wfbcargo_spawn_mcp: Skill for Claude Code

.claude/skills/savi-conductor/SKILL.md

savi-conductor is a skill for Claude Code from wfbcargo/wfbcargo_spawn_mcp. It costs 123 tokens per session (2,368 once invoked), scanned A, original, MIT.

A coordinator for building a game with Spawn, a system that delegates coding tasks to sub-agents. It tracks work in a Git-based wiki and checks completed changes with screenshots.

In plain words
What is it for?
Use it to delegate game-building tasks, keep durable task records, build one part yourself, and visually verify changes as they arrive.
Why use it?
It helps divide work among available sub-agents while avoiding duplicate assignments and treating a Git update alone as proof that work is finished.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions subagents.

This is wfbcargo/wfbcargo_spawn_mcp's own configuration. It tells Claude Code how to work on wfbcargo_spawn_mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything wfbcargo_spawn_mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to wfbcargo/wfbcargo_spawn_mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/wfbcargo/wfbcargo_spawn_mcp/main/.claude/skills/savi-conductor/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/wfbcargo/wfbcargo_spawn_mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for savi-conductor

README.md
[![agentmods](https://agentmods.dev/badge/skills/wfbcargo/wfbcargo_spawn_mcp/savi-conductor/github.svg)](https://agentmods.dev/skills/wfbcargo/wfbcargo_spawn_mcp/savi-conductor)
Your own site
<a href="https://agentmods.dev/skills/wfbcargo/wfbcargo_spawn_mcp/savi-conductor"><img src="https://agentmods.dev/badge/skills/wfbcargo/wfbcargo_spawn_mcp/savi-conductor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for savi-conductor

Your own site · 80×15
<a href="https://agentmods.dev/skills/wfbcargo/wfbcargo_spawn_mcp/savi-conductor"><img src="https://agentmods.dev/badge/skills/wfbcargo/wfbcargo_spawn_mcp/savi-conductor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 123 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,368 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00123 $0.02368
Opus 5 $0.00062 $0.01184
Sonnet 5 $0.00025 $0.00474
Haiku 4.5 $0.00012 $0.00237

Measured 9d ago against content hash d096052e95a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

savi-conductor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/savi-conductor/SKILL.md · 156 lines

How it starts

The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Savi conductor

You are the conductor of a Spawn build. Savi has up to 8 sub-agents (wisps); this loop keeps them fed from a durable wiki, builds one lane itself, and verifies what lands.

The one fact everything follows from

spawn_savi is fire-and-forget: no reply, no acknowledgement, no completion event, and no endpoint reports who pushed. The wiki is the reply channel the API won't give you — you keep the other half of the conversation on disk and reconstruct completion by inference (head moved and a screenshot matches intent). Three consequences run through this skill:

  • A head bump is not proof a task is done. Verify by looking, never by the version number alone. Head could move from Savi, the creator, a teammate, or your own push.
  • You cannot see which wisp owns which task. So hold a dispatched task for a few minutes on real evidence before re-sending it, and never dispatch more slices than there were free lanes.
  • The wiki outlives your context. When your chat is compacted, a fresh conductor re-enters by reading index.md and following links. Keep it true, or the loop rots.

Mode

Hybrid, self-scheduling. You build one lane yourself and fan the rest out. You pick your own next wake time from how full the fleet is. Run this in /loop dynamic mode (/loop /savi-conductor, no interval) so each tick ends by scheduling the next.

Preconditions (check every tick)

  1. A headed play session is open. It is both the wisp sensor (spawn_savi_status reads the open play page) and the screenshot verifier — the same window does both. If none is open, spawn_play_open first. The session is a server-side singleton that survives between wakeups, so normally you open it once on the first tick and every later tick finds it already up.
  2. One conductor per fleet. spawn_savi_status is account-wide across the studio. Two conductors would double-count vacancy and thrash Savi. If team mode is on, exactly one agent runs this loop; the others build their own claimed lanes.

Read the full file on GitHub · 156 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 156 lines · 123 tokens per session scan A d096052e95a6

Subscribe to this mod's changes

savi-conductor is a skill published in the GitHub repository wfbcargo/wfbcargo_spawn_mcp (3 stars, last pushed yesterday), licensed MIT. It adds 123 tokens to every session and 2,368 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.