tableau-graphql-mcp 0.1.1

Ask any Tableau lineage question, in any MCP client, through the Tableau Metadata API (GraphQL).

tableau-graphql-mcp

Ask any Tableau lineage question, in any MCP client, through the Tableau Metadata API.

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tableau-graphql-mcp turns your Tableau site's Metadata API into a set of MCP tools, so an AI assistant (Claude, Cursor, Cline, and others) can answer lineage questions in plain language:

• "If I drop the column SALES, which workbooks break?"
• "What tables does the Sales Overview workbook depend on?"
• "Which calculated fields reference Profit, and on which dashboards?"
• "Who should I notify before changing the DIM_CUSTOMER table?"

It ships seven curated tools: a universal GraphQL passthrough, live schema introspection, an embedded library of correct query templates, a robust where_used resolver, a multi-hop impact_analysis, a substring content search, and a connection probe. Together they let the model answer any lineage question, not just a fixed menu.

Why it's different

• Any question, done right. graphql_query runs any read-only GraphQL; introspect_schema and a built-in cheat-sheet plus 28 worked examples keep the model's queries correct.
• True impact analysis (multi-hop). impact_analysis follows the whole dependency chain — a calc built on a calc built on a column is included — and returns the full blast radius plus the de-duplicated owners to notify, not just direct references.
• Works everywhere. Tableau Server and Cloud. The REST API version and the GraphQL endpoint (/api/metadata/graphql, with a /relationship-service-war/graphql fallback) are auto-detected.
• Robust lineage without Catalog. where_used resolves workbooks via core lineage (referencedByFields -> sheets -> workbook), so it works even when the Data Management add-on's downstreamWorkbooks is empty.
• No silent truncation. graphql_query flags partial_results when a query hits the node limit, and search_content reports scanned/total coverage — so a truncated answer is never mistaken for a complete one.
• Tiny and safe. Read-only, stdio-only (no inbound port), secrets from env only, and no dependencies beyond the MCP SDK (stdlib urllib for HTTP).

Quickstart

You need uv (curl -LsSf https://astral.sh/uv/install.sh | sh) and a Tableau Personal Access Token.

Claude Code, one line:

claude mcp add tableau-graphql \
  -e TABLEAU_SERVER=https://10ax.online.tableau.com \
  -e TABLEAU_SITE_CONTENT_URL=YourSite \
  -e TABLEAU_PAT_NAME=my-token \
  -e TABLEAU_PAT_SECRET=the-full-secret \
  -- uvx tableau-graphql-mcp

That's all. uvx fetches the package from PyPI and runs it in an isolated environment; nothing to clone or install (and no git required). Then ask Claude a lineage question.

Configuration

All configuration is via environment variables (set them in your client's env block, never on the command line).

Env var	Required	Default	Description
TABLEAU_SERVER	yes	n/a	https://tableau.company.com (Server) or https://<pod>.online.tableau.com (Cloud).
TABLEAU_SITE_CONTENT_URL	no	""	Site slug (the part after /#/site/). Empty = Default site (Server only); Cloud always has one.
TABLEAU_PAT_NAME	yes¹	n/a	Personal Access Token name.
TABLEAU_PAT_SECRET	yes¹	n/a	PAT secret: the whole string, do not split on :.
TABLEAU_TIMEOUT	no	60	Per-request timeout (seconds).
TABLEAU_API_VERSION	no	auto	REST API version; else read from /api/serverinfo.
TABLEAU_METADATA_PATH	no	auto	Override the GraphQL path; else auto-detected.
TABLEAU_AUTH_TOKEN	no	n/a	Advanced: a pre-obtained X-Tableau-Auth token (SSO tenants where PATs are disabled).
TABLEAU_COOKIE	no	n/a	Advanced: a browser session cookie (SSO fallback).

¹ Provide a PAT (TABLEAU_PAT_NAME + TABLEAU_PAT_SECRET) or an advanced TABLEAU_AUTH_TOKEN / TABLEAU_COOKIE.

Claude Desktop

Edit claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\):

{
  "mcpServers": {
    "tableau-graphql": {
      "command": "uvx",
      "args": ["tableau-graphql-mcp"],
      "env": {
        "TABLEAU_SERVER": "https://10ax.online.tableau.com",
        "TABLEAU_SITE_CONTENT_URL": "YourSite",
        "TABLEAU_PAT_NAME": "my-token",
        "TABLEAU_PAT_SECRET": "the-full-secret"
      }
    }
  }
}

Fully quit and reopen Claude Desktop, then check the tools menu.

Cursor · Cline · Windsurf

Every client uses the same mcpServers schema shown above. Add the same block to:

• Cursor: ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
• Cline: the MCP Servers panel, then Configure, into cline_mcp_settings.json.
• Windsurf: ~/.codeium/windsurf/mcp_config.json.

On Windows, if uvx isn't found by the GUI app, use its absolute path (e.g. %USERPROFILE%\.local\bin\uvx.exe).

Tools

Tool	What it does	Key args
graphql_query	Run any read-only Metadata API GraphQL query. The general tool for any lineage question.	query, variables
introspect_schema	Live schema introspection: list entry points, or a type's exact fields.	type_name
lineage_examples	A schema cheat-sheet plus 28 curated question-to-GraphQL templates (8 categories).	category
where_used	Which workbooks/datasources use given column / field / table names (robust one-hop core-lineage resolution).	names
impact_analysis	Full transitive multi-hop blast radius of a column/field/table: every dependent field, plus affected sheets, dashboards, workbooks, and owners to notify.	name
search_content	Find content whose name contains a term (case-insensitive substring), across workbooks, datasources, tables (and optionally fields/columns), with coverage numbers.	term, types
server_info	Connected server, site, versions, endpoint, auth, and whether Catalog lineage is available.	none

All tools are read-only. The Metadata API has no mutations.

Example prompts

Once connected, try:

• "Use server_info to confirm what you're connected to."
• "Search for anything with 'revenue' in the name."
• "Which workbooks use the columns SALES, PROFIT and DISCOUNT? Group by owner."
• "Show me the field-to-source-column map for the 'Sales Overview' workbook."
• "List every calculated field in that workbook with its formula."
• "Which published datasources feed workbooks in the Analytics project, and which are uncertified?"
• "Run impact_analysis on the 'Profit Ratio' field: every dependent sheet, dashboard, workbook, and owner to notify."
• "What is the blast radius of dropping the DIM_CUSTOMER table: workbooks, sheets, and owners to notify?"

Architecture

The server speaks MCP over stdio to the client and HTTPS to Tableau: it signs in with your PAT to get an X-Tableau-Auth token (auto-refreshed on expiry), auto-detects the REST API version and the GraphQL endpoint, then forwards queries to the Metadata API. Nothing is stored; every answer is live.

Security

• Read-only, enforced. Only GraphQL queries: no writes, no shell. graphql_query rejects mutation/subscription operations, and the Metadata API is query-only regardless.
• Local and stdio-only. No inbound network port is opened.
• Secrets from env only. Never passed as tool arguments, never logged, never returned in output.
• Least privilege. The PAT inherits your Tableau permissions; the API only returns content you can see.
• Pin a version in production: uvx tableau-graphql-mcp==0.1.0.

See SECURITY.md.

Troubleshooting

Symptom	Fix
Server doesn't appear	Fully quit and relaunch the client; check the config path and JSON validity.
spawn uvx ENOENT	Install uv, or use the absolute path to uvx.
Sign-in fails (401)	Check the PAT name/secret and TABLEAU_SITE_CONTENT_URL. On SSO tenants PATs may be disabled; use TABLEAU_AUTH_TOKEN/TABLEAU_COOKIE.
"Could not reach the Metadata API"	On Tableau Server, an admin must enable it: tsm maintenance metadata-services enable. On Cloud it is always on.
Empty downstreamWorkbooks	Expected without the Data Management add-on; use the where_used tool, which resolves via core lineage.

Inspect the server directly with the MCP Inspector:

npx @modelcontextprotocol/inspector uvx tableau-graphql-mcp

Development

git clone https://github.com/tdries/tableau-graphQL-mcp && cd tableau-graphQL-mcp
uv sync --all-extras
uv run tableau-graphql-mcp                     # run from source
uv run pytest --cov=tableau_graphql_mcp        # tests + coverage (offline; no Tableau needed)
uv run ruff check .                            # lint
uv run ruff format --check .                   # format

The same three gates (lint, format, tests with a 85% coverage floor) run in CI across Linux/macOS/Windows and Python 3.10 to 3.13. Coverage is reported to Codecov and the code is scanned by CodeQL on every push.

The same gates run in CI (Linux/macOS/Windows, Python 3.10 to 3.13): ruff check, ruff format --check, mypy --strict, and pytest with a coverage floor. The package ships a PEP 561 py.typed marker, so importing it gives your type checker full types.

Contributions welcome: see CONTRIBUTING.md and the Code of Conduct.

Roadmap

• Publish to PyPI (uvx tableau-graphql-mcp) and list on the official MCP registry
• Optional Data Management path: richer downstreamWorkbooks when Catalog is present
• More curated query templates in lineage_examples
• Optional response caching for repeated introspection within a session

Ideas and votes welcome in Discussions.

License

MIT © Tim Dries. Built at Biztory.