open

open is a command for coding agents from anthropics/knowledge-work-plugins. It costs 7 tokens per session (297 once invoked), scanned A, original, Apache-2.0.

Open a PDF in the interactive viewer.

Command

About the project

Knowledge Work Plugins is an open-source collection of Claude extensions organized around roles such as productivity, sales, and customer support. Each plugin combines role-specific guidance, connectors, commands, and sub-agents so knowledge workers can use Claude with their team’s tools and processes. The catalogue entries are examples of, or workflows from, this plugin collection.

anthropics/knowledge-work-plugins · 23,877 stars · on GitHub

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 commands/anthropics/knowledge-work-plugins/open
Clone the repo
git clone --depth 1 https://github.com/anthropics/knowledge-work-plugins

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 open

README.md
[![agentmods](https://agentmods.dev/badge/commands/anthropics/knowledge-work-plugins/open.svg)](https://agentmods.dev/commands/anthropics/knowledge-work-plugins/open)
Your own site
<a href="https://agentmods.dev/commands/anthropics/knowledge-work-plugins/open"><img src="https://agentmods.dev/badge/commands/anthropics/knowledge-work-plugins/open.svg" alt="Measured on agentmods" height="20"></a>
Per session 7 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 297 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00007 $0.00297
Opus 5 $0.00003 $0.00148
Sonnet 5 $0.00001 $0.00059
Haiku 4.5 $0.00001 $0.00030

Measured today against content hash 5005533944a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

open 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 today.

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.

pdf-viewer/commands/open.md · 35 lines

What it actually says

If you need to check which tools are connected, see CONNECTORS.md.

Open PDF

Display a PDF document in the live viewer. Use this when the user wants to see a document — not just extract its text.

Instructions

  1. If the user provides a URL or file path, call display_pdf with it
  2. If no path given, call list_pdfs first to show available documents
  3. After displaying, offer next steps based on the document type:
    • Contract / report → "Want me to highlight key sections or add review notes?"
    • Form → "This has fillable fields — shall I help you fill it?"
    • Academic paper → "Shall I walk through and annotate the key findings?"

Supported Sources

  • Local files (paths or drag-and-drop into your working directory)
  • arXiv (arxiv.org/abs/... auto-converts to PDF URL)
  • Any direct HTTPS PDF URL (use the PDF link, not a landing page)

When NOT to use this

If the user just wants a summary or text extraction, do not open the viewer — use Claude's native Read tool on the PDF path instead. The viewer is for interactive, visual workflows.

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. today First seen · 35 lines · 7 tokens per session scan A 5005533944a6

Subscribe to this mod's changes

open is a command published in the GitHub repository anthropics/knowledge-work-plugins (23,877 stars, last pushed today), licensed Apache-2.0. It adds 7 tokens to every session and 297 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.