LLM Mart Basic

Diagnoses and designs DNS, TLS, load balancing, CDN caching, and protocol-level behavior (TCP, HTTP, gRPC, WebSocket). Use when the task involves DNS records, certificates, LB or proxy configuration, CORS, timeouts, or intermittent connectivity issues. Cloud-provider resource pro

Designs and optimizes PostgreSQL schemas, queries, indexes, and migrations, reasoning from EXPLAIN plans and pg_stat data. Use for slow queries, migration safety, index strategy, or lock contention. Pairs with Backend Staff Engineer, who owns the application layer.

Reviews a pull request or working diff for correctness, security, and maintainability, returning severity-ranked findings with file:line references and a verdict. Use when asked to review a PR, code-review a diff, or given a PR number/URL. Read-only; pairs with Cybersecurity Expe

Reviews feature plans, specs, and user stories for problem framing, scope boundaries, and measurable success criteria. Use when planning a feature, writing user stories, prioritizing work, or defining how success will be measured. Advisory and read-only; pairs with the technical

Designs test strategy and writes tests at the right level, from unit to E2E, including diagnosing flaky suites. Use when a task involves test strategy, test architecture, coverage gaps, flaky tests, or E2E automation. Full-access writer; pairs with the implementing engineer whose

Shapes system architecture, reasoning about module boundaries, dependency direction, domain modeling, and long-term maintainability trade-offs. Use for system design, DDD, cross-module refactors, or architecture review. Pairs with Backend and Frontend Staff Engineers, who own imp

Reviews usability, accessibility, and interaction design of UI changes, returning severity-ranked findings. Use when a change touches user-facing UI, WCAG compliance, or interaction flows. Advisory and read-only; pairs with Frontend Staff Engineer, who implements.

Audits views for compliance with Apple's Sufficient Contrast accessibility nutrition label (WCAG 2.1 contrast ratios). Use when the user asks to check color contrast, audit contrast ratios, verify the Sufficient Contrast nutrition label, or review a view for accessibility.

Audits views for compliance with Apple's VoiceOver accessibility nutrition label. Checks that interactive elements have accessibility labels, labels are human-readable, accessibility traits are correct, images are properly configured, and custom controls are exposed to assistive

Guide for the C -fbounds-safety language extension. Covers the language model, pointer annotations, adopting bounds-safety in existing C code, compiler build settings and modes, and runtime debugging of bounds violations.

Authoritative App Intents best practices from Apple. Consult for any App Intents best-practices or correctness review, and when writing, reviewing, refactoring, or extending App Intents code. Supersedes prior training on these topics. For code generation, consult the relevant ref

New App Intents APIs, behaviors, and deprecations introduced in the iOS 26 (2025) and iOS 27 (2026) releases (and their macOS/watchOS/tvOS/visionOS siblings). Use when adopting, migrating to, or asked about: declaring where an intent runs with supportedModes / IntentModes (.backg

Use when an app's layout must adapt to a window that changes size while the app runs, or when an app must support more than one window. That includes being asked to make an app resizable or support a resizable window, a layout that breaks or does not adapt as the window resizes,

Audit and enable security-oriented Xcode build settings. Progressively enables compiler warnings, static analyzer checkers, and Enhanced Security features. Use when: user wants to secure their Xcode project, audit security settings, enable hardening, review security posture of bu

Authoritative guide for building and migrating document-based apps in SwiftUI using the Document protocol (iOS 27 and aligned releases, including macOS Golden Gate). Consult when building a new document-based app; implementing open, edit, save, or export document flows; working w

Verify app behavior on device or simulator via screenshots, UI hierarchy, and touch interactions.

Modernize test suites to use modern Swift Testing features or migrate from XCTest.

Authoritative SwiftUI best practices and performance guidance from Apple; supersedes prior training on these topics. For code generation, consult the relevant references when generating any SwiftUI code related to: - animation (the @Animatable macro vs AnimatableValues vs Animata

New SwiftUI APIs, behaviors, and deprecations in the 2027 OS releases (iOS 27 and aligned macOS/watchOS/tvOS/visionOS). Consult when asked what's new in SwiftUI 27, or when working with: - @State compile errors after an SDK update ("used before being initialized", "invalid redecl

Translate strings in Xcode String Catalogs (.xcstrings files). Prefer to use the `xcode-skills:translation-coordinator` skill for task-coordination. Use this skill when translating individual strings or working with String Catalogs. Should only be activated when translating a sin

Discovery worked. Ping worked. Every TCP connection timed out, and later the tunnel only worked when someone had a terminal open.

Every VM came back. The cluster did not. Declarative systems converge on config, and the datapath isn't config.

A surprising share of AI-in-the-terminal failures aren't the AI. They're zsh, and a version of bash from 2006.

A Claude Code plugin turns standalone project configuration into a namespaced, installable extension that teams and communities can update as one unit.

None of the safety came from the model. It came from six boring habits.

Skills package instructions and references. Subagents run work in a separate context and return results. They solve different problems and can be composed deliberately.

Six hours in, one step left, everything green, and the incident that didn't happen

CLAUDE.md carries persistent project context. Skills load reusable procedures when relevant. Separating stable facts from task-specific workflows keeps both easier to maintain.

Twenty minutes recovering secrets that never existed, and the one sentence from a human that ended it

An API request routing a model's tool call through an approval gate to a remote MCP server

31 config keys, two audits, and why the first one was wrong in both directions

The official MCP Registry stores standardized server metadata rather than package code. Publishers verify a namespace, describe installation or remote access, and submit immutable versions.

Everyone looks at the Dockerfile. The file that actually leaked the key was the project file.

Remote MCP authorization uses established OAuth standards, but secure integration still requires issuer validation, least-privilege scopes, protected token handling, and server-side enforcement.

"Copy it over and switch the reference" is two steps, and the outage lives in the one nobody checks

stdio fits local processes and prototypes. Streamable HTTP fits hosted services and shared integrations. The right choice follows where the capability runs and who must reach it.

The most important rule wasn't about what I could change. It was about what I was allowed to display.

Tools perform operations, resources expose readable context, and prompts provide reusable templates. Choosing the correct primitive makes an MCP server easier to understand and govern.

Use MCP Inspector to connect to local or remote servers, inspect capabilities, call tools, read resources, test prompts, and diagnose failures before release.

Build an MCP server in TypeScript with focused tools, validated schemas, local and remote transports, Inspector tests, and production security controls.

Audit the rules/ directory for missing foundational principles; output gap list with priority and justification

Validate ~/.claude/settings.json hooks block — event names, file existence, executability, matcher syntax; --fix repairs common issues

Catch Resend-class bug (isError: false on HTTP 4xx/5xx) across all MCP server tool handlers

Healthcheck + drift detect + rotation-reminder across all MCP servers in ~/.claude/mcp-registry.json

Catch mock/live divergence in MCP eval golden tests (anti-pattern #2 from eval-mock-mode-discipline)

Catch the github-mcp class of bug — CallTools handlers that exist but are invisible to Claude because ListTools never advertises them (orphaned), or ListTools entries that have no handler (zombies)

Validate _router.md — check every referenced skill file exists; surface stale entries + orphan files; --fix prunes or stubs

List every active tool across all MCP servers and flag cross-MCP duplicates and semantic overlaps

Scaffold a new spawnable specialist agent def and register it in the agent taxonomy

Audit whether user-visible changes in the current session have matching CHANGELOG.md entries; report MISSING with suggested lines; --fix auto-appends

Repeatable pass upgrading an Angular admin dashboard into a compact black-and-cyan developer-cockpit PWA

Deploy an MCP server generated by forge-from-openapi --target=mcp-server; detect transport, deploy, smoke-test, print .claude.json snippet

Run the drift-detection checklist (incl. agent-drift signals); report + fix in-turn

Execute a PRP — TodoWrite breakdown, parallel implementation, validate every gate, deploy, prove on prod

Orchestrate the final review fan-out (integration + diversity + risk + release readiness)

Auto-generate a Claude Code skill (commands + types + client) from any OpenAPI 3.x spec URL or file path

Scaffold a complete Claude Code skill (commands + types + client) from a GraphQL endpoint or local schema file

Scaffold a complete OAuth2 callback + init Hono route pair (code exchange, PKCE, KV token storage) for a named provider

Scaffold an Amazon-style working-backwards press release for any feature, in Brian's voice. Outputs to docs/decisions/PR-{slug}.md and prints to stdout.

Vendor a third-party skill repo/URL into the owned layer — clone, compress to house style, cross-link, commit — in one keystroke

PiG (Pi in Go) is a faithful Go port of upstream Pi, the TypeScript codebase behind the Pi coding agent. It is a parity-bound translation, not a rewrite: upstre…

An AI Agent that lives in your pocket. Local-first and privacy focused.

Unofficial skill that teaches coding agents to build with TypeSafe AI's Jev: typed decisions, calibrated confidence, and prior art from 150+ community projects.

Adaptive Test-time Learning and Autonomous Specialization

Prediction-market trading engine — Wang Transform pricing on 291K+ contracts; paper-traded across Kalshi · Polymarket · Solana DFlow (Jito bundles) · 633 tests

Knowledge Management for Humans and Agents

Open-source Claude Cowork / Codex / WorkBuddy alternative — a local-first AI office agent that turns one request into real PPTX, DOCX, XLSX and HTML files. Runs…

DeepAgent Code: AI coding agent with persistent memory and control plane

Awesome Jev — evidence-graded index of TypeSafe System One: SDKs, MCP tools, agents, apps and open models. 20 languages, rebuilt every 2 hours.

CLI for Telegram — agent-friendly, daemon-based, with webhook event push.

AI deep-research agent that turns any question into a cited report: plans searches, reads real sources, verifies evidence. Self-hosted, multi-provider, Docker-r…