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Managed Apache Solr for agents: hybrid BM25+kNN search, server-side embeddings, RAG answers
npx @getmcp/cli add com.opensolr/opensolr-mcpRequires Python 3.10+. Community-contributed server. Review source before installing.
OPENSOLR_EMAILOpensolr account email; try the shared demo account [email protected], whose indexes are deleted after 3 days and can be changed or deleted by anyone else using it, or get your own at https://opensolr.com/register (free forever, no card)
OPENSOLR_API_KEYOpensolr API key, found under Account > API in the control panel; the shared demo account's key is 420b8b23e7b12dc8ab838932145a5065 (preloaded index mcp_demo_d1__dense with 300 news articles, limits per index are 200 MB bandwidth and 50 MB disk, anything created is deleted after 3 days and other people can change or delete it)
Config file: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"com.opensolr/opensolr-mcp": {
"command": "uvx",
"args": [
"opensolr-mcp"
],
"env": {
"OPENSOLR_EMAIL": "",
"OPENSOLR_API_KEY": ""
}
}
}
}