ClickStack

Minor Changes

• 2d17de5d7: feat: serve PromQL label lookups from ClickHouse's Prometheus HTTP API

On ClickHouse 26.9+ with the prometheus_api_v1 handler, /labels and /label/:name/values for a ClickHouse-backed PromQL source now proxy to the handler instead of querying the TimeSeries tags table with SQL. Older servers, servers without the handler, and sources set to table-function keep the SQL path, so a source that runs queries over HTTP on 26.6-26.8 still gets label autocomplete.

• db4e7ba67: chore: upgrade bundled ClickHouse to 26.10.3.7

The all-in-one image and the Docker Compose files now use

clickhouse/clickhouse-server:26.10.3.7-alpine. New TimeSeries tables default

to schema version 8, which keeps each series' time range in a separate inner

table; existing tables keep their layout. system.metric_log switches to the

bucketed schema, and rows from before the upgrade move to system.metric_log_0.

Patch Changes

• c17fc16a2: fix: {{note}} in webhook bodies now contains the alert's note when the alert

fires, not only in "Send test"

• 1fba1c381: fix: mark the MCP clickstack_save_webhook and clickstack_save_alert tools as open-world

Saved webhooks and alerts send HTTP requests to third-party endpoints, so both tools now declare openWorldHint: true.

• 7b03880eb: feat: read the MCP PromQL label catalog from ClickHouse's Prometheus HTTP API

describe_source on a ClickHouse-backed PromQL source now lists label and metric names through the prometheus_api_v1 handler on ClickHouse 26.9+, and falls back to SQL on older servers, servers without the handler, and sources set to table-function.

• ac913ceb3: feat: Choose how a PromQL source on ClickHouse is evaluated (the Prometheus HTTP API or the prometheusQuery table functions) instead of probing the server on every query. Without a choice the server is still probed, but the answer is now kept for 5 minutes. A source set to the HTTP API against a server that does not serve it fails with a clear error. Onboarding pins a PromQL source it detects to the HTTP API when the server serves it.
• 7cfd333ea: fix(mcp): drop the health verdict from clickstack_service_health

The tool no longer labels services critical, degraded or healthy, and no longer

tells agents a service needs "no action". Each service keeps its threshold

flags, score and a factual summary, so agents reason from the numbers instead of

a verdict that service-wide totals can get wrong. summary.statusCounts is

replaced by summary.servicesFlagged, and the span attributes

mcp.service_health.critical_count and mcp.service_health.degraded_count are

replaced by mcp.service_health.flagged_count.

• Updated dependencies [2d17de5d7]
• Updated dependencies [ac913ceb3]
• @hyperdx/common-utils@0.35.0