API Documentation Discovery

Overview

When your training data conflicts with current API versions, STOP guessing and START discovering. This skill guides you to find current, accurate documentation using language-specific tools.

Core principle: Training data ages. Installed versions are truth. Use discovery tools to find what's actually there.

When to Use

Reactive Triggers (MUST use after these):

• ✅ 2+ failed attempts with same library/API
• ✅ Error patterns: "method not found", "wrong number of arguments", "unknown flag", "undefined method"
• ✅ Version mismatch symptoms in stack traces

Proactive Red Flags (STOP and check docs when you notice):

• ⚠️ You're confident about API usage but haven't verified current version
• ⚠️ User is confident but their syntax keeps failing
• ⚠️ You're making "one more tweak" to syntax
• ⚠️ You're using phrases like "should work", "likely correct", "probably just"
• ⚠️ You're pattern-matching from training data without verification
• ⚠️ You're about to claim something is "documented" without checking

When NOT to use:

• First attempt with clear error message pointing to fix
• Errors unrelated to API usage (logic bugs, type errors in your code)

The Discovery Workflow

Step 1: STOP Guessing

Recognize the trigger. Don't make another attempt based on patterns or user confidence.

Step 2: Identify Context

• What library/framework is failing? (check imports, stack traces, go.mod/Gemfile)
• What version is installed? (language tools show this)
• What operation are you trying? (the actual goal, not the syntax attempt)

Step 3: Use Language Discovery Tools

Check language-specific reference for HOW to discover documentation:

• references/go.md - Go module exploration
• references/ruby.md - Ruby gem exploration

Follow progressive discovery: docs → examples → source

Step 4: Load Framework Reference (if available)

If framework-specific reference exists, load it for curated patterns:

• references/go/cobra.md - Cobra CLI patterns
• references/ruby/rails.md - Rails patterns
• references/ruby/karafka.md - Karafka patterns

Step 5: Verify Before Using

• Found API signature? Verify it matches your use case
• Found example? Adapt it, don't just copy pattern from memory
• Found docs? Read them, don't skim for confirmation

Common Anti-Patterns

Navigation: Language References

Available language discovery guides:

• references/go.md - Go: go doc, go list, example/test scanning
• references/ruby.md - Ruby: bundle info, ri, gem exploration

Path issues: Some languages need tool managers (mise, asdf). If go or bundle not found, try mise exec -- <command>.

Extending this skill: To add a new language reference, see references/WRITING.md for principles and template.

Navigation: Framework References

Available framework cheat sheets:

• references/go/cobra.md - Cobra CLI library patterns
• references/ruby/rails.md - Rails framework patterns (coming)
• references/ruby/karafka.md - Karafka framework patterns (coming)

Red Flags - When You're About to Fail

STOP immediately if you catch yourself:

• Making confident API claims without checking current docs
• Accepting user's confident syntax without verification
• Trying "one more variation" based on pattern-matching
• Using phrases: "should work", "likely", "probably", "common pattern"
• Creating narrative about what "likely happened" without evidence
• Claiming something is "documented" without reading it

All of these mean: Use discovery tools NOW.

After Finding Documentation

1. Verify: API signature matches your use case
2. Adapt: Use the pattern for your specific need
3. Test: Try the verified approach
4. Update understanding: Note what changed from your training data

Real-World Impact

Without this skill:

• 15+ minutes guessing at syntax variations
• Confident claims based on outdated training data
• User frustration from repeated failures

With this skill:

• 2 minutes checking current docs
• Accurate API usage from installed version
• Fast resolution based on truth, not patterns