What do I need to use Delta Briefing?

The brief's subject and audience; The previous edition or state record; Current sources; Where state lives.

Is Delta Briefing free to use?

Yes — run it free in the browser playground (no API key needed for the sponsored trial, or bring any provider key), or install it into Claude Code, Cursor, ChatGPT and more via npx pm-claude-skills. MIT-licensed and open source.

Delta Briefing

Q: How do I know the Delta Briefing output is good?

The skill verifies itself against its own quality checks: The brief opens with the delta, not with background the audience read last time; Every "Changed" item shows both the old and the new value; Removals were checked by re-observing, not just re-confirming last edition's list; A state record exists at the end, complete enough that the next run needs no other memory.

🔵 Stable🕐 updated 2026-10-23 ✅ 4.8/5 🔷 SkillSpec L3 pm-autopilot

Make a recurring brief report what changed since the last edition instead of restating everything. Use when a weekly or monthly report keeps repeating itself, when setting up a scheduled monitor or digest, or when asked to make a recurring update delta-aware. Produces a changes-first brief plus the state record the next run will diff against.

▶ Run it free — no key needed 📝 Grade your existing draft ⬇ Add to Claude (works in Duet) 📱 Use as an app View SKILL.md ↗ What changed

🗣 Say this to your agent

“Our weekly report keeps repeating itself.”“Only tell me what changed since last week.”“Set up a scheduled monitor.”“Make this recurring update delta-aware.”

What to give it

▸The brief's subject and audience — competitive landscape, product metrics, account health…

▸The previous edition or state record — if none exists, this run is the baseline: say so in the output and produce the first state record

▸Current sources — for this cycle

▸Where state lives — between runs (a file next to the brief, a Brain folder — see BRAIN.md if using this library's memory)

✅ The bar it holds itself to

Every skill in this library self-verifies — these are this skill's own quality checks, straight from its definition.

✓The brief opens with the delta, not with background the audience read last time

✓Every "Changed" item shows both the old and the new value

✓Removals were checked by re-observing, not just re-confirming last edition's list

✓A state record exists at the end, complete enough that the next run needs no other memory

✓The baseline edition (no previous state) is labelled as a baseline, not presented as a delta

⚠️ What it refuses to do

Do not restate unchanged items at full length — one line in "Still watching" or nothing

Do not fabricate a delta to make a quiet cycle look productive — "nothing changed" is a valid, valuable edition

Do not diff against memory or vibes — only against the stored state record

Do not let the state record and the brief disagree — the record is written from the brief's facts

Do not track everything forever — items resolved two editions ago leave the state record

Install

npx pm-claude-skills add --agent claude   # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y -p pm-claude-skills pm-claude-skills-mcp

Start with

Related skills

🔌 Embed this skill

Drop this on your blog, docs, or site — it renders a "Run this skill" card:

<div data-pm-skill="delta-briefing"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>

💬 Discussion

Delta Briefing is one of 1326 open-source professional AI agent skills — all SkillSpec L3. Try them all in the browser · ⭐ Star on GitHub · Browse the full catalog