The context layer for the web

Give your AI a
memory.

Your team already reads, highlights, and decides all over the web. Kontxt captures that context, keeps it organized and permissioned, and serves it to any AI — so every answer starts from what you know.

Free for individualsOne line to deployNever trains anyone else’s model

Animated illustration: a sentence on a web page is selected, highlighted with Kontxt, saved as a memory, and an AI chat answers a question by citing that highlight.

1line of JavaScript to deploy
3surfaces — web, app & API
works on any page you read
0of your data trains other models
Trusted by teams atCornellStanfordMichigan+ Fortune Global 500 companies
What you get

Everything you capture becomes memory.

Not another notes app — a layer over the pages you already read, and an API under the AI you already use.

Highlights & notes

Mark up any page — articles, docs, dashboards — and it’s saved forever.

Contexts with permissions

Layer data on a page and share it like a Google Doc — viewer by viewer.

Folders & groups

Organize by project or team; pipe a whole folder into a chat as context.

Share pages that track

Publish branded views of anything you capture — with view analytics built in.

Chat with Memory

Ask on the page or in the app — answers draw on everything you’ve saved.

MCP for every agent

Claude, ChatGPT, your own agents — one endpoint, your permissions enforced.

How it works

Capture. Share. Connect.

01

Capture on any page

Highlight, tag, comment — or ask AI — right where you read. One line of JavaScript, a bookmarklet, or the extension.

02

Share with real permissions

Contexts work like Google Docs: private by default, shared person-by-person or team-by-team, revocable any time.

03

Connect any AI

Chatbots, copilots, and agents pull ranked, permission-scoped context over MCP — the same memory on every surface.

For developers

One call. Every agent gets your team’s memory.

Retrieval is ranked, hybrid (semantic + structured + lexical), and scoped by the same ACLs that guard the app. Nothing a user can’t see ever leaves the API.

native MCPranked retrievalpermission-scopedno SDK required
api.kontxt.io/mcp
REQUESTPOST /mcp
Authorization: Bearer <token>

{ "tool": "get_memory_blocks",
  "query": "what drove Q3 churn?" }
RESPONSE · RANKED · ACL-FILTERED
churn-postmortem.acme.com
highlight · shared: revenue-team
Q3 board notes — pricing
document · folder: strategy
only what this user & their teams can see
Built for enterprise

Share knowledge. Keep control.

Permissions that travel

One access model enforced everywhere — the web app, the on-page overlay, and the API. Grant it once, it holds on every surface.

Private by default

Nothing is public unless you make it public. Your data never trains a model you don’t control, and deleting means deleted.

Provenance you can audit

See what knowledge gets read, shared, and used — per page, per team — so you can watch context turn into value.

Our analysts stopped re-explaining the same research to every tool. The AI finally answers from what the team already learned — with the receipts to prove it.

RLResearch lead · Fortune Global 500

Stop re-explaining your world to every AI.

Set up in minutes. Your first memory is one highlight away.

Free for individuals · No credit card · One line to deploy

AI