hyperbrief

hyperbrief is a skill for Claude Code, Codex from SoliEstre/EstreGenesis. It costs 350 tokens per session (8,993 once invoked), scanned A, original, Apache-2.0.

A tool for producing structured decision briefs as JSON data. Different brief sizes are used depending on how much analysis the request needs.

In plain words
What is it for?
Use it to create short, full, deep, or minimal briefs after a trigger check has selected the appropriate level.
Why use it?
It keeps decision information in one structured format so other tools can turn it into documents without the sections drifting apart.

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the hyperbrief plugin — 3 skills 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 skills/soliestre/estregenesis/hyperbrief
Any agent
npx skills add SoliEstre/EstreGenesis --skill hyperbrief
Clone the repo
git clone --depth 1 https://github.com/SoliEstre/EstreGenesis

Made for: Claude Code, Codex.

Or install hyperbrief, the plugin that ships this one along with the rest of its 3 skills.

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 hyperbrief

README.md
[![agentmods](https://agentmods.dev/badge/skills/soliestre/estregenesis/hyperbrief.svg)](https://agentmods.dev/skills/soliestre/estregenesis/hyperbrief)
Your own site
<a href="https://agentmods.dev/skills/soliestre/estregenesis/hyperbrief"><img src="https://agentmods.dev/badge/skills/soliestre/estregenesis/hyperbrief.svg" alt="Measured on agentmods" height="20"></a>
Per session 350 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,993 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 $0.00350 $0.08993
Opus 5 $0.00175 $0.04496
Sonnet 5 $0.00070 $0.01799
Haiku 4.5 $0.00035 $0.00899

Measured 5d ago against content hash 250f5f192277, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

hyperbrief 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 5d 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/hyperbrief/skills/hyperbrief/SKILL.md · 377 lines

How it starts

The opening of the file, as written. The whole thing — 377 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hyperbrief — 8-section decision brief generation

You are about to produce a Hyperbrief because hyperbrief-trigger-check returned FULL_HYPERBRIEF, SUMMARY_BRIEF (v0.8 — the default floor, §0.5 below), DEEP_BRIEF (v0.9 — request-only, §0.6 below), or MINIMAL_BRIEF (Cynefin chaotic). Read the verdict first and take the matching pipeline — §0 for a full brief, §0.5 for a summary, §0.6 for a deep brief. Running the 9-section pipeline on a SUMMARY_BRIEF verdict is not a safe over-delivery: the tier exists because a brief cheap enough to always emit is what closes the gap, and spending full-brief cost on every decision is the alert-fatigue failure §2.4 guards against.

Core invariant: you emit JSON IR only. The renderers (or the templates as fallback) produce MD and HTML. Do NOT write MD or HTML directly — it causes representation drift and turns the 8 sections into markdown cosplay.

v0.6 compatibility note: This skill targets schema v0.6 (4 additive optional slots: evaluation_lenses, recommended_methodology, maturity_anchor, term_pairing). v0.5.6 callers/IRs remain valid — every v0.6 slot is optional. Omit any slot whose trigger condition (see §1.v06) does not fire.

0. Generation pipeline (staged, NOT single-shot)

1. compute escalation 4-score + classify reversibility, Cynefin domain, RAPID roles → §0
2. draft §1 (context horizon) + §6 (decision prompt)        ← frame the question first
3. draft §2 (blast radius) + §3 (incremental path) + §4 (why blocks)
4. draft §5 (consequences — heaviest section: 7 sub-blocks)
5. draft §7 (decision tree — meta-branch + 3 root nodes + Cynefin-adaptive format)
6. derive §8 (recommendation) as a FUNCTION of §7 — cite ≥ 1 node ID
7. self-critique: name 3 omissions → patch IR
8. validate IR against schema/hyperbrief.schema.json
9. render → emit Constellation DECISION_REQUEST + HyperbriefCard pair
10. register §9 Decision Capture (revisit_date + ledger_pointer)

Single-shot 8-section generation is discouraged — sections downstream of §5 collapse to hand-waving when the LLM holds all 8 in working memory simultaneously.

Read the full file on GitHub · 377 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. 5d ago First seen · 377 lines · 350 tokens per session scan A 250f5f192277

Subscribe to this mod's changes

hyperbrief is a skill published in the GitHub repository SoliEstre/EstreGenesis (8 stars, last pushed today), licensed Apache-2.0. It adds 350 tokens to every session and 8,993 once invoked, about $0.0018 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.

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