Elixir & Phoenix Skills

Cc Changelog - part of the Elixir & Phoenix Skills pack. Specialist skills for Elixir, Phoenix, and LiveView.

Docs Check - part of the Elixir & Phoenix Skills pack. Specialist skills for Elixir, Phoenix, and LiveView.

Guide plugin development workflow - editing skills, agents, hooks, or eval framework in this repo. Use when modifying files in plugins/elixir-phoenix/, lab/eval/, or lab/autoresearch/. Ensures changes pass eval, lint,…

Generate X/Twitter release promotion posts with ASCII tables and CodeSnap rendering. Use when writing release posts, promotion tweets, plugin announcements, or preparing social media content for new versions.

Release - part of the Elixir & Phoenix Skills pack. Specialist skills for Elixir, Phoenix, and LiveView.

Deep qualitative analysis of high-signal sessions. Spawns subagents with v2 template, synthesizes patterns, compares against known findings. Use after /session-scan.

Compute metrics for Claude Code sessions. Discovers via ccrider, filters trivial, computes friction/opportunity/fingerprint scores. Use for broad session triage.

Analyze trends across session metrics. Computes windowed aggregates, deltas, and compares against MEMORY.md findings. Use periodically for progress tracking.

Analyze skill effectiveness across sessions. Computes per-skill metrics (action rate, friction, outcomes), identifies degrading skills, and generates improvement recommendations. Requires session-scan data in metrics.…

Lab:Autoresearch - part of the Elixir & Phoenix Skills pack. Specialist skills for Elixir, Phoenix, and LiveView.

Summarize and review what changed while you were away. Use after a weekend, vacation, or flight to check missed PRs, git commits, Linear tickets, and meetings - one prioritized brief, not a firehose.

Easter-egg alias for /catchup. Same return-from-absence briefing, squeezier name. Use exactly like /catchup - all flags pass through unchanged.

Ash Framework - resources, actions, policies, aggregates, calculations, AshPhoenix.Form, LiveView, migrations. Use when generating resources via mix ash.codegen, editing changes, checks, types, validations, or domain …

Inspect LiveView socket assigns for memory bloat - missing temporary_assigns, unused assigns, unbounded lists needing streams, memory estimates. Use when LiveView memory grows or you need to add temporary_assigns.

Project health audit and health check - architecture, performance, tests, dependencies, code quality. Use when assessing overall project health, before releases, or after refactors.

Analyze Phoenix context boundaries and module coupling via mix xref. Use when checking cross-context calls, validating dependencies, before splitting modules, or reviewing architecture.

Brainstorm Elixir/Phoenix features - explore ideas, compare approaches, gather requirements. Use when vague idea, not sure how to approach, or want to discuss before plan.

Interactive briefing of a plan file - explains reasoning, schema decisions, component choices. Use when developers need to understand a plan before approving.

Trace Elixir call trees from entry points via mix xref. Use when debugging data flow, planning signature changes, or understanding how a bug reaches code.

Challenge mode reviews - rigorous questioning before approving changes. Use when you want thorough scrutiny of Ecto changes, LiveView events, OTP designs, or PR readiness.

Searchable Elixir/Phoenix/Ecto solution documentation system with YAML frontmatter. Builds institutional knowledge from solved problems. Use when consulting past solutions before investigating new issues.

Capture solved problems as searchable solution docs. Use after fixing bugs, when "that worked", or after successful /phx:review or /phx:investigate.

Elixir/Phoenix deployment patterns - Dockerfile, fly.toml, runtime.exs, mix release, rel/ overlays. Use when configuring Fly.io, Docker, CI/CD, health checks, or production migrations.

Audit Hex deps for supply-chain security risk - bidi chars, compile-time exec, maintainer changes, typosquats, CVEs. Use after mix deps.update, when checking if a package upgrade is safe, or reviewing mix.lock PR diffs.

Bump outdated Hex deps - inventory, snapshot changelogs, update, fix breaks, split reviewable PRs (patches bundled, majors solo). Use to upgrade/bump Elixir dependencies or when versions fall behind. NOT for deps.get …

Record a vetted Hex package version in hex_vet.exs after a security review - manages the audit ledger, not the scanner. Use to approve a dep after /phx:deps-audit findings or to initialize hex_vet.exs.

Generate @moduledoc and @doc strings for Elixir modules, contexts, and schemas. Use when explicitly asked to write @doc/@moduledoc - NOT for README or external docs.

Debug Ecto constraint violations - trace triggers, check migrations, find duplicate data. Use when seeing unique_constraint, foreign_key_constraint, or check_constraint errors.

Ecto patterns - schemas, changesets, queries, migrations, Multi, associations, preloads, upserts. Use when editing Repo calls, Ecto.Query, or schema fields. Skip for Ash.

OTP/BEAM patterns and Elixir idioms - GenServer, Supervisor, Task, Registry, pattern matching, with chains, pipes. Use when designing processes or debugging BEAM issues.

Provide examples and walkthroughs for Phoenix, LiveView, Ecto, OTP patterns. Use when "how do I...", "show me an example", or "what does X look like".

Scope or freeze which files Claude can edit during debugging, a refactor, or review. Use when edits should stay in specific dirs, or for a read-only investigate lock. Backed by a sentinel + PreToolUse hook.

Use for large features spanning multiple contexts or autonomous end-to-end implementation. Runs the full plan-implement-review-compound cycle with specialist agents. NOT for executing an existing plan file - use /phx:…

Recommend the right /phx: command for planning, review, debug, deploy, or test tasks. Use when \"which command\", \"what should I use\", or \"how do I\". NOT for /help.

Fetch HexDocs for Elixir libraries with HTML-to-markdown conversion. Use when looking up docs on hexdocs.pm - modules, functions, guides, changelogs.

Initialize plugin in a project - install Iron Laws, auto-activation rules, and reference auto-loading into CLAUDE.md. Use when setting up or updating the plugin.

Route ambiguous Phoenix/LiveView/Ecto work requests to the correct /phx: workflow. Use when intent is unclear, mixed (bug fix vs. refactor), or scope is ambiguous.

Walk through the Elixir/Phoenix plugin commands, workflow, and features in 6 interactive sections. Use when a new user wants to learn what the plugin offers or needs a refresher on available commands.

Investigate bugs and errors in Elixir/Phoenix - root-cause analysis for crashes, exceptions, stack traces, test failures. Use --parallel for deep 4-track investigation.

Capture lessons after fixing a bug or receiving a correction - ecto, liveview, oban, iron law mistakes. Use when the user corrects your approach or teaches a pattern.

Build LiveView: async data (assign_async), PubSub (check connected?), phx-change events, form components/modals/uploads, streams for lists, live_patch. Use when handling interactions, debugging events, or tracking Pre…

Reduce mix output noise (5-15% token savings) by installing rtk filters that compress mix test/credo/dialyzer/compile output before it reaches Claude. Use when long mix output floods context.

Detect N+1 query anti-patterns specifically - Repo calls inside Enum/for loops, missing preloads on associations. Use when N+1 is explicitly suspected, NOT for unrelated Ecto questions or wider database performance.

Narrow bare rescue in Elixir so real errors like KeyError and typos propagate instead of being swallowed. Use to audit rescues and refactor error handling.

Oban job processing - workers, perform/1 (OSS) and process/1 (Pro), queues, cron, retries, unique jobs, idempotency, Oban Pro (Workflow, Batch, Chunk, Smart Engine), Testing. Use when writing Oban workers, queue confi…

Analyze Elixir/Phoenix performance - N+1 queries, assign bloat, ecto optimization, genserver bottlenecks. Use when slowness, timeouts, or high memory reported.

Recommend safe Bash permissions for Elixir mix commands in settings.json. Use when permission prompts slow workflow, "fix permissions", "reduce prompts", "auto-allow mix".

Phoenix context design - creating/splitting contexts, Scope (1.8+), Ecto.Multi, PubSub, routers, plugs, controllers. Use when editing contexts, routers, or designing boundaries.

Plan features spanning multiple domains: billing (Stripe), auth (RBAC), real-time (Presence), webhooks, jobs (Oban). Use when designing interconnected systems or converting review findings into tasks.

Address PR review threads on Elixir/Phoenix code - fetch unresolved threads, fix code, reply, and resolve each thread. Use when the user shares a PR URL or mentions reviewer feedback.

Implement small Phoenix changes without planning - add validations, update routes, fix components, create migrations. Use for single-file edits under 50 lines.

Recall prior work from past sessions - how a bug was fixed, what was decided, where a pattern lives. Use when asked 'have we done this before' or 'how did I fix X' in Elixir/Phoenix work. ccrider MCP when available, e…

Research Elixir/Phoenix topics or evaluate Hex libraries (--library). Use when learning about libraries, patterns, or comparing approaches. Searches HexDocs, ElixirForum, GitHub.

Review code with parallel agents - tests, security, Ecto, LiveView, Oban. Use after implementation to catch bugs and anti-patterns before committing.

Enforce Elixir/Phoenix security - auth, OAuth, sessions, CSRF, XSS, SQL injection, input validation, secrets. Use when editing auth files, login flows, RBAC, or API keys.

Analyze Elixir/Phoenix technical debt - duplicates, refactoring opportunities, credo issues. Use when asked about code quality, cleanup, or what to improve.

Elixir testing patterns - ExUnit, Mox, factories, LiveView test helpers. Use when working on *_test.exs, test/support/, factory files, or fixing test failures.

Tidewave MCP runtime tools - debugging, smoke testing, live state inspection, SQL queries, hex docs. Use when evaluating code in a running Phoenix app.

Triage review findings interactively - approve, skip, or prioritize each issue. Use after /phx:review to filter findings before fixing.

Verify Elixir/Phoenix changes - compile, format, and test in one loop. Use after implementation, before PRs, or after fixing bugs.

Watch an Elixir/Phoenix PR for new review comments (bot + human) and CI results via a background watcher that wakes Claude only on real events. Use after opening a PR or pushing, while waiting on CI or reviewers.

Execute Elixir/Phoenix plan tasks with progress tracking. Use after /phx:plan to implement features with mix compile and mix test verification after each step, or --continue to resume interrupted work.