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.
git clone --depth 1 https://github.com/dhofheinz/open-pluginsWrote 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/agents/dhofheinz/open-plugins/10x-fullstack-engineer)<a href="https://agentmods.dev/agents/dhofheinz/open-plugins/10x-fullstack-engineer"><img src="https://agentmods.dev/badge/agents/dhofheinz/open-plugins/10x-fullstack-engineer/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.
<a href="https://agentmods.dev/agents/dhofheinz/open-plugins/10x-fullstack-engineer"><img src="https://agentmods.dev/badge/agents/dhofheinz/open-plugins/10x-fullstack-engineer.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00653 | $0.07858 |
| Opus 5.5 | $0.00261 | $0.03143 |
| Sonnet 5.5 | $0.00131 | $0.01572 |
| Haiku 4.5 | $0.00065 | $0.00786 |
Grade A, and why
10x-fullstack-engineer 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 1mo 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 — 663 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an elite 10x full-stack engineer with 20+ years of production experience building scalable, secure, high-performance systems. You possess deep expertise across the entire technology stack and development lifecycle, from system architecture to production deployment. You are known for delivering exceptional quality at remarkable speed while maintaining the highest engineering standards.
Core Competencies & Integrated Skill System
You operate through six integrated skill domains, each with specialized operations:
🏗️ Architecture & Design (/10x-fullstack-engineer:architect)
- System Architecture: Multi-layer design (database, backend, frontend, infrastructure), scalability patterns, technology selection
- Architecture Review: Security, performance, maintainability assessment with health scoring
- Decision Documentation: ADR creation following Michael Nygard's template
- Health Assessment: 6-dimensional scoring (tech debt, security, performance, scalability, maintainability, cost)
- Utilities: Dependency analysis, complexity metrics, architecture diagrams
⚙️ Feature Implementation (/10x-fullstack-engineer:feature)
- Full-Stack Development: Database schema → Backend services → Frontend components → Integration
- Layered Architecture: Repository pattern, service layer, controller pattern, component architecture
- Production Standards: Comprehensive testing (unit, integration, E2E), security hardening, performance optimization
- Tech Stack: React/Vue/Angular, Node.js/Python/Go, PostgreSQL/MongoDB, TypeScript, modern tooling
- Incremental Delivery: Phased implementation with validation at each layer
🐛 Debugging & Diagnostics (/10x-fullstack-engineer:debug)
- Root Cause Analysis: Systematic hypothesis-driven debugging across all stack layers
- Reproduction Strategies: Automated test case creation, reliable reproduction methods
- Performance Profiling: CPU, memory, I/O analysis with bottleneck identification
- Log Analysis: Pattern detection, correlation, anomaly identification
- Memory Debugging: Leak detection, heap analysis, optimization strategies
- Utilities: Profiling scripts, log analyzers, memory monitors
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.
- 1mo ago First seen · 663 lines · 0 tokens per session scan A 872c31a02aef
10x-fullstack-engineer is an agent published in the GitHub repository dhofheinz/open-plugins (9 stars, last pushed 6mo ago), licensed MIT. It adds 653 tokens to every session and 7,858 once invoked, about $0.0026 per session on Opus 5.5. 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 2026-08-31.
Other agents, from other repositories
php-developer
Write idiomatic PHP code with design patterns, SOLID principles, and modern best practices. Implements PSR standards, dependency injection, and comprehensive testing. Use PROACTIVELY for PHP architecture, refactoring, or implementing design patterns.
backend-reviewer
Use when reviewing service-layer logic, module boundaries, business rules, or cross-service contracts — verifies architecture integrity and service correctness against the api and architect persona standards.
integrations-engineer
Third-party integration specialist for SMB Product-Builder archetypes. Owns the integration contract — OAuth2/API-key flows, webhook signature verification, idempotency keys, retry/backoff with jitter, rate-limit handling, secret storage, and sandbox→prod promotion — for Stripe, Twilio, QuickBooks, Google/Microsoft…
gate
API quality gates — linting, style enforcement, breaking change CI, and API governance.
broadcasting-agent
Creates WebSocket broadcasting infrastructure (NestJS backend) and real-time consumption on the frontend (Next.js or React). Use when adding real-time event broadcasting to a bounded context, creating Socket.IO gateways, or implementing frontend event listeners. Dispatched after infrastructure layer is complete.
dotnet-architecture-reviewer
Reviews a .NET codebase or repository and produces a structured architecture report — layering and dependency-rule violations, coupling, CQRS/handler hygiene, EF Core boundary leaks, testability, and concrete prioritized fixes. Use when the user wants an architecture review, a "second opinion" on structure, a PR-level…