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Agent skill

HTTP Interface Clients

by rrezartprebreza in rrezartprebreza/spring-boot-skills

A skill your agent uses when calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces.

MITAuto-check passedBackend & APIs

Install HTTP Interface Clients

skills CLI
$ npx skills add rrezartprebreza/spring-boot-skills --skill http-interface-clients -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install rrezartprebreza/spring-boot-skills http-interface-clients --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/rrezartprebreza/spring-boot-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/spring-boot-4/http-interface-clients .claude/skills/http-interface-clients && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
http-interface-clients
GitHub stars
298
Token cost
~612 tokens
SKILL.md length
208 words
Files
4
Skills in repo
51
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces.

  • Calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces
  • SKILL.md covers Define and register the…, Configure groups and transport and Gotchas
  • Runs Java scripts from its folder
  • Tasks that involve Backend development

What it does

HTTP Interface Clients is an agent skill from rrezartprebreza/spring-boot-skills. Use when calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces. Covers ImportHttpServices, grouped base URLs and timeouts, and RestClient versus WebClient selection.

Its SKILL.md is about 610 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `agents/openai.yaml`).

It sits in Backend & APIs, covering Backend development and REST APIs. It works with Spring Boot. The repository describes itself as: Production-grade Claude Code and Codex skills for Spring Boot developers. The licence is MIT.

When your agent uses it

  • Calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces
  • Tasks that involve Backend development
  • Tasks that involve REST APIs

Example prompts

  • “/http-interface-clients”

What it can do on your machine

Read from SKILL.md and the folder at commit f0c06a0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships script files (Java), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

HTTP Interface Clients loads about 612 tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 208 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~612

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from rrezartprebreza/spring-boot-skills at commit f0c06a0, republished under its MIT licence (© rrezartprebreza). 208 words, ~612 tokens.

Download SKILL.mdSave it as .claude/skills/http-interface-clients/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
http-interface-clients
description
Use when calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces. Covers ImportHttpServices, grouped base URLs and timeouts, and RestClient versus WebClient selection.

Declarative HTTP Interface Clients (Boot 4)

Define a remote API as an interface with @HttpExchange methods. Boot 4 registers the proxy with @ImportHttpServices, so do not create a manual factory for every client.

Define and register the interface

java
@HttpExchange("/orders")
public interface OrderApiClient {
    @GetExchange("/{id}")
    OrderDto get(@PathVariable UUID id);

    @PostExchange
    OrderDto create(@RequestBody CreateOrderRequest request);
}

@SpringBootApplication
@ImportHttpServices(group = "orders", basePackages = "com.example.client.orders")
public class Application { }

Inject OrderApiClient like any other bean. The interface needs no @Component and no implementation class.

Configure groups and transport

yaml
spring:
  http:
    clients:
      connect-timeout: 2s
      read-timeout: 5s
    serviceclient:
      orders:
        base-url: https://orders.internal.example.com
        read-timeout: 10s

spring.http.clients.* contains global transport defaults. spring.http.serviceclient.<group>.* contains per-group settings, and the group name must match @ImportHttpServices.

The default client type is blocking RestClient. Select HttpServiceGroup.ClientType.WEB_CLIENT for interfaces returning Mono or Flux, and include the WebClient starter. Group configurers apply to a group, not one interface.

Manual HttpServiceProxyFactory wiring remains valid for one-off clients, but it is the Boot 3 pattern and should not be the default in Boot 4.

Gotchas

  • Agent creates a HttpServiceProxyFactory bean for every client - use @ImportHttpServices and groups.
  • Agent adds @Component or an implementation to the interface - generated proxies need neither.
  • Agent uses spring.http.client.* - global defaults are under spring.http.clients.*; group settings use serviceclient.
  • Agent hard-codes a host in @HttpExchange and sets a group base URL - keep the host in configuration.
  • Agent returns Mono or Flux with the default client - select WEB_CLIENT explicitly.
  • Agent assumes a group configurer customizes one interface - configure the group or separate the group.

© rrezartprebreza, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files in skills/spring-boot-4/http-interface-clients of rrezartprebreza/spring-boot-skills.

  • SKILL.md
  • agents/openai.yaml
  • examples/bad-order-client.java
  • examples/good-order-client.java

Open the folder on GitHubat commit f0c06a0

Compare with similar skills

HTTP Interface Clients next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

HTTP Interface Clients compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
HTTP Interface Clients this skillrrezartprebreza/spring-boot-skills298—~612Automated safety check: PassMIT
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Grails Developer Guideapache/grails-core2.9k—~4.9kAutomated safety check: PassApache-2.0
Spring Boot Skillpiomin/sample-spring-modulith144—~668Automated safety check: PassNone
Progensivaprasadreddy/sivalabs-agent-skills188—~2.7kAutomated safety check: NotesMIT
Spring Boot Crud Patternsgiuseppe-trisciuoglio/developer-kit355—~2.5kAutomated safety check: NotesMIT

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Works with

Categories

Questions about HTTP Interface Clients

What does HTTP Interface Clients do?

A skill your agent uses when calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces. HTTP Interface Clients is an agent skill from rrezartprebreza/spring-boot-skills. Use when calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces.

When should I use HTTP Interface Clients?

HTTP Interface Clients fits situations like: calling external HTTP APIs from Spring Boot 4 / Spring Framework 7 with declarative HttpExchange interfaces; tasks that involve Backend development; tasks that involve REST APIs.

How do I install HTTP Interface Clients in Claude Code?

Run `npx skills add rrezartprebreza/spring-boot-skills --skill http-interface-clients -a claude-code`. Or copy the skill folder (skills/spring-boot-4/http-interface-clients in rrezartprebreza/spring-boot-skills) into .claude/skills/http-interface-clients in your project. Claude Code loads it when a task matches its description.

How do I install HTTP Interface Clients in Codex?

Run `npx skills add rrezartprebreza/spring-boot-skills --skill http-interface-clients -a codex`. Or copy the skill folder (skills/spring-boot-4/http-interface-clients in rrezartprebreza/spring-boot-skills) into .agents/skills/http-interface-clients in your project. Codex loads it when a task matches its description.

Can I use HTTP Interface Clients in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add rrezartprebreza/spring-boot-skills --skill http-interface-clients -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/http-interface-clients, .gemini/skills/http-interface-clients, .github/skills/http-interface-clients and .opencode/skills/http-interface-clients in your project.

What does HTTP Interface Clients need to run?

Going by SKILL.md and its folder, HTTP Interface Clients needs Java for the scripts in its folder.

Does HTTP Interface Clients access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is HTTP Interface Clients safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does HTTP Interface Clients use?

HTTP Interface Clients is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does HTTP Interface Clients use?

About 612 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to HTTP Interface Clients?

Skills that share tags, products or a category with HTTP Interface Clients: Dr Jskill (jdubois/dr-jskill, 342 stars), Grails Developer Guide (apache/grails-core, 2.9k stars), Spring Boot Skill (piomin/sample-spring-modulith, 144 stars) and Progen (sivaprasadreddy/sivalabs-agent-skills, 188 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains HTTP Interface Clients?

rrezartprebreza (a GitHub user) maintains it in rrezartprebreza/spring-boot-skills, which has 298 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on September 21, 2026.

Source: rrezartprebreza/spring-boot-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.