PB
Professional Brain
🟡 Experimental🕐 updated 2026-06-22
🔷 SkillSpec L3
⚙ ships an executable helper
pm-cross
Maintain a durable, local markdown memory ('brain') of your product context, decisions, hypotheses, and stakeholders that other skills read from and write back to. Use when asked to set up a brain, ingest notes/artifacts into memory, recall what's known about a topic, log a decision with provenance, or run a weekly brain review. Produces a structured brain/ folder (knowledge, decisions, hypotheses, stakeholders, entities, source) with provenance-tagged facts, plus ingest/recall/record/review operations with approval-gated, append-only write-back.
What to give it
▸Which operation — `init`, `ingest`, `recall`, or `review` (default: infer from the ask).
▸ingest — For : the artifact (a pasted note, a file path, a transcript) and what it's about.
▸recall — For : the topic or question to answer from memory.
▸brain location — The — default `./brain/` at the project root.
✅ 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.
✓Every extracted claim carries a provenance tag
✓The verbatim original is saved in `source/` before synthesis
✓Recall answers cite the file + tag for each fact, and flag thin memory instead of inventing
✓Decisions record the rejected alternatives and a `reopen-when` condition
✓`[hunch]`/`[verbal]` facts are never presented with the confidence of `[data]`/`[interview]`
⚠️ What it refuses to do
Do not paraphrase a source into the durable layer without keeping the original in `source/` — the audit trail is the point
Do not drop provenance tags when reusing a fact — an untagged claim is an unfalsifiable one
Do not answer a recall from general knowledge and present it as something the brain "knows" — say when memory is empty
Do not overwrite a decision when it changes — append a new dated entry so the history survives
Do not build a vector database or hide memory behind embeddings — the brain stays plain, grep-able markdown a human can read and correct
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 pm-claude-skills-mcpStart 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="professional-brain"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>💬 Discussion
Professional Brain is one of 630 open-source professional AI agent skills — all SkillSpec L3.
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