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unstract: Skill for Claude Code

.claude/skills/csp-check/SKILL.md

csp-check is a skill for Claude Code from Zipstack/unstract. It costs 96 tokens per session (2,332 once invoked), scanned A, original, AGPL-3.0.

A check for a frontend Content Security Policy, a browser rule that lists which outside websites an app may load resources from. It compares the rule in the web server configuration with the hosts the app actually uses.

In plain words
What is it for?
Use it after adding or upgrading a frontend dependency that loads files or services from a new external host.
Why use it?
It catches cases where a new CDN, analytics tool, payment service, or widget is blocked because its host is missing from the policy.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is Zipstack/unstract's own configuration. It tells Claude Code how to work on unstract itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything unstract configures →

not rated 7.4krepo +56 yesterday A scan 96 tokens AGPL-3.0
View source ↗ Zipstack/unstract unstract.com
About the project

Unstract turns information in documents such as PDFs, images, and scans into structured JSON by using natural-language extraction prompts. It is for teams that need document data in databases or automated pipelines, and its catalogue add-ons connect the platform to coding agents and workflow tools.

Zipstack/unstract · 7,421 stars · on GitHub · unstract.com

Reuse

Borrowing it

Nothing to install: this file belongs to Zipstack/unstract. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Zipstack/unstract/main/.claude/skills/csp-check/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Zipstack/unstract

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 csp-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/zipstack/unstract/csp-check/github.svg)](https://agentmods.dev/skills/zipstack/unstract/csp-check)
Your own site
<a href="https://agentmods.dev/skills/zipstack/unstract/csp-check"><img src="https://agentmods.dev/badge/skills/zipstack/unstract/csp-check/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 csp-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/zipstack/unstract/csp-check"><img src="https://agentmods.dev/badge/skills/zipstack/unstract/csp-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,332 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 $0.00096 $0.02332
Opus 5.5 $0.00038 $0.00933
Sonnet 5.5 $0.00019 $0.00466
Haiku 4.5 $0.00010 $0.00233

Measured 1mo ago against content hash 83e4e6bf0b0b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

csp-check 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 1mo ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/extract_policy.py, scripts/probe.js, scripts/scan_origins.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

curl -sI http://localhost:8899/ | grep -i content-security-policy
.claude/skills/csp-check/SKILL.md · 183 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

3 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. 1mo ago First seen · 183 lines · 96 tokens per session scan A 83e4e6bf0b0b

Subscribe to this mod's changes

csp-check is a skill published in the GitHub repository Zipstack/unstract (7,421 stars, last pushed yesterday), licensed AGPL-3.0. It adds 96 tokens to every session and 2,332 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-09-30.

FrontendSecurityai-agentsdata-engineeringdocument-aigenerative-aiidpjson-extraction
Related

csp-check compared with skills from other repositories

csp-check next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
csp-checkZipstack/unstractSkill7.4kyesterdayAGPL-3.0A96Claude Code
repomixyamadashy/repomixSkill29kyesterdayMITA58Claude Code, Codex
agent-carnetyamadashy/repomixSkill29kyesterdayMITA67Claude Code, Codex
google-agents-cli-scaffoldgoogle/agents-cliSkill6.3k2d agoApache-2.0A135Claude Code
ti-ioc-extractionPurpleAILAB/DecepticonSkill6.5k8d agoApache-2.0A75Claude Code
opsecPurpleAILAB/DecepticonSkill6.5k8d agoApache-2.0A30Claude Code
signature-replayPurpleAILAB/DecepticonSkill6.5k8d agoApache-2.0A31Claude Code, Codex