sd

sd is a skill for Claude Code from moabualruz/fulcrum. It costs 54 tokens per session (202 once invoked), scanned A, a copy of bat, MIT.

A command-line tool for replacing text in files or standard input, including exact strings and regular expressions. A regular expression is a pattern used to match text.

In plain words
What is it for?
Use it to replace text in one file or many files, rename a symbol across a project, preview changes, edit files in place, or process input through fd and xargs.
Why use it?
It makes broad text changes easier without dealing with the escaping rules that often make sed commands difficult to write correctly.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the fulcrum plugin — 32 skills shipped together

Good fit Use it to replace text in one file or many files, rename a symbol across a project, preview changes, edit files in place, or process input through fd and xargs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/moabualruz/fulcrum/sd
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 moabualruz/fulcrum --skill sd
Clone the repo
git clone --depth 1 https://github.com/moabualruz/fulcrum

Made for: Claude Code.

Or install fulcrum, the plugin that ships this one along with the rest of its 32 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.

agentmods badge for sd

README.md
[![agentmods](https://agentmods.dev/badge/skills/moabualruz/fulcrum/sd.svg)](https://agentmods.dev/skills/moabualruz/fulcrum/sd)
Your own site
<a href="https://agentmods.dev/skills/moabualruz/fulcrum/sd"><img src="https://agentmods.dev/badge/skills/moabualruz/fulcrum/sd.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 202 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 80% copy Near-identical to another mod 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 $0.00054 $0.00202
Opus 5 $0.00027 $0.00101
Sonnet 5 $0.00011 $0.00040
Haiku 4.5 $0.00005 $0.00020

Measured 8d ago against content hash c8482146b146, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

sd 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 8d 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.

Origin

This is a copy

80% identical to bat — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/fulcrum/skills/sd/SKILL.md · 28 lines

What it actually says

sd

When to use

See references/when-to-use.md. Load only when this section is needed.

Invocation

See references/invocation.md. Load only when this section is needed.

Patterns

See references/patterns.md. Load only when this section is needed.

Anti-patterns

See references/anti-patterns.md. Load only when this section is needed.

Cross-refs

See references/cross-refs.md. Load only when this section is needed.

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 28 lines · 54 tokens per session scan A c8482146b146

Subscribe to this mod's changes

sd is a skill published in the GitHub repository moabualruz/fulcrum (3 stars, last pushed 2mo ago), licensed MIT. It adds 54 tokens to every session and 202 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 80% identical to bat, differing in 6 lines, and is treated as a copy.

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