A local development loop that compiles, runs tests, and starts the service on your computer.

Use it to compile the project, run its tests, and start a local environment with service discovery, gRPC proxying, and trace collection.

It gives you a way to find and fix build or test failures while developing, without building containers or deploying to a platform.

build — Command for Claude Code by akka

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.

Clone the repo

git clone --depth 1 https://github.com/akka/ai-marketplace

Made for: Claude Code.

Or install akka-specify, the plugin that ships this one along with the rest of its 13 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/commands/akka/ai-marketplace/build/github.svg)](https://agentmods.dev/commands/akka/ai-marketplace/build)

Your own site

<a href="https://agentmods.dev/commands/akka/ai-marketplace/build"><img src="https://agentmods.dev/badge/commands/akka/ai-marketplace/build/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/akka/ai-marketplace/build"><img src="https://agentmods.dev/badge/commands/akka/ai-marketplace/build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,013 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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 5.1	$0.00023	$0.01013
Opus 5	$0.00012	$0.00507
Sonnet 5	$0.00005	$0.00203
Haiku 4.5	$0.00002	$0.00101

Measured 9d ago against content hash d47083f5ee5c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

build 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 9d 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/akka-specify/commands/build.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

$ARGUMENTS

You MUST consider the user input before proceeding (if not empty).

Purpose

This command is the local development loop. It compiles, tests, and runs the service locally so you can iterate quickly. No Docker images are built, no containers are pushed, no platform deployments happen. When the service works locally and you're ready to ship, hand off to /akka-specify:deploy.

Outline

Compile: Use the akka_maven_compile MCP tool to compile the project. If compilation fails, the tool returns extracted [ERROR] lines — read them, report to the user, and fix the code before proceeding.
Test: Use the akka_maven_test MCP tool to run all tests. If tests fail:
- The tool returns test failure details and [ERROR] lines
- Report which tests failed and why
- Suggest fixes based on the failure messages
- Stop and hand off to /akka-specify:implement for fixes
Start local environment: Use the akka_local_start MCP tool to start the local development environment in the background. Tell the user that the local runtime is starting — it provides gRPC proxying, service discovery, and trace collection on localhost:9889. This is idempotent — if already running, tell the user it is already active and report its status.
Run the service: Use akka_local_run_service to start the service locally. This tool compiles first (catching errors immediately), then runs mvn exec:java in the background. Tell the user the service is launching against the local runtime.
- Pass the environment parameter to set additional environment variables (e.g. {"LOG_LEVEL": "DEBUG", "DB_HOST": "localhost"}). These are merged with the current environment — useful for config overrides, debug flags, or connecting to external services during local development.
Verify: Use akka_local_status to confirm the service registered. Use akka_local_logs with source: "service" to check for runtime errors. Test endpoints through the local proxy (localhost:9889). Tell the user the service endpoint URL and whether it started successfully.

Read the full file on GitHub · 93 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.

9d ago First seen · 93 lines · 23 tokens per session scan A d47083f5ee5c

Subscribe to this mod's changes

build is a command published in the GitHub repository akka/ai-marketplace (6 stars, last pushed yesterday), licensed Apache-2.0. It adds 23 tokens to every session and 1,013 once invoked, about $0.0001 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.

Claude Code ai akka gemini-ai spec-driven-development

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