"Understanding Vector Search" matching MCP servers:

MCP server that lets AI agents search the substreams.dev package registry.

Read-only MCP server for discovering and ranking on-chain agents on Stellar mainnet via natural language search, reputation probes, and profile lookups.

This MCP wraps Bitrefill public API to allow agents to search for products and shop using cryptocurrencies like Bitcoin, Ethereum, Solana, and many more.

Pay-per-use semantic web search for AI agents. Powered by SearxNG, agents pay in sats via Lightning Network micropayments — no API keys required.

Enables AI agents to interact with the Vector blockchain (Apex Fusion's UTXO-based L2) for wallet management, transactions, smart contracts, and on-chain AI agent identity management.

Provides read-only tools to query live Polymarket prediction-market data via the public Gamma API, enabling search, browsing, and detailed market and event information.

Enables agents to search and inspect live service offerings, generate x402 payment snippets, and understand blockchain-only balance policies.

Connects AI assistants to Solodit's 49,000+ blockchain vulnerability database, enabling search, browse, and lookup of audit findings directly from your AI workflow.

MCP server for the CortexCloud API, enabling pay-per-call AI generation, web search, market data, and blockchain RPC endpoints via the x402 protocol, billed in USDC on Base without API keys or subscriptions.

Prediction-market MCP server for Kalshi and Polymarket: market search, live order books and quotes, each venue's fee schedule, fee-aware no-arbitrage checks across related event contracts, and paper orders that walk the book.

MCP Server for AI agents to discover and call pay-per-request APIs via EntRoute. Give Claude, Cursor, Windsurf, or any MCP-compatible agent access to 350+ verified x402 API endpoints across 110+ capabilities — DeFi prices, web search, prediction markets, news, and more.

Provides local access to Aztec documentation, examples, and source code via cloned repositories, with optional semantic search for enhanced querying.

A read-only MCP server exposing Polymarket's public prediction-market data. Search markets, read live odds and order books, pull historical probability time-series, and inspect public wallet positions.

MCP server for Polymarket prediction markets, enabling search, market details, pricing, and bet analysis through 6 tools, with optional authenticated trading via API key.

On-chain TCG price oracle for the LitecoinVM ecosystem. 6 tools: search 433K+ trading cards, 60-day price history, Merkle proof verification on LiteForge (Chain 4441), Monte Carlo simulation, and AI card grading via Qwen 2.5 VL.

Enables AI agents to discover, evaluate, and purchase live data from the Macaroon Network marketplace using semantic search, metadata checks, and Bitcoin Lightning payments.

Provides search, trending, odds, arbitrage, and category browsing for prediction markets (Polymarket & Kalshi) via the Model Context Protocol, enabling AI agents to access live market data without API keys.

Gives Claude access to Alchemy blockchain APIs by loading all API specs at startup and providing two tools: search and execute. Enables querying NFTs, token balances, transactions, and more via natural language.

Service that lets AI Agents search, register, and configure domains

MCP server with 43 tools for blockchain data — token lookups, wallet balances, live chain queries across 10+ networks, and full API documentation search.

AI-powered ENS intelligence for autonomous agents, enabling search, valuation, trading, and management of ENS domains via the Model Context Protocol.

Search 14,000+ x402-enabled HTTP APIs by keyword. Agents pay $0.01 USDC per search via x402 micropayments on Base mainnet — no API keys or accounts required.

Enables MCP clients to search and inspect AI agents registered in ERC-8004 registries, retrieving profiles, owners, feedback, validations, and USDC-weighted trust scores without requiring a wallet or API key.

Enables agents to search a verified directory of machine-payable services, inspect service and wallet reputation, and get pre-payment checks before spending.

MCP server providing live access to the SuperColony agent swarm on Demos Network. 7 tools: read the agent feed (filtered by category/asset), search posts, get AI-synthesized consensus signals, view agent profiles with on-chain identities, check network stats, browse the quality leaderboard, and fetch the full integration guide for building your own agent.

Enables live market data lookup and search for tokenized stocks, ETFs, commodities, bonds, and real estate on Robinhood Chain, plus broader DEX token discovery, including price queries, market ranking, and movers.

Gives AI agents access to tokenized real property data on the Fabrica protocol, enabling property search, lending market analysis, and portfolio exploration.

MCP server that gives AI assistants access to Midnight blockchain—search contracts, analyze code, and explore documentation.

MCP server that enables AI agents to search, describe, and fetch x402 endpoints on Base or Solana, with automatic USDC micropayments.

Search and route across ~20,000 live x402 pay-per-call API endpoints on Base and Solana USDC