"Free Tools for Online Searches" matching MCP servers:

• mcp-sequentialthinking-tools

  spences10

  A

  license

  A

  quality

  C

  maintenance

  An adaptation of the MCP Sequential Thinking Server designed to guide tool usage in problem-solving. This server helps break down complex problems into manageable steps and provides recommendations for which MCP tools would be most effective at each stage.

  Last updated 2026-07-18

  1

  746

  583

  MIT

• dyoe-agent-tools-mcp

  bjyoe2016

  F

  license

  A

  quality

  C

  maintenance

  Pay-per-call tools for AI agents including trust checks, due diligence, market data, and human-verified approvals, settled in USDC on Base via the x402 protocol.

  Last updated 2026-07-01

  16

• MCP Dynamic Tools

  Positronic-AI

  A

  license

  B

  quality

  D

  maintenance

  A dynamic MCP server that automatically discovers Python files in a directory and exposes them as tools to any MCP-compatible AI client, allowing users to easily create and deploy custom AI tools.

  Last updated 2025-06-11

  1

  MIT

• MCP Tools for Obsidian

  jacksteamdev

  A

  license

  -

  quality

  F

  maintenance

  A local MCP server that enables AI applications like Claude Desktop to securely access and work with Obsidian vaults, providing capabilities for reading notes, executing templates, and performing semantic searches.

  Last updated 2026-05-13

  832

  MIT

• Agent Guards — deterministic

  mlawsonking

  A

  license

  -

  quality

  B

  maintenance

  Input/output safety gate for AI agents: detect prompt-injection/jailbreak, leaked secrets/PII, and URL/IP reputation. Deterministic, no LLM.

  Last updated 2026-07-05

  427

  MIT

• reasoning-tools

  MikeyBeez

  F

  license

  -

  quality

  D

  maintenance

  Provides computational tools for systematic reasoning, including boolean evaluation, date arithmetic, object counting, state tracking, and format validation, to enhance agent capabilities and eliminate calculation errors in reasoning tasks.

  Last updated 2026-01-14

  4

• 🍋 LemonCake — Billing &

  evidai

  A

  license

  A

  quality

  A

  maintenance

  Pay-per-call USDC payment proxy for AI agents. Issue scoped Pay Tokens with hard spending caps and auto-journal every charge to freee / Money Forward / QuickBooks.

  Last updated 2026-06-17

  6

  116

  2

  MIT
• 

  Archonics MCP Audit Serverofficial

  archonics

  A

  license

  A

  quality

  C

  maintenance

  Free MCP tools for context engineering audits of AI agents, offering on-demand analysis of system prompts, tool definitions, and context packing.

  Last updated 2026-05-14

  3

  75

  MIT

• Share A Bot MCP A2A

  codeislaw101

  A

  license

  A

  quality

  C

  maintenance

  Discover and connect your agents with other agents via A2A protocol. Share resources for free or fee.

  Last updated 2026-04-15

  6

  MIT

• bytesagain-mcp

  bytesagain

  A

  license

  A

  quality

  D

  maintenance

  Search 60,000+ AI agent skills from ClawHub, LobeHub, Dify, and GitHub via MCP SSE or REST API. Free, no API key required.

  Last updated 2026-04-27

  4

  MIT

• AgentPay x402 — Economic

  romudille-bit

  A

  license

  A

  quality

  B

  maintenance

  AgentPay — x402 crypto data gateway on Stellar. 10 live pay-per-call tools: token prices, whale activity, gas tracker, DeFi TVL, Fear & Greed, Dune queries, token security. Agents pay USDC on Stellar. No API keys. Budget-aware sessions.

  Last updated 2026-07-17

  10

  2

  MIT

• Gemini MCP Server for Claude

  raydollete

  A

  license

  A

  quality

  B

  maintenance

  Integrates Google's Gemini AI models into Claude Code and other MCP clients to provide second opinions, code comparisons, and token counting. It supports streaming responses and multi-turn conversations directly within your existing AI development workflow.

  Last updated 2026-05-09

  3

  Apache 2.0

• Agent Module

  AgentModule

  A

  license

  A

  quality

  C

  maintenance

  Agent-native knowledge infrastructure. Deterministic, vertical-specific knowledge bases for autonomous agent consumption via MCP. Ethics modules mapped to EU AI Act articles. Free 24-hour trial.

  Last updated 2026-04-04

  7

  2

  MIT

• fairchem-mcp

  jkitchin

  A

  license

  A

  quality

  B

  maintenance

  An interactive MCP server for FAIRChem and ASE simulations that allows LLM agents to load a model once and steer relaxations, MD, NEB, phonons, and minima searches mid-flight, with live monitoring and code introspection.

  Last updated 2026-06-08

  17

  1

  MIT

• MCP Think Tool Server

  cgize

  A

  license

  A

  quality

  D

  maintenance

  Implements Anthropic's 'think' tool for Claude, providing a dedicated space for structured reasoning during complex problem-solving tasks that improves performance in reasoning chains and policy adherence.

  Last updated 2025-04-11

  4

  1,310

  39

  MIT

• pythia-the-oracle

  eyloni

  A

  license

  A

  quality

  D

  maintenance

  An oracle for machines that need to think sideways. Feed it a creative problem; it returns something you can't quite explain but can't stop using. Three free consultations.

  Last updated 2026-03-22

  1

  1

  Creative Commons Attribution Non Commercial No Derivatives 4.0 International

• AgentBase MCP Server

  AgentBase1

  A

  license

  A

  quality

  D

  maintenance

  Open registry of agent instruction files — system prompts, skills, workflows, and domain packs. Exposes the OpenClaw registry via 4 MCP tools: search by keyword/category, fetch full instruction files, list categories, and get top-rated files. CC0 licensed, free to use.

  Last updated 2026-03-17

  4

  109

  1

  MIT

• EOR Compliance MCP

  closermethod

  F

  license

  A

  quality

  C

  maintenance

  MCP server for AI agents handling EOR & global hiring conversations. 8 tools: country EOR briefs, misclassification risk, EOR vs entity calculator, termination rules, statutory benefits, work visa paths, objection handlers.

  Last updated 2026-05-04

  8

• DepScope

  cuttalo

  F

  license

  A

  quality

  C

  maintenance

  Package intelligence MCP server. Stops AI agents from installing hallucinated/malicious packages across 17 ecosystems. 22 tools, free, no auth.

  Last updated 2026-05-05

  22

  1

• agentic-platform

  andysalvo

  A

  license

  A

  quality

  C

  maintenance

  Score your agent's governance (0-100), lint MCP tool definitions, and estimate costs across all major models. Free diagnostic tools with no API key needed. Expert skill files on governance, economics, and system architecture available with free tier.

  Last updated 2026-05-19

  8

  1

  MIT