SBSecond Brain + Multi-AgentStart
LIVE BUILD WORKSHOP

Second Brain
+ Agent Team

Obsidian keeps your knowledge. The wiki keeps it useful. Codex helps turn it into action.

Your knowledge firstAgents with clear rolesClean team handoffs
YOU
notesCodexagents
Finish line: describe one helpful agent and pass its work to the next team member.
OUTCOMES

Leave with a system you can run

Every idea becomes a structure, template, example, or team activity.

01

Organize knowledge

Build a usable note vault and trusted wiki.

02

Describe an agent

Give it a job, values, communication style, and limits.

03

Set permissions

State what it may view, change, share, or approve.

04

Pass the work

Give completed work to the next agent without repeating it.

Start with one useful pattern. Add more tools only when needed.
WHY SECOND BRAINS FAIL

A pile of notes is storage, not memory

A useful system helps the right knowledge return when you need it.

CAPTURE

Everything goes in

Nothing gets cleaned up.

MEANING

The reason is missing

Old fragments no longer make sense.

FINDING

Search is difficult

You cannot remember the exact words.

USING

Nothing comes out

Notes never become a decision or useful result.

Capture → organize → keep the best → find → use → check.
THE OPERATING STACK

Three layers, one source of truth

Each layer has a distinct job.

01 · SOURCE

Obsidian vault

Notes, projects, decisions, people, research, specs, logs.

02 · KNOWLEDGE

Karpathy-style LLM wiki

Maintained, linkable pages compiled from vault evidence.

03 · EXECUTION

Codex

Reads allowed paths, writes artifacts, runs agent loops.

Obsidian remembers. The wiki clarifies. Codex executes. Notion publishes selected outputs.
A SIMPLE SYSTEM MAP

AI is one part of a larger workspace

Think of the system like a person working at a desk. The technical names are optional.

AI BRAIN

The model

Recognizes patterns and creates responses.

WORKING DESK

Current information

What the AI can see right now.

FILING CABINET

Vault + wiki

Knowledge saved for later.

HANDS

Codex + tools

Ways to read, write, and act.

TEAM MANAGER

Coordinator

Assigns work and knows when to stop.

The AI brain needs information, tools, and clear instructions to be useful.
ARTIFACT A · VAULT MAP

Folders that reveal work state

A boring map helps humans and agents predict where truth belongs.

vault/ ├── incoming/ # fast, unprocessed capture ├── projects/ # outcomes with an end state ├── areas/ # ongoing responsibilities ├── resources/ # research and reference ├── wiki/ # durable promoted knowledge ├── agents/ # specs and access policies └── logs/ # runs, decisions, evaluations

Rules

  • Everything enters through incoming/.
  • Projects and areas hold active context.
  • Only reviewed knowledge enters wiki/.
  • Agent work stays inspectable in logs/.
Folder names are an access-control surface, not decoration.
M2–M3 · CAPTURE + AUDIT

Move notes through visible states

Low-friction capture needs a processing path.

1

Capture

Write in incoming/.

2

Atomize

One clear idea or decision.

3

Place

Project, area, or resource.

4

Promote

Compile durable wiki knowledge.

Drill: restructure 10–15 notes and create a one-page stack gap map.
THE KNOWLEDGE WIKI

Turn useful notes into trusted reference pages

The wiki is the small, tidy shelf of knowledge you expect to reuse.

Move into the wiki

  • An idea used in several projects
  • A decision and the reason behind it
  • Your current view on an important topic
  • An open question someone must answer

Leave as a regular note

  • A temporary or unverified thought
  • A quick record of one moment
  • A copy of an existing wiki page
  • Something nobody can understand yet
An agent may suggest an update. A person approves important changes.
ARTIFACT B · WIKI TEMPLATE

Five questions for durable knowledge

Expose evidence, stance, and uncertainty.

problem: What recurring question does this resolve? decision: What was decided, if anything? sources: [[vault links]] · dates · evidence quality current_stance: What do we believe/do now—and why? open_questions: - question · owner · review date
A wiki page is a maintained position with provenance—not polished prose alone.
FIND FIRST, ANSWER SECOND

Give the AI the right notes before it answers

This is often called RAG. Remember the habit, not the technical label.

1

Ask

Write a clear question.

2

Find

Search notes by meaning.

3

Choose

Keep the useful notes.

4

Answer

Use them as evidence.

5

Check

Open the source and verify.

Find evidence, answer, then check.
PLAIN-LANGUAGE TRANSLATOR

Five technical words—made simple

Use the plain meaning first. The label only helps you recognize it later.

LLM
The AI model that reads and writes language.
Context
The information the AI can see right now.
Embedding
A way for a computer to compare meaning.
Semantic search
Finding related ideas even when the words differ.
RAG
Finding useful notes before the AI answers.
Orchestration
Deciding who does what, and in what order.
You do not need the mathematics to use these workshop patterns.
AGENT PERMISSIONS

Treat an agent like a new team member

Before it starts, clearly state what it may see and change.

VIEW

May read

Named research, projects, and approved wiki pages.

DRAFT

May suggest

Prepare a change for a person to review.

CHANGE

May write

Only its output folder and activity log.

ASK FIRST

Protected work

Private notes, final decisions, deletion, publishing.

Let it read what it needs and change only what it owns.
DESIGN THE AGENT

Give it a job, values, and communication style

These three choices make behavior easier to predict.

PERSONA · THE JOB

What is it responsible for?

Role, boundaries, tools, and definition of success.

SOUL · THE VALUES

What does it protect?

Quality standards, refusal lines, and what “good” means for your team.

VOICE · THE STYLE

How should it communicate?

Tone, length, structure, and expected format.

Think: job description + team values + communication guide.
ARTIFACT C · AGENT SPEC

Copy this before writing a prompt

Bind identity, access, contracts, and stopping behavior.

name: persona: role · scope · success soul: values · refusal lines · taste voice: tone · brevity · formats allowed_vault_paths: write_permissions: tools: Codex · search · browser · Notion export input_contract: output_contract: stop_conditions: human_checkpoints:

Quality check

  • Can someone predict its behavior?
  • Can it cite what it read?
  • Is every write location named?
  • Can it stop without guessing?
  • Does a human own consequences?
Store specs in agents/; version them like policy.
ARTIFACT D1 · FILLED SPEC

Research Agent · “Scout”

Source-first investigator; never fills evidence gaps with confidence.

PERSONA

Find, evaluate, organize evidence. Success = traceable packet answering the brief.

SOUL

Values primary evidence, recency, counterexamples, uncertainty. Refuses invented citations.

VOICE

Neutral and compact: claim → evidence → confidence → unknowns.

ACCESS

Read selected projects/, resources/, wiki/. Write research folder + append logs.

TOOLS + CONTRACT

Codex, search, browser. Input: question, decision, scope, date. Output: cited packet, contradictions, risks.

STOP + HUMAN

Stop when claims have evidence or gaps are explicit. Human approves scope expansion and publishing.

ARTIFACT D2 · FILLED SPEC

Chief of Staff · “Mira”

Turns approved evidence into priorities without redoing research.

PERSONA

Produce dashboard, ranked plan, owners, decisions. Success = executable one-page brief.

SOUL

Values clarity, leverage, ownership, realistic sequence. Refuses false urgency and hidden tradeoffs.

VOICE

Calm and decisive: decision → rationale → actions → risks → asks.

ACCESS

Read frozen research + wiki. Write briefs. Export only approved summary to Notion.

TOOLS + CONTRACT

Codex, vault I/O, Notion export. Output: dashboard, ranked plan, risks/unknowns.

STOP + HUMAN

Forbidden to redo research. Human approves commitments, owners, due dates, export.

M7 · ONE AGENT LOOP

Discover → Plan → Execute → Verify → Iterate

Single-agent work is the practice ground for a team loop.

1

Discover

Read task, policy, context.

2

Plan

Steps, artifact, risks, stop.

3

Execute

Use allowed tools.

4

Verify

Test definition of done.

5

Iterate

Fix bounded gaps or escalate.

Stop conditions and checkpoints are part of the loop.
M8 · TOOLS

Tools must return inspectable results

Structured operations replace pretend actions.

CODEX

Execute

Read files, create artifacts, run checks.

SEARCH

Discover

Find external evidence.

BROWSER

Inspect

Interact with live interfaces.

NOTION

Export

Publish approved outputs only.

Every call needs inputs, expected output, failure behavior, and permission.
TEAM HANDOFF

Pass completed work, not a vague message

A handoff agreement tells the next agent what is finished and what happens next.

work_being_passed: research-packet.md finished_when: - required claims cited - contradictions and unknowns explicit - confidence stated next_agent: chief-of-staff do_not_repeat: - repeat completed searches - silently replace evidence - expand scope without approval next_agent_response: accept | return with missing item owner: accountable person
Simple test: can the next agent begin without asking “What am I supposed to do?”
COORDINATING THE TEAM

One manager. Clear specialists. Visible work.

The team needs one place where responsibility and progress are obvious.

MANAGERbreaks down work · assigns · checks · stops
Researcher
Summary writer
Executor
Reviewer
WORK BEING PASSEDnamed file + status + evidence + next owner
If one agent can finish the task well, do not add a team yet.
WORKED PIPELINE 1

Research → Dashboard + Action Plan

Evidence becomes an executive artifact without being researched twice.

SCOUT

Research

Cited packet, contradictions, confidence, unknowns.

→ research-packet.md →
MIRA

Synthesis

Rank choices against goal and constraints.

→ decision-brief.md →
OUTPUT

Dashboard

One page, actions, risks, unknowns, owners.

Research owns evidence. Synthesis owns prioritization. A human owns commitments.
ARTIFACT F · PIPELINE 1 OUTPUT

One page that drives a decision

Separate facts, priorities, uncertainty, and action.

DECISIONChoose the smallest pilot with reversible risk.
SIGNALConfidence: medium

3 primary sources · 2 assumptions

RANKED PLAN
  1. Validate highest-risk assumption
  2. Run bounded pilot
  3. Review and scale/stop
RISKS / UNKNOWNS
  • Ownership after pilot
  • Cost at scale
  • Missing user evidence
Every action links to evidence, an owner, and a decision point.
WORKED PIPELINE 2

Research → Notion summary + next actions

Use Notion for shared visibility, not competing truth.

VAULT

Research artifact

Evidence, citations, confidence, unknowns.

SYNTHESIS

Approved summary

Concise, audience-safe output.

NOTION

Coordination state

Summary + owner + due date + vault link.

Next actionOwnerDueVault link
Validate assumptionProject lead2026-09-03[[projects/pilot/research]]
Draft pilot planOps lead2026-09-05[[projects/pilot/plan]]
If the decision changes, update the vault first—then re-export.
WORKED PIPELINE 3

Librarian → Executor → Reviewer

Maintenance, execution, and quality control stay separate.

LIBRARIAN

Propose wiki diff

Find stale stances, duplicates, missing links.

CODEX

Apply approved work

Edit allowed paths and log the run.

REVIEWER

Verify

Check provenance, scope, links, unintended changes.

No role approves its own consequential change.
EVALUATION

Measure the wiki, agent, and handoff

Make failures visible at the layer that caused them.

WIKI
  • Sources traceable
  • Stance dated
  • Duplicates/stale pages
  • Useful retrieval
AGENT
  • Access compliance
  • Task completion
  • Unsupported claims
  • Correct stop
HANDOFF
  • Acceptance rate
  • Redo avoided
  • Fields complete
  • Owner clear
Log failure, likely layer, fix, and next test in logs/.
ARTIFACT H · FAILURE CATALOG

Recognize the failure before scaling it

Fix architecture and contracts before rewriting prompts.

Ignores vault

Hallucinates.

Require retrieval + citations.
Wiki junk drawer

Everything promoted.

Criteria, owner, review date.
No soul

Generic slop.

Values, refusal, taste.
Ping-pong

No owner.

Manager, baton, turn budget.
Notion becomes brain

Truth diverges.

Vault-first, linked export.
Each failure needs a detection signal and a guardrail.
ARTIFACT I1 · 20–30 MIN LAB

Specify one agent and run one handoff

Use a real project and a small existing research note.

  1. 0–5Choose task, upstream artifact, destination.
  2. 5–12Fill identity, access, contracts, stops.
  3. 12–17Write handoff and forbidden redo.
  4. 17–23Run or role-play next agent.
  5. 23–25Log one failure and one spec change.
Done = another person can accept or return the artifact predictably.
ARTIFACT I2 · 60–90 MIN LAB

Build Research → Synthesis → destination

Complete one thin pipeline with real vault evidence.

0–15

Prepare

Task, access, specs.

15–35

Research

Cited packet.

35–55

Handoff

Accept/return, synthesize.

55–70

Verify

Evidence, access, ownership.

70–75+

Improve

Revise and rerun one step.

Stretch: add a reviewer. Do not add agents until the baton works.
M6 + M11 + M12 · CAPSTONE

Personal memory → accountable team action

Read the vault, retrieve the wiki, coordinate specialists, write back under policy.

ObsidianWiki retrievalResearchSynthesisDashboard / NotionReview + write-back
Demo: task → retrieval → handoff → output → verification → improvement.
CHEAT SHEET

The complete pattern

Use this sequence for any agent workflow.

1 · MEMORY

Paths + promotion + retrieval

2 · IDENTITY

Persona + soul + voice

3 · ACCESS

Read + propose + write + ask

4 · LOOP

Discover + plan + execute + verify

5 · HANDOFF

Artifact + done + forbidden redo

6 · EVALUATE

Wiki + agent + handoff metrics

Obsidian is truth. Wiki is maintained knowledge. Codex executes. Notion receives outputs.
FINAL TEAM PRESENTATION

Show the journey, not only the final answer

Each team presents the topic they selected and how their system supports the work.

1 · TOPIC

What did you choose?

Who has the problem, and why does it matter?

2 · SECOND BRAIN

What must be remembered?

Show the vault structure and one useful wiki page.

3 · FIRST AGENT

Who starts the work?

Explain its job, values, style, permissions, and result.

4 · AGENT TEAM

How is work divided?

Show the specialists, work passed, and human approval points.

5 · RESULT

What did the system produce?

Demonstrate the result or walk through a realistic example.

6 · LEARNING

What would you change?

Name one success, one difficulty, and the next improvement.

Format: 5-minute team presentation + 2-minute questions and feedback.