preset-mcp 0.5.2

MCP server for Preset (Superset) — manage dashboards, charts, and datasets from Claude Code and other LLM agents

preset-mcp

MCP server for Preset (managed Apache Superset). Manage dashboards, charts, and datasets from Claude Code and other LLM agents.

Claude Code ──STDIO──> preset-mcp ──> Preset API

Setup for Claude Code

1. Get your Preset API credentials

1. Log in to app.preset.io
2. Go to Settings > API Keys
3. Create a new token/secret pair
4. Copy both the token and secret

2. Install from PyPI

uv tool install preset-mcp --with preset-cli --with fastmcp --with sqlglot --with pydantic

3. Register with Claude Code

claude mcp add --scope user -e PRESET_API_TOKEN=<your-token> \
  -e PRESET_API_SECRET=<your-secret> \
  preset-mcp -- preset-mcp

To auto-connect to a specific workspace on startup:

claude mcp add --scope user -e PRESET_API_TOKEN=<your-token> \
  -e PRESET_API_SECRET=<your-secret> \
  -e PRESET_WORKSPACE="Your Workspace Title" \
  preset-mcp -- preset-mcp

4. Verify

claude mcp list
# Should show: preset-mcp  ... 23 tools

Then in a Claude Code session, try:

> list my preset workspaces

Alternative: Install from source

git clone https://github.com/Evan-Kim2028/preset-mcp.git
cd preset-mcp
uv sync

claude mcp add --scope user -e PRESET_API_TOKEN=<your-token> \
  -e PRESET_API_SECRET=<your-secret> \
  preset-mcp -- uv run --directory /path/to/preset-mcp preset-mcp

Tools (23)

Workspace Navigation

Tool	Purpose
list_workspaces	List all workspaces you have access to
use_workspace	Switch to a workspace by title

Read

Tool	Purpose
list_dashboards	List dashboards (with progressive disclosure)
get_dashboard	Get detail for a single dashboard (supports response_mode)
list_charts	List charts
get_chart	Get detail for a single chart (supports response_mode)
list_datasets	List datasets
get_dataset	Get detail for a single dataset (columns, metrics, SQL)
list_databases	List database connections
get_database	Get detail for a single database connection
workspace_catalog	Relationship-aware topology map

Create

Tool	Purpose
create_dashboard	Create a new empty dashboard
create_dataset	Register a SQL query as a virtual dataset
create_chart	Build a chart from a dataset

Update

Tool	Purpose
update_dataset	Change a dataset's SQL, name, or description
update_chart	Change a chart's title, viz type, or parameters
update_dashboard	Rename or publish/unpublish a dashboard

SQL & Query

Tool	Purpose
run_sql	Execute a read-only SQL query through Preset's connection
query_dataset	Query a dataset using Superset's metric/dimension abstraction

Validation & Audit

Tool	Purpose
validate_chart	Validate a single chart via chart-data execution
validate_dashboard	Validate all charts on a dashboard
repair_dashboard_chart_refs	Repair stale dashboard chart ID references
snapshot_workspace	Full inventory dump for auditing

Typical Workflow

The intended workflow pairs preset-mcp with a data warehouse MCP (like igloo-mcp for Snowflake):

1. Explore data in Snowflake          (igloo-mcp)
2. Write and validate your SQL         (igloo-mcp)
3. workspace_catalog                   (preset-mcp) — understand what exists
4. list_databases                      (preset-mcp) — find the database_id
5. create_dataset                      (preset-mcp) — register the SQL
6. create_chart + create_dashboard     (preset-mcp) — build the viz
7. update_dataset / update_chart       (preset-mcp) — iterate

Features

Progressive Disclosure

All list and detail tools accept a response_mode parameter to control token usage:

• compact — IDs and names only (~80% fewer tokens)
• standard — Key metadata fields (default for list tools)
• full — Raw API response (default for detail tools)

list_dashboards(response_mode="compact")
→ {"count": 42, "data": [{"id": 1, "dashboard_title": "Revenue"}, ...]}

get_dashboard(dashboard_id=80, response_mode="standard")
→ key fields only, no position_json or json_metadata blobs

Detail tools (get_dashboard, get_chart, get_dataset, get_database) default to full for backward compatibility. Use standard or compact to avoid large payloads — dashboards with 20+ charts can return 50-100K chars in full mode.

SQL Safety

run_sql uses sqlglot for AST-based validation:

• Blocks write operations (INSERT, UPDATE, DELETE, DROP, ALTER, MERGE, TRUNCATE, GRANT, REVOKE)
• Detects multi-statement injection (SELECT 1; DROP TABLE x)
• Handles comment-wrapped bypasses (-- comment\nDELETE FROM x)
• Catches CTE-wrapped writes (WITH x AS (...) DELETE FROM y)

Structured Errors

Errors include error_type and hints[] so the LLM can self-recover:

{
  "error": "No workspace selected.",
  "error_type": "no_workspace",
  "hints": [
    "Call list_workspaces to see available workspaces.",
    "Then call use_workspace('Title') to select one."
  ]
}

Structured Logging

JSON logs on stderr (stdout is reserved for the STDIO transport):

{"ts":"2025-02-11 12:00:00","level":"INFO","msg":"tool=list_dashboards status=ok duration_ms=234"}

Configuration

All settings are overridable via environment variables:

Variable	Default	Purpose
PRESET_API_TOKEN	(required)	Preset API token
PRESET_API_SECRET	(required)	Preset API secret
PRESET_WORKSPACE	(optional)	Auto-connect to this workspace
PRESET_MCP_SQL_ROW_LIMIT	1000	Max rows from SQL queries
PRESET_MCP_SQL_SAMPLE_ROWS	5	Rows shown in standard mode
PRESET_MCP_TRUNCATION_THRESHOLD	50	Full-mode truncation cutoff
PRESET_MCP_TRUNCATION_TAIL	5	Tail rows kept when truncating
PRESET_MCP_LOG_LEVEL	INFO	Logging verbosity

Python Library

preset-mcp also works as a standalone Python library (no MCP required):

from preset_py import connect

ws = connect("My Workspace")
dashboards = ws.dashboards()
df = ws.run_sql("SELECT * FROM revenue LIMIT 10", database_id=1)

ws.create_dataset("daily_revenue", "SELECT ...", database_id=1)
ws.create_chart(dataset_id=5, title="Revenue", viz_type="echarts_timeseries_bar")

License

MIT