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chart-rendering

Visualise the result of an analysis as a chart (line, bar, area, scatter, etc.). Use when the user asks to "plot...", "chart...", "show me the trend of...", "visualise...", or when a numerical result has more than ~10 rows and would be easier to read as a picture. Produces an image file plus the script that generated it.

Quality

88%

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Passed

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SKILL.md
Quality
Evals
Security

Quality

Content

86%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, token-efficient SOP that assumes Claude's competence and gives exact paths, parameters, and conventions. The main gaps are the absence of an executable example script and of explicit post-render validation checkpoints, which keep actionability and workflow clarity just below full marks.

Suggestions

Add a short copy-paste-ready matplotlib snippet (one full example script for a line chart with title, labelled axes, and the specified save call) to lift actionability to fully executable.

Add an explicit validation step after rendering (e.g. confirm the PNG exists and is non-empty, and check the data frame is non-empty before plotting) to close the workflow-clarity checkpoint gap.

Mention the US spelling 'visualize' and the synonym 'graph' in the description's trigger phrases to broaden natural trigger coverage.

DimensionReasoningScore

Conciseness

A lean SOP with no padding: every section directs action (decision table, render conventions, anti-patterns, delegation rule) and nothing explains concepts Claude already knows. Every token earns its place.

5 / 5

Actionability

Concrete guidance throughout — exact paths (knowledge/charts/<topic>.png, scratch/charts/<topic>.py), exact parameters (bbox_inches='tight', dpi=150), named pandas methods, and the markdown embed syntax — but no executable example script to copy, so it falls short of fully copy-paste-ready guidance.

4 / 5

Workflow Clarity

Five clearly sequenced steps with an explicit decision checkpoint ("If none fit, ask the user"), but post-render validation is implicit — no step verifies the PNG was produced or the data is sane — so it does not meet the 5 anchor's explicit validate/fix/retry loop.

4 / 5

Progressive Disclosure

A single self-contained file of appropriate length with well-organized sections (Steps, Anti-patterns, When to delegate) and no bundle files; nothing inlined that belongs in a separate reference. Per the simple-skill guidance this earns full marks.

5 / 5

Total

18

/

20

Passed

Description

87%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: it states concrete capabilities with enumerated chart types and artefacts, and gives explicit, natural trigger phrases plus a row-count heuristic for when to fire. Trigger coverage is good but misses a few common synonyms, and the action list is one capability deep rather than comprehensive.

DimensionReasoningScore

Specificity

Names the domain, enumerates concrete chart types ("line, bar, area, scatter, etc."), and specifies concrete outputs ("an image file plus the script that generated it"). Falls short of the 5 anchor because the actions are variants of a single rendering capability rather than comprehensive multi-action coverage.

4 / 5

Completeness

Explicitly answers both what ("Visualise the result of an analysis as a chart... Produces an image file plus the script that generated it") and when ("Use when the user asks to 'plot...', 'chart...'... or when a numerical result has more than ~10 rows") with concrete trigger phrases, matching the 5 anchor example pattern.

5 / 5

Trigger Term Quality

Includes natural phrases users would actually say — "plot...", "chart...", "show me the trend of...", "visualise..." — plus a concrete ~10-row heuristic. A few natural synonyms are missing (e.g. "graph", the US spelling "visualize"), so it does not reach the 5 anchor's comprehensive synonym coverage.

4 / 5

Distinctiveness Conflict Risk

Chart rendering is a clear niche with distinct triggers (plot/chart/visualise) and distinct output artefacts (image + script), so the risk of firing for the wrong skill is minimal.

5 / 5

Total

18

/

20

Passed

Validation

93%

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

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

relative_links

Relative link issues: 1 missing, 1 deeper-than-1-level

Warning

Total

15

/

16

Passed

Repository

agentscope-ai/agentscope-java

Path

agentscope-examples/agents/agentscope-dataagent/src/main/resources/shared/agents/data-agent/skills/chart-rendering/SKILL.md

Reviewed

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