ColdState — Deterministic Knowledge Infrastructure alternatives
12 MCP servers, A2A agents and x402 APIs that also do knowledge & memory, ranked by how much they overlap with ColdState — Deterministic Knowledge Infrastructure (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| ColdState — Deterministic Knowledge Infrastructure (this one) | MCP server | Yes | – | – |
| Context Link | MCP server | Yes | 4 | 80/100 |
| Acorn Reply | MCP server | Yes | – | – |
| Agently Brain | MCP server | Yes | – | – |
| Arc Research | MCP server | Yes | – | – |
| Family Office Knowledge Graph | MCP server | Yes | – | – |
| Fold Laboratories Art Catalogue | MCP server | Yes | – | – |
| Gnosis Memory | MCP server | Yes | – | – |
| Husverket – Swedish Prefab Houses | MCP server | Yes | – | – |
| Listen to Sadhu (listentosadhu) | MCP server | Yes | – | – |
| Malaysia Open Data MCP Server | MCP server | Yes | – | – |
| MoonlyBox MoonLink | MCP server | Yes | – | – |
| Naumu | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Context Link Live MCP
One semantic search across your sites, Drive, Notion, email, files and Basecamp.
MCP server · ai.context-link · 4 tools · check 80/100 · also does knowledge & memory
- Acorn Reply Live MCP
Read and edit your Acorn Reply knowledge base from any MCP client.
MCP server · com.acornreply · also does knowledge & memory
- Agently Brain Live MCP
Company brain for AI agents — temporal knowledge graph search, exploration, and durable memory.
MCP server · dev.agently · also does knowledge & memory
- Arc Research Live MCP
Commodities research MCP: knowledge graph, COT, NG storage/weather, quotes, and stories.
MCP server · com.getarcresearch · also does knowledge & memory
- Family Office Knowledge Graph Live MCP
Family Office Knowledge Graph: read-only MCP door over the public record. Agentic KG Holdings.
MCP server · ai.familyofficeknowledgegraph · also does knowledge & memory
- Fold Laboratories Art Catalogue Live MCP
Original art from galleries and artists: semantic search, provenance, live availability.
MCP server · com.foldlaboratories · also does knowledge & memory
- Gnosis Memory Live MCP
Persistent memory and vector search for AI agents. Hosted, OAuth-protected via Google sign-in.
MCP server · com.gnosismemory · also does knowledge & memory
- Husverket – Swedish Prefab Houses Live MCP
Husverket AB knowledge base: 350 Q&A on attefallshus, prices and building permits in Sweden.
MCP server · ai.husverket · also does knowledge & memory
- Listen to Sadhu (listentosadhu) Live MCP
Listen to Sadhu exposes a searchable corpus of Vedic scripture and recorded lectures. Look up verses by reference (e.g. "BG 2.13", "SB 5.5.3", "CC Madhya 8.128") with original Devanagari/Bengali, IAST transliteration an…
MCP server · listentosadhu · also does knowledge & memory
- 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
- MoonlyBox MoonLink Live MCP
Personal knowledge MCP: capture bookmarks, notes & todos by chat; archive pages; search memory.
MCP server · cn.moonlybox · also does knowledge & memory
- Naumu Live MCP
Search, extend, and act on your team's Naumu knowledge graph: notes, threads, and nodes.
MCP server · ai.naumu · also does knowledge & memory