Write, review, and refactor styles using Tailwind CSS v4 conventions. Consult guidance on CSS configuration, renamed classes, built-in styling features, and behavior changes when updating older v3 code or creating new styles.
Review code for performance bottlenecks across database queries, memory use, frontend rendering, network requests, and algorithms. Use a structured checklist to identify optimization opportunities and classify their severity according to expected load and scale.
Run smoke tests, or basic operational checks, for Mastra projects locally or in staging and production. Verify Studio screens, agents, tools, workflows, traces, and memory, then report results, blockers, and skipped checks.
Design research agents that search, read, and turn web or internal sources into clear reports. The playbook defines source freshness, citations, search limits, and a consistent format that separates findings from information the agent could not verify.
Design and audit an agent's system prompt, the instructions that guide its work. Define a concrete outcome, starting input, available tools, completion checks, fallback behavior, and final report so the prompt describes a complete run.
Review a GitLab merge request linked to a Factory work item, verify the current commit, and publish findings with a test report. It records the review verdict on the card and prepares a session handoff without merging.
Design instructions for agents that write, fix, review, or refactor code. Define behavior based on file access, select suitable tools, and set clear verification and completion rules for repository changes or copyable code output.
Split a large pull request into smaller, reviewable changes. Plan branch dependencies, extract related code, verify each part, and track review changes while preserving the intent of the original work.
Convert suitable diagrams in Mastra documentation into Mermaid, a text format for diagrams, or create new ones. Assess which images to keep, follow diagram styling rules, and verify layout and readability in light and dark modes.
Investigate difficult bugs by adding temporary logs to the actual execution path and reproducing the reported behavior. Analyze JSONL logs, which store one structured event per line, then fix the cause, verify regression tests, and remove debugging artifacts.
Researches questions on the web and produces a concise answer with source links. Saves useful URLs and short quotations in a Markdown notes file, keeping findings available in the workspace for later reference.
Publish a Playground UI snapshot, a version for testing branch changes, through the npm release workflow. The skill checks publication results, updates the platform frontend's package versions and lockfile, and opens a pull request.
Publish a Mastra preview package from a pull request or branch. Check the exact commit, confirm publication, monitor the release workflow, and report verified npm tags with a ready-to-copy installation command.
Review code for security vulnerabilities using a checklist covering unsafe input, authentication, access permissions, secrets, and data exposure. Classify findings into four severity levels to distinguish exploitable flaws, issues needing investigation, and smaller improvements.
Investigates GitHub or Linear issues through code, change history, and reproduction attempts. Produces a structured handoff covering causes, assumptions, effort, and impact, then requests the appropriate Factory workflow stage update when applicable.
Design agents for recurring internal work such as scheduled posts, data synchronization, and event responses. Define triggers, duplicate prevention, approval boundaries, required integrations, and a consistent seven-field execution record for every run.
Build working web pages, application interfaces, and components with a clear visual direction. Shape typography, color, layout, and animation around the intended audience and purpose, producing coordinated design and code in HTML, CSS, JavaScript, React, or Vue.
Build and update Mastra application interfaces using existing components from @mastra/playground-ui. Follow shared visual styles, arrange layouts with Tailwind utilities, and connect themes and stylesheets while avoiding duplicated components or unsupported appearance overrides.
Coordinate multiple Mastra Code workers to investigate and fix GitHub issues in parallel. Keep each issue in a separate working directory, track progress in reports, review changes, and manage pull requests, reviewer feedback, and automated checks.
Create, edit, and reorganize Mastra documentation with guidance matched to the page type. Find the relevant rules for writing, links, navigation, shared components, diagrams, and redirects when reviewing pages or changing their structure.
Design agents that read, update, summarize, or sync spreadsheet data. Define how they select the right table, check existing values, verify writes, request confirmation for destructive changes, and report the exact rows and ranges processed.
Adds a one-line safety note before weather forecasts involving storms, flooding, extreme temperatures, or high winds. Uses a reference file to determine which conditions qualify as hazardous and need a warning.
Set up Herdr Kit and its Mastra Code integration, manage repository synchronization, and create or remove managed worktrees, separate working copies for review or development. The workflow checks supported operations and verifies the resulting manager state.
Triage a GitHub issue by reviewing its discussion, related issues, and fixing pull requests. Publish a concise comment with classification, severity, evidence, and the next action, then update a small set of triage labels.
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