save-url-kb

save-url-kb is a skill for Claude Code, Codex from hraness/direct. It costs 111 tokens per session (2,133 once invoked), scanned A, a copy of save-url-kb, MIT.

A tool that saves public or signed-in web pages and discussions as local Markdown knowledge-base bundles with their source assets.

In plain words
What is it for?
Use it to capture articles, social posts, GitHub or Discourse discussions, feeds, inboxes, private documents, WhatsApp conversations, and YouTube pages.
Why use it?
It preserves web research in an auditable local form, including content that may require a browser session to access.

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/hraness/direct/save-url-kb
Any agent
npx skills add hraness/direct --skill save-url-kb
Clone the repo
git clone --depth 1 https://github.com/hraness/direct

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 save-url-kb

README.md
[![agentmods](https://agentmods.dev/badge/skills/hraness/direct/save-url-kb.svg)](https://agentmods.dev/skills/hraness/direct/save-url-kb)
Your own site
<a href="https://agentmods.dev/skills/hraness/direct/save-url-kb"><img src="https://agentmods.dev/badge/skills/hraness/direct/save-url-kb.svg" alt="Measured on agentmods" height="20"></a>
Per session 111 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,133 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% 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 $0.00111 $0.02133
Opus 5 $0.00056 $0.01066
Sonnet 5 $0.00022 $0.00427
Haiku 4.5 $0.00011 $0.00213

Measured 3d ago against content hash 496e2d1bb577, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

save-url-kb 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 3d 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

100% identical to save-url-kb — 0 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.

.agents/skills/save-url-kb/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Capture web content

Use the installed kb CLI. Check the available local routes when the capture may need a browser or optional media tools:

kb doctor
kb adapters

Resolve <vault> to the directory containing its authored or managed index.md front door, then set the shell-local KB_ROOT to that path (KB_ROOT=kb from a typical repository root, or KB_ROOT=. from inside the vault). Pass --output "$KB_ROOT/articles" to captures and read the vault's applicable agent instructions before writing.

Pick the read surface

Start ordinary URL capture with the layered default:

kb clip https://example.com/article --output "$KB_ROOT/articles"

The command tries stable structured data, bounded HTTP extraction, and rendered-browser fallback as needed. If those routes produce no usable source material, URL capture may perform one read-only lookup for an existing Archive.today-family snapshot. It never submits the source for archival. A useful structured provider result, including a partial Hacker News result, remains authoritative over the archive fallback.

When the source is already open in a signed-in browser, read the current tab in place:

kb clip current --browser-live --output "$KB_ROOT/articles"
kb clip current --cdp 9222 --output "$KB_ROOT/articles"

For --browser-live, first enable Chrome's local debugging connection at chrome://inspect/#remote-debugging (Chrome 144+). If Chrome was launched with an explicit loopback debugging port, pass that numeric port to --cdp instead.

Current-tab capture derives the source URL from the attached tab. It does not navigate, click, type, submit, upload, or scroll that tab.

To open a URL with existing browser state, select a profile. A path-backed profile is copied into a temporary snapshot for the capture, so the source profile remains unchanged:

kb clip https://example.com/member/article --browser-profile "$KB_CAPTURE_PROFILE" --output "$KB_ROOT/articles"

Use cookie-backed HTTP when the page does not require browser-only local state, or import a page already saved from any browser:

Read the full file on GitHub · 171 lines

Files

What ships with it

4 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. 3d ago First seen · 171 lines · 111 tokens per session scan A 496e2d1bb577

Subscribe to this mod's changes

save-url-kb is a skill published in the GitHub repository hraness/direct (2 stars, last pushed 4d ago), licensed MIT. It adds 111 tokens to every session and 2,133 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to save-url-kb, differing in 0 lines, and is treated as a copy.

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