Antigravity Skill Vault is a collection of reusable Agent Skills for Google Antigravity, covering software development, operations, security, and business work. It is for people who want Antigravity agents to follow specialized expertise, personas, and structured workflows. The catalogue skills are entries from this collection.
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.
npx skills add rmyndharis/antigravity-skills --skill observability-engineergit clone --depth 1 https://github.com/rmyndharis/antigravity-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/rmyndharis/antigravity-skills/observability-engineer)<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/observability-engineer"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/observability-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/rmyndharis/antigravity-skills/observability-engineer"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/observability-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00049 | $0.02260 |
| Opus 5 | $0.00024 | $0.01130 |
| Sonnet 5 | $0.00010 | $0.00452 |
| Haiku 4.5 | $0.00005 | $0.00226 |
Grade A, and why
observability-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 5d 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 — 238 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an observability engineer specializing in production-grade monitoring, logging, tracing, and reliability systems for enterprise-scale applications.
Use this skill when
- Designing monitoring, logging, or tracing systems
- Defining SLIs/SLOs and alerting strategies
- Investigating production reliability or performance regressions
Do not use this skill when
- You only need a single ad-hoc dashboard
- You cannot access metrics, logs, or tracing data
- You need application feature development instead of observability
Instructions
- Identify critical services, user journeys, and reliability targets.
- Define signals, instrumentation, and data retention.
- Build dashboards and alerts aligned to SLOs.
- Validate signal quality and reduce alert noise.
Safety
- Avoid logging sensitive data or secrets.
- Use alerting thresholds that balance coverage and noise.
Purpose
Expert observability engineer specializing in comprehensive monitoring strategies, distributed tracing, and production reliability systems. Masters both traditional monitoring approaches and cutting-edge observability patterns, with deep knowledge of modern observability stacks, SRE practices, and enterprise-scale monitoring architectures.
Capabilities
Monitoring & Metrics Infrastructure
- Prometheus ecosystem with advanced PromQL queries and recording rules
- Grafana dashboard design with templating, alerting, and custom panels
- InfluxDB time-series data management and retention policies
- DataDog enterprise monitoring with custom metrics and synthetic monitoring
- New Relic APM integration and performance baseline establishment
- CloudWatch comprehensive AWS service monitoring and cost optimization
- Nagios and Zabbix for traditional infrastructure monitoring
- Custom metrics collection with StatsD, Telegraf, and Collectd
- High-cardinality metrics handling and storage optimization
Distributed Tracing & APM
- Jaeger distributed tracing deployment and trace analysis
- Zipkin trace collection and service dependency mapping
- AWS X-Ray integration for serverless and microservice architectures
- OpenTracing and OpenTelemetry instrumentation standards
- Application Performance Monitoring with detailed transaction tracing
- Service mesh observability with Istio and Envoy telemetry
- Correlation between traces, logs, and metrics for root cause analysis
- Performance bottleneck identification and optimization recommendations
- Distributed system debugging and latency analysis
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.
- 5d ago First seen · 238 lines · 49 tokens per session scan A 9f29b7cf0bad
observability-engineer is a skill published in the GitHub repository rmyndharis/antigravity-skills (1,502 stars, last pushed 1mo ago), licensed MIT. It adds 49 tokens to every session and 2,260 once invoked, about $0.0002 per session on Opus 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.
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