Cloud Functions

Cloud Functions Development

Activation Contract

Use this first when

• The task is to create, update, deploy, inspect, or debug a CloudBase Event Function or HTTP Function that serves application runtime logic.
• The request mentions function runtime, function logs, scf_bootstrap, function triggers, or function gateway exposure.

Read before writing code if

• You still need to decide between Event Function and HTTP Function.
• The task mentions manageFunctions, queryFunctions, manageGateway, or legacy function-tool names.
• The task might require callCloudApi as a fallback for logs or gateway setup.

Then also read

• Detailed reference routing -> ./references.md
• Auth setup or provider-related backend work -> ../auth-tool/SKILL.md
• AI in functions -> ../ai-model-nodejs/SKILL.md
• Long-lived container services or Agent runtimes -> ../cloudrun-development/SKILL.md
• Calling CloudBase official platform APIs from a client or script -> ../http-api/SKILL.md

Do NOT use for

• CloudRun container services.
• Web authentication UI implementation.
• Database-schema design or general data-model work.
• CloudBase official platform API clients or raw HTTP integrations that only consume platform endpoints.

Common mistakes / gotchas

• Picking the wrong function type and trying to compensate later.
• Confusing official CloudBase API client work with building your own HTTP function.
• Mixing Event Function code shape (exports.main(event, context)) with HTTP Function code shape (req / res on port 9000).
• Treating HTTP Access as the implementation model for HTTP Functions. HTTP Access is a gateway configuration for Event Functions, not the HTTP Function runtime model.
• Forgetting that runtime cannot be changed after creation.
• Using cloud functions as the first answer for Web login.
• Forgetting that HTTP Functions must ship scf_bootstrap, listen on port 9000, and include dependencies.

Minimal checklist

• Read Cloud Functions Execution Checklist before deployment or runtime changes.
• Decide whether the task is Event Function, HTTP Function, or actually CloudRun.
• Pick the detailed reference file in references.md before writing implementation code.

Overview

Use this skill when developing, deploying, and operating CloudBase cloud functions. CloudBase has two different programming models:

• Event Functions: serverless handlers driven by SDK calls, timers, and other events.
• HTTP Functions: standard web services for HTTP endpoints, SSE, or WebSocket workloads.

Writing mode at a glance

• If the request is for SDK calls, timers, or event-driven workflows, write an Event Function with exports.main = async (event, context) => {}.
• If the request is for REST APIs, browser-facing endpoints, SSE, or WebSocket, write an HTTP Function with req / res on port 9000.
• If the user mentions HTTP access for an existing Event Function, keep the Event Function code shape and add gateway access separately.

Quick decision table

How to use this skill (for a coding agent)

1. Choose the correct runtime model first

   • Event Function -> exports.main(event, context)
   • HTTP Function -> web server on port 9000
   • If the requirement is really a container service, reroute to CloudRun early

2. Use the converged MCP entrances

   • Reads -> queryFunctions, queryGateway
   • Writes -> manageFunctions, manageGateway
   • Translate legacy names before acting rather than copying them literally

3. Write code and deploy, do not stop at local files

   • Use manageFunctions(action="createFunction") for creation
   • Use manageFunctions(action="updateFunctionCode") for code updates
   • Keep functionRootPath as the parent directory of the function folder
   • Use CLI only as a fallback when MCP tools are unavailable

4. Prefer doc-first fallbacks

   • If a task falls back to callCloudApi, first check the official docs or knowledge-base entry for that action
   • Confirm the exact action name and parameter contract before calling it
   • Do not guess raw cloud API payloads from memory

5. Read the right detailed reference

   • Event Function details -> ./references/event-functions.md
   • HTTP Function details -> ./references/http-functions.md
   • Logs, gateway, env vars, and legacy mappings -> ./references/operations-and-config.md

Function types comparison

Minimal code skeletons

Event Function hello world

cloudfunctions/hello-event/index.js

exports.main = async (event, context) => {
  return {
    ok: true,
    message: "hello from event function",
    event,
  };
};

cloudfunctions/hello-event/package.json

{
  "name": "hello-event",
  "version": "1.0.0"
}

HTTP Function hello world

cloudfunctions/hello-http/index.js

const http = require("http");

const server = http.createServer((req, res) => {
  res.writeHead(200, { "Content-Type": "application/json" });
  res.end(JSON.stringify({ ok: true, message: "hello from http function" }));
});

server.listen(9000);

cloudfunctions/hello-http/scf_bootstrap

#!/bin/bash
/var/lang/node18/bin/node index.js

cloudfunctions/hello-http/package.json

{
  "name": "hello-http",
  "version": "1.0.0"
}

Preferred tool map

Function management

• queryFunctions(action="listFunctions"|"getFunctionDetail")
• manageFunctions(action="createFunction")
• manageFunctions(action="updateFunctionCode")
• manageFunctions(action="updateFunctionConfig")

Logs

• queryFunctions(action="listFunctionLogs")
• queryFunctions(action="getFunctionLogDetail")
• If these are unavailable, read ./references/operations-and-config.md before any callCloudApi fallback

Gateway exposure

• queryGateway(action="getAccess")
• manageGateway(action="createAccess")
• If gateway operations need raw cloud API fallback, read ./references/operations-and-config.md first

Related skills

• cloudrun-development -> container services, long-lived runtimes, Agent hosting
• http-api -> raw CloudBase HTTP API invocation patterns
• cloudbase-platform -> general CloudBase platform decisions

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