Claude Plugins

Build with MPP (Machine Payments Protocol), open machine-to-machine payments over HTTP 402. Use for paid APIs, payment-gated endpoints, agent payment flows, MCP tool payments, or metered billing. Covers mppx (TS), pympp, and mpp Rust SDKs.

Build internet-native payments with x402 - HTTP 402 for on-chain micropayments, no accounts or API keys. Use for paid APIs, paywalled content, agent payment flows, or per-call MCP tools. TypeScript, Python, and Go SDKs across EVM and Solana.

GitHub CLI for remote repository analysis, file fetching, codebase comparison, and discovering trending code/repos. Use when analyzing repos without cloning, comparing codebases, or searching for popular GitHub projects.

Opinionated Go setup with golangci-lint v2, gofumpt, gotestsum, golang-migrate, and just. Use when starting a Go project, configuring lint, format, test, coverage or CI, writing a Justfile, wiring migrations, or leaving a Makefile workflow.

Pre-release code review - runs lint and type checks, launches parallel review agents (cleanliness, design, efficiency, side-effect gating) on the diff, validates findings, fixes on approval. Run when asked to polish before committing or pushing.

Run coding agents (codex, claude, Antigravity/agy) headlessly through the acpx ACP CLI. Use before launching or prompting an acpx subagent, and when an acpx command fails, a session is not found, or a prompt seems lost.

Build with ERC-8004 Trustless Agents - on-chain agent identity, reputation, validation, and discovery on EVM chains. Use when registering agents on-chain, building agent reputation, or using the Agent0 SDK. Triggers on ERC-8004 and Agent0.

Day-1 guide to building well in Rust - ownership, errors as values, String vs &str, Box/Rc/Arc, anyhow vs thiserror, and a crate shortlist (tokio, serde, axum, sqlx). Use when starting a Rust project, fighting the borrow checker, or picking crates.

Type-safe React with TanStack Query (fetching, caching, mutations), Router (file-based routing, search params, loaders), and Start (SSR, server functions). Use for react-query, server state, typed search params, route loaders, or SSR.

Effect-TS guide for TypeScript, v4 default with v3 support. Use when writing, debugging, or reviewing Effect code across errors, concurrency, services, streams, and schema, or when code imports from 'effect' or any '@effect/*' package.

Launch and drive coding agents (codex, claude, agy) through the Herdr CLI. Use before starting or prompting a subagent via herdr agent or pane commands, and when a herdr command fails or an agent seems stuck or silently lost a prompt.

Pre-release code review that converges - parallel review agents sized to the diff, findings validated against evidence in a run ledger, fixes on approval, then re-reviews its own fixes until a round warrants no edits. Run on /polish-new.

Opinionated Python development setup with uv, ty, ruff, pytest, lefthook, and just. Use when creating a new Python project, writing or fixing pyproject.toml, or configuring linting, formatting, type checking, testing, git hooks, or CI.

Prepare the session for context compaction - write a handoff file a fresh session can continue from, propose updates to the project's durable docs, apply them on approval or with `auto`. Use before compacting or clearing context, or on "pre-compact".

macOS apps with Swift 6.3, SwiftUI, SwiftData, Swift Concurrency, Foundation Models, Swift Testing, and ScreenCaptureKit. Use when building native Mac apps - windows, menus, SwiftData, on-device AI, capture, AppKit bridges, notarization.

Deep reference for Lance v12 columnar format, its Rust crates, and pylance - file encodings, table format, indexes, schema evolution, time travel. Use when building on the Lance crates or reading .lance datasets, not the LanceDB product.

Thorough on-demand refresh of one skill in a skills repo - researches usage, upstream, and docs in parallel, gates twice for approval, bumps version, updates CHANGELOG, validates, commits, watches CI. Use to check a skill's freshness.

Full-stack TypeScript with Vite 8, React 19, Tailwind v4, shadcn/ui, Biome, Vitest, and Hono 4. Use when setting up or working in a TypeScript project - components, styling, build and HMR, tests, lint/CI, or a Hono API with type-safe RPC.

Writes or audits READMEs against the Standard Readme spec. Use whenever the user asks to create, rewrite, improve, audit, or fix a README, or asks about README quality or structure - even if they never mention "standard readme".

Decision validation and thinking frameworks for founders. Use to pressure-test a decision, validate next steps, or sanity-check an approach - "should I", "help me think through", "what am I missing". Covers fundraising, customers, runway.

Build and test Solidity contracts with Foundry. Use when developing Ethereum contracts, writing Forge tests, deploying with scripts, or debugging with Cast/Anvil. Triggers on forge, cast, anvil, foundry.toml, *.t.sol, or *.s.sol.

Reviews a GitHub pull request end to end - fetches the diff, runs checks, analyzes with three parallel agents (correctness, conventions, efficiency), validates every finding against the code, drafts inline comments with a recommended action.

Write clear, emotionally resonant, and well-structured content that readers remember and act upon. Use when writing or editing any text - Twitter posts, articles, documentation, emails, comments, updates - for maximum clarity, engagement, and impact.

Build, harden, and debug production MCP servers with the TypeScript SDK. Use when writing or reviewing an MCP server - transports, tool schemas, errors, OAuth, token bloat, SDK migrations, MCP Apps, Registry. Assumes a server already exists.

Build, test, deploy, and audit Solana programs with Anchor or native Rust, plus ZK Compression (Light Protocol). Use for Solana contracts, token operations, compute optimization, deployment, program audits, or compressed tokens and PDAs.

Build Chrome extensions with the WXT framework and TypeScript, React, Vue, or Svelte. Use when creating browser extensions or cross-browser add-ons. Triggers on "chrome extension", "browser extension", WXT, manifest v3, or wxt.config.ts.

Opinionated best practices for building Agent Skills - SKILL.md structure, frontmatter, description writing, progressive disclosure, testing, distribution. Use when creating or reviewing a skill, or debugging why one will not trigger.

Durable project knowledge as Git-native OKF bundles (docs/knowledge/, one concept per file, with provenance and trust tiers). Use to record a decision, finding, or rule that must outlive the session. Not session state or agent instructions.