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name: miller-patterns-audit description: Use when an agent needs extractor-recognized code-shape facts such as routes, htmx attributes, Alpine directives, SQL DDL/DML, or data-document structure. user-invocable: true arguments: "<pattern family, path, language, or metadata filter>" allowed-tools: mcp__miller__patterns, mcp__miller__search, mcp__miller__inspect, mcp__miller__workspace

Miller Patterns Audit

The current extractor catalog contains 194 pattern IDs across 36 languages. Use patterns when the question is about known structural facts emitted by julie-extractors, not arbitrary AST matching. Start by listing observed pattern IDs in the selected workspace, then search the relevant ID with path, language, and metadata filters.

Workflow

1. Discover available IDs:

patterns(operation="list")
patterns(operation="list", language="razor")

List output includes Next: / JSON next_actions derived from observed IDs. Prefer those follow-up calls before inventing a raw text grep.

2. Search a concrete pattern:

patterns(operation="search", pattern_id="aspnet.minimal_api.route.v1", where="verb=GET")
patterns(operation="search", pattern_id="htmx.attribute.v1", where="name=hx-get", path="Views/**")
patterns(operation="search", pattern_id="alpine.directive.v1", where="directive=x-data", path="Views/**")
patterns(operation="search", pattern_id="sql.merge_statement.v1")

3. Summarize before broad audits:

patterns(operation="summary", pattern_id="markdown.heading.v1", path="docs/**")
patterns(operation="summary", pattern_id="json.property.v1", language="json")

4. Inspect source only after the pattern rows identify a file and line:

inspect(target="<path from pattern row>")

Good Uses

• List ASP.NET minimal API routes without scanning source text.
• Find htmx or Alpine usage in Razor/HTML views.
• Audit SQL DDL/DML, including MERGE, JSON/YAML/TOML keys, or Markdown structure.
• Compare code-shape facts across registered workspaces with workspace_id.

Limits

• patterns is not a raw AST query engine.
• Pattern IDs come from the extractor catalog; if a shape is missing, add extractor support first.
• No-match output can include near matches and active-filter guidance. If the pattern exists but filters remove every row, loosen path, language, or where.
• Use search(mode="source") for arbitrary source text and search(mode="content") for docs/config prose.