spider

spider is a skill for Claude Code, Codex from johnlindquist/claude. It costs 25 tokens per session (1,515 once invoked), scanned B, original, no licence file.

A web-crawling and scraping aid for visiting websites and extracting information from their pages. Web crawling means following pages or links; scraping means collecting specific data from them.

In plain words
What is it for?
It is for crawling websites, extracting page information, analyzing results, and performing security scans.
Why use it?
It helps gather information from websites without inspecting each page manually and can also support security checks.

Skill for Claude CodeCodex

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 skills/johnlindquist/claude/spider
Any agent
npx skills add johnlindquist/claude --skill spider
Clone the repo
git clone --depth 1 https://github.com/johnlindquist/claude

Made for: Claude Code, Codex.

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 spider

README.md
[![agentmods](https://agentmods.dev/badge/skills/johnlindquist/claude/spider.svg)](https://agentmods.dev/skills/johnlindquist/claude/spider)
Your own site
<a href="https://agentmods.dev/skills/johnlindquist/claude/spider"><img src="https://agentmods.dev/badge/skills/johnlindquist/claude/spider.svg" alt="Measured on agentmods" 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 1,515 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
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 $0.00025 $0.01515
Opus 5 $0.00013 $0.00758
Sonnet 5 $0.00005 $0.00303
Haiku 4.5 $0.00003 $0.00152

Measured 4d ago against content hash f2baea4f155c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

spider scanned grade B with 2 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 4d 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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -s "https://example.com" | python3 -c "

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

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

# curl for fetching
skills/spider/SKILL.md · 260 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 4d ago First seen · 260 lines · 25 tokens per session scan B f2baea4f155c

Subscribe to this mod's changes

spider is a skill published in the GitHub repository johnlindquist/claude (25 stars, last pushed 8mo ago), with no licence file. It adds 25 tokens to every session and 1,515 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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