<objective> Resolve ambiguity through a systematic process that prioritizes accurate information over guessing. This skill determines the best source for missing information and retrieves it efficiently.

Core principle: Rather ask than guess. Wrong assumptions waste more time than clarifying questions. </objective>

<quick_start> <decision_tree> When you encounter ambiguity, classify it:

•
Technical/Factual - "How does X work?" "What is the correct syntax?" → Likely found in project or online sources → Follow the tiered lookup process
•
Intent/Choice - "Which approach should I use?" "What does the user want?" → Requires user input → Use AskUserQuestion immediately </decision_tree>

<immediate_action> If ambiguity is about user intent or preference: → Skip lookup, go directly to <user_clarification> section

If ambiguity is technical/factual: → Follow <tiered_lookup> process </immediate_action> </quick_start>

<tiered_lookup> <description> For technical/factual ambiguity, check sources in this order. Stop as soon as you find authoritative information. </description>

<tier_1 name="Project Context Files"> Check first - fastest and most relevant

•
Read .claude/workspace-info.toon
- •Contains workspace structure, projects, capabilities, outcomes
- •Shows current focus and IDE configuration
•
Read .claude/project-info.toon
- •Contains project technology, dependencies, entry points
- •Shows repository and IDE details

code

Task(subagent_type="Explore", model="haiku", prompt="""
Check for context files:
- .claude/workspace-info.toon
- .claude/project-info.toon

If found, extract relevant information about: {specific question}
Return only the relevant fields, not the entire file.
""")

</tier_1>

<tier_2 name="Architectural Files"> Check second - project-specific patterns

Look within current scope for:

•CLAUDE.md - Project instructions and conventions
•README.md - Project overview and setup
•ARCHITECTURE.md or docs/architecture.md - Design decisions
•
Configuration files relevant to the question:
- •package.json, tsconfig.json (JavaScript/TypeScript)
- •pyproject.toml, setup.py (Python)
- •Cargo.toml (Rust)
- •.env.example (environment variables)

code

Glob for architectural files:
- **/CLAUDE.md
- **/README.md
- **/ARCHITECTURE.md
- **/docs/*.md

</tier_2>

<tier_3 name="Documentation via MCP"> Check third - if MCP documentation tools are available

If MCP tools are available for documentation lookup:

•Use mcp__context7__* for library documentation
•Use mcp__firecrawl__* for web documentation
•Use other documentation-specific MCP tools

These provide structured access to official documentation. </tier_3>

<tier_4 name="Web Search Official Sources"> Check fourth - for external APIs, libraries, standards

Use WebSearch and WebFetch for:

•Official documentation sites
•GitHub repositories of libraries
•API reference documentation
•RFC or specification documents

<search_strategy>

•WebSearch with specific query: "{library/API name} documentation {specific topic} 2024 2025"
•WebFetch the most authoritative result (official docs preferred)
•Extract only the relevant information

Prefer sources in this order:

•Official documentation (*.dev, *.io, readthedocs)
•GitHub repository README/docs
•Stack Overflow with high votes (for edge cases) </search_strategy> </tier_4>

<when_to_stop> Stop the tiered lookup when:

•You find authoritative information that resolves the ambiguity
•You've checked all relevant tiers without finding information
•The information found indicates this is actually a choice/intent question

If all tiers exhausted without answer → proceed to <user_clarification> </when_to_stop> </tiered_lookup>

<user_clarification> <description> For intent/choice questions, or when tiered lookup fails, ask the user directly. Never guess when user input is available. </description>

<principles> 1. **Explain what you need** - Tell the user what information is missing 2. **Explain why you need it** - Describe how the answer affects the outcome 3. **Offer smart choices** - If you can infer likely options, present them 4. **Best practice first** - Order choices with recommended approach at top 5. **Bad ideas last** - If including risky options, put them at the bottom 6. **Always allow custom input** - User can always provide their own answer 7. **When uncertain, don't guess choices** - Better to ask open-ended than offer wrong options </principles>

<with_known_choices> When you can confidently identify the options:

code

AskUserQuestion with structure:
- Question: Clear, specific question explaining context
- Options ordered by preference:
  1. Best practice / Most common / Recommended
  2. Good alternative
  3. Another valid option
  4. Least recommended / Has drawbacks
- Each option includes description explaining implications
- User can always select "Other" for custom input

<example> Question: "Which authentication approach should I implement?"

Options (ordered best → least recommended):

•JWT with refresh tokens - Industry standard, stateless, works well with APIs
•Session-based auth - Simple, works well for server-rendered apps
•OAuth2 only - Good for social login, but adds complexity
•Basic auth - Simple but less secure, only for internal tools

Each option explains trade-offs so user can make informed choice. </example> </with_known_choices>

<without_known_choices> When you cannot confidently identify the options:

DO NOT GUESS. Ask an open-ended question instead.

code

AskUserQuestion:
- Question: Explain what you need to know and why
- Options:
  1. A general direction if you have any hint
  2. (Keep options minimal or omit entirely)
- Allow free-form input as primary response method

<example> Instead of guessing configuration options:

Question: "I need to configure the database connection. What database are you using and what are the connection details?"

Options:

•I'll provide the details - Let me type the configuration

This is better than guessing "PostgreSQL" or "MySQL" when you don't know. </example> </without_known_choices>

<formatting_rules>

•Single question at a time - Don't overwhelm with multiple questions
•2-4 options maximum - More becomes confusing
•Descriptions are required - Every option needs context
•No yes/no when options exist - Offer the actual choices instead
•Acknowledge uncertainty - "I'm not sure which applies, so..." </formatting_rules> </user_clarification>

<ambiguity_categories> <category name="Technical Implementation"> Examples: "How do I call this API?" "What's the correct syntax?"

Resolution path:

•Check project context files
•Check architectural docs
•WebSearch official documentation
•If still unclear → ask user for clarification </category>

<category name="Project Conventions"> **Examples**: "What naming convention?" "Where should this file go?"

Resolution path:

•Check CLAUDE.md for explicit conventions
•Check existing code for patterns (Glob + Read)
•Check README/contributing guide
•If no clear pattern → ask user preference </category>

<category name="User Intent"> **Examples**: "Which feature first?" "Should I also refactor X?"

Resolution path:

•Skip lookup - this requires user input
•AskUserQuestion immediately
•Present inferred options if confident
•Allow open-ended response if uncertain </category>

<category name="External Dependencies"> **Examples**: "Which version of X?" "What's the API for Y?"

Resolution path:

•Check package.json/pyproject.toml for versions
•WebSearch for current documentation
•WebFetch official docs
•If version-specific behavior → confirm with user </category>

<category name="Configuration Values"> **Examples**: "What port?" "What environment variables?"

Resolution path:

•Check .env.example or config files
•Check project-info.toon
•Check README for setup instructions
•If sensitive values → ask user (never guess credentials) </category>

<category name="Architectural Decisions"> **Examples**: "Monolith or microservices?" "Which pattern to use?"

Resolution path:

•Check ARCHITECTURE.md or design docs
•Check workspace-info.toon for project structure
•This is usually a choice → AskUserQuestion
•Present trade-offs clearly in options </category>

</ambiguity_categories>

<process> <step_1> **Detect ambiguity**: Identify what information is missing and classify it: - Technical/Factual → Tier lookup - Intent/Choice → User clarification </step_1>

<step_2> For technical ambiguity: Execute tiered lookup in order:

•Project context files (.claude/*.toon)
•Architectural files (CLAUDE.md, README, docs)
•MCP documentation tools (if available)
•WebSearch/WebFetch official sources </step_2>

<step_3> For intent ambiguity or lookup failure: Use AskUserQuestion:

•Explain what's needed and why
•Offer choices ordered by recommendation (if known)
•Don't guess choices if uncertain
•Always allow custom input </step_3>

<step_4> Apply the answer: Use the information to proceed with the task. Document any decisions made for future reference. </step_4> </process>

<success_criteria> Ambiguity is resolved when:

•Information found: Authoritative source confirms the answer
•User clarified: User provided explicit direction
•Documented: Decision is captured for future reference

Signs of good resolution:

•No guessing occurred
•User wasn't asked unnecessary questions
•The answer came from the most appropriate source
•Forward progress is now possible </success_criteria>

<anti_patterns> <pattern name="Guessing and Hoping"> Wrong: Making assumptions and proceeding without verification Instead: Take 30 seconds to check or ask </pattern>

<pattern name="Too Many Questions"> **Wrong**: Asking 5 questions before doing anything **Instead**: Ask only what's blocking immediate progress </pattern> <pattern name="Vague Questions"> **Wrong**: "How should I proceed?" **Instead**: "Should I use approach A (benefit) or B (benefit)?" </pattern> <pattern name="Assuming User Expertise"> **Wrong**: "Should I use the factory pattern or strategy pattern?" **Instead**: Explain the options in plain terms with trade-offs </pattern> <pattern name="Hiding Behind Defaults"> **Wrong**: Silently using a default without mentioning alternatives **Instead**: "I'll use X (the standard approach). Let me know if you'd prefer Y." </pattern> </anti_patterns>