CtrlK
BlogDocsLog inGet started
Tessl Logo

urlboxio

Urlbox.io integration. Manage data, records, and automate workflows. Use when the user wants to interact with Urlbox.io data.

56

Quality

64%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/urlboxio/SKILL.md
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.

The body is highly actionable, with executable Membrane CLI commands and a well-sequenced connection workflow that includes state-based validation checkpoints and a polling feedback loop. Conciseness and organization slip slightly due to an unnecessary opening explanation and a duplicated action-list section.

Suggestions

Cut the opening sentences explaining what website screenshots are; lead directly with what the skill does and the CLI commands.

Merge 'Searching for actions' and 'Popular actions' into one section to remove the duplicated action-list command.

Label or remove the dangling 'Step 2' reference so the connection workflow's jump target is unambiguous.

DimensionReasoningScore

Conciseness

Mostly efficient with copy-paste commands, but the opening explains screenshot-as-a-service (a concept Claude knows) and the 'Searching for actions' and 'Popular actions' sections repeat the same action-list command, so it could be tightened.

3 / 5

Actionability

Fully executable copy-paste bash commands cover install, login, connection ensure/get with polling, action list/run with JSON input, and proxy requests with a complete flag table — concrete guidance for the common cases.

5 / 5

Workflow Clarity

The connection flow is clearly sequenced with explicit state checks (READY/BUILDING/CLIENT_ACTION_REQUIRED/CONFIGURATION_ERROR) and a re-poll feedback loop, though the 'skip to Step 2' reference points to an unlabeled target.

4 / 5

Progressive Disclosure

A single self-contained SKILL.md is well-organized into clear headed sections with no bundle files needed; minor organization gaps (duplicated action-list section, dangling Step 2 reference) keep it just below ideal.

4 / 5

Total

16

/

20

Passed

Description

53%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.

The description correctly pairs a what and a when clause and anchors on the Urlbox.io product, but its capabilities are described in generic data-management terms rather than the concrete screenshot-generation actions the service performs. Trigger keywords omit the most natural user terms like 'screenshots'.

Suggestions

Replace generic verbs with concrete Urlbox capabilities, e.g. 'Generate website screenshots, render HTML to images, and produce PDF documents from URLs.'

Add natural trigger keywords users actually say: 'Use when the user wants to take website screenshots, render pages to images/PDFs, or capture Urlbox.io output.'

Tighten the 'when' clause to screenshot-specific scenarios to reduce overlap with generic data/automation skills.

DimensionReasoningScore

Specificity

The description names the Urlbox.io domain but lists only generic actions ("Manage data, records, and automate workflows") with no concrete screenshot-specific operations, matching the 'names domain but actions minimal/generic' anchor.

2 / 5

Completeness

Both a 'what' (Urlbox.io integration; manage data, records, workflows) and a 'when' (Use when the user wants to interact with Urlbox.io data) are present, but the 'when' is generic and could be more specific.

4 / 5

Trigger Term Quality

It includes the natural trigger "Use when the user wants to interact with Urlbox.io data" but omits core terms users would actually say (e.g. "screenshots", "website screenshots"), leaving common variations and synonyms missing.

3 / 5

Distinctiveness Conflict Risk

Naming Urlbox.io gives it a niche, but the action phrasing ("Manage data, records, and automate workflows") is broad enough to overlap with CRM/database/automation skills.

3 / 5

Total

12

/

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
membranedev/application-skills
Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.