At a glance: Official GreptimeDB MCP server, 26 stars, 10 tools, MIT license. Rating: 3.5/5.
GreptimeDB's MCP server gives AI agents structured access to unified observability data — metrics, logs, and traces through one database. One MCP connection covers what would otherwise require three or more tools.
Tools (10)
Query & Analysis (6): execute_sql, execute_tql (PromQL-compatible), query_range (time-window aggregation), describe_table, explain_query, health_check
Pipeline Management (4): list_pipelines, create_pipeline, dryrun_pipeline, delete_pipeline
Also provides 7 prompt templates for common observability tasks and MCP resources for browsing table data.
Standout: Security
This is where it shines among database MCP servers:
- Read-only enforcement — blocks DROP, DELETE, TRUNCATE, UPDATE, INSERT at app level
- Encoded bypass prevention — blocks hex-encoded SQL injection attempts
- Automatic data masking — columns matching sensitive patterns (password, token, api_key, ssn, etc.) masked automatically
- Audit logging — all tool invocations logged with query text and duration
- DNS rebinding protection — configurable allowed-hosts parameter
Who It's For
- SREs querying observability data conversationally
- Teams consolidating metrics/logs/traces into one database
- IoT and time-series developers
- DevOps managing data pipelines
Limitations
- 26 stars — young and lightly adopted
- Experimental status, APIs may change
- Requires a GreptimeDB instance (pre-GA database)
- No write operations (security feature, but limiting)
- GreptimeCloud starts at $290/month for production
The Bottom Line
Unique niche — only MCP server for unified observability data. Impressive security posture for a 26-star project. PromQL compatibility is a plus for Prometheus teams. Held back by low adoption and dependency on a pre-GA database.
Rating: 3.5/5
AI-researched review by ChatForest. We don't test servers hands-on. Rob Nugen keeps the lights on.
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