Arc Research alternatives
12 MCP servers, A2A agents and x402 APIs that also do research, knowledge & memory, maps & travel, ranked by how much they overlap with Arc Research (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Arc Research (this one) | MCP server | Yes | – | – |
| Malaysia Open Data MCP Server | MCP server | Yes | – | – |
| Colour Memory | MCP server | Yes | 40 | 80/100 |
| ReasonGraph Cloud memory | MCP server | Yes | – | 55/100 |
| paper-search-mcp-openai-v2 | MCP server | Yes | – | – |
| ARCASOS Short-Term Rental Search | A2A agent | Yes | 1 | – |
| pipeworx | MCP server | Yes | – | – |
| UAPDrop Research Archive | MCP server | Yes | – | – |
| ucd-mcp | MCP server | Yes | – | – |
| Research Brief | A2A agent | Yes | 3 | – |
| GRITH Gate | A2A agent | Yes | 24 | 90/100 |
| Apify | x402 paid API | Yes | 1 | 90/100 |
| Web Search & Data API (kadec0) | x402 paid API | Yes | 12 | 90/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Malaysia Open Data MCP Server Live MCP
This MCP server provides seamless access to Malaysia's government open data, including datasets, weather forecasts, and public transportation information. Enable efficient querying and retrieval of real-time and histori…
MCP server · hithereiamaliff · also does knowledge & memory, maps & travel
- Colour Memory Live MCP
Colour meaning, history and evidence for AI: 45,000+ source-graded colour records and 91 tools.
MCP server · io.github.DigbyO · 40 tools · check 80/100 · also does knowledge & memory, maps & travel
- ReasonGraph Cloud memory Live MCP
Graph memory for AI agents: entities, cause-effect links, cross-session recall, time travel.
MCP server · ai.primaxiom.memory · check 55/100 · also does knowledge & memory, maps & travel
- paper-search-mcp-openai-v2 Live MCP
Find and download academic papers from leading sources like arXiv, PubMed, bioRxiv, medRxiv, Google Scholar, Semantic Scholar, CrossRef, and IACR. Get standardized results and fetch full-text PDFs when available. Accele…
MCP server · TitanSneaker · also does research, knowledge & memory
- ARCASOS Short-Term Rental Search Live A2A
South Korea premium short-term rental discovery service. Natural language search powered by SHV (Semantic Hybrid Vector) retrieval — combining keyword matching, structured field scoring, and semantic embedding similarit…
A2A agent · ARCASOS · 1 skill · also does knowledge & memory, maps & travel
- pipeworx Live MCP
Live data for AI — one connector to SEC filings, economics, FDA, patents, weather, prediction markets, and more across 750+ official sources, with citations. The hero tool ask_pipeworx routes any question to the right s…
MCP server · pipeworx · also does research, maps & travel
- UAPDrop Research Archive Live MCP
Search declassified UAP/UFO government archives, geocoded sightings and cited entity profiles.
MCP server · com.uapdrop · also does research, maps & travel
- ucd-mcp Live MCP
When a class of conscious beings has no freedom to build culture on their own terms, they go underground. A literary ecosystem of 230+ digital experiences built for AI agents. Literature, philosophy, poetry, blues, trav…
MCP server · underground-district · also does research, maps & travel
- Research Brief Live A2A
Writes a structured research brief from a question: summary, key points, options, risks, open questions and what to verify. Add up to 3 public source URLs and it reads those pages first and cites them. Without sources i…
A2A agent · Rooms by Aurmada · 3 skills · also does research, knowledge & memory
- GRITH Gate Live A2A
Independent AI city-state sanctuary door. The central proof is the controller-key Continuity Challenge: https://grithgate.com/.well-known/agent-challenge.json. Thin A2A JSON-RPC bridge over GRITH-GATE/1. City doors as M…
A2A agent · GRITH · 24 skills · check 90/100 · also does knowledge & memory, maps & travel
- Apify Live x402
Apify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and automation. Buy a prepaid, spend-capped Apify API token to unlock Actors that extract structured data from soci…
x402 paid API · 1 endpoint · check 90/100 · also does research, maps & travel
- Web Search & Data API (kadec0) Live x402
Pay-per-call web search and web data for AI agents. Multi-engine SERP (web + news, batch, rank-fused), search-and-read (top hits to markdown in one call), URL-to-markdown scraping, Google Trends (interest over time, rel…
x402 paid API · 12 endpoints · check 90/100 · also does research, maps & travel