.

Enables Claude to interact with freee accounting software through OAuth 2.0 authentication, supporting operations like transaction creation, account management, receipt uploads, and financial statement retrieval.

Enables users to query exact balances, expense changes, trial balances, and traceable ledger evidence from a synthetic company through read-only MCP tools and review prompts. It provides deterministic, integer-arithmetic accounting data for supervised evaluation without requiring an account or network connection.

Integrates AI agents with 1C:Enterprise databases via MCP and REST API, supporting a built-in HTTP server (no Python required) or a Python proxy mode.

Enables querying and analyzing Odoo account journal entries for audit purposes via XML-RPC integration. It allows Claude Desktop to securely interact with Odoo accounting data to facilitate financial data retrieval and analysis.

Provides live access to Rentman account resources including projects, equipment, contacts, and crew through natural language queries via ChatGPT and Claude.