@cyanheads/chembl-mcp-server
by cyanheads
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| LOGS_DIR | No | Directory for log files (Node.js only). | <project-root>/logs |
| OTEL_ENABLED | No | Enable OpenTelemetry instrumentation. | false |
| MCP_AUTH_MODE | No | Auth mode: none, jwt, or oauth. | none |
| MCP_HTTP_PORT | No | Port for the HTTP server. | 3010 |
| MCP_LOG_LEVEL | No | Log level (RFC 5424). | info |
| MCP_TRANSPORT_TYPE | No | Transport: stdio or http. | stdio |
| CHEMBL_API_BASE_URL | No | Base URL for the ChEMBL REST data API. Override for a private mirror or pinned host. | https://www.ebi.ac.uk/chembl/api/data |
| CANVAS_PROVIDER_TYPE | No | Set to 'duckdb' to enable the bioactivity spill and the chembl_dataframe_* SQL tools. When 'none', large sets inline a preview but never spill. | none |
| CHEMBL_DEFAULT_LIMIT | No | Default result limit applied when callers omit it. | 25 |
| CHEMBL_MAX_PAGE_SIZE | No | ChEMBL per-page cap when streaming activity pages for the spill (max 1000). | 1000 |
| CHEMBL_REQUEST_TIMEOUT_MS | No | Per-request timeout in milliseconds for upstream ChEMBL fetches. | 30000 |
| CHEMBL_DATAFRAME_DROP_ENABLED | No | Register the opt-in chembl_dataframe_drop tool (absent from tools/list when off). | false |
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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