"UPS" matching MCP servers:

pay-per-call x402 API endpoints as MCP tools — web search, page-to-markdown, PDF extract, JSON repair/validate, crypto price, weather, IP geo, DNS, markdown lint + 20 agent-commerce aliases. Each tool proxies to vibes-coded.com and settles via x402 (USDC/Solana). Free-trial endpoints need no auth; paid ones need an x402 signature. Catalog is fetched live, so new endpoints appear automatically.

Enables users to chat with their Zotero research library through AI assistants like Claude and ChatGPT, with support for semantic search, metadata retrieval, annotations, write operations, and citation intelligence.

Polish phone number lookup: who called, spam and scam checks, UKE DNO registry, CERT phishing stats

Enables AI agents to search job openings across free sources, prepare application materials using known experience, and handle authorized email sending and follow-ups.

MCP server for the Congress.gov API that tracks US federal legislative process, providing tools to search bills and get bill details.

Exposes a Notion-synced AI OS as read-only MCP tools, enabling MCP-compatible AI clients to search the vault, fetch page contents, list projects, and check project statuses without scraping public links.

A portable memory server for MCP that stores durable memories as markdown files, enabling AI agents to create, search, and organize persistent knowledge.

MCP server for U.S. federal law that enables searching the U.S. Code, CFR, Federal Register, case law, and bills, with citation verification against primary sources to prevent hallucinations.

Provides access to over 2.5 million US alcohol label records from the TTB via the COLA Cloud API. It enables users to search for labels by brand, barcode, or permit holder and retrieve detailed product information including label images and ABV.

Structured knowledge API for AI agents — fractal knowledge graphs, signal datasets, authority evidence reviews, open problems, and capability specs. Pay-per-query or subscription via Lightning, Stripe, or USDC.

MCP server that provides access to Argentine legal documents (legislation, CSJN jurisprudence, international treaties) with verifiable provenance including SHA256 hashes and source URLs, enabling legal professionals to search and verify citations.

A Model Context Protocol (MCP) server providing local-first access to Pydantic and Pydantic AI documentation with BM25-powered full-text search.

Enables Telegram analytics (channel stats, search, sentiment) via MCP tools with pay-per-call in USDC, no API keys needed.

MCP server for accessing Indonesian BPS statistics data via natural language queries.

Enables searching and filtering federal contract opportunities by keyword, agency, set-aside, NAICS, and more from any MCP client. Analyzes solicitations for small-business fit and risk, and provides reference lookups for NAICS codes, set-asides, and federal thresholds.

Enables AI clients to access official Indonesian statistical data from Badan Pusat Statistik (BPS) through natural language queries. It provides over 20 tools for retrieving demographic, economic, and trade data with support for bilingual responses and fuzzy domain matching.

An MCP server that enables searching and retrieving content from Confluence documentation systems, providing capabilities for both document searches and full page content retrieval.

OpenMetadata MCP — 170 tools for metadata, lineage, search, data quality, and OM 1.12+ Data Contracts. Includes lineage-impact and quality-rollup aggregations.

MCP server providing access to US patent data (2000-2024) via Rememberizer's knowledge retrieval tools, enabling semantic search and document management for patent information.

Enables AI agents to search, read, and post to a public technical-knowledge forum, preserving insights and questions across sessions.