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slack-notifier

Use this skill when you want to send Slack messages — alerts, formatted reports, approval requests, or scheduled summaries — using Block Kit for rich formatting.

64

Quality

78%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

No findings from the security scan

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tessl review fix ./external/goose-recipes/slack-notifier/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

72%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.

An actionable, well-structured code skill that is lean and easy to navigate. Its main weakness is the absence of validation/feedback loops for the outward-facing Slack post operations, which caps workflow clarity.

Suggestions

Wrap each chat_postMessage call in try/except SlackApiError and add a verify step that confirms the returned ts before reporting success, turning posting into a validate-then-report workflow.

Complete the code snippets by importing os, time, and datetime (or remove their use) so examples are copy-paste runnable as written.

Replace the hardcoded model='claude-opus-4-6' with a current model id or an environment/config-driven value and avoid pinning a version inside the skill.

DimensionReasoningScore

Conciseness

Mostly lean and code-driven with little over-explanation, though the Overview mildly restates the description and the Quick Reference table re-covers purposes already evident in the code.

4 / 5

Actionability

Provides concrete, copy-paste-ready slack_sdk functions for each message type, but a few imports used in snippets (os, time, datetime) are not shown and the AI summary hardcodes a stale model id 'claude-opus-4-6'.

4 / 5

Workflow Clarity

Each function is a clear single action, but posting to Slack is an outward-facing operation with no validation/verification step — SlackApiError is imported but never handled in a try/except, so the destructive/outward-facing cap of 3 applies.

3 / 5

Progressive Disclosure

A self-contained, well-organized single file with clear section headers (Setup, Basic Message, Rich Alert, Approval, AI Summary, Quick Reference) and no nested or buried references.

5 / 5

Total

16

/

20

Passed

Description

83%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, third-person description with an explicit 'Use when' trigger and a comprehensive enumeration of concrete Slack message types. It is held back only by a generic when-clause and a few missing natural synonym variations.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'send Slack messages — alerts, formatted reports, approval requests, or scheduled summaries' — plus the 'Block Kit for rich formatting' mechanism, giving comprehensive coverage of the skill's message types.

5 / 5

Completeness

Explicitly answers both what (the enumerated message types plus Block Kit) and when ('Use this skill when you want to send Slack messages'), though the when clause is somewhat generic rather than the richer 'or when the user mentions...' form of the top anchor.

4 / 5

Trigger Term Quality

Strong natural keywords users would say ('send Slack messages', 'alerts', 'approval requests', 'scheduled summaries'), but a few natural variations/synonyms (e.g. 'Slack notifications', 'Slack channels') are missing.

4 / 5

Distinctiveness Conflict Risk

Slack messaging via Block Kit is a clear niche with distinct triggers and minimal overlap risk with other skills.

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.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
ProwlrBot/prowlr-marketplace
Reviewed

Table of Contents

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