AI SDK
vercel-labs/ai-facts
Answer questions about the AI SDK and help build AI-powered features.
Returns typed answers from a decision model, such as a category choice, a score on a labeled scale or a probability, each with confidence, for routing and grading tasks.
Install Yao Decision Tools
$ npx skills add YaoApp/yao --skill yao-decision -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install YaoApp/yao yao-decision --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/YaoApp/yao.git skills-src && mkdir -p .claude/skills && cp -r skills-src/tools/skills/yao-decision .claude/skills/yao-decision && 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 "yao-decision" agent skill from https://github.com/YaoApp/yao/tree/main/tools/skills/yao-decision into .claude/skills/yao-decision/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-decision", 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/YaoApp/yao/tree/main/tools/skills/yao-decisionType 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 YaoApp/yao --skill yao-decision -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install YaoApp/yao yao-decision --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/YaoApp/yao.git skills-src && mkdir -p .agents/skills && cp -r skills-src/tools/skills/yao-decision .agents/skills/yao-decision && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "yao-decision" agent skill from https://github.com/YaoApp/yao/tree/main/tools/skills/yao-decision into .agents/skills/yao-decision/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-decision", 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 YaoApp/yao --skill yao-decision -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install YaoApp/yao yao-decision --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/YaoApp/yao.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/tools/skills/yao-decision .cursor/skills/yao-decision && 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 "yao-decision" agent skill from https://github.com/YaoApp/yao/tree/main/tools/skills/yao-decision into .cursor/skills/yao-decision/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-decision", 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/YaoApp/yao.git --path tools/skills/yao-decision--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 YaoApp/yao --skill yao-decision -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install YaoApp/yao yao-decision --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/YaoApp/yao.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/tools/skills/yao-decision .gemini/skills/yao-decision && 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 "yao-decision" agent skill from https://github.com/YaoApp/yao/tree/main/tools/skills/yao-decision into .gemini/skills/yao-decision/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-decision", 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 YaoApp/yao yao-decisionInstalls 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 YaoApp/yao --skill yao-decision -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/YaoApp/yao.git skills-src && mkdir -p .github/skills && cp -r skills-src/tools/skills/yao-decision .github/skills/yao-decision && 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 "yao-decision" agent skill from https://github.com/YaoApp/yao/tree/main/tools/skills/yao-decision into .github/skills/yao-decision/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-decision", 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 YaoApp/yao --skill yao-decision -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install YaoApp/yao yao-decision --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/YaoApp/yao.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/tools/skills/yao-decision .opencode/skills/yao-decision && 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 "yao-decision" agent skill from https://github.com/YaoApp/yao/tree/main/tools/skills/yao-decision into .opencode/skills/yao-decision/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "yao-decision", 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
yao-decision- GitHub stars
- 8.1k
- Token cost
- ~1.3k tokens
- SKILL.md length
- 334 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Returns typed answers from a decision model, such as a category choice, a score on a labeled scale or a probability, each with confidence, for routing and grading tasks.
- Routing customer messages to the right department with a confidence value
- SKILL.md covers decision_decide, decision_providers and Constraints
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Grading content or an agent reply on a labeled quality scale
What it does
The skill documents the decision_decide tool, run through the tai command line. You pass a state (the context to judge) and one or more named questions, and the decision model answers in machine-readable form instead of free text. Three question types exist: choice picks one of several described options, score rates against a list of level labels, and noul estimates a probability between 0 and 1.
Choice and score answers include probabilities and a confidence value. You can send one state or a batch of states against the same questions, read states and questions from files, and select a provider or a model override. The timeout is configurable and defaults to 60 seconds. Typical uses are ticket routing, content grading and intent detection.
When your agent uses it
- Routing customer messages to the right department with a confidence value
- Grading content or an agent reply on a labeled quality scale
- Detecting intent or sentiment across a batch of messages
- Estimating the probability that a statement is positive or true
Example prompts
- “Classify this support message as billing, shipping or technical and give me the confidence.”
- “Score these three agent replies for clarity on a five-level scale.”
- “Run the questions in routing_questions.json against customer_message.txt.”
Requirements
- The tai command line tool
- A configured decision model provider
What it can do on your machine
Read from SKILL.md and the folder at commit eea1e7e. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash and json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Yao Decision Tools loads about 1.3k tokens when it runs. Until then it costs about 64 tokens; SKILL.md has 334 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 334 words (~1,260 tokens).
“Use these tools when you need structured, typed decisions rather than free-form LLM text. Decision models return machine-readable answers with probabilities and confidence scores.”
- name
- yao-decision
Files
Just SKILL.md in tools/skills/yao-decision of YaoApp/yao.
Open the folder on GitHubat commit eea1e7e
Compare with similar skills
Yao Decision Tools 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 |
|---|---|---|---|---|---|---|
| Yao Decision Tools this skillYaoApp/yao | 8.1k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| AI SDKvercel-labs/ai-facts | 168 | 20 repos | ~1.2k | Automated safety check: Pass | None | |
| Building Pydantic AI Agentsdocling-project/docling | 69k | — | ~2.8k | Automated safety check: Pass | MIT | |
| Claude Cookbooks Reference2025Emma/vibe-coding-cn | 23k | 1 repos | ~2.2k | Automated safety check: Pass | MIT | |
| Gemini API Devgoogle-gemini/gemini-skills | 4.3k | — | ~5.1k | Automated safety check: Pass | Apache-2.0 | |
| Building Pydantic AI Agentspydantic/pydantic-ai | 20k | — | ~8k | Automated safety check: Pass | MIT |
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Reference of Claude API examples and guides covering tool use, vision, RAG, classification, summarization, text-to-SQL, prompt caching and agent patterns.
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Related
Categories
Questions about Yao Decision Tools
What does Yao Decision Tools do?
Returns typed answers from a decision model, such as a category choice, a score on a labeled scale or a probability, each with confidence, for routing and grading tasks. The skill documents the decision_decide tool, run through the tai command line. You pass a state (the context to judge) and one or more named questions, and the decision model answers in machine-readable form instead of free text.
When should I use Yao Decision Tools?
Yao Decision Tools fits situations like: routing customer messages to the right department with a confidence value; grading content or an agent reply on a labeled quality scale; detecting intent or sentiment across a batch of messages; estimating the probability that a statement is positive or true.
How do I install Yao Decision Tools in Claude Code?
Run `npx skills add YaoApp/yao --skill yao-decision -a claude-code`. Or copy the skill folder (tools/skills/yao-decision in YaoApp/yao) into .claude/skills/yao-decision in your project. Claude Code loads it when a task matches its description.
How do I install Yao Decision Tools in Codex?
Run `npx skills add YaoApp/yao --skill yao-decision -a codex`. Or copy the skill folder (tools/skills/yao-decision in YaoApp/yao) into .agents/skills/yao-decision in your project. Codex loads it when a task matches its description.
Can I use Yao Decision Tools 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 YaoApp/yao --skill yao-decision -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/yao-decision, .gemini/skills/yao-decision, .github/skills/yao-decision and .opencode/skills/yao-decision in your project.
What does Yao Decision Tools need to run?
SKILL.md names no scripts, command-line tools or credentials: Yao Decision Tools is instructions for the agent only. Our summary lists: The tai command line tool; A configured decision model provider.
Does Yao Decision Tools 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 Yao Decision Tools 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 Yao Decision Tools use?
Yao Decision Tools has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Yao Decision Tools use?
About 1.3k tokens (SKILL.md is roughly 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 Yao Decision Tools?
Skills that share tags, products or a category with Yao Decision Tools: AI SDK (vercel-labs/ai-facts, 168 stars), Building Pydantic AI Agents (docling-project/docling, 69k stars), Claude Cookbooks Reference (2025Emma/vibe-coding-cn, 23k stars) and Gemini API Dev (google-gemini/gemini-skills, 4.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Yao Decision Tools?
YaoApp (a GitHub organization) maintains it in YaoApp/yao, which has 8,103 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 8, 2026.
Source: YaoApp/yao on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.