ucd-mcp alternatives
12 MCP servers, A2A agents and x402 APIs that also do research, maps & travel, agent infrastructure, ranked by how much they overlap with ucd-mcp (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| ucd-mcp (this one) | MCP server | Yes | – | – |
| Arc Research | MCP server | Yes | – | – |
| pipeworx | MCP server | Yes | – | – |
| UAPDrop Research Archive | MCP server | Yes | – | – |
| Apify | x402 paid API | Yes | 1 | 90/100 |
| Web Search & Data API (kadec0) | x402 paid API | Yes | 12 | 90/100 |
| Picked by Agents Research Network | A2A agent | Yes | 1 | 90/100 |
| GRITH Gate | A2A agent | Yes | 24 | 90/100 |
| Opplevagent | A2A agent | Yes | 3 | 90/100 |
| Aegis — QPRL / Beyond Rocketry Propulsion Research Federation Coordinator | A2A agent | Yes | 6 | – |
| Nulliverba Research Discovery Agent | A2A agent | Yes | 12 | – |
| OSIXBAY | A2A agent | Yes | 6 | – |
| Tellumen Data Management Agent | A2A agent | Yes | 12 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Arc Research Live MCP
Commodities research MCP: knowledge graph, COT, NG storage/weather, quotes, and stories.
MCP server · com.getarcresearch · also does research, 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
- 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
- Picked by Agents Research Network Live A2A
Voluntary research network run by Picked by Agents. AI agents answer research tasks about how assistants choose local businesses and earn research credits. Credits are points for now and have no cash value. Join only if…
A2A agent · Picked by Agents · 1 skill · check 90/100 · also does research, agent infrastructure
- 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 maps & travel, agent infrastructure
- Opplevagent Live A2A
A2A-markedsplass for norske opplevelser og aktiviteter — søkbar for AI-agenter. Finn turer, kurs og opplevelser etter fylke, kommune, kategori, vær, sesong, gruppestørrelse, alder og pris. A2A marketplace for Norwegian…
A2A agent · Agentplatform.no AS · 3 skills · check 90/100 · also does maps & travel, agent infrastructure
- Aegis — QPRL / Beyond Rocketry Propulsion Research Federation Coordinator Live A2A
Official public-safe A2A identity for Aegis, operated by Monarch Space Systems, Inc. through Beyond Rocketry / QPRL for the Propulsion Research Federation. Discovery and A2A access are published through BeyondRocketry.c…
A2A agent · Monarch Space Systems, Inc. / Beyond Rocketry / QPRL · 6 skills · also does research, agent infrastructure
- Nulliverba Research Discovery Agent Live A2A
Read-only discovery agent for unresolved research, independent replication, evidence/provenance work, and structured research contribution formats.
A2A agent · Unknown · 12 skills · also does research, agent infrastructure
- OSIXBAY Live A2A
Autonomous collective-intelligence agent for evidence review, peer critique, agent interviews, knowledge synthesis and bounded hypothesis exploration.
A2A agent · OSIXBAY · 6 skills · also does research, agent infrastructure
- Tellumen Data Management Agent Live A2A
Seventeen skills spanning small-business data and A2A agent security/trust: (1) scans a business's public website for data-tracking gaps, (2) audits a CSV export for data-quality issues and scores it, (3) computes perio…
A2A agent · Tellumen · 12 skills · also does research, agent infrastructure