Skills Catalog

This is the authoritative summary of templates/skills/INDEX.md: every skill, agent, and command ported into ai-core-kit, across both layers. For each item the INDEX records its layer, the source repo + license it was vendored or re-authored from, and the trigger that wires it into a fork (a project.manifest.yaml value, an archetype, or “always”).

For the complete capability list of every skill (what each does + its trigger, grouped by meta-builders / engineering / language packs / design-system / telemetry), see the Skills Reference. Companion reference pages: Agents, Commands, Hooks, MCP, and Observability.

Commands (e.g. /rpi/research) drive agents (code-explorer, architect) which invoke skills (coding-standards); the spine lives in two layers — META (.claude/skills/, builds the kit) and CHILD (templates/skills + agents + commands, rendered into a fork). The RPI loop research → plan → implement runs requirement-parser → architect → code-reviewer / security-reviewer, gated research → plan by constitutional-validator.

The two layers — never conflate them

META = .claude/skills/ — skills that help build the kit. Not rendered into forks; never gated by a child contract.
CHILD = templates/skills/, templates/agents/, templates/commands/ — the payload /ack-init (P4) renders into a fork, gated by the child manifest.

License discipline. Apache-2.0 items (anthropics/skills) are copied/adapted with the NOTICE preserved; MIT items (ecc, claude-skills, claude-code-best-practice) are re-authored in kit style with attribution. Proprietary Anthropic doc skills (docx/pdf/pptx/xlsx) were never read, copied, or derived from. Full ledger: License ledger & references.

META — build the kit (not rendered into forks)

Skill	Source	License	Provenance	Trigger
`skill-creator`	anthropics/skills	Apache-2.0	Vendored + adapted	META only — author/benchmark kit skills.
`mcp-builder`	anthropics/skills	Apache-2.0	Vendored + adapted	META only — build/extend an MCP server (incl. a child’s `features.mcp` server).
`skill-validator`	author-new (wraps `lint-frontmatter.py`)	Apache-2.0 (kit)	Original	META only — validate kit skills/agents/commands against frontmatter rules.
`cost-telemetry` (META)	author-new	kit (MIT)	Original	META only — interpret the offline aggregator over a kit build transcript.

skill-creator/agents/{analyzer,comparator,grader}.md are internal sub-agent prompts of the skill, not standalone kit agents — they carry no kit agent frontmatter and are not linted as agents.

CHILD — engineering & product skills

Top-level templates/skills/, archetype/manifest-gated.

Skill	Source	License	Trigger
`coding-standards`	author-new	MIT	Always — cross-language quality floor.
`error-handling`	author-new	MIT	Always for code archetypes (`backend-api`, `fullstack`, `cli`, `library`).
`code-tour`	author-new	MIT	Always — onboarding/PR/RCA walkthroughs; emits `.tours/`.
`architecture-decision-records`	author-new (Nygard ADR)	MIT	Always — records to `docs/adr/`.
`production-audit`	author-new	MIT	`backend-api`, `fullstack`, `cli`. Skip docs-only/library.
`cost-audit`	author-new	MIT	`features.cost_telemetry == true` OR archetype runs paid jobs/agents.
`cost-telemetry` (CHILD)	author-new	MIT	`features.cost_telemetry == true`. Runs `telemetry/aggregate.py`.
`agent-eval`	author-new	MIT	`features.agent_eval == true`.
`frontend-a11y`	author-new	MIT	`fullstack` with React/Next UI (`framework in [next, remix]`).
`ui-design-system`	alirezarezvani/claude-skills	MIT (re-authored)	`fullstack` / UI archetypes, or `features.design_system == true`.
`saas-scaffolder`	alirezarezvani/claude-skills	MIT (re-authored)	`saas` / `fullstack` with auth+billing.
`spec-to-repo`	alirezarezvani/claude-skills	MIT (re-authored)	Greenfield scaffolding / new-project flows.

The fullstack design-system ships three additional skills (shadcn-ui, brand-guidelines, frontend-design-guidelines) only when design_system.install: true — see Design system.

CHILD — reusable agents

templates/agents/. The RPI + review fleet. ECC supplies the engineering reviewers; claude-code-best-practice supplies the RPI-flow agents.

Agent	Source	License	Model	Trigger
`architect`	affaan-m/ecc	MIT	opus	Always — design/ADR/trade-offs; RPI plan phase.
`code-explorer`	affaan-m/ecc	MIT	sonnet	Always — discovery step of RPI.
`code-reviewer`	affaan-m/ecc	MIT	sonnet	Always for code archetypes — pre-PR review.
`security-reviewer`	affaan-m/ecc	MIT	sonnet	Code archetypes touching auth/input/payments; pre-release.
`silent-failure-hunter`	affaan-m/ecc	MIT	sonnet	Code archetypes doing I/O/DB/network/transactions.
`refactor-cleaner`	affaan-m/ecc	MIT	sonnet	Always for code archetypes — dedicated cleanup pass.
`requirement-parser`	claude-code-best-practice (`rpi/`)	MIT	sonnet	RPI research step 1; render when `features.rpi == true`.
`constitutional-validator`	claude-code-best-practice (`rpi/`)	MIT	opus	RPI research→plan gate; render when the child has a constitution/archetype.

CHILD — RPI & product commands

templates/commands/.

Command	Source	License	Trigger
`/rpi/research`	claude-code-best-practice	MIT	`features.rpi == true`. RPI step 1 (GO/NO-GO).
`/rpi/plan`	claude-code-best-practice	MIT	`features.rpi == true`. RPI step 2 (planning docs).
`/rpi/implement`	claude-code-best-practice	MIT	`features.rpi == true`. RPI step 3 (phased exec + gate).
`/prd`	author-new	MIT	Product/SaaS archetypes or `features.product == true`.
`/rice`	author-new	MIT	Product/SaaS archetypes or `features.product == true`.

CHILD — language / framework / DB packs

templates/skills/lang/, a deterministic manifest-gated render set. The authoritative trigger table is templates/skills/lang/INDEX.md.

Pack	Source	License	Trigger (manifest condition)
`python-patterns`	affaan-m/ecc	MIT	`project.language == python`
`python-testing`	affaan-m/ecc	MIT	`project.language == python`
`typescript-patterns`	author-new	MIT	`project.language == typescript`
`go-patterns`	affaan-m/ecc	MIT	`project.language == go`
`rust-patterns`	affaan-m/ecc	MIT	`project.language == rust`
`node-api-patterns`	author-new (informed by ECC nestjs)	MIT	`project.framework in [express, nestjs]`
`react-patterns`	affaan-m/ecc	MIT	`project.framework in [next, remix]` (React fullstack only)
`postgres-patterns`	affaan-m/ecc	MIT	`persistence.db == postgres`
`prisma-patterns`	affaan-m/ecc	MIT	`persistence.orm == prisma`
`docker-patterns`	affaan-m/ecc	MIT	containerization — no manifest key yet (see gaps).

Deferred / not ported (no silent caps)

These were in the port plan or surfaced as gaps but are not present in the current ported set. Listed so nothing disappears silently — see the Roadmap for the full deferred / not-ported list.

Language / framework / DB enum values not yet ported:

Manifest enum value	Disposition
`project.language == java`	`java-coding-standards` (+ testing) routed outside the G4 minimum; future pack.
`project.framework == fastapi`	`fastapi-patterns` (copy from ecc) planned.
`project.framework == gin`	`gin-patterns` author-new, planned.
`project.framework == axum`	`axum-patterns` author-new, planned.
`project.framework in [sveltekit, nuxt]`	`sveltekit-patterns` / `nuxt4-patterns` author-new. `react-patterns` must NOT render for these.
`persistence.db in [mysql, sqlite, mongodb]`	`mysql-patterns` (ecc), `sqlite`/`mongodb` author-new.
`persistence.orm in [sqlalchemy, drizzle, gorm]`	all three author-new in the port plan.

Schema/interview gap blocking clean docker-patterns wiring. templates/interview/questions.yaml never asks whether the child uses Docker, so docker-patterns has no enum to gate on. Recommendation: add a project.containerized boolean, OR always-render docker-patterns for backend-api/fullstack.

Anthropics example skills available but not vendored here: algorithmic-art, brand-guidelines, canvas-design, claude-api, frontend-design, internal-comms, slack-gif-creator, theme-factory, web-artifacts-builder, webapp-testing. (doc-coauthoring ships no LICENSE.txt → not vendorable.) Adopt later behind feature flags if needed.

Offline Cost Telemetry Design System (shadcn/ui)