progen

progen is a skill for Claude Code, Codex from sivaprasadreddy/sivalabs-agent-skills. It costs 103 tokens per session (2,339 once invoked), scanned B, original, MIT.

A guide for using progen, an offline command-line tool that creates Spring Boot projects from a description. Spring Boot is a Java framework for building web applications and APIs; the generated project can include code, tests, databases, security, containers, and automation.

In plain words
What is it for?
Use it to scaffold Spring Boot REST APIs, web apps, or Spring Boot and Angular projects with Maven or Gradle, including requested tests, database setup, security, Docker Compose, and CI workflows.
Why use it?
Starting a Spring Boot project by hand requires many repetitive setup decisions. This guide turns a plain-language app idea into progen settings, asks for missing details, runs the generator, and adds unsupported requirements afterward.

Skill for Claude CodeCodex

Written for Claude Code and Codex: disable-model-invocation in frontmatter, but also agents/openai.yaml present.

Part of the java-dev plugin — 7 skills, 1 agent shipped together

Good fit Use it to scaffold Spring Boot REST APIs, web apps, or Spring Boot and Angular projects with Maven or Gradle, including requested tests, database setup, security, Docker Compose, and CI workflows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sivaprasadreddy/sivalabs-agent-skills/progen
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.

Any agent
npx skills add sivaprasadreddy/sivalabs-agent-skills --skill progen
Clone the repo
git clone --depth 1 https://github.com/sivaprasadreddy/sivalabs-agent-skills

Made for: Claude Code, Codex.

Or install java-dev, the plugin that ships this one along with the rest of its 7 skills, 1 agent.

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 progen

README.md
[![agentmods](https://agentmods.dev/badge/skills/sivaprasadreddy/sivalabs-agent-skills/progen/github.svg)](https://agentmods.dev/skills/sivaprasadreddy/sivalabs-agent-skills/progen)
Your own site
<a href="https://agentmods.dev/skills/sivaprasadreddy/sivalabs-agent-skills/progen"><img src="https://agentmods.dev/badge/skills/sivaprasadreddy/sivalabs-agent-skills/progen/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for progen

Your own site · 80×15
<a href="https://agentmods.dev/skills/sivaprasadreddy/sivalabs-agent-skills/progen"><img src="https://agentmods.dev/badge/skills/sivaprasadreddy/sivalabs-agent-skills/progen.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,339 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 7 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 30
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Privilege Escalation · line 34
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Prompt Injection · line 67
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 70
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 71
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 72
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 73
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
Origin original 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 5.1 $0.00103 $0.02339
Opus 5 $0.00051 $0.01170
Sonnet 5 $0.00021 $0.00468
Haiku 4.5 $0.00010 $0.00234

Measured 12d ago against content hash a7a0cabf9245, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade B, and why

progen 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 12d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo mv progen /usr/local/bin/ # or anywhere on PATH

Makes network callslowCapability

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

curl -L -o progen.tar.gz \
skills/progen/SKILL.md · 152 lines

How it starts

The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.

progen: Spring Boot Project Generator

progen is an offline, single-binary Go CLI (https://github.com/sivaprasadreddy/progen) that scaffolds a complete, production-ready Spring Boot project: build files, Java source, tests, Docker Compose, GitHub Actions, DB migrations, security, and more.

This skill's job: turn a user's description of the app they want into a .progen.json config, fill gaps by asking the user, run progen to generate the project, and — if the user asked for anything progen can't do natively — layer that on afterward by editing the generated code.

Step 1 — Ensure progen is available

Check for a working binary:

progen --version

If not found (or version looks outdated and the user wants latest), download the right asset for the current OS/arch from the latest release:

# Example for macOS arm64 — adapt OS/ARCH from `uname -s` / `uname -m`
curl -L -o progen.tar.gz \
  "https://github.com/sivaprasadreddy/progen/releases/latest/download/progen_<os>_<arch>.tar.gz"
tar -xzf progen.tar.gz
chmod +x progen
sudo mv progen /usr/local/bin/   # or anywhere on PATH
progen --version

If the exact asset naming isn't obvious, fetch the releases page (https://github.com/sivaprasadreddy/progen/releases) to find the correct filename for the user's OS/architecture before downloading. If a Go toolchain is available, go install github.com/sivaprasadreddy/progen@latest also works and avoids the asset-naming problem entirely.

On macOS, downloaded binaries may trigger a Gatekeeper "cannot be opened because the developer cannot be verified" error — tell the user to right-click → Open once in Finder to approve it (or xattr -d com.apple.quarantine progen if working non-interactively is fine with them).

Step 2 — Config schema (.progen.json)

progen takes no scaffolding info via flags — everything goes through a JSON config file consumed as progen -c <file> (interactive prompts are the only other input path, and are not used by this skill). Field names below are exactly as marshaled to JSON (Go field names, capitalized).

Read the full file on GitHub · 152 lines

Files

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.

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. 12d ago First seen · 152 lines · 103 tokens per session scan B a7a0cabf9245

Subscribe to this mod's changes

progen is a skill published in the GitHub repository sivaprasadreddy/sivalabs-agent-skills (181 stars, last pushed 8d ago), licensed MIT. It adds 103 tokens to every session and 2,339 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, 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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