Contextq MCP vs ChatCrystal
A side-by-side look at the Contextq MCP and ChatCrystal MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
C
Contextq MCPKnowledge & Memory · Local subprocess (stdio)Persistent memory, hybrid search and a goal graph for AI agents, over stdio or remote HTTP.41FairAuth: api key requiredVerdict: choose Contextq MCP for knowledge & memory work as a local process; choose ChatCrystal for knowledge & memory as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
CChoose Contextq MCP when
- You need dedicated capabilities in the Knowledge & Memory domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
CONTEXT_API_URL, CONTEXT_API_KEY.
Choose ChatCrystal when
- You need dedicated capabilities in the Knowledge & Memory domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | C Contextq MCP | |
|---|---|---|
| Category | Knowledge & Memory | Knowledge & Memory |
| Quality signal | 41/100 · Fair | 59/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | API key required | No auth required |
| Pricing | BYOK (pay the provider) | Free |
| Required env vars | CONTEXT_API_URLCONTEXT_API_KEY | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 60 |
| Directory activity | 0 views 0 installs 0 upvotes | 3 views 0 installs 0 upvotes |
| Tools | Not listed | Not listed |
| Full listing | View Contextq MCP | View ChatCrystal |
Tools & capabilities
Contextq MCP tools
No tool names declared yet. Check the project README from the listing page.
ChatCrystal tools
No tool names declared yet. Check the project README from the listing page.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Contextq MCP
{
"mcpServers": {
"contextq-mcp": {
"command": "npx",
"args": [
"-y",
"@contextq/mcp"
],
"env": {
"CONTEXT_API_URL": "YOUR_CONTEXT_API_URL_HERE",
"CONTEXT_API_KEY": "YOUR_CONTEXT_API_KEY_HERE"
}
}
}
}
ChatCrystal
{
"mcpServers": {
"zengliangyi-chatcrystal": {
"command": "npx",
"args": [
"-y",
"chatcrystal"
]
}
}
}
Frequently asked questions
Contextq MCP is categorized under Knowledge & Memory and uses a local stdio subprocess. ChatCrystal belongs to Knowledge & Memory and uses a local stdio subprocess. Pick Contextq MCP for knowledge & memory work and ChatCrystal for knowledge & memory.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Contextq MCP is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. ChatCrystal is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add contextq-mcp and zengliangyi-chatcrystal as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Contextq MCP has a quality signal of 41/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. ChatCrystal has 59/100 (Good) with 3 views, 0 installs and 60 GitHub stars.