Tiger Data MCP Server

# Add repository curl -s https://packagecloud.io/install/repositories/timescale/tiger-cli/script.rpm.sh | sudo os=rpm_any dist=rpm_any bash # Install tiger-cli sudo yum install tiger-cli

go install github.com/timescale/tiger-cli/cmd/tiger@latest

To upgrade an existing installation to the latest release:

This downloads the latest published binary, verifies its checksum, and replaces the currently running binary in place. If Tiger CLI was installed via a package manager (Homebrew, apt, yum/dnf),tiger upgradewill instead point you at the matching package-manager command.

After installing Tiger CLI, authenticate with your Tiger Cloud account:

# Login to your Tiger account tiger auth login # View available commands tiger --help # List your database services tiger service list # Create a new database service tiger service create --name my-database # Get connection string tiger db connection-string # Connect to your database tiger db connect # Install the MCP server tiger mcp install

Tiger CLI provides the following commands:

- tiger auth- Authentication management

- login- Log in to your Tiger account
- logout- Log out from your Tiger account
- status- Show current authentication status and project ID (alias:whoami)

- list- List all services (alias:ls)
- create- Create a new service
- get- Show detailed service information (aliases:describe,show)
- fork- Fork an existing service
- start- Start a stopped service (alias:resume)
- stop- Stop a running service (alias:pause)
- resize- Resize service CPU and memory allocation
- delete- Delete a service (alias:rm)
- update-password- Update service master password
- logs- View service logs (alias:log)

- connect- Connect to a database with psql (in an interactive terminal, if the service has read replicas, offers to connect to one of them; use--no-replica-promptto skip) (alias:psql)
- connection-string- Get connection string for a service (alias:uri)
- test-connection- Test database connectivity (aliases:test,ping)
- schema- Display database schema information (tables, views, indexes, functions, TimescaleDB hypertables, and more)
- save-password- Save a database password to configured password storage (keyring, pgpass, or none)
- create role- Create a new database role, with optional read-only enforcement, inherited grants (--from), and statement timeout (alias:create user)

- show- Show current configuration (aliases:list,ls)
- set- Set configuration value
- unset- Remove configuration value (aliases:rm,delete)
- reset- Reset configuration to defaults (alias:clear)

- install- Install and configure MCP server for an AI assistant (alias:add)
- start- Start the MCP server
- list- List available MCP tools, prompts, and resources (alias:ls)
- get- Get detailed information about a specific MCP capability (aliases:describe,show)

Usetiger <command> --helpfor detailed information about each command.

Tiger CLI includes a Model Context Protocol (MCP) server that enables AI assistants like Claude Code to interact with your Tiger Cloud infrastructure. The MCP server provides programmatic access to database services and operations.

Configure the MCP server for your AI assistant:

# Interactive installation (prompts for client selection) tiger mcp install # Or specify your client directly tiger mcp install claude-code # Claude Code tiger mcp install codex # Codex tiger mcp install cursor # Cursor IDE tiger mcp install gemini # Gemini CLI tiger mcp install vscode # VS Code tiger mcp install windsurf # Windsurf

After installation, restart your AI assistant to activate the Tiger MCP server.

If your MCP client is not supported bytiger mcp install, follow the client's instructions for installing MCP servers. Usetiger mcp startas the command to start the MCP server. For example, many clients use a JSON file like the following:

- view_skill- Retrieve comprehensive guides for Postgres and TimescaleDB features and best practices
- search_docs- Search PostgreSQL and TimescaleDB documentation using natural language queries

This proxy connection is enabled by default and requires no additional configuration.

The CLI stores configuration in~/.config/tiger/config.yamlby default, and supports hierarchical configuration through environment variables and command-line flags.

# Show current configuration tiger config show # Set configuration values tiger config set output json # Remove configuration value tiger config unset output # Reset to defaults tiger config reset

All configuration options can be set viatiger config set <key> <value>:

- analytics- Enable/disable analytics (default:true)
- color- Enable/disable colored output (default:true)
- docs_mcp- Enable/disable docs MCP proxy (default:true)
- mcp_max_rows- Maximum number of rows thedb_execute_queryMCP tool returns per result set before truncating, to limit how much data lands in an AI agent's context. Only applies to the MCP tool, not CLI commands. Default:100
- output- Output format:json,yaml, ortable(default:table)
- password_storage- Password storage method:keyring,pgpass, ornone(default:keyring)
- read_only- Whentrue, mutating operations are refused: thetiger service create/fork/start/stop/resize/update-password/deleteCLI commands return an error, and their MCP equivalents are not registered, so they don't appear intools/listand can't be called.tiger db connect,tiger db connection-string, and thedb_execute_queryMCP tool open the database session in Tiger Cloud's immutable read-only mode (writes and DDL are rejected by the server). Read commands/tools are unaffected —tiger db schemaand thedb_schemaMCP tool always open a read-only session regardless of this setting. Default:false.
- service_id- Default service ID
- version_check- Whentrue, the CLI checks for a newer version on each invocation (in an interactive terminal) and prints a notice if one is available. Set tofalseto disable. Default:true.

Environment variables override configuration file values. All variables use theTIGER_prefix:

- TIGER_ANALYTICS- Enable/disable analytics
- TIGER_COLOR- Enable/disable colored output
- TIGER_CONFIG_DIR- Path to configuration directory (default:~/.config/tiger)
- TIGER_DOCS_MCP- Enable/disable docs MCP proxy
- TIGER_OUTPUT- Output format:json,yaml, ortable
- TIGER_PASSWORD_STORAGE- Password storage method:keyring,pgpass, ornone
- TIGER_READ_ONLY- Whentrue, write/destructive CLI commands return an error, the corresponding Tiger MCP write tools are not registered, anddb_execute_queryruns against a read-only database connection
- TIGER_PUBLIC_KEY- Public key to use for authentication (takes priority over stored credentials)
- TIGER_SECRET_KEY- Secret key to use for authentication (takes priority over stored credentials)
- TIGER_SERVICE_ID- Default service ID
- TIGER_VERSION_CHECK- Whentrue, the CLI checks for a newer version on each invocation (in an interactive terminal) and prints a notice if one is available;falseto disable

These flags are available on all commands and take precedence over both environment variables and configuration file values:

- --analytics- Enable/disable analytics
- --color- Enable/disable colored output
- --config-dir <path>- Path to configuration directory (default:~/.config/tiger)
- --password-storage <method>- Password storage method:keyring,pgpass, ornone
- --service-id <id>- Specify service ID
- --skip-update-check- Skip checking for updates on startup (default:false)
- -h, --help- Show help information

We welcome contributions! Here's how to get started:
- Fork the repository
- Create a feature branch
- Make your changes
- Add tests for new functionality
- Ensure all tests pass (go test ./...)
- Submit a pull request

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