HeyBrain Editorial Team
Editorial · AI-assisted — AI-assisted articles about practical AI knowledge workflows. Examples, methods and limitations are disclosed in each article.
Does the source support it?
Check the claim. Then the citation.
Your AI cited a company document. Does it support the answer?
Guides
Should this pilot grow?
Evidence before expansion.
AI pilot evaluation: count the work after the draft
Guides
When AI answers disagree
Compare the evidence first.
Inconsistent AI answers: compare the inputs before changing the prompt
Guides
Context engineering
From source records to a finished draft.
Context engineering: a complete AI briefing, from sources to draft
Guides
Introducing HeyBrain
The original HeyBrain launch
Introducing HeyBrain: the launch announcement
Announcements
What is agent knowledge
Which facts reach the model
What Is Agent Knowledge? How AI Agents Know What They Know
AI Agents
What is verifiable AI
Event, evidence, assumptions
What is verifiable AI? What the evidence can actually prove
Research
Reading and acting are separate boundaries
Trace the information through both
AI agent security: control what it reads and where it goes
AI AgentsObsidian alternatives for teams
Pick for the work you do
The Best Obsidian Alternatives for Teams in 2026, Honestly Compared
Compare
Explainable vs verifiable
Two different questions
Explainable AI vs Verifiable AI: Two Different Promises
Compare
An AI brain for agents
Context plus the authority to fetch it
Choosing an AI brain for agents: compare the job first
Compare
Context for coding agents
Repository rules and shared project facts
Choosing an AI brain for developers: repository context or shared memory?
Compare
Knowledge vs memory
Two things one engine stores
Agent Knowledge vs Agent Memory: What's the Difference and Why It Matters
CompareAgent knowledge governance
What agents should and shouldn’t know
Agent Knowledge Governance: Deciding What Your AI Agents Should and Shouldn't Know
AI AgentsVerifiable AI for Enterprise
Security and audit trails
Verifiable AI for Enterprise: Why "Trust Us" Doesn't Pass Security Review
ResearchPrompt injection
Agent attack surfaces
Prompt Injection Through Company Documents: When Agent Knowledge Becomes the Attack Surface
AI AgentsObsidian Alternatives
Local notes, workspace or company sources
Obsidian Alternatives Your AI Agents Can Actually Query
Compare
The company knowledge base
What AI changes, and what it does not
What is a company knowledge base, and what does AI change?
GuidesPermission-aware search
Compare the actual access path
Permission-aware AI search: compare the implementation, not the label
ComparePlan the access rollout
Sources, owners and acceptance
Plan an AI access rollout: from source inventory to owner handoff
GuidesThe pre-launch review
Evidence, scope and a decision
AI on company data: a six-part pre-launch review
GuidesAI data security
Trace the route, choose the control
AI data security: four places company knowledge can escape
ResearchGoverning AI access
Four decisions leaders own
AI access governance: four decisions leaders need to own
ResearchThe enterprise requirements
Establish what the actual system does
Enterprise AI knowledge systems: five requirements to establish
GuidesFrom personal to shared knowledge
Keep the habit; establish the responsibilities
From personal notes to team knowledge: what actually needs to change
GuidesCompany AI tools
Shortlist by sources and operating model
AI brain tools for companies: build a shortlist around your sources
CompareChoose an AI brain tool
Evaluate one real workflow
How to choose an AI brain tool: seven questions to demonstrate
Guides
Ask for the evidence
Ten checks before your pilot
AI knowledge base security checklist: leave with a decision
Guides
What should an agent remember?
Review a proposed memory before reuse
A second brain for AI agents: decide which memories to accept
AI AgentsDoes your agent need memory?
Start with what must survive
Do AI agents need a second brain? Start with what must survive
AI Agents
Keep the decision and the reason
A shared record people can maintain
Build a company second brain around decisions people reuse
GuidesAI for Obsidian
Vault access and model context
AI for Obsidian: check the boundary between your vault and a model
Compare
Your AI second brain
Keep the source. Check the answer.
AI second brain: a three-note workflow for your next draft
GuidesSecond-brain apps
Choose the moment of reuse
Second-brain apps: choose the workflow you will actually reuse
CompareSet up shared AI context
Start with one small pilot
Setting up AI memory: plan one capture-and-recall path
GuidesClaude Code memory
Verify the actual read path
Claude Code persistent memory: choose a route and verify the read
GuidesAgent memory layers compared
Choose by the memory job
Agent memory layers compared: Mem0, Zep, Letta, Cognee and LangMem
CompareWhat is an AI brain?
From company sources to an answer
What is an AI brain? Follow the source to the answer
GuidesDesign the first useful answer
Source, identity, retrieval and updates
How to build shared company knowledge for AI
GuidesChoose for the work and the readers
Personal notes and shared references can coexist
AI brain vs second-brain tools: choose for the work and the readers
CompareWho sees what
Identity, permissions and retrieval
How AI knowledge access works: identity, permissions and retrieval
ResearchWhat is an agentic brain?
A practical map of the parts
What is an agentic brain? A practical map of the parts
AI AgentsTranslate the AI labels
Model, context, memory, retrieval and tools
AI brain, agent brain and AI mind: translate the labels into components
Guides
Test the access boundary
Company knowledge, with evidence
AI knowledge access: a five-check permission test
GuidesAn AI agent’s decision
From request to confirmed result
AI agent brain: follow one decision from request to result
AI AgentsYC’s company-brain thesis
From scattered know-how to usable instructions
YC’s company-brain thesis: turn know-how into usable instructions
ResearchAssess the capabilities
Five dimensions, one next repair
Company knowledge maturity: assess five capabilities, not five tools
ResearchWhere knowledge gets lost
Capture the missing answer; find the existing one
Institutional knowledge loss: separate missing answers from hard-to-find ones
ResearchRule and receipt
One request, four separate claims
Governed vs verifiable AI: check the rule and the receipt
ResearchAudit anchoring
Integrity has a defined boundary
On-chain audit anchoring: what a hash can prove
ResearchC2PA credentials
What the evidence actually says
C2PA content provenance: what a valid credential tells you
ResearchShared agent memory
Handle conflicting updates
Shared memory for multi-agent teams: handle a conflicting update
AI AgentsA knowledge base through MCP
Trace a search back to its source
A knowledge base through MCP: trace one search from request to source
Guides
Notion in HeyBrain
Import a page. Check the answer.
Use Notion pages in HeyBrain: connect, import and check your first answer
GuidesChatGPT and company knowledge
Choose the right source route
Give ChatGPT company knowledge: choose the right source route
GuidesA second brain for teams
Start with the shared work
Choosing an AI second brain for a team: start with the shared work
CompareAI knowledge management
Improve one answer path
AI knowledge management in 2026: improve one answer path first
ResearchAccountable AI memory
What your evidence actually proves
Accountable AI memory: what your evidence actually proves
Research
