Delegate costly research, coding, and testing to cheaper subagents while orchestrating from a frontier model, manage usage budgets to avoid surprise charges, visualize plans and code changes with interactive diagrams and status recaps, and surface task completion with a clear red/yellow/green status convention.
Based on adoption, maintenance, documentation, and repository signals. Not a security audit or endorsement.
README
Skills for coding agents
Small, composable skills for coding agents.
These skills are for teams that want the agent to stay sharp where judgment
matters: orchestration, review, planning, validation, and clear communication.
They are not a giant process framework. Install the pieces you want, adapt them
to your project, and let the model keep room to think.
Use Claude Fable as the orchestrator, architect, synthesizer, and final judge
while lighter agents handle token-heavy research, coding, testing, and log
reduction.
Solves for expensive-model waste: Fable should spend tokens on judgment, not on
reading every file, reducing every log, or manually running every browser check.
Apply the same orchestration as /efficient-fable to any high-cost frontier
model: preserve the expensive model for planning, tradeoffs, integration,
validation strategy, and final review; use cheaper agents for bounded heavy
lifting.
Solves for broad work that can be parallelized without asking the most expensive
model to do every scan and every edit itself.
Check current 5-hour and weekly usage before substantial work and between
parallel waves, then pause new execution at 95% until the active window is clear
enough to continue.
Solves for long-running agent sessions that accidentally exhaust the current
budget window mid-task instead of pausing cleanly and resuming with a
self-contained plan.
Turn ordinary text plans into rich interactive visual plans with diagrams, file
maps, annotated code, open questions, and UI/prototype review when useful.
Solves for plans that are too important to bury in chat. The output is
scannable, commentable, and intuitive enough for a human to approve before code
changes start.
Turn a branch, commit, or PR diff into an interactive visual recap with
annotated diffs, diagrams, API/schema summaries, file maps, UI state summaries,
and focused review notes.
Solves for diffs that hide the shape of the change. Reviewers can understand
contracts, architecture moves, schema changes, and UI impact before diving into
raw line-by-line review.
That installer is useful for quick copying, but it does not add the managed
AGENTS.md / CLAUDE.md instruction blocks or the PR Visual Recap GitHub
Action that pair well with these skills.
More by BuilderIO
Agent-Native Plan
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Generate and review coding-agent plans as structured documents with inline diagrams, annotated code walkthroughs, file trees, annotations, feedback, and HTML export.
Harness for Claude Code — skills, /harness:* slash commands, persona subagents, lifecycle hooks, and MCP tools without per-repo `harness setup`. Sibling plugins exist for Cursor, Gemini CLI, and Codex.
This skill should be used when the model's ROLE_TYPE is orchestrator and needs to delegate tasks to specialist sub-agents. Provides scientific delegation framework ensuring world-building context (WHERE, WHAT, WHY) while preserving agent autonomy in implementation decisions (HOW). Use when planning task delegation, structuring sub-agent prompts, or coordinating multi-agent workflows.
