bigquery
Use bigquery CLI (instead of `bq`) for all Google BigQuery and GCP data warehouse operations including SQL query execution, data ingestion (streaming insert, bulk load, JSONL/CSV/Parquet), data extraction/export, dataset/table/view management, external tables, schema operations, query templates, cost estimation with dry-run, authentication with gcloud, data pipelines, ETL workflows, and MCP/LSP server integration for AI-assisted querying and editor support. Modern Rust-based replacement for the Python `bq` CLI with faster startup, better cost awareness, and streaming support. Handles both small-scale streaming inserts (<1000 rows) and large-scale bulk loading (>10MB files), with support for Cloud Storage integration.
gspace
Use gspace CLI (command-line tool) and MCP tools for Google Workspace operations including Drive file management, Gmail, Docs, Sheets, Calendar, and Tasks. Both CLI commands (via Bash) and 40+ MCP tools are available.
jira
Use jira CLI for Jira operations including issue management, project queries, transitions, and JQL search
lancer
Use lancer CLI for LanceDB semantic and multi-modal search with document ingestion, vector embeddings, and MCP server integration for knowledge retrieval.
phab
Use phab CLI for Phabricator task management, code review workflows, revision creation and updates, with Git integration and auto-detection features.
qmd
Use qmd for workspace search — hybrid BM25+vector search with Qwen3-4B reranking over indexed workspace documents. Not to be confused with Quarto documents (.qmd files).
az
Use az CLI for Azure cloud resource management, Azure DevOps operations, VMs, storage, networking, AKS, and Key Vault with comprehensive authentication and output control.
claude-cli
Use claude CLI for interactive AI sessions, scripting with print mode, MCP server management, and plugin configuration. Master session management, tool control, and automation workflows.
bugfix-dispatcher
Protocol and launcher for running the bugfix-dispatcher resident session. Routes incoming bug reports and feature requests from other Claude Code sessions into isolated builds on easypost-sandbox repos, independently verifies against merge bars (tests, code review), and auto-merges or opens PRs. Use when maintaining a long-lived dispatcher-role session via `bin/bugfix-dispatcher-launch`. Don't use for one-off builds or repos outside easypost-sandbox.
data-pipeline
Data pipeline architecture patterns and best practices, including medallion/three-layer architecture (Raw/Staging/Enriched or Bronze/Silver/Gold), YAML-based schema management, and ETL workflow patterns. Use when designing or implementing data pipelines, working with data warehouse layers, or managing table schemas in YAML.
dispatcher
Generic protocol for a resident work-dispatcher session attached to a repo — receives change requests via cross-session messages, builds each in an isolated background worker session, independently verifies the result, and merges, opens a PR, or applies per a per-repo config. Generalizes recover-on-start, per-resource locking, a global WIP ceiling, launch verification, edge-triggered idle subscription, a mechanical merge/apply bar, and safe cleanup, as proven in bugfix-dispatcher, infra-dispatcher, and matrix-dispatcher. Use when attaching an autonomous work-dispatcher to a repo receiving change requests via cross-session messages, or standing up a new domain-specific dispatcher. Don't use for a one-off task with no recurring request stream, a repo that doesn't want autonomous merges/PRs/applies, or to modify bugfix-dispatcher, infra-dispatcher, or matrix-dispatcher themselves — those are independent, already-in-production skills.
distill
Reduce a document to its minimum effective dose — the least information needed to fully convey the purpose and key concepts. Use when asked to simplify, condense, distill, or strip a document down to essentials. Don''t use for paraphrasing or adding explanation. Triggers on: "simplify this", "distill this", "trim this down", "what''s the minimum here", "make this shorter without losing anything important".
duckdb
Use DuckDB for analytical SQL over local CSV, JSON, Parquet, and Excel files - aggregations, joins, window functions, statistics, and data profiling without an import step.
gcp
Google Cloud Platform patterns and quirks — general GCP infra (IAM roles, Cloud Run deploy mechanics, Secret Manager, Cloud Monitoring) plus Vertex AI specifics for Claude/Anthropic models. Use when working with GCP infrastructure generally (IAM, Cloud Run, Secret Manager, monitoring), not only when Vertex AI or Claude-on-Vertex is involved. For OpenTofu/Terraform resource authoring see the opentofu skill; for GitHub Actions CI/CD auth and deploy workflows see the github-actions skill; for BigQuery query cost discipline see the bigquery skill — this skill covers the GCP service-level behavior those skills build on top of.
github-actions
GitHub Actions workflow design for deploying to GCP — Workload Identity Federation (keyless OIDC), per-resource least-privilege IAM, path-filtered multi-workflow layouts, and digest-based Cloud Run deploys. Use when creating or editing .github/workflows/*.yml that build/push images or deploy to GCP, when setting up CI auth to a cloud provider, or when a workflow needs to trigger on specific file paths for one of several deployable components in the same repo.
javascript
Node.js and JavaScript development patterns, gotchas, and library compatibility notes. Use when working with Node.js projects, TypeScript, React, antd, Zustand, Playwright, Bun, or Vitest.
josh-email-voice
Writing style and workflow conventions for drafting email as Josh Lane (CTO, EasyPost). Apply whenever drafting a Gmail reply or note on his behalf. Don't use it for Slack messages (use josh-slack-voice instead), formal HR/legal documents, or communications from EasyPost as an organization.
looker-development
Develop LookML against a live, GitHub-CI-integrated Looker instance (the official "Looker Continuous Integration" GitHub App plus git-connected deploy). Use when debugging `looker/ci - Github CI - *` GitHub check failures or silence, setting up Looker CI (GitHub App install, CI Suite creation, deploy webhook) for a repo that doesn't have it yet, onboarding a new LookML model, diagnosing a connection/SQL Validator failure, or trying to shift feedback left before the multi-minute CI round-trip. Not for querying/searching an existing Looker catalog for data (see the `looker` skill) or for BigQuery cost/query mechanics (see the `bigquery` skill).
matplotlib
Figure engineering patterns, gotchas, and reusable helpers for matplotlib. Use when directly building standalone figure scripts, diagram generators, or canvas visuals outside the epq render pipeline — e.g., generate_layer_icons.py, vision project banners, morning-brief charts, competitive analysis figures. Covers shape boundary math, arrow/edge geometry, series consistency, font registration, zorder, Unicode rendering, and canvas clipping. Distinct from the epq skill (which covers the Quarto/LaTeX analysis pipeline). Load alongside epq when figure work involves both the pipeline and standalone diagram construction.
methodology
Consolidated reference for phased execution (continuous work through genuine blockers only, adaptive todo granularity), visual communication standards (Mermaid, formatted tables, LaTeX instead of raw data), and verification tiers for code changes. Load when working through multi-step tasks needing phased-execution guidance or designing test/review gates for a code change. Don't use for project-specific tool tutorials or EasyPost domain procedures — refer to domain-specialized skills instead.
operating-lessons
Situational verification, delegation, and coordination rules: sub-agent output trust (numeric claims, data availability, infra, hallucination), peer-session coordination, receipt-contract agents, worktree/briefing gotchas, interactive-tool/auto-approve pressure, search/1Password gotchas, and technical corrections (BigQuery join fanout, replace_all safety, interactive Bash prompts, worktree cleanup order). Use before messaging a peer session or asking Josh a scoping/sequencing question; reviewing sub-agent output before surfacing it; briefing an Agent call or choosing a receipt-contract agent; targeting, finishing, or merging a worktree-isolated branch (including an orchestrator git refusal on the shared checkout); running an apply or interactive tool under auto-approve; searching for an internal company document; or double-checking a verification/safety procedure from CLAUDE.md. Don't use for general TDD, git commit conventions, or domain gotchas covered by git, javascript, python, or bigquery skills.
org-announce
Draft org-level or company-wide announcements (reporting changes, promotions, departures, strategy, business decisions). Produces email and Slack formats in one invocation. Enforces Josh Lane's register: terse, declarative, no sentiment, no signature, no sycophantic close. Use when asked to draft an announcement, org update, or leadership communication.
qmd-math
Math notation conventions for Quarto/EPQ documents rendered via lualatex. Use when: writing or adding a formula, equation, or mathematical expression to a .qmd file; asked about display math, inline math, or LaTeX notation in a QMD/Quarto context; defining a where-clause or variable definitions for an equation; converting prose variable descriptions into structured math notation; fixing math that renders badly in a PDF; using \lvert, \begin{aligned}, \tfrac, \text{where}, or any LaTeX math command in a Quarto document. Triggers on: "write a formula", "add an equation", "math notation", "where clause", "display math", "LaTeX equation", "define variables", "simplify the formula", "typeset this".
report-infra-work
Report an infrastructure change need in platform-infra (Josh's current primary repo for this category, migrating off the legacy easypost-enterprise-platform-infra / enterprise-platform-bootstrap since 2026-09-24) to the infra-dispatcher session instead of working around it inline or building a PR. Use when a need arises for a new GCP resource, IAM grant, DNS record, GitHub org/repo setting, or Jira config change in platform-infra or either of the two legacy repos, and building it isn't part of the current task.
analysis
Analyze feature requirements, dependencies, and security considerations. Use when starting feature implementation from GitHub issues to understand scope, technical feasibility, and risks.
design
Design system architecture, API contracts, and data flows. Use when translating analyzed requirements into technical design for feature implementation.
implementation
Implement features with code, tests, and documentation. Use when building features from approved designs following TDD and project coding standards.
validation
Validate code quality, test coverage, performance, and security. Use when verifying implemented features meet all standards and requirements before marking complete.
accessibility-checker
Validate WCAG 2.1 Level AA compliance and accessibility best practices.
skill
TODO: Brief description of what the Skill does and when to use it
api-designer
Design REST APIs or function contracts with clear request/response specifications,
api-test-generator
Generate comprehensive API endpoint tests for REST and GraphQL APIs.
architecture-planner
Design component architecture and module structure using established
changelog-generator
Generate CHANGELOG entries following conventional commits format with
code-reviewer
Review code for quality, security, and performance with comprehensive
coverage-analyzer
Analyze test coverage with detailed metrics, identify gaps, and generate
data-modeler
Design data models with Pydantic schemas, comprehensive validation rules,
dependency-analyzer
Analyze project dependencies, build dependency trees, detect conflicts,
design-synthesizer
Auto-activates when synthesizing outputs from multiple parallel sub-agents
doc-analyzer
Analyze and extract relevant patterns, best practices, and usage examples
doc-fetcher
Fetch library and framework documentation via context7-mcp and fetch-mcp
documentation-updater
Update all project documentation including implementation docs, user
e2e-test-writer
Write comprehensive end-to-end tests using Playwright with page object
file-permission-test
File permission test. Use for testing.
integration-test-writer
Generate comprehensive integration tests for component interactions,
jest-generator
Generate Jest-based unit tests for JavaScript/TypeScript code. Creates
owasp-checker
Verify compliance with OWASP Top 10 2021 security standards. Use when
permission-test-skill
Permission test. Use for testing.
planning-doc-generator
Generate project assessment markdown documents from JSON data with WHY/WHO/WHAT
pr-creator
Create comprehensive pull requests with detailed descriptions, test plans,
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