Enterprise Skills Registry

This registry provides 23 enterprise-ready AI Agent Skills. While built upon the foundational agentskills.io specification, this framework heavily extends the standard to meet strict enterprise security, canonical server registration (castor://skills/{domain}/{category}/{name}/{version}), and performance requirements for the Google Agent Development Kit (ADK).

Enterprise Skill Lifecycle

graph LR
    A[Source Skill github:// / file://] --> B[cstr register]
    B --> C[Castor Registry]
    C --> D["Canonical URI: castor://skills/{domain}/{category}/{name}/{version}"]
    D --> E["cstr add castor://skills/{domain}/{category}/{name}/{version}"]
    E --> F[Grounded ADK Agent]

Scaffolding & Setup Meta-Skills

Meta-Skill	License	Technology & Build Stack	Description
`mono-repo-setup`	`Apache-2.0`	Bazel Bzlmod Polyglot	Scaffolding for polyglot monorepos (Go 1.26+, Python 3.13 uv, Java 17+ Maven, TypeScript React 19 pnpm), root Bazel configs, and `configs/terraform/`.
`python-project-setup`	`Apache-2.0`	Python 3.13, uv & Bazel	Scaffolding for enterprise Python services using `uv`, wrapped in Bazel `rules_python`, with Google OAuth2, None safety, and cascading TOML.
`go-project-setup`	`Apache-2.0`	Go 1.26+ & Bazel	Scaffolding for Go microservices using standard `/cmd`, `/internal`, `/pkg`, `/api` layout, Bazel `rules_go`/`gazelle`, nil safety, and `configs/terraform/`.
`java-project-setup`	`Apache-2.0`	Java 17+ / 21 LTS, Maven & Bazel	Scaffolding for Java microservices using Maven POM with latest GCP BOM, wrapped in Bazel `rules_java`, with Optional/NonNull safety and `configs/terraform/`.

Domain & Technology Skills

Skill Directory	License	Technology / Domain	SDLC, Google OAuth2, Error Handling & 429 Highlights
`bazel-modules`	`Apache-2.0`	Bazel & Bzlmod	Bzlmod dependency graphs, hermetic TDD, `rules_hugo` GitHub Pages publishing, coverage collection, and SemVer.
`react-vite`	`Apache-2.0`	React 19 & Vite 6	Google OAuth2 PKCE/GIS, HTTP 429 countdown banners, `strictNullChecks`, optional chaining, paired Vitest TDD, 85% coverage.
`python-core`	`Apache-2.0`	Python 3.13 & UV	None safety, paired positive/negative pytest TDD, 90% coverage enforcement, Hugo site publishing, and SemVer.
`python-fastapi`	`Apache-2.0`	FastAPI Enterprise	Google OAuth2 Bearer token verification, slowapi 429 rate limiting, async REST TDD with httpx, 90% coverage, and SemVer.
`python-fastmcp`	`Apache-2.0`	FastMCP Protocol	FastMCP tool TDD, GitHub Actions schema validation, prompt injection defense, Pydantic bounds, and SemVer.
`python-adk-fastapi`	`Apache-2.0`	FastAPI & Google ADK	Superior pattern wrapping ADK in FastAPI on Uvicorn, Google OAuth2 user token delegation to CAPI, tenacity 429 backoff with jitter.
`go-lang`	`Apache-2.0`	Go 1.26+ Services	Google OAuth2 ID token verification middleware, retryablehttp 429 backoff, nil pointer safety, paired table-driven TDD.
`alloydb`	`Apache-2.0`	AlloyDB & pgvector	Testcontainers TDD, migration CI/CD validation, private IP VPC security, SSL enforcement, and SemVer schema versioning.
`bigquery`	`Apache-2.0`	BigQuery & CAPI	Dry-run query TDD, SQLFluff linting, GE OAuth security delegation, Protobuf normalization, and SemVer.
`opentelemetry-google`	`Apache-2.0`	OpenTelemetry & GCP Trace	InMemorySpanExporter TDD, CI/CD pipeline verification, PII scrubbing security, batch flush lifecycles, and SemVer.
`terraform-gcp`	`Apache-2.0`	Terraform for GCP	`terraform test` TDD, GitHub Actions CI/CD with tflint, GCS remote state security, least-privilege IAM, and SemVer.
`configuration-modenv`	`Apache-2.0`	Configuration & modenv	Cascading TOML precedence TDD, GitHub Actions CI schema validation, XOR cipher memory decryption, and SemVer.
`java-enterprise`	`Apache-2.0`	Java 17+ & Javalin	Google OAuth2 ID token verifier, Resilience4j 429 retries, Optional/NonNull null safety, JUnit 5 TDD, JaCoCo 85% coverage.
`a2a`	`Apache-2.0`	A2A Protocol & Orchestration	Component TDD, GitHub Actions CI validation, token bucket rate limiting, HMAC message auth (CWE-306), and SemVer.
`a2ui`	`Apache-2.0`	A2UI v0.8 & Gemini Enterprise	Sandboxed iframe CSP policies (CWE-1021), postMessage origin checks (CWE-346), right-aligned actions with `justify-end`, and component TDD.
`docker-containers`	`Apache-2.0`	Multi-Stage Docker	Container health check TDD, GitHub Actions Trivy vulnerability scanning, non-root user security, and immutable SemVer tags.
`nx-monorepo`	`Apache-2.0`	NX Polyglot Monorepo	Affected TDD testing, GitHub Actions CI with remote caching, module boundary security rules, and SemVer release orchestration.
`protobuf-grpc`	`Apache-2.0`	Protobuf & gRPC	In-process gRPC TDD, Buf breaking change detection, mTLS/auth security, Bazel rules_proto_grpc, and SemVer.
`google-adk-skill-builder`	`Apache-2.0`	ADK Meta-Skill Factory	ADK evaluator TDD, GitHub Actions schema validation, human-in-the-loop security reviews, progressive disclosure, and SemVer.

Skill Anatomical Blueprint

Each skill directory contains:

SKILL.md: Root specification document with YAML frontmatter metadata, trigger conditions, core rules, and implementation patterns.
scripts/: Helper utilities and setup scripts.
examples/: Reference implementations and code snippets.
resources/ & references/: Supporting documentation, schema definitions, and templates.