Effect TS
pproenca/dot-skills
Effect-TS library usage in TypeScript — Effect.gen generators, Schema.Struct/Schema.Class definitions, Layer/Context.Tag/Service patterns, Effect.pipe pipelines, Data.TaggedError/Data.Class error…
Development guide for the @arizeai/phoenix-client TypeScript SDK — run and resume experiments, manage OpenTelemetry tracer providers with stack-based attach/detach, and write vitest unit and…
Install Phoenix Client Development
$ npx skills add Arize-ai/phoenix --skill phoenix-client-development -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Arize-ai/phoenix phoenix-client-development --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Arize-ai/phoenix.git skills-src && mkdir -p .claude/skills && cp -r skills-src/js/packages/phoenix-client/.agents/skills/phoenix-client-development .claude/skills/phoenix-client-development && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "phoenix-client-development" agent skill from https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-development into .claude/skills/phoenix-client-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phoenix-client-development", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-developmentType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Arize-ai/phoenix --skill phoenix-client-development -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Arize-ai/phoenix phoenix-client-development --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Arize-ai/phoenix.git skills-src && mkdir -p .agents/skills && cp -r skills-src/js/packages/phoenix-client/.agents/skills/phoenix-client-development .agents/skills/phoenix-client-development && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "phoenix-client-development" agent skill from https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-development into .agents/skills/phoenix-client-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phoenix-client-development", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Arize-ai/phoenix --skill phoenix-client-development -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Arize-ai/phoenix phoenix-client-development --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Arize-ai/phoenix.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/js/packages/phoenix-client/.agents/skills/phoenix-client-development .cursor/skills/phoenix-client-development && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "phoenix-client-development" agent skill from https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-development into .cursor/skills/phoenix-client-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phoenix-client-development", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Arize-ai/phoenix.git --path js/packages/phoenix-client/.agents/skills/phoenix-client-development--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Arize-ai/phoenix --skill phoenix-client-development -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Arize-ai/phoenix phoenix-client-development --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Arize-ai/phoenix.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/js/packages/phoenix-client/.agents/skills/phoenix-client-development .gemini/skills/phoenix-client-development && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "phoenix-client-development" agent skill from https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-development into .gemini/skills/phoenix-client-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phoenix-client-development", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Arize-ai/phoenix phoenix-client-developmentInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Arize-ai/phoenix --skill phoenix-client-development -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Arize-ai/phoenix.git skills-src && mkdir -p .github/skills && cp -r skills-src/js/packages/phoenix-client/.agents/skills/phoenix-client-development .github/skills/phoenix-client-development && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "phoenix-client-development" agent skill from https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-development into .github/skills/phoenix-client-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phoenix-client-development", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Arize-ai/phoenix --skill phoenix-client-development -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Arize-ai/phoenix phoenix-client-development --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Arize-ai/phoenix.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/js/packages/phoenix-client/.agents/skills/phoenix-client-development .opencode/skills/phoenix-client-development && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "phoenix-client-development" agent skill from https://github.com/Arize-ai/phoenix/tree/main/js/packages/phoenix-client/.agents/skills/phoenix-client-development into .opencode/skills/phoenix-client-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phoenix-client-development", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
phoenix-client-development- GitHub stars
- 12k
- Token cost
- ~370 tokens
- SKILL.md length
- 78 words
- Files
- 5
- Skills in repo
- 39
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Development guide for the @arizeai/phoenix-client TypeScript SDK — run and resume experiments, manage OpenTelemetry tracer providers with stack-based attach/detach, and write vitest unit and…
- Adding features to phoenix-client
- SKILL.md covers Rule Files and Build and Test
- Calls pnpm
- Debugging experiment lifecycle
What it does
Phoenix Client Development is an agent skill from Arize-ai/phoenix. Development guide for the @arizeai/phoenix-client TypeScript SDK — run and resume experiments, manage OpenTelemetry tracer providers with stack-based attach/detach, and write vitest unit and integration tests. Use when adding features to phoenix-client, debugging experiment lifecycle or provider cleanup, modifying dataset/prompt/session/span APIs, or writing tests for the js/packages/phoenix-client/ directory.
Its SKILL.md is about 370 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `rules/experiments.md`, `rules/prompts.md` and `rules/testing.md`).
It sits in Testing & QA, covering LLM observability, Observability and Unit testing. It works with OpenTelemetry, Vitest and TypeScript. The repository describes itself as: AI Observability & Evaluation. The licence is Apache-2.0.
When your agent uses it
- Adding features to phoenix-client
- Debugging experiment lifecycle
- Provider cleanup
- Modifying dataset/prompt/session/span APIs
Example prompts
- “/phoenix-client-development”
What it can do on your machine
Read from SKILL.md and the folder at commit 3383f07. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
pnpm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Phoenix Client Development loads about 370 tokens when it runs. Until then it costs about 110 tokens; SKILL.md has 78 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from Arize-ai/phoenix at commit 3383f07, republished under its Apache-2.0 licence (© Arize-ai). 78 words, ~370 tokens.
Download SKILL.mdSave it as
.claude/skills/phoenix-client-development/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.- name
- phoenix-client-development
- description
- Development guide for the @arizeai/phoenix-client TypeScript SDK — run and resume experiments, manage OpenTelemetry tracer providers with stack-based attach/detach, and write vitest unit and integration tests. Use when adding features to phoenix-client, debugging experiment lifecycle or provider cleanup, modifying dataset/prompt/session/span APIs, or writing tests for the js/packages/phoenix-client/ directory.
- license
- Apache-2.0
- metadata.author
- oss@arize.com
- metadata.version
- 1.0.0
- metadata.languages
- TypeScript
- metadata.internal
- true
Phoenix Client Development
TypeScript SDK for Phoenix AI observability: datasets, experiments, prompts, sessions, spans, traces.
Read existing code in the directory you're working in before writing new code.
Rule Files
| Rule file | When to read |
|---|---|
rules/experiments.md | Experiment execution, task runners, evaluator wiring |
rules/prompts.md | Prompt helpers, selector shapes, server version gating |
rules/tracing.md | OpenTelemetry tracer providers, span export, global state |
rules/testing.md | Unit tests, integration tests, test fixtures |
Build and Test
cd js/
pnpm --filter phoenix-client testTests use vitest. Test files live in test/ named *.test.ts.
© Arize-ai, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 4 other files in js/packages/phoenix-client/.agents/skills/phoenix-client-development of Arize-ai/phoenix.
- SKILL.md
- rules/experiments.md
- rules/prompts.md
- rules/testing.md
- rules/tracing.md
Open the folder on GitHubat commit 3383f07
Compare with similar skills
Phoenix Client Development next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Phoenix Client Development this skillArize-ai/phoenix | 12k | — | ~370 | Automated safety check: Pass | Apache-2.0 | |
| Effect TSpproenca/dot-skills | 214 | — | ~2k | Automated safety check: Pass | MIT | |
| Test Writing WorkflowiOfficeAI/AionUi | 33k | 1 repos | ~1.2k | Automated safety check: Pass | Apache-2.0 | |
| Hilla TestAI-Unified-Process/marketplace | 140 | — | ~3.9k | Automated safety check: Warn | Apache-2.0 | |
| Angular TestingKilo-Org/kilo-marketplace | 189 | — | ~2.9k | Automated safety check: Pass | MIT | |
| Vitest Testingsecondsky/claude-skills | 227 | — | ~1.2k | Automated safety check: Notes | MIT |
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Questions about Phoenix Client Development
What does Phoenix Client Development do?
Development guide for the @arizeai/phoenix-client TypeScript SDK — run and resume experiments, manage OpenTelemetry tracer providers with stack-based attach/detach, and write vitest unit and…. Phoenix Client Development is an agent skill from Arize-ai/phoenix. Development guide for the @arizeai/phoenix-client TypeScript SDK — run and resume experiments, manage OpenTelemetry tracer providers with stack-based attach/detach, and write vitest unit and integration tests.
When should I use Phoenix Client Development?
Phoenix Client Development fits situations like: adding features to phoenix-client; debugging experiment lifecycle; provider cleanup; modifying dataset/prompt/session/span APIs.
How do I install Phoenix Client Development in Claude Code?
Run `npx skills add Arize-ai/phoenix --skill phoenix-client-development -a claude-code`. Or copy the skill folder (js/packages/phoenix-client/.agents/skills/phoenix-client-development in Arize-ai/phoenix) into .claude/skills/phoenix-client-development in your project. Claude Code loads it when a task matches its description.
How do I install Phoenix Client Development in Codex?
Run `npx skills add Arize-ai/phoenix --skill phoenix-client-development -a codex`. Or copy the skill folder (js/packages/phoenix-client/.agents/skills/phoenix-client-development in Arize-ai/phoenix) into .agents/skills/phoenix-client-development in your project. Codex loads it when a task matches its description.
Can I use Phoenix Client Development in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Arize-ai/phoenix --skill phoenix-client-development -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/phoenix-client-development, .gemini/skills/phoenix-client-development, .github/skills/phoenix-client-development and .opencode/skills/phoenix-client-development in your project.
What does Phoenix Client Development need to run?
Going by SKILL.md and its folder, Phoenix Client Development needs the command-line tools its instructions call (pnpm).
Does Phoenix Client Development access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Phoenix Client Development safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Phoenix Client Development use?
Phoenix Client Development is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Phoenix Client Development use?
About 370 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Phoenix Client Development?
Skills that share tags, products or a category with Phoenix Client Development: Effect TS (pproenca/dot-skills, 214 stars), Test Writing Workflow (iOfficeAI/AionUi, 33k stars), Hilla Test (AI-Unified-Process/marketplace, 140 stars) and Angular Testing (Kilo-Org/kilo-marketplace, 189 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Phoenix Client Development?
Arize-ai (a GitHub organization) maintains it in Arize-ai/phoenix, which has 11,738 GitHub stars. The repository holds 39 skills in this directory. The repository was last updated on October 7, 2026.
Source: Arize-ai/phoenix on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.