A command-line helper for replacing an existing GitHub Gist’s file with a local file. A Gist is a small GitHub-hosted place for sharing code or text snippets.

Use it to find a Gist by filename or ID, upload a revised local file, update its README comment, and report the resulting Gist URL.

It avoids manually opening GitHub and copying updated content into a Gist, while also allowing its README comment to be kept current.

gist-update — Skill for Claude Code by ericboehs/claude-plugins

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 ericboehs/claude-plugins --skill gist-update

Clone the repo

git clone --depth 1 https://github.com/ericboehs/claude-plugins

Made for: Claude Code.

Or install gist, the plugin that ships this one along with the rest of its 2 skills.

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/ericboehs/claude-plugins/gist-update/github.svg)](https://agentmods.dev/skills/ericboehs/claude-plugins/gist-update)

Your own site

<a href="https://agentmods.dev/skills/ericboehs/claude-plugins/gist-update"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/gist-update/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/ericboehs/claude-plugins/gist-update"><img src="https://agentmods.dev/badge/skills/ericboehs/claude-plugins/gist-update.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 299 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	$0.00033	$0.00299
Opus 5.5	$0.00013	$0.00120
Sonnet 5.5	$0.00007	$0.00060
Haiku 4.5	$0.00003	$0.00030

Measured 2mo ago against content hash c72595a99a5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gist-update 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.

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.

plugins/gist/skills/gist-update/SKILL.md · 30 lines

What it actually says

Update an existing GitHub Gist

Update an existing GitHub Gist from a local file: $ARGUMENTS

Arguments can be:

Just a file path (will search for existing gist by filename)
A file path and gist ID/URL

Steps

If no gist ID provided, try to find an existing gist:
- gh gist list --limit 100 and search for the filename
- Or ask the user for the gist ID/URL
Update the gist file: gh gist edit <gist_id> <filepath>
Update the README comment if it exists:
- Get the comment ID: gh api /gists/<gist_id>/comments --jq '.[0].id'
- Update it: gh api -X PATCH /gists/<gist_id>/comments/<comment_id> -f body='<updated_readme>'
- If no comment exists, create one with the README
The README should reflect any new features or changes in the updated file
Report the gist URL when complete

Note: Use single quotes around the body and escape any single quotes in the content with '''

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 · 30 lines · 33 tokens per session scan A c72595a99a5b

Subscribe to this mod's changes

gist-update is a skill published in the GitHub repository ericboehs/claude-plugins (2 stars, last pushed 2mo ago), licensed MIT. It adds 33 tokens to every session and 299 once invoked, about $0.0001 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.

Git and workflow

gist-update next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
gist-updateericboehs/claude-plugins	Skill	2	2mo ago	MIT	A	33	Claude Code
merge-batchdiegosouzapw/OmniRoute	Skill	83k	6d ago	MIT	A	46	Claude Code
prowler-commitprowler-cloud/prowler	Skill	15k	today	Apache-2.0	A	44	Claude Code, Codex
gh-auth-isolationgithub/gh-aw	Skill	5.6k	today	MIT	A	20	Claude Code, Codex
comet-githubrpamis/comet	Skill	3.3k	yesterday	MIT	A	72	Claude Code, Codex
github-skillzeenie-ai/OpenCompany	Skill	1.1k	2d ago	MIT	A	51	Claude Code
release-helperSahir619/fable-method	Skill	2.3k	1mo ago	MIT	A	43	Claude Code