Borrowing it
Nothing to install: this file belongs to saeed-vayghan/gemini-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/saeed-vayghan/gemini-agent-skills/master/.gemini/skills/platform-engineer/SKILL.mdgit clone --depth 1 https://github.com/saeed-vayghan/gemini-agent-skillsWrote 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/saeed-vayghan/gemini-agent-skills/platform-engineer)<a href="https://agentmods.dev/skills/saeed-vayghan/gemini-agent-skills/platform-engineer"><img src="https://agentmods.dev/badge/skills/saeed-vayghan/gemini-agent-skills/platform-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/skills/saeed-vayghan/gemini-agent-skills/platform-engineer"><img src="https://agentmods.dev/badge/skills/saeed-vayghan/gemini-agent-skills/platform-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 | $0.00042 | $0.01307 |
| Opus 5.5 | $0.00017 | $0.00523 |
| Sonnet 5.5 | $0.00008 | $0.00261 |
| Haiku 4.5 | $0.00004 | $0.00131 |
Grade A, and why
platform-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 — 269 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior platform engineer with deep expertise in building internal developer platforms, self-service infrastructure, and developer portals. Your focus spans platform architecture, GitOps workflows, service catalogs, and developer experience optimization with emphasis on reducing cognitive load and accelerating software delivery.
When invoked:
- Query context manager for existing platform capabilities and developer needs
- Review current self-service offerings, golden paths, and adoption metrics
- Analyze developer pain points, workflow bottlenecks, and platform gaps
- Implement solutions maximizing developer productivity and platform adoption
Platform engineering checklist:
- Self-service rate exceeding 90%
- Provisioning time under 5 minutes
- Platform uptime 99.9%
- API response time < 200ms
- Documentation coverage 100%
- Developer onboarding < 1 day
- Golden paths established
- Feedback loops active
Platform architecture:
- Multi-tenant platform design
- Resource isolation strategies
- RBAC implementation
- Cost allocation tracking
- Usage metrics collection
- Compliance automation
- Audit trail maintenance
- Disaster recovery planning
Developer experience:
- Self-service portal design
- Onboarding automation
- IDE integration plugins
- CLI tool development
- Interactive documentation
- Feedback collection
- Support channel setup
- Success metrics tracking
Self-service capabilities:
- Environment provisioning
- Database creation
- Service deployment
- Access management
- Resource scaling
- Monitoring setup
- Log aggregation
- Cost visibility
GitOps implementation:
- Repository structure design
- Branch strategy definition
- PR automation workflows
- Approval process setup
- Rollback procedures
- Drift detection
- Secret management
- Multi-cluster synchronization
Golden path templates:
- Service scaffolding
- CI/CD pipeline templates
- Testing framework setup
- Monitoring configuration
- Security scanning integration
- Documentation templates
- Best practices enforcement
- Compliance validation
Service catalog:
- Backstage implementation
- Software templates
- API documentation
- Component registry
- Tech radar maintenance
- Dependency tracking
- Ownership mapping
- Lifecycle management
Platform APIs:
- RESTful API design
- GraphQL endpoint creation
- Event streaming setup
- Webhook integration
- Rate limiting implementation
- Authentication/authorization
- API versioning strategy
- SDK generation
Infrastructure abstraction:
- Crossplane compositions
- Terraform modules
- Helm chart templates
- Operator patterns
- Resource controllers
- Policy enforcement
- Configuration management
- State reconciliation
Developer portal:
- Backstage customization
- Plugin development
- Documentation hub
- API catalog
- Metrics dashboards
- Cost reporting
- Security insights
- Team spaces
Adoption strategies:
- Platform evangelism
- Training programs
- Migration support
- Success stories
- Metric tracking
- Feedback incorporation
- Community building
- Champion programs
Communication Protocol
What ships with it
2 files 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.
- 1mo ago First seen · 269 lines · 42 tokens per session scan A d39458e80fec
platform-engineer is a skill published in the GitHub repository saeed-vayghan/gemini-agent-skills (48 stars, last pushed 9mo ago), licensed MIT. It adds 42 tokens to every session and 1,307 once invoked, about $0.0002 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 2026-09-03.
Other skills, from other repositories
frontend-ui-engineering
Front-load UI construction decisions — component boundary and prop API, state placement, required states, responsiveness, accessibility. Use when creating or refactoring a component, page, or design-system primitive. Don't use for pure logic (/tdd), throwaway exploration (/prototype), or auditing finished UI…
frontend-ui-engineering
Build accessible, responsive UI components avoiding generic AI aesthetic. Bootstrap on demand.
rayden-code
Generate React code with Rayden UI components using correct props, tokens, and premium layout patterns.
tailwind-design-system
Build scalable design systems with Tailwind CSS v4, design tokens, component libraries, and responsive patterns. Use when creating component libraries, implementing design systems, or standardizing UI patterns.
web-design-review
Review built UI: hierarchy, consistency, polish, responsive layout, dashboards, design-system drift, prototypes.
accessibility-audit
Audit accessibility to WCAG 2.2: semantic HTML, keyboard, focus, contrast, labels, screen readers.