gum-write

gum-write is a command for Claude Code from ehmo/gum. It costs 0 tokens per session (326 once invoked), scanned A, original, MIT.

A command for invoking a write operation through gum. It requires an explicit permission flag before the operation can change data.

In plain words
What is it for?
Use it to run a gum catalog operation with JSON arguments and selected output, logging, and profile settings.
Why use it?
It adds a visible policy check before an agent or script performs a write. This helps distinguish actions that only read information from actions that modify it.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md).

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 commands/ehmo/gum/gum-write
Clone the repo
git clone --depth 1 https://github.com/ehmo/gum

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 gum-write

README.md
[![agentmods](https://agentmods.dev/badge/commands/ehmo/gum/gum-write.svg)](https://agentmods.dev/commands/ehmo/gum/gum-write)
Your own site
<a href="https://agentmods.dev/commands/ehmo/gum/gum-write"><img src="https://agentmods.dev/badge/commands/ehmo/gum/gum-write.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 326 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 5.1 $0.00000 $0.00326
Opus 5 $0.00000 $0.00163
Sonnet 5 $0.00000 $0.00065
Haiku 4.5 $0.00000 $0.00033

Measured 2d ago against content hash 5cedb6573e58, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

gum-write 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 2d 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.

docs/commands/gum-write.md · 39 lines

What it actually says

gum write

Generated from gum schema --json. Do not edit this page by hand; run make docs-commands.

Invoke a write-class catalog op. --allow-write is required for the policy gate to admit the dispatch.

Usage

gum write <op_id> [flags]

Parent

Arguments

Name Help
op_id

Flags

Flag Type Default Help
--allow-write bool false Authorise this write
--args string JSON object of op arguments
--format string Output format (toon|json|raw)
-o--output string Human output format: table|json|toon|csv|markdown|raw|value() (default: kernel TOON)
--log-format string json Log format: json|text
--log-level string info Log level: debug|info|warn|error (overrides GUM_LOG_LEVEL)
--profile string default Profile name to read/write config under

See also

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. 2d ago First seen · 39 lines · 0 tokens per session scan A 5cedb6573e58

Subscribe to this mod's changes

gum-write is a command published in the GitHub repository ehmo/gum (32 stars, last pushed 28d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 326 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 2026-09-03.