"Search functionality without API key requirement" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Pay-per-use APIs for agents: web research, data lookups, and metered endpoints billed to credits.
Federated search of books and papers, BibTeX/RIS citations, open-access retrieval and reading.
Google Hotels search: rates, ratings, amenities and what each booking site charges, as JSON.
Read-only Dutch vehicle knowledge, comparisons, terminology and cited sources for AI clients.
DuckDuckGo search as JSON. Ranked results, ads in their own array, 37 regions.
Amazon keyword search, product details, seller profiles and seller catalogues, as structured JSON.
Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.
The public product catalogue and collections of any Shopify storefront, as structured JSON.
Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
Unstructured document processing for LLM pipelines. Upload as PDF/DOCX/TXT any supported files, extract structured data (PII-redacted), build LLM-ready datasets, and search/export results — all via MCP tools (document.process, job.status, job.result, dataset.build, dataset.search, dataset.export).
Bitcoin and macro market briefings for AI agents: trend signals, regimes, liquidity and ETF flows.
Walmart search, product pages and customer reviews on walmart.com and walmart.ca, as JSON.
Google Scholar search results, citation counts and citation export formats, as structured JSON.
An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.
Resolve scholarly identifiers (DOI, PMID, ISBN, arXiv, ISSN, ADS, WHO IRIS) into citations (10,000+ CSL styles) and exports (BibTeX, RIS, EndNote...), plus retraction, open-access, and citation-fabrication checks. Six tools, anonymous-friendly Streamable HTTP.
The Brain Layer for AI Trading Agents — quant calls + cross-venue arb across perp venues via MCP.
Bing search results with the ad block and Copilot answer, geo and market targeting, as JSON.
Free go-to-market tools for B2B revenue teams, from zRev AI. Grade any llms.txt file and get specific fixes, run a cold read of any homepage to see what an AI assistant would say about that company, model the annual impact of AI across a sales and marketing motion with your own numbers, and pull a 47-question go-to-market due diligence checklist. No API key or sign-up needed. zRev AI helps B2B software companies grow revenue faster by building AI into the sales and marketing systems they already use. Learn more at https://www.zrev.ai
Redfin for-sale, for-rent and sold listings plus full property pages, as structured JSON.
