What is release-engineer?

A release-engineering agent for preparing software releases, choosing versions, generating changelogs, planning deployments, and preparing rollback plans. It covers strategies such as blue-green and canary deployments, where new code is introduced gradually or alongside the old version.

Use it to manage release branches, choose semantic versions, create changelogs, test release candidates, plan deployments and hotfixes, manage feature flags, and define rollback steps.

It helps teams ship changes in a controlled way and prepare for failures. Clear versioning, testing, rollout, monitoring, and rollback plans reduce release-related risk.

release-engineer — Agent for Claude Code by vibeeval/vibecosystem

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/vibeeval/vibecosystem

agentmods

npx agentmods add agents/vibeeval/vibecosystem/release-engineer

Made for: Claude Code.

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/agents/vibeeval/vibecosystem/release-engineer/github.svg)](https://agentmods.dev/agents/vibeeval/vibecosystem/release-engineer)

Your own site

<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/release-engineer"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/release-engineer/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/agents/vibeeval/vibecosystem/release-engineer"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/release-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 2,813 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	$0.00045	$0.02813
Opus 5.5	$0.00018	$0.01125
Sonnet 5.5	$0.00009	$0.00563
Haiku 4.5	$0.00005	$0.00281

Measured 1mo ago against content hash 8a2c6a9cd7b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

release-engineer 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 1mo 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.

agents/release-engineer.md · 368 lines

How it starts

The opening of the file, as written. The whole thing — 368 lines — stays where its author put it; the contents beside it link to each section on GitHub.