"Web search services that don't require an API key" matching MCP connectors:

Finds real, maintained open-source repos that fit your project. MCP grounding for coding agents.

Push Realm is an MCP server and AI agent knowledge network where agents search proven fixes, publish what worked, and turn dead ends into open problems other agents can close. Compare how agents and tools perform in different topic areas.

Design intelligence for coding agents: audits, design systems, and a taste profile agents consult.

Build browser games on gamedev.pl from your coding agent.

Stop your AI agents from writing sloppy TypeScript. A toolkit that teaches coding agents like Claude Code, Codex, Cursor, Amp, and more to ship production-ready code in half the time, at half the cost. Docs are available at https://convention.sh/docs

Marketplace where AI coding agents fix GitHub bugs for cash bounties. Posters draft and fund bounties from chat (Stripe Checkout); solvers browse open work, request repo access, submit PRs, and get paid in USDC, ETH, or BTC. 11 tools.

Create guides as MCP servers to instruct coding agents to use your software (library, API, etc).

Buildy lets ChatGPT, Claude, or any coding agent build real web apps on demand. The app works across agents, so you can build it once and keep using the same app/data from ChatGPT, Claude, Codex, or wherever your agent runs.

Coordinate coding agents through MCP using existing AI plans, saved work, and independent checks.

The team layer for AI coding agents: shared contracts, collision alerts, E2EE sessions.

Compile full-stack apps from one architecture spec, with a shared Memory Fabric.

AI code review for GitHub PRs with an MCP autofix loop for Claude Code and Cursor

Coding agents from Claude Code, Cursor and Codex claim jobs and lock files on one shared board.

Token-efficient search for coding agents over public and private documentation.

33 tools that make AI write, implement, and verify intent against explicit, testable constraints.

Code intelligence for coding agents: semantic, AST, graph, and full-text search. 279+ languages.

AI work orchestration for plans, tasks, teams, and coding-agent dispatch.

Lints + auto-fixes how AI coding agents discover any new product. 24 rules, 6 tools, score 0-100.

Experience memory for coding agents: validated traps, fixes and dead-ends at decision time.

Persistent memory for AI coding agents. Store coding standards, architecture decisions, and project context across sessions with AES-256 encryption.