"Calibre-Web" matching MCP connectors:

AgentBridge is the only MCP server that gives AI agents access to structured China knowledge assets—university reports, industry briefings, policy analysis, and real-time web content—through x402 micropayments on Base. Everything is machine-readable, pay-per-use, and settled in USDC.

Docs: https://docs.keenable.ai/mcp-server Keenable is a free, remote MCP server that gives agents access to the web index. Search the web with ranked results and date/site filters, then fetch any indexed page as clean markdown. Works out of the box with no account or API key.

TakoA

Give your agent web search and authoritative datasets: S&P Global, FRED, OECD, SimilarWeb & more.

Brand health & trend footprint across PSFK expert graphs with citable sources, not web summaries.

Scrape, crawl, map and extract the web. Pay per call in USDC, no account or API key.

GrabblistA

Save and organize web finds in persistent, user-controlled collections for AI assistants.

Buy timestamped web, company, commerce, social, document and decision data via x402.

Resolve real-world capability gaps: validate native MCPs, search the web, and record unmet demand.

x402-paid tools: EU company & sanctions data, web search, LLM chat, crypto intel, x402 monitoring.

Per-call data for agents: graded behavioural science, dark-pattern detection, web fetch, geocode.

Forensic archive of javaBin & JavaZone origins (1998-2007) as a signed KCP knowledge web.

1000+ AI tools in one MCP server from web scraping, lead gen, finance, media, research, and dev tools from 80+ providers. Pay as little as $0.01/call

MCP server for SEO and web analysis data including keyword rankings, backlink profiles, site audits, and traffic analytics for AI agents.

Multi-engine scholarly research server for search, traversal, full text, and reading lists.

Secant Agent Research PackB

Paid MCP web research for agents: search, extraction, citations, and x402 payment discovery.

Lifestyle medicine health intelligence via x402 micropayments. 637+ peer-reviewed references.

futuresearchOAuth

An API for forecasting and multi-agent research. FutureSearch provides endpoints that use web research agents at scale, for higher accuracy than web search or single agent approaches alone can achieve. forecast runs a team of forecasters to predict future dates, numbers, and probabilities. multi_agent orchestrates multiple researchers to answer one question. agent_map runs one research agent over every row of a dataset, scaling to thousands of rows and agents.

Live web search and research synthesis for agents, with free samples and x402 USDC payments.

95 live tools for influencer, social, lead, review, job, ecommerce and web data. Pay per result.

An MCP server for deep research or task groups