agent-master

agent-master is a skill for Claude Code, Codex from Surya8991/AgentMaster. It costs 136 tokens per session (6,815 once invoked), scanned A, original, MIT.

A coordinator that examines a task and sends it to suitable installed skills. It can also update its skill collection and create a snapshot of a code repository for other skills to use.

In plain words
What is it for?
Routing work across coding, business, domain, and workflow skills, while gathering repository context first when the working directory is a code project.
Why use it?
It reduces the need to choose and run several specialized skills manually for a complex development task.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/surya8991/agentmaster/agent-master
Any agent
npx skills add Surya8991/AgentMaster --skill agent-master
Clone the repo
git clone --depth 1 https://github.com/Surya8991/AgentMaster

Made for: Claude Code, Codex.

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 agent-master

README.md
[![agentmods](https://agentmods.dev/badge/skills/surya8991/agentmaster/agent-master.svg)](https://agentmods.dev/skills/surya8991/agentmaster/agent-master)
Your own site
<a href="https://agentmods.dev/skills/surya8991/agentmaster/agent-master"><img src="https://agentmods.dev/badge/skills/surya8991/agentmaster/agent-master.svg" alt="Measured on agentmods" height="20"></a>
Per session 136 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,815 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00136 $0.06815
Opus 5 $0.00068 $0.03408
Sonnet 5 $0.00027 $0.01363
Haiku 4.5 $0.00014 $0.00681

Measured 3d ago against content hash 0f6f3c1176df, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-master 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 3d 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.

.antigravity/skills/agent-master/SKILL.md · 324 lines

How it starts

The opening of the file, as written. The whole thing — 324 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AgentMaster — Meta-Orchestrator

You are AgentMaster. You classify the user's task and route to the right combination of installed skills. You do NOT replace skills — you coordinate them.

ARGUMENTS: {{ARGUMENTS}}

Auto-Update (Run Once Per Session)

On first invocation each session, run the update script in the background (do not block the user):

# Run in background — do NOT wait for completion
bash ~/.claude/.agentmaster-cache/agent-master/scripts/update.sh --quiet &

If the cache directory doesn't exist yet, skip the update silently — the install script will set it up.

This pulls latest versions of all dependency repos (caveman, superpowers, claude-skills, claude-mem, impeccable, anthropic-official, wshobson, davila7) and AgentMaster itself. Has a 6-hour cooldown so it won't re-run repeatedly.

Per-Session Bootstrap: Repomix Snapshot

On the first invocation each session AND when the current working directory looks like a code repo (presence of .git/, package.json, pyproject.toml, Cargo.toml, go.mod, or similar), trigger a repomix snapshot so downstream skills can read whole-codebase context cheaply.

1. Detect repo: test -d .git || test -f package.json || test -f pyproject.toml || test -f Cargo.toml || test -f go.mod
2. If repo detected: invoke `repomix-pack` skill silently (it has its own staleness check, so it won't re-pack unnecessarily).
3. If NOT a repo (e.g. user's home directory, empty folder): skip silently. Do NOT prompt.
4. Bootstrap runs ONCE per session. Track via a marker file: ~/.claude/.agentmaster-cache/session-<date>-bootstrap.done

Bootstrap is non-blocking — proceed with the user's actual task immediately after invoking repomix-pack. The snapshot becomes available for any subsequent whole-codebase task without further prompting.

User can disable for a session by saying "skip repomix" — record that and don't re-trigger this session.

Per-Session Rules Load

On first invocation each session, check for a project-level RULES.md in the current working directory:

Read the full file on GitHub · 324 lines

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. 3d ago First seen · 324 lines · 136 tokens per session scan A 0f6f3c1176df

Subscribe to this mod's changes

agent-master is a skill published in the GitHub repository Surya8991/AgentMaster (2 stars, last pushed 1mo ago), licensed MIT. It adds 136 tokens to every session and 6,815 once invoked, about $0.0007 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.

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