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tracing-downstream-lineage

Trace downstream data lineage and impact analysis. Use when the user asks what depends on this data, what breaks if something changes, downstream dependencies, or needs to assess change risk before modifying a table or DAG.

67

Quality

84%

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SKILL.md
Quality
Evals
Security

Quality

Content

75%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.

A well-structured, actionable instruction skill with a clear step sequence and concrete commands for the common cases. Weaker spots are the high-level BI-tool and stakeholder-lookup steps and the lack of explicit verification checkpoints before reporting impact.

Suggestions

Add a verification checkpoint to the workflow (e.g., re-run `af dags source` against each discovered consumer to confirm the dependency tree is complete before categorizing) to strengthen workflow_clarity.

Make the vague guidance executable: replace 'Look for BI tool connections' with concrete checks (specific dashboard naming patterns to grep for, or a command/metadata query), and give a concrete source for dashboard owners rather than 'Usually in BI tool metadata'.

Tighten conciseness by removing one of the two ASCII dependency diagrams and trimming the illustrative example rows in the output tables to one row each.

DimensionReasoningScore

Conciseness

The body is efficient and imperative with no basic-concept padding, but the duplicate ASCII diagrams (the Step 2 dependency tree and the Output impact diagram) and illustrative table rows could be trimmed. Mostly efficient with minor over-explanation fits anchor 4.

4 / 5

Actionability

Concrete executable guidance exists (`af dags list`, `af dags source <dag_id>`, the information_schema.view_table_usage SQL), but steps like "Look for BI tool connections" and "Dashboard owners: Usually in BI tool metadata" remain high-level hints. Mostly executable with minor gaps fits anchor 4.

4 / 5

Workflow Clarity

The five-step sequence (identify consumers, build tree, categorize, assess risk, find stakeholders) is clearly ordered and ends in a defined output report, but there are no explicit validation checkpoints (e.g., confirming the consumer search is exhaustive). Anchor 4 fits; anchor 5 requires explicit validation steps and feedback loops.

4 / 5

Progressive Disclosure

Sections are well-organized with headers and no nested or broken references, and no bundle files exist so nothing points to missing files. However, at ~155 lines everything is inlined — the output-report template and criticality rubric could live in a reference file — and the under-50-line simple-skill exception does not apply, fitting anchor 4.

4 / 5

Total

16

/

20

Passed

Description

86%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 description with an explicit what/when split and natural trigger phrasing. The only gaps are a slightly thin action list and mild overlap risk with the sibling upstream-lineage skill.

DimensionReasoningScore

Specificity

"Trace downstream data lineage and impact analysis" names the domain plus two concrete actions, matching the anchor for 1-2 concrete actions. It does not list several specific actions, so anchor 4 is not reached.

3 / 5

Completeness

It explicitly answers both what ("Trace downstream data lineage and impact analysis") and when ("Use when the user asks what depends on this data, what breaks if something changes...") with concrete trigger phrases, mirroring the anchor-5 example structure.

5 / 5

Trigger Term Quality

"what depends on this data", "what breaks if something changes", "downstream dependencies", "change risk", and "table or DAG" give comprehensive, natural phrasing with synonyms users would actually say.

5 / 5

Distinctiveness Conflict Risk

"Downstream" establishes a clear niche distinct from generic lineage work, but a companion upstream-lineage skill means a bare "trace lineage" request could overlap; the "downstream" keyword mostly disambiguates, fitting anchor 4.

4 / 5

Total

17

/

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.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

astronomer/agents

Path

skills/tracing-downstream-lineage/SKILL.md

Reviewed

Table of Contents

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