OpenSpace is a skill-management layer for AI agents that stores, retrieves, evaluates, shares, and improves reusable workflows. It is intended for people using multiple coding agents who want skills to be reused and refined based on task outcomes. The catalogue provides 200 skills for use with OpenSpace and the agents it supports.
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 skills add HKUDS/OpenSpace --skill pdf-verification-cli-enhancedgit clone --depth 1 https://github.com/HKUDS/OpenSpaceWrote 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/hkuds/openspace/pdf-verification-cli-enhanced)<a href="https://agentmods.dev/skills/hkuds/openspace/pdf-verification-cli-enhanced"><img src="https://agentmods.dev/badge/skills/hkuds/openspace/pdf-verification-cli-enhanced.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 5.1 | $0.00026 | $0.03772 |
| Opus 5 | $0.00013 | $0.01886 |
| Sonnet 5 | $0.00005 | $0.00754 |
| Haiku 4.5 | $0.00003 | $0.00377 |
Grade A, and why
pdf-report-workflow-cli 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 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
result = subprocess.run( How it starts
The opening of the file, as written. The whole thing — 495 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PDF Report Generation with Command-Line Tools
When working with PDFs in minimal/containerized environments where Python libraries may be unavailable, this skill provides a complete end-to-end workflow: verify source PDFs, extract content, assemble structured reports, and generate final PDF output.
When to Use This Skill
- Need to create new PDF reports from existing PDF sources
- Need to verify, extract, and combine PDF content
- Working in environments without Python PDF libraries
- Building document assembly pipelines in CI/CD or containers
Complete Workflow Overview
[Source PDFs] → [Verify] → [Extract] → [Assemble] → [Generate Output PDF]
Phase 1: Tool Availability Check
# Core extraction tools (from poppler-utils)
which pdfinfo && echo "✓ pdfinfo available" || echo "✗ pdfinfo missing"
which pdftotext && echo "✓ pdftotext available" || echo "✗ pdftotext missing"
# PDF generation tools (choose based on availability)
which pdftk && echo "✓ pdftk available (PDF merging)" || true
which wkhtmltopdf && echo "✓ wkhtmltopdf available (HTML→PDF)" || true
which pandoc && echo "✓ pandoc available (document conversion)" || true
which enscript && echo "✓ enscript available (text→PS)" || true
which ps2pdf && echo "✓ ps2pdf available (PS→PDF)" || true
Install Required Tools
# Debian/Ubuntu - Core tools
apt-get update && apt-get install -y poppler-utils
# Optional: PDF generation tools (choose based on needs)
apt-get install -y pdftk # PDF merging/manipulation
apt-get install -y wkhtmltopdf # HTML to PDF
apt-get install -y pandoc # Document conversion
apt-get install -y enscript ghostscript # Text to PDF pipeline
# RHEL/CentOS/Fedora
yum install -y poppler-utils pdftk ghostscript
# or
dnf install -y poppler-utils pdftk ghostscript
# macOS (with Homebrew)
brew install poppler pdftk ghostscript
brew install --cask wkhtmltopdf # GUI app, includes CLI
Phase 2: Verify Source PDFs
Check Page Count and Metadata
What ships with it
1 file 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 · 495 lines · 0 tokens per session scan A 316fcf8d8da6
pdf-report-workflow-cli is a skill published in the GitHub repository HKUDS/OpenSpace (7,534 stars, last pushed 25d ago), licensed MIT. It adds 26 tokens to every session and 3,772 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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