Install Ossian in Claude Code
claude mcp add ossian -e OSSIAN_API_KEY=... -- npx -y ossian-mcp{
"mcpServers": {
"ossian": {
"command": "npx",
"args": [
"-y",
"ossian-mcp"
],
"env": {
"OSSIAN_API_KEY": "..."
}
}
}
}Replace each ... with your own value.
Frequently asked questions
What does the Ossian MCP server do?
RAG over your own documents with cited passages, plus durable agent memory ranked by relevance, importance and recency; read-only by default.
Is the Ossian MCP server free?
The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.
Does Ossian run locally or remotely?
Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.
How do I add Ossian to Claude Code?
Run: claude mcp add ossian -e OSSIAN_API_KEY=... -- npx -y ossian-mcp
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