OMOP MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| PHI_MODE | No | Enable PHI queries (default false) | |
| BACKEND_TYPE | No | Database backend: bigquery, snowflake, or duckdb | |
| MAX_COST_USD | No | Maximum cost for BigQuery queries (default 1.0) | |
| OAUTH_ISSUER | No | OAuth issuer URL | |
| DUCKDB_SCHEMA | No | DuckDB schema (default main) | |
| OAUTH_AUDIENCE | No | OAuth audience | |
| SNOWFLAKE_USER | No | Snowflake username | |
| SNOWFLAKE_SCHEMA | No | Snowflake schema name (e.g., cdm) | |
| SNOWFLAKE_ACCOUNT | No | Snowflake account identifier | |
| ALLOW_PATIENT_LIST | No | Allow patient ID queries in production (default false) | |
| ATHENA_TIMEOUT_SEC | No | ATHENA API timeout (default 60) | |
| SNOWFLAKE_DATABASE | No | Snowflake database name | |
| SNOWFLAKE_PASSWORD | No | Snowflake password | |
| BIGQUERY_DATASET_ID | No | BigQuery dataset ID (e.g., omop_cdm) | |
| BIGQUERY_PROJECT_ID | No | GCP project ID for BigQuery | |
| SNOWFLAKE_WAREHOUSE | No | Snowflake warehouse name | |
| DUCKDB_DATABASE_PATH | No | DuckDB database path (default :memory:) | |
| OMOP_BLOCKED_COLUMNS | No | Comma-separated list of blocked PHI columns | |
| MAX_QUERY_TIMEOUT_SEC | No | Query timeout in seconds (default 30) | |
| STRICT_TABLE_VALIDATION | No | Enable strict table allowlist validation (default false) | |
| BIGQUERY_CREDENTIALS_PATH | No | Path to service account JSON file (optional, use ADC if empty) |
Capabilities
Server capabilities have not been inspected yet.
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
No tools | |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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