A Claude Code plugin that uses OpenAPI descriptions—files that document an API—to generate TypeScript clients and related code.

Generating API clients, TanStack Query or SWR hooks, Zod validation schemas, MSW test mocks, Hono server handlers, and MCP servers from OpenAPI specifications.

It reduces repetitive work and keeps API code aligned with the documented endpoints and data shapes.

orval — Plugin by orval-labs

Install

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.

agentmods

npx agentmods add plugins/orval-labs/orval/marketplace

Claude Code

/plugin marketplace add orval-labs/orval

Clone the repo

git clone --depth 1 https://github.com/orval-labs/orval

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

orval 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 today.

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.

.claude-plugin/marketplace.json · 12 lines

What it actually says

{
  "name": "orval",
  "description": "Orval's official plugin for Claude Code",
  "plugins": {
    "orval": {
      "name": "orval",
      "source": "./skills/orval",
      "description": "Generate type-safe API clients, TanStack Query/SWR hooks, Zod schemas, MSW mocks, Hono server handlers, and MCP servers from OpenAPI specs"
    }
  }
}

Changes

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.

today First seen · 12 lines scan A 963f99308018

Subscribe to this mod's changes

orval is a plugin published in the GitHub repository orval-labs/orval (6,410 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-01.

Backend and APIs Frontend ReAct Testing axios-client openapi-specification orval swagger typescript

claude

Kubb is a meta framework for code generation. Generate TypeScript types, Zod schemas, Axios and fetch clients, React Query and Vue Query hooks, Faker mocks and more from an OpenAPI spec. The commands run the Kubb CLI, and a bundled MCP server adds conversational generation.

kubb-labs/kubb · not measured

orval

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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