Teradata MCP Server

A Model Context Protocol (MCP) server for Teradata database with OAuth 2.1 authentication, multiple authentication mechanisms (TD2, LDAP, Kerberos), and interactive data visualization.

Features

• Multiple Auth Mechanisms — TD2 (default), LDAP, Kerberos, JWT via Teradata LOGMECH
• OAuth 2.1 with Keycloak integration, JWT validation, scope-based authorization
• Protected Resource Metadata (RFC 9728 compliant)
• Interactive Visualization — ECharts-based MCP App with 19 chart types
• Connection Resilience — automatic retry with exponential backoff
• Non-blocking I/O — all DB operations run via asyncio.to_thread()
• Per-tool QueryBand — audit trail for Teradata workload management

Tools

Query Tools

• query — Execute SQL queries, return plain tabular results
• visualize_query — Execute SQL and render interactive ECharts charts via MCP App

Schema Tools

• list_db — List all databases
• list_tables — List tables/views in a database
• show_tables_details — Show column names and types for a table

Analysis Tools

• list_missing_values — Columns with NULL value counts
• list_negative_values — Columns with negative value counts
• list_distinct_values — Distinct category counts per column
• standard_deviation — Mean and standard deviation for a column

MCP App — Interactive Visualization

The visualize_query tool renders results as interactive charts in the MCP client.

Category	Charts
Bar	Basic, Grouped, Stacked, Horizontal, Sorted, Waterfall, Rounded, Polar
Line	Basic, Smooth, Area, Stacked Area, Step
Pie	Pie, Doughnut, Rose / Nightingale
Scatter	Scatter, Bubble
Mixed	Bar + Line

Quick Start

Installation

git clone https://github.com/arturborycki/mcp-teradata.git
cd mcp-teradata
uv sync

Run with TD2 (Standard Authentication)

uv run teradata-mcp "teradatasql://user:password@host/database"

Or via environment variable:

export DATABASE_URI="teradatasql://user:password@host/database"
uv run teradata-mcp

Configuration

Claude Desktop

Add to your claude_desktop_config.json:

TD2 (Username/Password)

{
  "mcpServers": {
    "teradata": {
      "command": "uv",
      "args": [
        "--directory", "/path/to/mcp-teradata",
        "run", "teradata-mcp"
      ],
      "env": {
        "DATABASE_URI": "teradatasql://user:password@host/database"
      }
    }
  }
}

LDAP Authentication

{
  "mcpServers": {
    "teradata": {
      "command": "uv",
      "args": [
        "--directory", "/path/to/mcp-teradata",
        "run", "teradata-mcp"
      ],
      "env": {
        "DATABASE_URI": "teradatasql://@host/database",
        "DB_LOGMECH": "LDAP",
        "DB_LOGDATA": "authcid=ldap_user password=ldap_password"
      }
    }
  }
}

The authcid format depends on the LDAP directory:

Directory	Format
Active Directory (Simple Bind)	authcid=user@domain.com
Active Directory (DIGEST-MD5)	authcid=DOMAIN\username
OpenLDAP / Sun DS	authcid=username

Kerberos Authentication

{
  "mcpServers": {
    "teradata": {
      "command": "uv",
      "args": [
        "--directory", "/path/to/mcp-teradata",
        "run", "teradata-mcp"
      ],
      "env": {
        "DATABASE_URI": "teradatasql://@host/database",
        "DB_LOGMECH": "KRB5"
      }
    }
  }
}

OAuth-Enabled Configuration

{
  "mcpServers": {
    "teradata": {
      "command": "uv",
      "args": [
        "--directory", "/path/to/mcp-teradata",
        "run", "teradata-mcp"
      ],
      "env": {
        "DATABASE_URI": "teradatasql://user:password@host/database",
        "OAUTH_ENABLED": "true",
        "KEYCLOAK_URL": "https://your-keycloak.example.com",
        "KEYCLOAK_REALM": "teradata-realm",
        "KEYCLOAK_CLIENT_ID": "teradata-mcp",
        "KEYCLOAK_CLIENT_SECRET": "your-secret",
        "OAUTH_RESOURCE_SERVER_URL": "https://your-mcp-server.example.com"
      }
    }
  }
}

Environment Variables

Database Connection

Variable	Description	Default
DATABASE_URI	Teradata connection URL (teradatasql://user:pass@host/db)	—
DB_LOGMECH	Authentication mechanism: TD2, LDAP, KRB5, TDNEGO, JWT	TD2
DB_LOGDATA	LDAP/JWT credentials (e.g., authcid=user password=pass)	—
DB_SSL_MODE	TLS mode: ALLOW, PREFER, REQUIRE, VERIFY-CA, VERIFY-FULL	—
DB_ENCRYPT_DATA	Enable transport encryption	true

Connection Resilience

Variable	Description	Default
DB_MAX_RETRIES	Max reconnection attempts	3
DB_INITIAL_BACKOFF	Initial backoff delay (seconds)	1.0
DB_MAX_BACKOFF	Max backoff delay (seconds)	30.0

MCP Transport

Variable	Description	Default
MCP_TRANSPORT	Transport: stdio, sse, streamable-http	stdio
MCP_HOST	Bind address for HTTP transports	localhost
MCP_PORT	Port for HTTP transports	8000
MCP_PATH	Path for streamable-http	/mcp/

OAuth 2.1

Variable	Description	Default
OAUTH_ENABLED	Enable OAuth authentication	false
KEYCLOAK_URL	Keycloak server URL	—
KEYCLOAK_REALM	Keycloak realm name	—
KEYCLOAK_CLIENT_ID	OAuth client ID	—
KEYCLOAK_CLIENT_SECRET	OAuth client secret	—
OAUTH_RESOURCE_SERVER_URL	Resource server URL	—
OAUTH_REQUIRED_SCOPES	Required scopes (comma-separated)	—
OAUTH_VALIDATE_AUDIENCE	Validate token audience	true
OAUTH_VALIDATE_SCOPES	Validate token scopes	true
OAUTH_REQUIRE_HTTPS	Require HTTPS for OAuth URLs	true
CORS_ALLOWED_ORIGINS	CORS allowed origins	*

OAuth Scopes

Scope	Description
teradata:read	Read access to database resources
teradata:write	Write access to database resources
teradata:query	Execute SQL queries
teradata:admin	Administrative access
teradata:schema	Schema management operations

Transport Compatibility

Transport	OAuth	Discovery Endpoints	Use Case
stdio	N/A	N/A	Claude Desktop, CLI clients
SSE	Full	Available	Web applications
Streamable HTTP	Full	Available	API integrations

Discovery endpoints (when OAuth enabled):

• /.well-known/oauth-protected-resource — RFC 9728 metadata
• /.well-known/mcp-server-info — MCP capabilities
• /health — Health check

Docker Deployment

Development

docker compose up -d

With OAuth

docker compose -f docker-compose.oauth.yml up -d

Build

uv build

Troubleshooting

Database connection issues:

• Verify DATABASE_URI format: teradatasql://user:pass@host/database
• Check network connectivity to Teradata server
• For LDAP: ensure DB_LOGMECH=LDAP and DB_LOGDATA are set correctly
• Connection issues are automatically retried (configurable via DB_MAX_RETRIES)

LDAP authentication fails:

• Verify the Teradata server has LDAP configured in TDGSS
• Check authcid format matches your directory type
• Escape special characters in passwords (@ → \@, spaces → use quotes)

Permission denied errors:

• Verify user has required OAuth scopes
• Check Keycloak role assignments
• visualize_query requires teradata:query scope (not just teradata:read)

Debug logging:

export LOG_LEVEL=DEBUG
uv run teradata-mcp

License

MIT License. See LICENSE for details.

Acknowledgments

• Model Context Protocol
• Keycloak
• Teradata
• FastMCP