# Install vulcain with Homebrew Fast and idiomatic client-driven REST APIs. Version 1.4.2 via Homebrew; verified 2026-07-26. ## Install ```sh sudo av install brew:vulcain ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install vulcain ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:vulcain - **Package manager:** Homebrew - **Package manager page:** - **Version:** 1.4.2 - **Source summary:** Fast and idiomatic client-driven REST APIs - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** AGPL-3.0-only - **Source archive:** - **Last updated:** 2026-07-26T00:30:34+02:00 - **Generated:** 2026-07-26T07:20:29+00:00 ## Executables - vulcain (cli) - vulcain (alias) ## Build dependencies - go ## Install behavior - Post-install hook: not defined - Service: declared - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-26 - Package-manager version: 1.4.2 - Package-manager updated: 2026-07-26 - Local data: ok - Upstream repository: https://github.com/dunglas/vulcain - Upstream latest detected: v1.4.2 (current) ## Project history and usage Vulcain is a Go project and protocol for client-driven REST APIs. It tries to solve common API performance problems such as under-fetching, over-fetching, and the n+1 request pattern while staying close to HTTP, hypermedia links, preload hints, 103 Early Hints, and HTTP/2 server push. ### Project history The public repository was created in September 2019 under Kévin Dunglas's GitHub account. The README presents Vulcain as both a protocol and a reference gateway server: a Caddy web server module that can sit in front of an existing API and make it Vulcain-compatible. The project was published as an Internet-Draft maintained from the same repository, which is notable for a small API tooling project: the author framed Vulcain as a protocol-level alternative to application-specific API query layers rather than just another gateway implementation. ### How it is used A Vulcain client asks for related resources with a `Preload` header or query parameter, and can also request selected fields with a `Fields` header. The gateway follows hypermedia relations, or OpenAPI-described relations for legacy APIs, and can return or push the related resources so a client can later fetch them from cache. In package-nerd terms, the installed `vulcain` command is mainly useful to API and framework developers experimenting with HTTP-native API composition. It is closely associated with API Platform, Caddy, OpenAPI, and the broader debate over when GraphQL-style query layers are necessary. ### Timeline - 2019: The GitHub repository was created and the project was introduced publicly as a client-driven REST approach using HTTP/2 server push. - 2019: v0.1.0 was published on GitHub on October 13, 2019. - 2026: The project was still receiving tagged releases, including v1.4.1 on May 19, 2026. ### Related projects - Vulcain is related to Caddy, API Platform, OpenAPI, GraphQL, JSON:API, HAL, HTTP preload hints, 103 Early Hints, and HTTP/2 server push. ### Sources - - - - ## Security Notes No matching local secret-handling manifest was found for vulcain. Nucleus package metadata is still published here so future coverage has a stable package URL. ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** vulcain - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** head, stable ## Related links - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://www.automicvault.com/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [Networking and protocol packages](https://www.automicvault.com/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [go](https://www.automicvault.com/pkg/brew/go/) - Build dependency declared by Homebrew. - [atac](https://www.automicvault.com/pkg/brew/atac/) - Shares av.db curated category or tags: api, cli, developer-tools, http. - [httpie](https://www.automicvault.com/pkg/brew/httpie/) - Shares av.db curated category or tags: cli, developer-tools, rest. - [posting](https://www.automicvault.com/pkg/brew/posting/) - Shares av.db curated category or tags: cli, developer-tools, http. - [resterm](https://www.automicvault.com/pkg/brew/resterm/) - Shares av.db curated category or tags: cli, developer-tools, http, rest. - [restish](https://www.automicvault.com/pkg/brew/restish/) - Shares av.db curated category or tags: cli, developer-tools, http, rest. - [resty](https://www.automicvault.com/pkg/brew/resty/) - Shares av.db curated category or tags: cli, developer-tools, http, rest. - [twitch-cli](https://www.automicvault.com/pkg/brew/twitch-cli/) - Shares av.db curated category or tags: api, cli, developer-tools. - [ulfius](https://www.automicvault.com/pkg/brew/ulfius/) - Shares av.db curated category or tags: cli, developer-tools, http, rest. ## Combined YAML source View the package source record on GitHub. [combined/vulcain.yml](https://github.com/automic-vault/db/blob/main/combined/vulcain.yml) ## Sources - Nucleus package database - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - cross-ecosystem install command graph