CtrlK
BlogDocsLog inGet started
Tessl Logo
SkillPublic

android-legacy-navigation

Implement Jetpack Navigation Component with XML graphs and SafeArgs for type-safe fragment navigation. Use when working with XML-based navigation or SafeArgs in legacy Android projects; defer drawer and other UI-chrome work to UI skills.

65

Quality

82%

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

SKILL.md
Quality
Evals
Security

Quality

Content

76%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 lean, well-structured overview with appropriate one-level-deep progressive disclosure and executable code in the bundle. The weakest area is workflow clarity: the three-step sequence lacks any validation checkpoints, and the deep-link requirement stated in the body has no accompanying example in the reference.

Suggestions

Add a verification checkpoint to the workflow, e.g. after step 1 note that the SafeArgs plugin must produce generated *Directions/*Args classes after a Gradle sync, and to confirm before writing navigation code.

Add a minimal <deepLink> XML example to references/implementation.md since the body mandates explicit deep links in the graph but no example exists anywhere in the bundle.

Consolidate the two near-duplicate SafeArgs sections in references/implementation.md ("Navigate with SafeArgs" and "Type-Safe Navigation with SafeArgs") into one, and reduce the three links to the same file in the body to one inline pointer plus the References section.

DimensionReasoningScore

Conciseness

The ~28-line body is lean and directive ("Use one Host Activity with `NavHostFragment`", "Enable SafeArgs plugin — MANDATORY"), explaining nothing Claude already knows and spending no tokens on padding. It matches anchor 5: every token earns its place.

5 / 5

Actionability

Directives are concrete (named graph files `nav_auth.xml`/`nav_main.xml`, "Define explicit `<deepLink>` in graph, not AndroidManifest intent filters") and the referenced bundle file provides copy-paste-ready gradle, XML, and Kotlin code for setup, graph definition, navigation, and argument receipt. It falls short of anchor 5 because deep links are required in the body but have no example anywhere, and short of nothing below 4 since the combined guidance is executable rather than pseudocode.

4 / 5

Workflow Clarity

A clear 1→2→3 sequence (setup architecture, manage graphs, navigate with SafeArgs) plus an anti-patterns section, but there are no checkpoints at all — no build-sync or compile verification after enabling the SafeArgs plugin, and section 3 contains only a link. This matches anchor 3 (sequence present, checkpoints missing) rather than 4, where most checkpoints would be present.

3 / 5

Progressive Disclosure

The body is a concise overview pointing one level deep to a real, clearly-signaled reference file (references/implementation.md) linked inline and in a References section. It falls short of anchor 5 due to minor organization gaps: the reference contains two near-duplicate SafeArgs sections ("Navigate with SafeArgs" and "Type-Safe Navigation with SafeArgs") and the same file is linked three times in a short body.

4 / 5

Total

16

/

20

Passed

Description

82%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 that clearly and explicitly states both what the skill does and when to use it, with a useful explicit boundary against adjacent UI skills. The main gap is specificity: it names the technologies but describes one broad implementation action rather than enumerating several concrete capabilities.

DimensionReasoningScore

Specificity

"Implement Jetpack Navigation Component with XML graphs and SafeArgs for type-safe fragment navigation" names the domain and concrete mechanisms (XML graphs, SafeArgs) but frames a single broad action rather than the several discrete actions (extract, fill, merge) of the higher anchors. It is clearly above 2 because the domain and specific technologies are named, but below 4 because coverage of capabilities is not enumerated.

3 / 5

Completeness

The first sentence explicitly answers "what" (implement Navigation Component with XML graphs and SafeArgs for type-safe fragment navigation) and the second explicitly answers "when" with concrete trigger phrases ("Use when working with XML-based navigation or SafeArgs in legacy Android projects"). This matches anchor 5 exactly; it is not 4 because the "when" clause is already fully explicit and specific.

5 / 5

Trigger Term Quality

"XML-based navigation", "SafeArgs", "legacy Android projects", and "Jetpack Navigation Component" are natural phrases a developer would say when needing this skill, but common variations like "nav graph", "findNavController", or bare "Navigation Component" are absent. Good coverage places it above anchor 3, while missing synonyms keep it below anchor 5.

4 / 5

Distinctiveness Conflict Risk

The description carves out a clear niche (legacy XML-based navigation with SafeArgs, implicitly vs. Compose navigation) and adds an explicit boundary ("defer drawer and other UI-chrome work to UI skills"), minimizing conflict with sibling UI skills. This matches anchor 5's clear-niche-with-distinct-triggers standard and exceeds anchor 4's minor-overlap profile.

5 / 5

Total

17

/

20

Passed

Validation

87%

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

Validation — 14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

metadata_field

'metadata' should map string keys to string values

Warning

Total

14

/

16

Passed

Repository

HoangNguyen0403/agent-skills-standard

Path

skills/android/android-legacy-navigation/SKILL.md

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.