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cql-mcp

cql-mcp

by stackblaze
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Remote

CQL MCP Server

Stackblaze MCP server for Cassandra / Scylla (CQL). Built for the kubero chat feature-MCP broker: one long-lived Deployment serves every CQL add-on via per-request X-Kubero-DB-URI / X-Kubero-Access-Mode headers.

See FORK.md for kubero integration details.

Tools

Read (restricted + unrestricted):

  • cluster_info — release version + connection details

  • list_keyspaces

  • list_tables

  • describe_table

  • execute_cql — SELECT only in restricted mode

Write (unrestricted only):

  • execute_cql — INSERT/UPDATE/DELETE and other DML/DDL

  • create_keyspace / drop_keyspace

  • create_table / drop_table / truncate_table

In chat these are prefixed cql__* (e.g. cql__list_keyspaces).

Related MCP server: Read-only Database MCP

Local dev

pip install -r requirements.txt
export CQL_HOST=localhost CQL_PORT=9042 CQL_USER=cassandra CQL_PASSWORD=cassandra
python main.py

HTTP + connection-from-request (matches k8s Deployment):

python main.py --transport streamable-http --connection-from-request \
  --streamable-http-host 0.0.0.0 --streamable-http-port 3010

Deploy

deploy/ manifests → ClusterIP cql-mcp:3010 in kubero-mcp. Image: ghcr.io/stackblaze/cql-mcp:<tag>.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

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