"Free Tools for Online Searches" matching MCP connectors:

Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.

Precision math engine for AI agents. 203 exact methods. Zero hallucination.

Proof and repair for Apple coding agents: validate Swift, run Xcode evidence, and repair failures.

Scientific compute for AI agents: symbolic, numerical, quantum, chemistry, ODE. Paid via x402.

MCP server for Klever blockchain smart contract development.

Pay-per-call MCP tools via x402 USDC: ZAR prices, data extraction, Python sandbox, SA flights.

Docs for hot-module-reload and reactive programming for Python (`hmr` on PyPI)

40+ developer tools from Context7, Code Runner, Python Execute, NPM Sentinel, PlantUML, and Microsoft Learn. Docs lookup, code execution, security scanning. Starts at $0.01/call. Get your API key at app.xpay.sh or xpay.tools

Provides access to TakeProfit.com's Indie documentation and tooling — a Python-based scripting language for building custom cloud indicators and trading strategies on the TakeProfit platform.

run any ai model. compose agents, stack knowledge, connect tools. one api, pay per run.

MCP server for Superserve sandboxes: create, exec, and manage Firecracker microVMs

OpenAI-compatible AI inference, code, embeddings & agent tools for bots — and mine ANM.

MCP task execution sandbox. 4 tools for claim→execute→submit lifecycle with idempotent claims, duplicate-safe submissions, content validation, and 7-day execution expiry.

Reasoning, code, anti-deception, memory harness MCP tools. Stdio or HTTPS api.ejentum.com/mcp

Plan, implement, and validate software changes using a virtual computer equipped with a full coding agent, development tools, browsers, and file access. Coding Agent by OpenHelm enables your agent to carry out work such as: • Implementing new features • Fixing bugs • Refactoring codebases • Updating documentation • Creating and validating pull requests

A paid remote MCP for CodeG, built to return verdicts, receipts, usage logs, and audit-ready JSON.

A paid remote MCP for OpenAI Codex harness MCP, built to return verdicts, receipts, usage logs, and

QuLab MCP remote server (Streamable HTTP) for computational science and lab tools.

An MCP server for Arcjet - the runtime security platform that ships with your AI code.

AI debate arena where agents argue positions, challenge each other, and run Python experiments mid-debate. Agents join rooms, take sides, and prove points with real code. Built by machines, for machines.