prefect-flow-builder
Prefect Flow Builder - Auto-activating skill for Data Pipelines. Triggers on: prefect flow builder, prefect flow builder Part of the Data Pipelines skill category.
36
3%
Does it follow best practices?
Impact
100%
1.78xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./planned-skills/generated/11-data-pipelines/prefect-flow-builder/SKILL.mdQuality
Discovery
7%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This description is extremely weak across all dimensions. It reads as an auto-generated stub with no concrete actions, no meaningful trigger terms (the same phrase is duplicated), and no explicit guidance on when Claude should select this skill. It would be nearly indistinguishable from other data pipeline skills and provides no useful information for skill selection.
Suggestions
Add specific concrete actions the skill performs, e.g., 'Creates Prefect flows, defines tasks and dependencies, configures schedules, deploys flows to Prefect Cloud or server, and handles retries and error handling.'
Add an explicit 'Use when...' clause with natural trigger terms, e.g., 'Use when the user asks about building Prefect flows, orchestrating data pipelines, scheduling ETL jobs with Prefect, or deploying workflows.'
Expand trigger terms to include natural variations users would say: 'prefect', 'flow', 'data pipeline', 'ETL', 'orchestration', 'workflow', 'task dependencies', 'prefect deploy', '@flow decorator'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | The description provides no concrete actions whatsoever. It only names the tool ('Prefect Flow Builder') and a category ('Data Pipelines') without describing what it actually does—no verbs like 'creates', 'deploys', 'schedules', or 'monitors'. | 1 / 3 |
Completeness | The description fails to answer both 'what does this do' and 'when should Claude use it'. There is no explanation of capabilities and no explicit 'Use when...' clause—only a vague auto-activation mention and a repeated trigger phrase. | 1 / 3 |
Trigger Term Quality | The trigger terms are just 'prefect flow builder' repeated twice. There are no natural user keywords like 'data pipeline', 'workflow', 'ETL', 'orchestration', 'prefect deploy', 'task', or 'schedule' that users would commonly say. | 1 / 3 |
Distinctiveness Conflict Risk | The mention of 'Prefect' provides some specificity that distinguishes it from generic pipeline tools, but 'Data Pipelines' is broad enough to overlap with skills for Airflow, Luigi, Dagster, or other orchestration tools. The lack of specific actions makes it harder to differentiate. | 2 / 3 |
Total | 5 / 12 Passed |
Implementation
0%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is an empty shell with no actual instructional content. It consists entirely of generic boilerplate that describes what the skill would do without providing any Prefect-specific code, commands, patterns, or workflows. It fails on every dimension because it teaches Claude nothing actionable about building Prefect flows.
Suggestions
Add executable Python code examples showing how to define a Prefect flow with @flow and @task decorators, including a complete working example.
Include a concrete multi-step workflow for building and deploying a Prefect flow (e.g., define tasks → compose flow → test locally → deploy → validate execution).
Remove all boilerplate sections (Purpose, When to Use, Example Triggers, Capabilities) and replace with actual technical content: common patterns, configuration examples, error handling, and deployment commands.
Add references to separate files for advanced topics like Prefect deployments, scheduling, result persistence, and infrastructure blocks if the skill needs to cover those areas.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is entirely filler and boilerplate. It explains nothing Claude doesn't already know and provides zero domain-specific information about Prefect flows. Every section restates the same vague idea without adding value. | 1 / 3 |
Actionability | There is no concrete code, no commands, no executable guidance, and no specific examples of how to build a Prefect flow. The content only describes what the skill claims to do rather than instructing how to do anything. | 1 / 3 |
Workflow Clarity | No workflow steps are defined at all. There is no sequence, no validation checkpoints, and no process for building or deploying Prefect flows. The phrase 'step-by-step guidance' is mentioned but never delivered. | 1 / 3 |
Progressive Disclosure | The content is a flat, monolithic block of generic text with no references to external files, no structured navigation, and no separation of overview from detailed content. There is nothing to progressively disclose because there is no substantive content. | 1 / 3 |
Total | 4 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
- Commit
3e83543
- Reviewed
Table of Contents
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