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.
/plugin marketplace add sgaunet/claude-pluginsnpx agentmods add plugins/sgaunet/claude-plugins/marketplacegit clone --depth 1 https://github.com/sgaunet/claude-pluginsGrade A, and why
sylvain-marketplace 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.
{
"name": "sylvain-marketplace",
"metadata": {
"version": "0.19.0",
"description": "Specialized Claude Code agents for DevOps infrastructure, software engineering workflows, and Go development. Includes proactive agents for IaC, CI/CD, database optimization, code review, debugging, documentation, and more."
},
"owner": {
"name": "Sylvain",
"email": "[email protected]"
},
"plugins": [
{
"name": "devops-infrastructure",
"source": "./plugins/devops-infrastructure",
"description": "Infrastructure as Code (Terraform, Ansible, CloudFormation), CI/CD pipelines (GitHub Actions, GitLab CI, Forgejo Actions via fgj), and database specialists (PostgreSQL, MySQL) for DevOps workflows.",
"version": "0.6.1",
"author": {
"name": "Sylvain"
}
},
{
"name": "software-engineering",
"source": "./plugins/software-engineering",
"description": "Code review, debugging, documentation, license compliance (AGPL/MIT/Apache), payment integration (Stripe/PayPal), frontend development (HTMX/Alpine.js), architecture diagrams (d2), and terminal demo GIFs (VHS). Skills: auto-mr, detect-repo-host, run-lint, run-tests. MCP: context7",
"version": "0.21.0",
"author": {
"name": "Sylvain"
}
},
{
"name": "go-specialist",
"source": "./plugins/go-specialist",
"description": "Master Go 1.25+ development with modern patterns, advanced concurrency, performance optimization, and production-ready microservices. Skills: go-blackbox, go-bulma, go-structure, go-tool. MCP: context7",
"version": "0.22.0",
"author": {
"name": "Sylvain"
}
},
{
"name": "bash-specialist",
"source": "./plugins/bash-specialist",
"description": "Production-quality bash scripting with shellcheck compliance, error handling, and beautiful terminal UX via Charmbracelet gum. Skills: gum-beautify. MCP: context7",
"versWhat 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.
- 2d ago First seen · 50 lines scan A a78ae382acb9
sylvain-marketplace is a plugin published in the GitHub repository sgaunet/claude-plugins (16 stars, last pushed 7d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.
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