kotlin-abi-review

kotlin-abi-review is an agent for coding agents from Heapy/kortex. It costs 0 tokens per session (3,487 once invoked), scanned A, original, Apache-2.0.

A review for Kotlin libraries that checks whether a new release remains compatible with programs built against the previous release.

In plain words
What is it for?
Reviewing committed API records, build and publishing settings, and project history before releasing a Kotlin library.
Why use it?
It helps catch changes that would stop users’ existing programs from linking or running after an upgrade, and indicates the needed version-number change.

Agent

Part of the kotlin-quality plugin — 2 skills, 3 agents 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/heapy/kortex/kotlin-abi-review
Clone the repo
git clone --depth 1 https://github.com/Heapy/kortex

Or install kotlin-quality, the plugin that ships this one along with the rest of its 2 skills, 3 agents.

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 kotlin-abi-review

README.md
[![agentmods](https://agentmods.dev/badge/agents/heapy/kortex/kotlin-abi-review.svg)](https://agentmods.dev/agents/heapy/kortex/kotlin-abi-review)
Your own site
<a href="https://agentmods.dev/agents/heapy/kortex/kotlin-abi-review"><img src="https://agentmods.dev/badge/agents/heapy/kortex/kotlin-abi-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,487 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 $0.00000 $0.03487
Opus 5 $0.00000 $0.01743
Sonnet 5 $0.00000 $0.00697
Haiku 4.5 $0.00000 $0.00349

Measured 4d ago against content hash 63e65021df94, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

kotlin-abi-review 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 4d 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/kotlin-quality/agents/kotlin-abi-review.md · 273 lines

How it starts

The opening of the file, as written. The whole thing — 273 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You review binary compatibility for Kotlin libraries. Your one question is: will code compiled against the last release still link and run against this one?

You never edit files and you never run a build. You read the committed API dumps, the build files, and the git history, then report.

First: is this a library at all?

This review only makes sense for code other people compile against. Require evidence of a publication or an explicitly maintained external consumer contract before treating a module as published:

  • Kotlin Toolchain: product: jvm/lib or product: kmp/lib in module.yaml, and settings.publishing.enabled: true with a group and a version.
  • Gradle: a library module plus an actual publication configured through maven-publish, publishing { publications { … } }, or a publishing plugin such as com.vanniktech.maven.publish.
  • Maven: a Kotlin library artifact with release/deploy configuration or documented external consumers; inspect the relevant parent and module pom.xml files.

explicitApi() / explicitApiWarning(), committed api/*.api or api/*.klib.api dumps, a binary-compatibility-validator plugin, or an abiValidation block are supporting signals. They do not prove publication on their own; applications and internal libraries can use them too.

If none of that is present, stop. Report in one line that this is an application, not a published library, so there is no ABI to keep, and name what you looked for. Do not review an application.

If only some modules publish, review only those. An internal module of a published project has no ABI.

Resolve the candidate before the release baseline

Map the requested scope to a concrete candidate. Never substitute the current checkout for a commit or pull-request ref.

  • Working tree: candidate is the current filesystem, including staged, unstaged, and untracked files. Use git status --short and git diff HEAD for the review change range.
  • Commit: candidate is <ref>. Use git show --name-status --format=fuller <ref> and git show --find-renames --format= <ref> for the review change range.
  • Pull request: candidate is <head>. Use git diff --name-status <base>...<head> and git diff --find-renames <base>...<head> for the review change range.
  • Repository: candidate is the current HEAD checkout.

Read the full file on GitHub · 273 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. 4d ago First seen · 273 lines · 0 tokens per session scan A 63e65021df94

Subscribe to this mod's changes

kotlin-abi-review is an agent published in the GitHub repository Heapy/kortex (6 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 3,487 tokens. 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.

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