fork-fleet

A monitor for comparing active copies of a code project with their upstream repository. It checks both code changes and differences in settings such as enabled items, variables, models, and schedules.

In plain words
What is it for?
Use it to inspect all active forks, check only code or settings, compare a chosen parent repository, or investigate one fork.
Why use it?
It shows which copies contain useful work to bring back upstream and where the fleet consistently uses different defaults. This avoids checking each fork manually.

Skill for Claude CodeCodex

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 skills/aeonfun/aeon/fork-fleet
Any agent
npx skills add aeonfun/aeon --skill fork-fleet
Clone the repo
git clone --depth 1 https://github.com/aeonfun/aeon

Made for: Claude Code, Codex.

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,477 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00045 $0.08477
Opus 5 $0.00023 $0.04238
Sonnet 5 $0.00009 $0.01695
Haiku 4.5 $0.00005 $0.00848

Measured 3d ago against content hash 17249aa9122f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

fork-fleet scanned grade A with 1 finding 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 3d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Every GitHub call uses `gh api`, which authenticates via `GITHUB_TOKEN` automatically — no `curl`, no `$SECRET` on the command line (so nothing for the Bash permission layer to refuse), no secrets beyond the default `GIT
Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/fork-fleet/SKILL.md · 615 lines

How it starts

The opening of the file, as written. The whole thing — 615 lines — stays where its author put it; the contents beside it link to each section on GitHub.

${var} — Divergence scope selector; space-separated tokens, order-independent, all optional:

  • scope (code | config | both, default both) — which divergence dimension to run.
  • repo=owner/name — override the parent repo whose forks are scanned (else auto-resolved).
  • fork=owner/name — drill into a single fork (forces code scope; config math needs a fleet).

Empty ⇒ both dimensions over the auto-resolved parent. Examples: `` (both, all forks) · code · config · config repo=octo/aeon · fork=alice/aeon.

Today is ${today}. This is the fleet's divergence monitor. It answers two questions the popularity/liveness skills don't:

  1. Code divergence — which active forks are building real work (unique commits, new/modified skills) that's worth pulling back upstream?
  2. Config divergence — where does the configured fleet systematically disagree with upstream's enabled / var / model / schedule defaults, so the operator can flip a default the fleet has already voted on?

skill-gap ranks what's popular (top 15 by enabled count). This skill's code branch surfaces per-fork unique work; its config branch surfaces where operators disagree with defaults. If 6 of 8 configured forks enable a skill upstream defaults off, upstream is shipping the wrong default; if 5 of 8 disable a skill upstream defaults on, that skill is noise. Both are peer-learning signals.

Operating principles

  • Verdict first, catalog second. The operator reads one line and knows if action is needed.
  • Silent when nothing changed. Weekly cadence + a dormant/undivergent fleet = a read-once habit to kill. A clean run notifies nothing.
  • Per-fork compare is one call, not three. /compare/{owner}:main...{fork_owner}:main returns ahead/behind/unique commits/files in a single round-trip; the recursive git-tree returns the fork's whole file list in one call.
  • Substance ≠ noise. A new skills/*/SKILL.md is worth 100 cron-time edits in aeon.yml. Score accordingly. On the config side, an untouched template fork is not a "vote" — exclude it from divergence math.

Read the full file on GitHub · 615 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. 3d ago First seen · 615 lines · 45 tokens per session scan A 17249aa9122f

Subscribe to this mod's changes

fork-fleet is a skill published in the GitHub repository aeonfun/aeon (706 stars, last pushed 3d ago), licensed MIT. It adds 45 tokens to every session and 8,477 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

agent-framework-py-release

Use when cutting a Python release for the microsoft/agent-framework monorepo. Triggers on "bump py versions", "cut a python release", "prepare release PR for python", "release py packages", "bump python to X.Y.Z", or similar requests to bump Python package versions and prepare a release PR. Handles all four lifecycle…

microsoft/agent-framework · 103 tokens

foundry-hosted-agent-validation

Step-by-step process for validating a Python Foundry hosted agent sample (under python/samples/04-hosting/foundry-hosted-agents/) end to end — running it locally (native runtime and azd ai agent run) and after deploying it to an Azure AI Foundry project with azd. Use this when asked to validate a hosted agent sample.

microsoft/agent-framework · 82 tokens

python-feature-lifecycle

Guidance for package and feature lifecycle in the Agent Framework Python codebase, including stage meanings, feature-stage decorators, feature enums, and how to move APIs from one stage to the next.

microsoft/agent-framework · 43 tokens

build-and-test

How to build and test .NET projects in the Agent Framework repository. Use this when verifying or testing changes.

microsoft/agent-framework · 26 tokens

pull-requests

Guidance for creating pull requests and handling PR review comments in the Agent Framework repository. Use this when writing a PR description (filling out the PR template) or when responding to and resolving review comments on an existing PR.

microsoft/agent-framework · 49 tokens

python-code-quality

Code quality checks, linting, formatting, and type checking commands for the Agent Framework Python codebase. Use this when running checks, fixing lint errors, or troubleshooting CI failures.

microsoft/agent-framework · 40 tokens