A code generator that creates typed client libraries from an SMD or OpenRPC description of an RPC service. RPC is a way for one program to call functions provided by another program.

Use it to generate Go, TypeScript, PHP, Swift, Kotlin, or Dart clients from a URL or JSON file, or to publish generated clients from a server endpoint.

It avoids hand-writing client code and keeps clients based on the service’s published interface description.

rpcgen — Skill by vmkteam

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 skills/vmkteam/claude-plugins/rpcgen

Any agent

npx skills add vmkteam/claude-plugins --skill rpcgen

Clone the repo

git clone --depth 1 https://github.com/vmkteam/claude-plugins

Made for: Claude Code, Codex.

Or install vmkteam-developer, the plugin that ships this one along with the rest of its 35 skills.

Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 853 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00054	$0.00853
Opus 5	$0.00027	$0.00426
Sonnet 5	$0.00011	$0.00171
Haiku 4.5	$0.00005	$0.00085

Measured 3d ago against content hash 2e3f8008d8ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rpcgen 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 3d 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.

plugins/developer/skills/rpcgen/SKILL.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Rpcgen

Upstream: https://github.com/vmkteam/rpcgen

Генерирует типизированные клиенты из SMD (Service Mapping Description) zenrpc-сервера. Связанный инструмент — rpcdiff (diff OpenRPC schema для breaking-changes в CI).

Tool-зависимость:

tool github.com/vmkteam/rpcgen/v2/cmd/rpcgen

Языки и API

gen.GoClient, gen.TSClient, gen.PHPClient, gen.SwiftClient, gen.KotlinClient, gen.DartClient, gen.OpenRPC(name, url).

vmkteam-паттерн: on-the-fly handler

Сервер раздаёт клиенты с собственных endpoint'ов через rpcgen.Handler:

a.echo.Any("/v1/rpc/api.ts",   appkit.EchoHandlerFunc(rpcgen.Handler(gen.TSClient(typeMapper))))
a.echo.Any("/v1/rpc/api.go",   appkit.EchoHandlerFunc(rpcgen.Handler(gen.GoClient(golang.Settings{Package: appName}))))
a.echo.Any("/v1/rpc/api.swift",     appkit.EchoHandlerFunc(rpcgen.Handler(gen.SwiftClient(swift.Settings{Class: "API", TypeMapper: swiftTypeMapper}))))
a.echo.Any("/v1/rpc/networking.swift", appkit.EchoHandlerFunc(rpcgen.Handler(gen.SwiftClient(swift.Settings{IsProtocol: true, TypeMapper: swiftTypeMapper}))))
a.echo.Any("/v1/rpc/api.kt",        appkit.EchoHandlerFunc(rpcgen.Handler(gen.KotlinClient(kotlin.Settings{Class: "Api", PackageAPI: "com.example.api", TypeMapper: kotlinTypeMapper}))))
a.echo.Any("/v1/rpc/networking.kt", appkit.EchoHandlerFunc(rpcgen.Handler(gen.KotlinClient(kotlin.Settings{Class: "Api", PackageAPI: "com.example.api", IsProtocol: true}))))
a.echo.Any("/v1/rpc/openrpc.json",  appkit.EchoHandlerFunc(rpcgen.Handler(gen.OpenRPC("service", rpcUrl))))

IsProtocol: true для Swift/Kotlin → protocol/interface вместо class/data class
TypeMapper func(schema, current) string — переопределение типов per-язык

Makefile-цели (vmkteam-конвенция)

go-client:
	rpcgen -lang go -url http://localhost:$(PORT)/rpc/ -o ./pkg/client/$(NAME)/

type-script-client: generate
	rpcgen -lang typescript -url http://localhost:$(PORT)/rpc/ -o ../frontend/src/api/factory.generated.ts
	rpcgen -lang typescript -url http://localhost:$(PORT)/vt/ -o ../frontend/src/api/vt.generated.ts

Read the full file on GitHub · 60 lines

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.

3d ago First seen · 60 lines · 54 tokens per session scan A 2e3f8008d8ba

Subscribe to this mod's changes

rpcgen is a skill published in the GitHub repository vmkteam/claude-plugins (7 stars, last pushed 4mo ago), licensed MIT. It adds 54 tokens to every session and 853 once invoked, about $0.0003 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 2026-08-31.

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