What is agent-loader?

A guide for discovering and loading named agent brains from a repository or user directory. An agent brain is a stored description and workflow for a specialized personal coding agent.

Use it to list available agents, inspect their descriptions or workflows, load one by name, or start work with a specialized agent configuration.

It helps identify which agents are available and load the right one without searching directories manually. It also distinguishes repository-scoped agents from user-scoped agents.

agent-loader — Skill for Claude Code and Codex by samzong/agent-brains

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.

Any agent

npx skills add samzong/agent-brains --skill agent-loader

Clone the repo

git clone --depth 1 https://github.com/samzong/agent-brains

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/samzong/agent-brains/agent-loader/github.svg)](https://agentmods.dev/skills/samzong/agent-brains/agent-loader)

Your own site

<a href="https://agentmods.dev/skills/samzong/agent-brains/agent-loader"><img src="https://agentmods.dev/badge/skills/samzong/agent-brains/agent-loader/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/samzong/agent-brains/agent-loader"><img src="https://agentmods.dev/badge/skills/samzong/agent-brains/agent-loader.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 906 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.

Model	Per session	Once invoked
Fable 5.1	$0.00050	$0.00906
Opus 5.5	$0.00020	$0.00362
Sonnet 5.5	$0.00010	$0.00181
Haiku 4.5	$0.00005	$0.00091

Measured 2mo ago against content hash f6f17156c0d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-loader 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 2mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/list_agents.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/agent-loader/SKILL.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Loader

Use this skill to list and load agent brains from two scopes:

REPO: $CWD/.agents/agents up to $REPO_ROOT/.agents/agents
USER: $HOME/.agents/agents

Repo scope is searched from the current working directory upward to the repository root. User scope is searched after repo scope. If the same agent name exists in multiple places, the first discovered agent wins.

For a global setup, clone this repository to ~/.agents/agent-brains, then symlink ~/.agents/agents to ~/.agents/agent-brains/agents.

The discovery roots can be overridden with AGENT_BRAINS_ROOT or the script's --root option. Overrides use custom scope.

Modes

List Agents

Use when the user asks what agents exist, asks for agent names, or is unsure which agent to load.

Run the bundled script:

uv run python skills/agent-loader/scripts/list_agents.py

Report each agent's name, description, scope, and path. Discovery only reads AGENTS.md frontmatter; it does not read the body or any other core file. If an agent has no description, say so directly.

List Workflows

Use when the user asks what workflows an agent has, or when loading an agent and a lightweight workflow summary is useful.

Run:

uv run python skills/agent-loader/scripts/list_agents.py --agent <name> --workflows

The script resolves <name> through the same repo/user discovery order, then reads only each workflow's WORKFLOW.md frontmatter. Report each workflow's name, description, and path. Do not read workflow bodies just to list workflows.

Load An Agent

Use when the user names an agent or asks to start working as an agent.

First resolve the agent path:

uv run python skills/agent-loader/scripts/list_agents.py --agent <name>

The script prints:

name<TAB>description<TAB>scope<TAB>path

For the resolved path, read in this order:

path/AGENTS.md
path/SOUL.md
path/MEMORY.md

Then acknowledge the active agent and summarize:

Read the full file on GitHub · 102 lines

Files

What ships with it

1 file 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.

scripts/list_agents.py 6.0 KB runs code

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.

2mo ago First seen · 102 lines · 50 tokens per session scan A f6f17156c0d5

Subscribe to this mod's changes

agent-loader is a skill published in the GitHub repository samzong/agent-brains (9 stars, last pushed 5mo ago), licensed MIT. It adds 50 tokens to every session and 906 once invoked, about $0.0002 per session on Opus 5.5. 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.

Building agents Claude Code agent-skills agents-md ai-agents codex coding-agents

agent-loader next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
agent-loadersamzong/agent-brains	Skill	9	5mo ago	MIT	A	50	Claude Code, Codex
steadyagent-workflowKhalilzhang0825/boring-is-all-you-need	Skill	168	3mo ago	MIT	A	64	Codex
ackit-workflowCynrath/agent-context-kit	Skill	14	29d ago	MIT	A	26	Claude Code, Codex
ackit-context-optimizationCynrath/agent-context-kit	Skill	14	29d ago	MIT	A	20	Claude Code, Codex
ackit-policy-authoringCynrath/agent-context-kit	Skill	14	29d ago	MIT	A	23	Claude Code, Codex
ackit-scan-and-fixCynrath/agent-context-kit	Skill	14	29d ago	MIT	A	26	Claude Code, Codex
agents-doctorItsHege/agents-md-doctor	Skill	2	1mo ago	MIT	A	93	Claude Code, Codex