GitHub - besslframework-stack/project-tessera: Tessera — Personal knowledge RAG as an MCP server for Claude Desktop

https://github.com/besslframework-stack/project-tessera • Mar 8, 2026 07:39

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Tessera — Personal knowledge RAG as an MCP server for Claude Desktop - besslframework-stack/project-tessera

Resumen

Resumen Principal

Tessera es una solución innovadora diseñada para potenciar Claude Desktop, permitiéndole recordar y buscar eficientemente a través del extenso espacio de trabajo local de un usuario. Resuelve la limitación inherente de Claude para buscar en cientos de documentos propios (PRDs, notas, logs de decisiones), actuando como un puente esencial. Este software

Contenido

Make Claude Desktop remember your entire workspace.

You have hundreds of documents — PRDs, meeting notes, decision logs, session records. Claude Desktop can read files you attach, but it can't search across your whole workspace. Tessera bridges that gap.

It indexes your local documents into a vector store and connects to Claude Desktop via MCP. When you ask a question, Claude automatically searches your files and answers with context — and remembers across sessions.

Why Tessera?

Zero external dependencies — No Ollama, no Docker, no API keys. Just pip install and go.
Cross-session memory — Claude remembers your decisions, preferences, and context between conversations.
Knowledge graph — Visualize how your documents connect to each other.
100% local — Everything stays on your machine. Nothing leaves your laptop.

How it works

You point Tessera at your document folders (Markdown, CSV, session logs)
Tessera indexes them locally using fastembed (ONNX) + LanceDB
Claude Desktop searches them automatically via MCP tools
Only changed files are re-indexed on each sync

Get started

Install + Setup

git clone https://github.com/besslframework-stack/project-tessera.git
cd project-tessera

python3 -m venv .venv && source .venv/bin/activate
pip install -e .

tessera init

tessera init walks you through everything:

Picks your document root directory
Scans for folders with documents
Lets you choose which to index
Downloads the embedding model (~220MB, once)
Generates workspace.yaml automatically
Shows you the Claude Desktop config snippet
Offers to index immediately

Connect to Claude Desktop

tessera init prints the config snippet. Add it to your claude_desktop_config.json:

{
  "mcpServers": {
    "tessera": {
      "command": "/path/to/project-tessera/.venv/bin/python",
      "args": ["/path/to/project-tessera/mcp_server.py"]
    }
  }
}

Restart Claude Desktop. You'll see "tessera" in the MCP integrations.

What Claude can do with Tessera

Tool	What it does
Search
`search_documents`	Semantic + keyword hybrid search across all your docs
`read_file`	Read any file's full content
`list_sources`	See what's indexed
Memory
`remember`	Save knowledge that persists across sessions
`recall`	Search past memories from previous conversations
`learn`	Auto-learn: save and immediately index new knowledge
Knowledge Graph
`knowledge_graph`	Build a Mermaid diagram of document relationships
`explore_connections`	Show connections around a specific topic
Indexing
`ingest_documents`	Index your documents (first-time setup or full rebuild)
`sync_documents`	Incremental sync — only re-index changed files
Workspace
`project_status`	See what's changed recently in each project
`extract_decisions`	Find past decisions from logs
`audit_prd`	Check PRD quality (section coverage, versioning)
`organize_files`	Move, rename, archive files
`suggest_cleanup`	Detect backup files, empty dirs, misplaced files

CLI commands

tessera init                    # Interactive setup
tessera ingest                  # Index all configured sources
tessera ingest --path ./docs    # Index a specific directory
tessera sync                    # Re-index only changed files
tessera status                  # Show all projects
tessera status my_project       # Show one project's status

Architecture

Your documents (Markdown, CSV)
        |
   Parse & chunk (~800 chars)
        |
   Embed locally (fastembed/ONNX)
        |
   Store in LanceDB (local vector DB)
        |
   Expose via MCP server
        |
   Claude Desktop searches automatically

Configuration

After tessera init, your workspace.yaml looks like:

workspace:
  root: /Users/you/Documents
  name: my-workspace

sources:
  - path: project-alpha
    type: document
    project: project_alpha

projects:
  project_alpha:
    display_name: Project Alpha
    root: project-alpha

Edit it anytime to add/remove sources. Run tessera sync after changes.

License

AGPL-3.0 — see LICENSE.

For commercial licensing: bessl.framework@gmail.com