Calypso Multimodal RAG MCP
This is the fastest way to add hosted multimodal RAG to Claude Desktop or Cursor without running your own vector stack. One npx command connects you to Gemini File Search for native retrieval across PDFs, screenshots, charts, and diagrams. You get dedicated upload tools for single files and batch knowledge ingestion, multi-turn conversations with context reset via /new, and verifiable citations with source metadata. The server exposes /v1/responses for grounded answers, /v1/knowledge APIs for uploads, and auto-discovery of your team's RAG variants. Reach for this when you want production document grounding without managing embeddings, chunking strategies, or OCR pipelines yourself.
- GitHub stars
- 2
- tools
- 9
- auth
- Secret needed
- transport
- STDIO
- env vars
- 2
- last updated
- Aug 28, 2026
Tools
9 toolsPublic tool metadata for what this MCP can expose to an agent.
calypso-agentDirect Calypso agent access.
Direct Calypso agent access.
No parameter schema in public metadata yet.
calypso-searchSearches your knowledge directly and returns matching passages, without asking an agent to compose an answer.
Searches your knowledge directly and returns matching passages, without asking an agent to compose an answer.
No parameter schema in public metadata yet.
calypso-list-bucketsLists buckets for the team tied to the configured Calypso API key.
Lists buckets for the team tied to the configured Calypso API key.
No parameter schema in public metadata yet.
calypso-get-fileFetches one knowledge file's metadata and indexing status by file id.
Fetches one knowledge file's metadata and indexing status by file id.
No parameter schema in public metadata yet.
calypso-add-websiteIngests a website into a knowledge bucket, so page content becomes queryable alongside uploaded files.
Ingests a website into a knowledge bucket, so page content becomes queryable alongside uploaded files.
No parameter schema in public metadata yet.
calypso-create-bucketCreates an empty bucket for the create-then-fill workflow.
Creates an empty bucket for the create-then-fill workflow.
No parameter schema in public metadata yet.
calypso-create-agentCreates a Calypso agent variant bound to one or more buckets.
Creates a Calypso agent variant bound to one or more buckets.
No parameter schema in public metadata yet.
calypso-upload-fileUploads a file into the durable bucket-backed knowledge store and indexing pipeline.
Uploads a file into the durable bucket-backed knowledge store and indexing pipeline.
No parameter schema in public metadata yet.
calypso-upload-files-batchUploads 1 to 100 files into the durable knowledge store in one request.
Uploads 1 to 100 files into the durable knowledge store in one request.
No parameter schema in public metadata yet.
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CALYPSO_API_KEY*secretCalypso API key used to access the Calypso Responses API.
CALYPSO_API_BASE_URLOptional Calypso-compatible API base URL. Defaults to https://api.calypso.so/v1.
Readme
Calypso MCP Server
Hosted multimodal RAG for Claude Desktop, Cursor, and agent workflows — in one npx command.
Ask questions across PDFs, screenshots, charts, and diagrams, and upload new source material, without running a vector store, a Docker stack, or an OCR pipeline. Answers come back with citations you can check.
Details
- Repository
- github.com/calypso-so/calypso-mcp-server
- Categories
- AI & LLM Tools, Documents & Knowledge
- Package
@calypsohq/multimodal-rag-mcp-server- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active
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