gum-plugin

A command group for managing gum plugins, which are third-party programs that gum can start and call. It supports installing, listing, running, setting up, reloading, removing, and quarantining plugins.

In plain words
What is it for?
Use it to install or remove plugins, inspect installed plugins and their quarantine state, run plugin tools, configure credentials, or restore a quarantined plugin.
Why use it?
It keeps plugin operations in one place and makes the security risk of starting untrusted third-party programs explicit.

Command

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-plugin
Clone the repo
git clone --depth 1 https://github.com/ehmo/gum
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 475 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 $0.00475
Opus 5 $0.00000 $0.00237
Sonnet 5 $0.00000 $0.00095
Haiku 4.5 $0.00000 $0.00047

Measured 2d ago against content hash fbc5b0673189, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gum-plugin 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-plugin.md · 42 lines

What it actually says

gum plugin

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

Manage gum plugins: install, list, run, and curate third-party subprocess plugins. Installing a plugin launches an untrusted subprocess, so 'install' requires --yes to acknowledge that trust boundary. See the subcommands below.

Usage

gum plugin

Parent

Subcommands

  • gum plugin install - Installs a plugin through an atomic registry update: validates the manifest,
  • gum plugin list - List installed plugins with their quarantine state
  • gum plugin reload - Clears any quarantine state for the named plugin, then spawns the subprocess once via the supervisor to act as a passive canary. A spawn failure re-quarantines the plugin.
  • gum plugin remove - Remove a plugin by ID
  • gum plugin run - Call a tool on a running plugin
  • gum plugin setup - Reads the plugin's credential_descriptors from its manifest, prompts for
  • gum plugin transfer-namespace - Updates the namespace_owner binding for in the active profile's
  • gum plugin unquarantine - Resets quarantined, retry_count, backoff_step, and next_retry_at in plugin-state.json so the plugin can be invoked on the next call. Use when the operator has independently verified the plugin is healthy and wants to bypass the exponential-backoff window.

Flags

Flag Type Default Help
--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 · 42 lines · 0 tokens per session scan A fbc5b0673189

Subscribe to this mod's changes

gum-plugin is a command published in the GitHub repository ehmo/gum (32 stars, last pushed 25d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 475 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.