humanlayer

Design, write, review, and test Fold's Effect v4 programs: descriptor-facing public APIs, deep services and layers, schemas, tagged failures, resource ownership, concurrency, and real-seam Effect tests. Use for Fold services, adapters, providers, event logs,…

Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module…

Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.

Control and test terminal applications with the termctrl CLI by reading visible screen state, driving named live sessions, sending typed keyboard input, waiting for text, collecting explicit evidence, recording timelines, marking important moments, and…

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include…

Enforce the no-useEffect rule when writing or reviewing React code. ACTIVATE when writing React components, refactoring existing useEffect calls, reviewing PRs with useEffect, or when an agent adds useEffect "just in case." Provides the five replacement…

Help the user understand the current topic visually with concise diagrams, code-shape sketches, and focused HTML artifacts.

interview the user to design an agentic control loop (sensor, controller, actuator under disturbances) tailored to their codebase, then build it as locally-runnable components plus a scheduled coding-agent workflow

build a repo-local skill and install a matching iterated coding-agent GitHub Actions workflow, prompt, memory file, and reference templates

narrow React component prop types to match live code paths

improve a CLAUDE.md file using <important if> blocks to improve instruction adherence

drive the vendored Durable Streams conformance suite toward 332/332 when a run, workflow, or maintainer asks to close conformance gaps; treat the conformance suite as the source of truth, not the current server implementation

use this skill when a user asks to set up RPI or a "research plan implement" workflow, or to do anything related to RPI skills. if the user says the acronym "RPI" or "rpi" or "humanlayer", you MUST use this skill! Example questions - "I want to set up rpi for…

Design, write, review, and test production Effect v4 programs: deep services and layers, schemas, tagged errors, observability, Config, persistence, resources, concurrency, schedules, workers, streams, caches, HTTP clients, Effect platform services (Node…

Browser automation CLI for AI agents. Use when the user needs to interact with websites, including navigating pages, filling forms, clicking buttons, taking screenshots, extracting data, testing web apps, or automating any browser task. Triggers include…