"Web search services that don't require an API key" matching MCP connectors:
Matching Connector Tools:
Search scientific papers with structured experimental data from full-text studies
Hosted pay-per-use TTS: 54 neural voices, 9 languages incl. Brazilian Portuguese. $10 free credits.
Hosted endpoint for patch-tuesday-mcp: query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment. Free, no auth or API keys.
Run and manage H Company's Computer-Use Agents from any MCP client.
Hosted MCP server for Retro Diffusion. Generate authentic, grid-aligned pixel art — sprites, characters, animations, and tilesets — from Claude, Cursor, VS Code, Windsurf, or any MCP client. 90+ styles, free cost estimation, pay-per-generation with no subscription and credits that never expire.
Search WindowsForum.com threads, posts, and Windows news; fetch documents and Microsoft KB info.
Custom metal-print storefront: catalog search, product details, shipping, reviews. Read-only.
Brazilian fiscal MCP server - issue NF-e, NFC-e, NFS-e, CT-e, MDF-e and DC-e via SEFAZ.
The industry standard reference for safe, observable, and steerable AI agent UX. Browse and search the 10 Blueprint principles, principle clusters, curated implementation examples, and application guides. 13 public tools require no credentials. Tools for learning path, coaching context, and handoffs require a Firebase Bearer token. Validation and usage summary tools require a Pro or Teams membership.
500+ deterministic tools for AI agents: math, conversion, validation, hashing, encoding, date/time.
PreClick scans links for threats and confirms intent match with high accuracy before agents click.
PreClick scans links for threats and confirms intent match with high accuracy before agents click.
Generate hyper-personalized cold email sequences via MachFive API.
Live market data, signals, positions, and macro analysis for crypto, KR stocks, and US stocks.
Paid MCP web research for agents: search, extraction, citations, and x402 payment discovery.
MCP server that delivers up-to-date Bitrix24 REST API documentation.