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monitoring-ingestion-pipeline

Guide for using the Grafana MCP to monitor and diagnose the Node.js ingestion pipeline workers in production. Use when investigating event lag, drops, pipeline errors, person/group processing, Kafka consumer health, Redis, Postgres, ClickHouse downstream health, or any ingestion worker question. Covers prod-us and prod-eu environments.

68

Quality

81%

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SKILL.md
Quality
Evals
Security

Quality

Content

62%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

Highly actionable and well-sequenced with strong validation feedback loops, but the main doc is verbose: it catalogs large amounts of discoverable topology inline rather than practicing the discovery-first approach it preaches, and would benefit from splitting stable-waypoint tables into reference files.

Suggestions

Move the deployment-roles, metric-prefix, Kafka/Redis/Postgres/ClickHouse topology, and dashboard-UID tables into dedicated reference files (e.g. references/topology.md, references/metric-catalog.md) and keep SKILL.md as a discovery-focused overview, practicing the discovery-first philosophy the intro advocates.

Trim or relocate the long dashboard-UID catalog and WarpStream-VC topic tables, which are static lookup data Claude can retrieve via search_dashboards / list_prometheus_metric_names rather than needing inline.

Cut explanatory asides that restate what Claude already knows (e.g. 'ClickHouse is the ultimate downstream consumer of events') to tighten token efficiency.

DimensionReasoningScore

Conciseness

The body is ~425 lines of dense reference tables (deployment roles, metric prefixes, Kafka/Redis/Postgres/ClickHouse topology, dashboard UIDs) that largely catalog facts Claude could discover live via the MCP tools the skill itself advocates; the stable-waypoints tables are heavily padded relative to the discovery-first philosophy stated in the intro.

2 / 5

Actionability

Discovery workflows give concrete, executable tool calls with exact datasource UIDs, regex patterns, and PromQL/LogQL examples (e.g. `list_prometheus_metric_names` with `datasourceUid: "victoriametrics"`, `{app=~"ingestion-.*"} |= "error"`), with minor gaps where some signals are only named, not exemplified.

4 / 5

Workflow Clarity

The discovery workflows are clearly sequenced (list metrics → label names → label values → query), and the playbooks (offloaded to the reference) provide ordered, validated investigation steps with explicit error-recovery feedback loops (e.g. single-partition lag: 'if lag growth continues unchanged after a restart, the cost is in the traffic itself').

5 / 5

Progressive Disclosure

The single references/investigation-playbooks.md link is well-signaled and one level deep, but the SKILL.md itself inlines ~300 lines of topology/reference tables (metric prefixes, dashboard UID lists, Kafka VC tables) that belong in separate reference files, leaving the overview heavier than ideal.

3 / 5

Total

14

/

20

Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, specific description that clearly states what the skill does, when to use it, and which environments it covers. Trigger terms map well to natural operator language and the niche is distinct.

DimensionReasoningScore

Specificity

Concrete actions are named ("monitor and diagnose," "investigating event lag, drops, pipeline errors, person/group processing, Kafka consumer health") and tied to specific subsystems (Redis, Postgres, ClickHouse, Kafka), giving comprehensive coverage of the skill's capabilities.

5 / 5

Completeness

It answers 'what' (guide for using Grafana MCP to monitor/diagnose ingestion workers) and 'when' ("Use when investigating event lag, drops, pipeline errors...") with concrete trigger phrases, and adds scope (prod-us/prod-eu).

5 / 5

Trigger Term Quality

It enumerates the natural phrases an operator would say ("event lag," "drops," "pipeline errors," "Kafka consumer health," "Redis," "Postgres," "ClickHouse") plus the Grafana MCP framing, covering synonyms and subsystem names users actually invoke.

5 / 5

Distinctiveness Conflict Risk

The Grafana-MCP + Node.js ingestion pipeline niche is highly specific with distinct triggers (ingestion worker questions, Kafka/Redis/Postgres/ClickHouse health), minimizing overlap with sibling skills.

5 / 5

Total

20

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
PostHog/posthog
Reviewed

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