jumbo-command-discovery

A way for an agent to learn Jumbo command syntax by asking the command-line tool for its current help text.

In plain words
What is it for?
Use it when the agent needs to find the right Jumbo command or its syntax.
Why use it?
It avoids relying on a possibly outdated list of commands after the session has been routed.

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/jumbocontext/cli/jumbo-command-discovery
Any agent
npx skills add jumbocontext/cli --skill jumbo-command-discovery
Clone the repo
git clone --depth 1 https://github.com/jumbocontext/cli

Made for: Claude Code, Codex.

Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 73 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00033 $0.00073
Opus 5 $0.00016 $0.00036
Sonnet 5 $0.00007 $0.00015
Haiku 4.5 $0.00003 $0.00007

Measured yesterday against content hash 102b6ed0eca0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

jumbo-command-discovery 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 yesterday.

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.

assets/skills/jumbo-command-discovery/SKILL.md · 12 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. yesterday First seen · 12 lines · 33 tokens per session scan A 102b6ed0eca0

Subscribe to this mod's changes

jumbo-command-discovery is a skill published in the GitHub repository jumbocontext/cli (268 stars, last pushed 6d ago), licensed AGPL-3.0. It adds 33 tokens to every session and 73 once invoked, about $0.0002 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 2026-08-30.

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