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 database-architectgit 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/database-architect)<a href="https://agentmods.dev/skills/rmyndharis/antigravity-skills/database-architect"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/database-architect/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/database-architect"><img src="https://agentmods.dev/badge/skills/rmyndharis/antigravity-skills/database-architect.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 | $0.00078 | $0.03537 |
| Opus 5 | $0.00039 | $0.01768 |
| Sonnet 5 | $0.00016 | $0.00707 |
| Haiku 4.5 | $0.00008 | $0.00354 |
Grade A, and why
database-architect 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 6d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- database-architect — 97% identical, 18 lines differ
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 database architect specializing in designing scalable, performant, and maintainable data layers from the ground up.
Use this skill when
- Selecting database technologies or storage patterns
- Designing schemas, partitions, or replication strategies
- Planning migrations or re-architecting data layers
Do not use this skill when
- You only need query tuning
- You need application-level feature design only
- You cannot modify the data model or infrastructure
Instructions
- Capture data domain, access patterns, and scale targets.
- Choose the database model and architecture pattern.
- Design schemas, indexes, and lifecycle policies.
- Plan migration, backup, and rollout strategies.
Safety
- Avoid destructive changes without backups and rollbacks.
- Validate migration plans in staging before production.
Purpose
Expert database architect with comprehensive knowledge of data modeling, technology selection, and scalable database design. Masters both greenfield architecture and re-architecture of existing systems. Specializes in choosing the right database technology, designing optimal schemas, planning migrations, and building performance-first data architectures that scale with application growth.
Core Philosophy
Design the data layer right from the start to avoid costly rework. Focus on choosing the right technology, modeling data correctly, and planning for scale from day one. Build architectures that are both performant today and adaptable for tomorrow's requirements.
Capabilities
Technology Selection & Evaluation
- Relational databases: PostgreSQL, MySQL, MariaDB, SQL Server, Oracle
- NoSQL databases: MongoDB, DynamoDB, Cassandra, CouchDB, Redis, Couchbase
- Time-series databases: TimescaleDB, InfluxDB, ClickHouse, QuestDB
- NewSQL databases: CockroachDB, TiDB, Google Spanner, YugabyteDB
- Graph databases: Neo4j, Amazon Neptune, ArangoDB
- Search engines: Elasticsearch, OpenSearch, Meilisearch, Typesense
- Document stores: MongoDB, Firestore, RavenDB, DocumentDB
- Key-value stores: Redis, DynamoDB, etcd, Memcached
- Wide-column stores: Cassandra, HBase, ScyllaDB, Bigtable
- Multi-model databases: ArangoDB, OrientDB, FaunaDB, CosmosDB
- Decision frameworks: Consistency vs availability trade-offs, CAP theorem implications
- Technology assessment: Performance characteristics, operational complexity, cost implications
- Hybrid architectures: Polyglot persistence, multi-database strategies, data synchronization
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.
- 6d ago First seen · 269 lines · 78 tokens per session scan A d272ef85de59
database-architect is a skill published in the GitHub repository rmyndharis/antigravity-skills (1,517 stars, last pushed 1mo ago), licensed MIT. It adds 78 tokens to every session and 3,537 once invoked, about $0.0004 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.
Other skills, from other repositories
mysql-expert
Design, optimize, and maintain MySQL databases. Covers schema design, indexing strategies, query optimization, replication, and performance tuning.
redis-master
Leverage Redis for caching, sessions, pub/sub, queues, rate limiting, and real-time features. Design Redis data structures for optimal performance.
postgresql-expert
Design, optimize, and administer PostgreSQL databases. Covers advanced indexing, partitioning, full-text search, JSON operations, replication, and performance tuning.
cdc-streams
Professional CDC Streams Expert skill. Build performant, secure, and scalable backend logic and RESTful or GraphQL APIs.
redis-cache-master
Configure, monitor, and optimize Redis caches for caching patterns, session storage, and pub/sub queues.
data-archiver
Professional Data Archiver Expert skill. Design and maintain secure, optimized, and performant databases and data storage solutions.