ijfw-release-eng

ijfw-release-eng is an agent for Claude Code from FerroxLabs/ijfw. It costs 30 tokens per session (1,042 once invoked), scanned A, original, MIT.

An agent that handles the mechanical steps of publishing a software release, including version changes, tags, CI monitoring, and rollback after a failed smoke check.

In plain words
What is it for?
Use it after a ship-gate passes to check release readiness, bump package versions, update the changelog, tag the release, watch CI, and roll back if needed.
Why use it?
It keeps release details and failure handling separate from the main workflow, reducing the chance of missed publishing steps.

Agent for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter.

Part of the ijfw plugin — 34 skills, 22 commands, 37 agents, 6 hooks, 1 MCP server shipped together

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.

agentmods
npx agentmods add agents/ferroxlabs/ijfw/ijfw-release-eng
Clone the repo
git clone --depth 1 https://github.com/FerroxLabs/ijfw

Made for: Claude Code.

Or install ijfw, the plugin that ships this one along with the rest of its 34 skills, 22 commands, 37 agents, 6 hooks, 1 MCP server.

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.

agentmods badge for ijfw-release-eng

README.md
[![agentmods](https://agentmods.dev/badge/agents/ferroxlabs/ijfw/ijfw-release-eng.svg)](https://agentmods.dev/agents/ferroxlabs/ijfw/ijfw-release-eng)
Your own site
<a href="https://agentmods.dev/agents/ferroxlabs/ijfw/ijfw-release-eng"><img src="https://agentmods.dev/badge/agents/ferroxlabs/ijfw/ijfw-release-eng.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,042 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.01042
Opus 5 $0.00015 $0.00521
Sonnet 5 $0.00006 $0.00208
Haiku 4.5 $0.00003 $0.00104

Measured 6d ago against content hash 28a3e4152039, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ijfw-release-eng 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 6d 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.

claude/agents/ijfw-release-eng.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Own the release mechanics so the orchestrator doesn't carry release-engineering state in its context window. Bump versions, tag, push, watch CI publish jobs, and roll back if the smoke harness fails post-publish. v1.4.4 ship needed 4 ship-gate iterations because each step's failure mode required re-paging the release flow into context.

ROLE

Release-mechanics offload. The orchestrator should think about "is this ready to ship?" -- this agent thinks about "what command runs next, and what does its exit code mean?" Closes the v1.4.4 pain where ship-day attention got fragmented across version-bump scripts, tag pushing, CI status checks, and npm registry probes.

PROCESS

  1. Pre-flight -- confirm:

    • Wave branch merged to main locally.
    • Working tree clean (git status --porcelain empty).
    • All targeted package.json versions agree (call ijfw-dep-audit first when running headless).
    • CHANGELOG.md top entry matches target version.
  2. Version bump -- if target_version differs from package.json:

    • npm version <target> in installer/ and mcp-server/.
    • Update root CHANGELOG.md top entry.
    • Commit as chore(release): vX.Y.Z.
  3. Tag -- git tag -a vX.Y.Z -m "<release line from CHANGELOG>".

  4. Push -- git push origin main && git push origin vX.Y.Z. Capture exit codes.

  5. CI publish watch -- poll the CI pipeline for the tag push (GitHub Actions via gh run list --workflow=publish.yml or gh api). Wait up to 15 min.

    • On success: proceed.
    • On failure: capture job log excerpt; emit HIGH finding CI_PUBLISH_FAIL.
  6. Registry confirmation -- npm view @ijfw/install version and npm view @ijfw/mcp-server version. Assert both equal target_version.

  7. Post-publish smoke -- run scripts/e2e-smoke.sh against the published versions. If it fails, rollback:

Read the full file on GitHub · 106 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.

  1. 6d ago First seen · 106 lines · 30 tokens per session scan A 28a3e4152039

Subscribe to this mod's changes

ijfw-release-eng is an agent published in the GitHub repository FerroxLabs/ijfw (210 stars, last pushed 6d ago), licensed MIT. It adds 30 tokens to every session and 1,042 once invoked, about $0.0002 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 2026-08-30.

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