"Web search services that don't require an API key" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Entity resolution — data mapping, SDK code generation, docs search, and error troubleshooting
AMZScout Skill + MCP gives AI agents live access to real Amazon marketplace data across 14 Amazon marketplaces. Analyze any ASIN, validate product ideas, research niches, compare competitors, discover profitable keywords, and build data-driven PPC strategies using trusted Amazon insights instead of AI assumptions. Works with Claude, ChatGPT, Cursor, and any other MCP-compatible AI client. To connect, you'll need an AMZScout API plan and authorize your account. Get access and view pricing here: https://learn.amzscout.net/amazon-product-api-for-ai-agents
Build and run a JSONPad backend: lists, items, indexes, write rules, schema sync, history, flows.
FirmLedger: search and verify businesses. Free needs no key; Pro adds contacts, news, jobs.
The agent-native cloud: database, functions, AI, storage, computers. 50 tools, one API key.
AI-powered life cycle assessment and modelling: connect to LCA databases, build and analyze systems
Query your Postgres from ChatGPT or Claude without exposing the database or handing over credentials. Run npx boltschema connect next to your database and it dials out over HTTPS — no inbound firewall rule, no open port, works with localhost and VPC-private databases. Read-only is enforced by a SQL guard, a Postgres READ ONLY transaction, and a scoped role generated for you.
Persistent knowledge graph for AI-augmented teams. Store decisions, findings, and standing rules across agent sessions with semantic search and typed connections. Includes cross-session memory, audit trail, workspace isolation, and secret detection. Built for teams running agents that need to remember. Free until launch with team tier as default, anon trial available.
PDF, image, video, OCR, screenshot, SQL, QR and text tools for agents. No API key, no signup.
Build, validate, deploy — HTTP APIs, cron jobs, webhooks and MCP tools — from your AI client. Air Pipe MCP token as a bearer credential, e.g. 'Authorization: Bearer <token>'. Create one at https://app.airpipe.io/
Read and edit DB Planner database schemas (DBML/SQL), Mermaid diagrams and board layouts from any MCP client. 40 tools with annotations and output schemas. OAuth sign-in, with read and write as separate scopes enforced server-side.
Build multi-tenant apps over MCP. Schemas, CRUD, deploys — access control enforced server-side.
Database for your AI agent. Turn its output into data, docs, skills, and apps you can actually use.
A calorie MCP that looks up calories and macros from a 4M+ food catalog, not model guesses.
RedM / RDR3 docs MCP server: native lookups, semantic search, VORP, RSGCore, oxmysql.
Personal finance ledger for AI agents — query spending, track bills, forecast cash flow.
Search DailyMed drug labels, SPLs, NDCs and packaging.
Deploy a multi-user web app from your agent: hosting, auth, database, and permissions.
Search ILOSTAT labour indicators, query and compare series, build country profiles, run SQL.
Search, compare & filter 102,191 European car variants — 180 specs, 19 languages, EV data.
