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phoenix-client-development

Guide for the phoenix-client TypeScript package — experiment lifecycle, tracer provider management, and test conventions.

75

1.23x
Quality

62%

Does it follow best practices?

Impact

100%

1.23x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./js/packages/phoenix-client/.agents/skills/phoenix-client-development/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

92%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This is a well-crafted, concise routing skill that efficiently directs Claude to the right rule files based on task context. It avoids unnecessary explanation and provides a concrete build/test command. The only weakness is the inability to verify that referenced rule files exist and contain adequate content, which slightly limits confidence in the progressive disclosure structure.

DimensionReasoningScore

Conciseness

Every line earns its place. No unnecessary explanations of what TypeScript, OpenTelemetry, or vitest are. The opening line is a crisp summary, the table is compact, and the build command is minimal.

3 / 3

Actionability

Provides a concrete, copy-paste-ready build/test command, specifies the test framework and file naming convention, and directs Claude to read existing code before writing. For a routing/overview skill, this is sufficiently actionable.

3 / 3

Workflow Clarity

This is a simple routing skill with a single build/test action. The instruction to read existing code first, then the clear table directing to specific rule files for specific tasks, makes the workflow unambiguous. No multi-step destructive operations require validation checkpoints.

3 / 3

Progressive Disclosure

The rule file table provides clear one-level-deep references with good 'when to read' signals. However, no bundle files were provided to verify the referenced paths exist, and the references are to rules/ files only — there's no indication of whether these files actually exist or contain substantive content.

2 / 3

Total

11

/

12

Passed

Description

32%

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 identifies a specific package (phoenix-client) and lists topic areas but lacks concrete actions and explicit trigger guidance. It reads more like a table of contents than a skill description, making it difficult for Claude to know precisely when to select this skill over others. Adding specific actions and a 'Use when...' clause would significantly improve its effectiveness.

Suggestions

Add a 'Use when...' clause with explicit triggers, e.g., 'Use when the user asks about phoenix-client, Arize Phoenix SDK, experiment tracking, or tracer configuration in TypeScript.'

Replace high-level topic labels with concrete actions, e.g., 'Create and manage experiments, configure and shut down tracer providers, write tests following phoenix-client conventions.'

Include natural keyword variations users might use, such as 'Arize Phoenix', 'observability', 'tracing', 'spans', 'LLM evaluation', or 'phoenix SDK'.

DimensionReasoningScore

Specificity

Names the domain ('phoenix-client TypeScript package') and some areas ('experiment lifecycle, tracer provider management, test conventions'), but these are high-level categories rather than concrete actions. No specific verbs describing what the skill enables (e.g., 'create experiments', 'configure tracer providers').

2 / 3

Completeness

Describes 'what' at a high level (guide for phoenix-client covering certain topics) but completely lacks a 'Use when...' clause or any explicit trigger guidance for when Claude should select this skill. Per rubric guidelines, missing 'Use when' should cap completeness at 2, and the 'what' is also weak, so this scores a 1.

1 / 3

Trigger Term Quality

Includes some relevant keywords like 'phoenix-client', 'TypeScript', 'experiment', 'tracer provider', and 'test conventions', but misses common variations users might say (e.g., 'Arize Phoenix', 'observability', 'tracing', 'spans', 'LLM monitoring'). The terms are somewhat technical but relevant to the domain.

2 / 3

Distinctiveness Conflict Risk

The mention of 'phoenix-client TypeScript package' is fairly specific and narrows the domain, but 'experiment lifecycle' and 'tracer provider management' could overlap with other observability or testing skills. More explicit scoping would reduce conflict risk.

2 / 3

Total

7

/

12

Passed

Validation

90%

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

Validation10 / 11 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_field

'metadata' should map string keys to string values

Warning

Total

10

/

11

Passed

Repository
Arize-ai/phoenix
Reviewed

Table of Contents

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