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 systempromptio/systemprompt-marketplacenpx agentmods add plugins/systempromptio/systemprompt-marketplace/developmentgit clone --depth 1 https://github.com/systempromptio/systemprompt-marketplaceWrote 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/plugins/systempromptio/systemprompt-marketplace/development)<a href="https://agentmods.dev/plugins/systempromptio/systemprompt-marketplace/development"><img src="https://agentmods.dev/badge/plugins/systempromptio/systemprompt-marketplace/development.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
development 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 yesterday.
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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
1 file beside marketplace.json#development 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.
- yesterday First seen · 11 lines scan A 0c3bc8aa331a
development is a plugin published in the GitHub repository systempromptio/systemprompt-marketplace (2 stars, last pushed 7d ago), with no licence file. 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 2026-09-03.
Other plugins, from other repositories
dev-tooling
Three MCP servers for PHP and JavaScript operations plus an optional PHP language server. PHP (php-tooling): PHPStan, ECS, Rector, PHPUnit, PHPUnit coverage gap analysis, Symfony Console. Administration (js-admin-tooling): ESLint, Stylelint, Prettier, Jest, TypeScript, Vite builds. Storefront (js-storefront-tooling)…
test-writing
Generate and validate PHPUnit tests for Shopware 6. Unit tests: analyzes source classes to detect category (DTO, Service, Flow/Event, DAL, Exception) and applies category-specific templates. Migration tests: analyzes SQL operations to generate pattern-appropriate migration tests with 8 migration-specific rules.…
context-guard
Per-session context-window observability plus the first shipped consumer: a statusline wrapper tees each session's contextwindow fields to a per-session snapshot file, a zone resolver classifies usage into smart/acceptable/dumb bands (percentage bands plus window-class token bands, conservative-min combination, zones.
context-budget
Measure a Claude Code session's fixed startup context payload per item, on the consumer's machine at a pinned, version-stamped binary — including per-tool attribution of the built-in tool pools that /context reports only as lump sums, derived live by A/B bare-name-deny differencing with enforced comparability rules…
ai-briefing
Build source-backed AI-industry briefings from official vendor publications, configured RSS/Atom feeds, GitHub releases, reputable secondary reporting, and user-supplied URLs. Deduplicate, rank, and present results as markdown or optional HTML/PPTX decks, with repository-owned profile, audience, and brand…
claude-memory
Keeps a repo's Claude Code memory layer healthy and under your control, against criteria derived from official Claude Code documentation. The audit skill checks the instruction/memory layer (CLAUDE.md, CLAUDE.local.md, .claude/rules/, auto-memory) with a deterministic script-backed spine plus judgment-tier checks. The.