GrayMatter MCP Server
by valkyrlabsio.github.ValkyrLabs/graymatterv0.3.3
Secure durable memory and bounded context for AI agents, with hosted OAuth and local Lite support.
context tax
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cold start
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freshness
Active2d ago
Install GrayMatter MCP server
Install in Claude Code
claude mcp add --transport http graymatter https://api-0.valkyrlabs.com/graymatter/mcpInstall in Cursor
{
"mcpServers": {
"graymatter": {
"url": "https://api-0.valkyrlabs.com/graymatter/mcp"
}
}
}Install in Claude Desktop
{
"mcpServers": {
"graymatter": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://api-0.valkyrlabs.com/graymatter/mcp"
]
}
}
}Or add it as a custom connector under Settings → Connectors. The config above bridges via mcp-remote.
Install in VS Code
{
"servers": {
"graymatter": {
"type": "http",
"url": "https://api-0.valkyrlabs.com/graymatter/mcp"
}
}
}Install in Windsurf
{
"mcpServers": {
"graymatter": {
"serverUrl": "https://api-0.valkyrlabs.com/graymatter/mcp"
}
}
}Remote endpoints
- streamable-http
https://api-0.valkyrlabs.com/graymatter/mcp
Freshness
Active — last maintenance signal 2d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-10-08 · 2d ago · GitHub
Latest release
2026-09-09 · 30d ago · GitHub · v0.3.3+codex.20260909171430
Package published
no data · npm/PyPI
Registry entry updated
2026-10-06 · 4d ago · official registry · v0.3.3
FAQ
›How do I install the GrayMatter MCP server in Claude Code?
Run: claude mcp add --transport http graymatter https://api-0.valkyrlabs.com/graymatter/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does GrayMatter require an API key?
No required environment variables are declared in its published metadata.
›Can I use GrayMatter as a remote (hosted) MCP server?
Yes. It is a hosted MCP server; connect to its URL with any client that supports remote MCP.
›Is GrayMatter in the official MCP registry?
Yes, as io.github.ValkyrLabs/graymatter.
Alternatives to GrayMatter
Other memory MCP servers.