thurbox-agents

thurbox-agents is a skill for Claude Code, Codex from Thurbeen/thurbox. It costs 0 tokens per session (2,390 once invoked), scanned A, original, MIT.

A reference for defining and managing coding agents in Thurbox, including how agents start, resume, and share work across repositories.

In plain words
What is it for?
Use it to configure built-in or custom agents, choose session behavior, add status hooks, and support work spanning multiple repositories.
Why use it?
It removes guesswork when adding an agent or diagnosing why a session, status hook, or workspace is not behaving as expected.

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/thurbeen/thurbox/thurbox-agents
Any agent
npx skills add Thurbeen/thurbox --skill thurbox-agents
Clone the repo
git clone --depth 1 https://github.com/Thurbeen/thurbox

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 thurbox-agents

README.md
[![agentmods](https://agentmods.dev/badge/skills/thurbeen/thurbox/thurbox-agents.svg)](https://agentmods.dev/skills/thurbeen/thurbox/thurbox-agents)
Your own site
<a href="https://agentmods.dev/skills/thurbeen/thurbox/thurbox-agents"><img src="https://agentmods.dev/badge/skills/thurbeen/thurbox/thurbox-agents.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,390 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 $0.00000 $0.02390
Opus 5 $0.00000 $0.01195
Sonnet 5 $0.00000 $0.00478
Haiku 4.5 $0.00000 $0.00239

Measured today against content hash 8e77daa19239, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

thurbox-agents 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 today.

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/thurbox-agents/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.

Thurbox agent definitions

Working reference extracted from CLAUDE.md, which indexes it. The rationale behind these decisions is owned by the docs under docs/; a change that invalidates what this says updates it in the same PR.

Agent Definitions

Per-agent reference + the "adding a new built-in" checklist: docs/AGENTS.md (each built-in's exact config, ID model, and status-hook mechanism, plus every file to update when promoting a CLI to a built-in).

The set of launchable coding agents is declared as data in ~/.config/thurbox/agents.toml, seeded with built-ins (claude, codex, antigravity, opencode, aider, copilot, vibe, pi, omp) plus shell on first run.

shell is the one seeded entry that is not a coding agent: the platform's own interactive shell (bash -i, or powershell -NoLogo on native Windows, where the multiplexer is psmux). It exists so a session can be anything, and it is the ready-made form of session create --command. Because it declares no resume_args/fork_args, it also documents the rule by example: those groups are the conversation address, and an entry without them can be restarted but never resumed. A raw --command session behaves identically — thurbox builds it a synthetic AgentDef with empty arg groups and persists the recipe on the session row, since there is no agents.toml entry to re-resolve at restart. Each [[agents]] entry is an AgentDef:

default = "claude"

[[agents]]
name = "claude"
command = "claude"
args = []                               # always passed; bake a model here if you want one
resume_args = ["--resume", "{id}"]      # emitted when resuming
fork_args = ["--resume", "{id}", "--fork-session"]
new_session_args = ["--session-id", "{id}"]  # emitted on a fresh spawn

[[agents]]
name = "codex"
command = "codex"
resume_args = ["resume", "--last"]      # id-less: resumes the last session in cwd
fork_args = ["fork", "--last"]
resume_latest = true

Each *_args group is appended only when its driving value is present, with {id} substituted; args is always passed. No model is ever passed — each agent uses its own default config (put ["--model", "opus"] in args if you want to pin one). A second token, {home}, expands (at spawn, on the spawn worker — session_ops::expand_home_in_def, called from spawn::adapt_def_for_launch, which both a fresh launch and session_ops::restart go through) to the resolved home dir — the remote home for an SSH/WSL host — so an agent that wants a session file path rather than a bare id (the built-in omp, below) launches against a concrete, quote-safe absolute path (a literal ~ would never expand — args are POSIX-quoted). Agents that omit resume_args simply start fresh on restart (the live tmux process is what carries state across TUI restarts). Add your own [[agents]] entry to support any CLI — no recompile.

Read the full file on GitHub · 156 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. today Changed · +11 lines 8e77daa19239
  2. 4d ago First seen · 145 lines · 0 tokens per session scan A 04e3cecce6c3

Subscribe to this mod's changes

thurbox-agents is a skill published in the GitHub repository Thurbeen/thurbox (60 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,390 tokens. 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 2026-08-30.

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