Tier

For

Price

What it includes

Core

Developers & AI agents

€0, open source, forever

This repository: the memory engine, encryption, hybrid search, MCP, HTTP API, Python client, CLI, browser UI with a read-only knowledge graph, ChatGPT import

Pro

Individuals & power users

€12/month or €120/year, self-serve in the app

The desktop experience on the same engine: knowledge graph, chat with your memory, dossiers, Today, privacy shield, imports, device sync

Enterprise

Teams, practices & organizations

By agreement

Everything in Pro, plus team memory (shared knowledge, workspaces, roles, admin console), SSO, central policies, MDM/air-gapped deployment, security documentation and support

Today — what changed since your last visit, and what needs a look

Activity — which AI app reads and writes what, live

Privacy shield — what a cloud AI would get to see

The knowledge graph — every note a node, every link an edge

Feature

KEPTA Core

KEPTA Pro

Security & privacy

Encrypted at rest — SQLCipher 4, AES-256 and an HMAC-SHA512 over every page, the WAL included

✅

✅

The key is created and kept in the OS keychain automatically — nothing to type, agents never see it

✅

✅

Recovery key in one click, ready for your password manager

✅

✅

Settings — the AI key included — live inside the encrypted file

✅

✅

Loopback only (127.0.0.1), no account, no telemetry — nothing leaves your machine unless you pick a cloud AI

✅

✅

Rate limiting, Helmet and input validation on every route

✅

✅

Hardened desktop shell — no Node in the window, sandbox, Content Security Policy

—

✅

Notes

Create, edit, delete — trash with restore

✅

✅

Four kinds of knowledge — fact, event, how-to, document — assigned by readable rules that state their reason

✅

✅

Sort existing notes by kind afterwards, with a preview first

✅

✅

Tags, confidence 0–1, automatically extracted entities

✅

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Scopes — user, agent, session — so a memory knows whom it belongs to

API · MCP

API · MCP

Validity windows — expired notes are marked, never quietly hidden

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✅

Supersede chains — a new fact displaces the old one, the history stays

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✅

Migration from the old memories.json — idempotent, with a backup

✅

✅

Search

Hybrid retrieval — BM25 full text + vectors + entities, fused with Reciprocal Rank Fusion

✅

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Local reranking — term coverage, phrases, title, tags; no network

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Relevance first — results ranked, the best hit on top

✅

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Time-travel search — what was known at any moment (asOf)

API · MCP

API · MCP

Persistent embeddings via Ollama, computed by a background queue

✅

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Temporal weighting — expired ×0.5, superseded ×0.4

✅

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Stopwords in German and English

✅

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Semantic search switch and a result slider from 5 to all

—

✅

One code path for interface, HTTP API and MCP — agents get the quality you get

✅

✅

Retrieval eval — npm run eval measures Hit@1, Precision@5 and MRR

✅

✅

Capture & import

Drag & drop files — PDF with the character maps of embedded fonts, Markdown, text, JSON — chunked

—

✅

Inbox folder, watched and imported automatically

API

✅

Obsidian vault import — frontmatter kept, [[wiki links]] become graph edges

API

✅

JSON import of whole note sets

API

✅

Re-read files imported with an older extraction — counts first, writes after you confirm

API

✅

URL clipper — SSRF-protected, strips navigation lines and cookie banners

—

✅

Scan this computer — opt-in, preview first; keys, credentials, browser profiles and wallets stay blocked

—

✅

Auto-learn — save the key point of a chat answer (off by default)

—

✅

Markdown export to a folder

API

✅

Device Sync — move a scope between your own devices as an AES-256-GCM bundle, with a hash-chained ledger

API

✅

Knowledge graph

Entities and relations from [[wiki links]] and automatic extraction

API · MCP

✅

Read-only knowledge graph — notes as nodes, [[links]] as edges (solid), similar notes connected (dashed), drag and click

✅

—

Terminal experience — remember, recall, timeline, contradict, stats on the encrypted database

✅

✅ (desktop app)

Interactive graph with two views — Force (physics) and Tree (dendrogram); nodes glide between them

—

✅

Unbounded canvas — 3 000 nodes and 9 500 edges at 60 fps; zoom, pan, drag, fit-to-view

—

✅

Time slider — the graph as it stood on any day

—

✅

Colour by kind, size by connections, real links told apart from mere similarity; double-click opens the note

—

✅

Maintenance

Duplicate detection — embedding similarity ≥ 0.92, lexical fallback without Ollama

MCP

✅

Consolidation supersedes instead of deleting — nothing is lost

MCP

✅

Duplicate review — groups side by side, keep the richest copy in one click, one undo for the batch

—

✅

Episodic memories grow out of chat history

—

✅

Activity feed

✅ live, with the name of the AI app

✅

Agents (MCP)

MCP 2026-07-28, compatible with 2025-06-18 and 2024-11-05 — stdio and Streamable HTTP

✅

✅

Eight tools — search, save, update, delete, list, graph, consolidate, forget — with outputSchema and structuredContent

✅

✅

Write gate (opt-in) — a local LLM decides ADD, UPDATE, DELETE or NOOP before a new memory is stored

✅

✅

npm package kepta-mcp, listed in the official MCP registry

✅

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Connect Claude Desktop, Claude Code, Cursor, Windsurf, VS Code, Gemini CLI, Cline and Roo Code in one step — npx kepta-mcp setup or one click

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MCP block to copy

Python client — pip install kepta, standard library only

✅

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Chat cockpit

20 provider presets — Ollama, LM Studio, OpenAI, Anthropic, Gemini, Mistral, Groq, DeepSeek, xAI and more

—

✅

Model discovery for Ollama and LM Studio in one click

—

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Streaming with a stop button, Markdown rendering

—

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Source citations — every answer shows which memories it used

—

✅

Date-aware prompting and a visible token budget

—

✅

Interface

An interface for your memory — browse by kind and tag, search, read, write, trash

✅ in your browser

✅ native app

Native desktop app for macOS, Windows and Linux

—

✅

Light and dark

✅

✅

Keyboard first — shortcuts; in Pro also a command palette (⌘K)

✅

✅

Tag filter with counts

✅

✅

Knowledge list with readable titles and previews

✅

✅

Source chips, part badges, Open file, grouping by file, kind or period

—

✅

Focus mode and text size (100 / 115 / 130 %)

—

✅

Setup assistant with a starter pack

—

✅

System status — detects local AI, checks storage, shows diagnostics

—

✅

Price

License

free · AGPL-3.0

proprietary · free plan with daily limits, Pro removes them

🔍 Hybrid search

BM25 full text + vector similarity (Ollama) + knowledge graph, fused with RRF, with local reranking

🔐 Encrypted at rest

SQLCipher 4: AES-256 and an HMAC-SHA512 over every page, the WAL included; the key lives in the OS keychain (macOS Keychain, Windows DPAPI, Linux Secret Service)

🕐 Time travel

Validity windows (valid_from / valid_to) and asOf queries — "what did I know on 3 March?"

♻️ Superseded, not contradicted

New facts replace old ones (superseded_by); the history stays

🔗 MCP first

8 tools, one code path for the API and MCP — agents get the same quality as the app

📄 File import

PDF (pdf.js with character maps), Markdown with [[wiki links]], text, JSON

📊 Eval

npm run eval on a fixed corpus of 58 notes / 45 queries: Hit@1, Precision@5, MRR, plus an ablation test per retrieval leg

Area

Routes

Memories

GET/POST /api/memories, GET /api/memories/:id, POST /api/memory, DELETE /api/memories/:id, POST /api/memories/:id/restore, POST /api/memories/bulk-delete, POST /api/memories/bulk-restore, POST /api/memories/reclassify

Search

GET /api/memories/search, POST /api/search

Import / export

POST /api/import/markdown, POST /api/export/markdown

Encryption & repair

GET /api/health (including the encryption status), POST /api/repair/imports

MCP

POST /mcp, GET /mcp, GET /api/mcp/tools, POST /api/mcp/search, POST /api/mcp/save

System

GET /api/settings, PUT /api/settings, GET /api/storage-info, GET /api/activity

Area

Lines

Functions

Branches

Statements

everything together

70 %

72 %

56 %

66 %

src/core

87 %

89 %

74 %

85 %