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.
npx agentmods add skills/hraness/direct/save-url-kbnpx skills add hraness/direct --skill save-url-kbgit clone --depth 1 https://github.com/hraness/directWrote 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.
[](https://agentmods.dev/skills/hraness/direct/save-url-kb)<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>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00111 | $0.02133 |
| Opus 5 | $0.00056 | $0.01066 |
| Sonnet 5 | $0.00022 | $0.00427 |
| Haiku 4.5 | $0.00011 | $0.00213 |
Grade A, and why
save-url-kb scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to save-url-kb — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Capture web content
Use the installed kb CLI. Check the available local routes when the capture may need a browser or optional media tools:
kb doctor
kb adapters
Resolve <vault> to the directory containing its authored or managed
index.md front door, then set
the shell-local KB_ROOT to that path (KB_ROOT=kb from a typical repository
root, or KB_ROOT=. from inside the vault). Pass --output "$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:
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.
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.
- 3d ago First seen · 171 lines · 111 tokens per session scan A 496e2d1bb577
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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