CandleKeep
Now on Claude Code Marketplace

Give your AI agents a library they can actually read.

Subscribe a book from the marketplace, upload your own docs, or let your agent write what it learns — your agents cite every answer by page, not by vibes.

CandleKeep
$ claude
Building a component library...
Try a question
curl -fsSL https://getcandlekeep.com/install.sh | sh

Installs, authenticates, and connects your agents.

For developers building with Claude Code, Cursor, or Codex.

Free forever tier · No credit card · One command to install

CandleKeep is a library your AI agents read while they work — they open a book, find the page, and cite it.

Not RAG

No vector search. Agents read pages directly, like a person reading a book — and cite them.

Not a bookmark manager

Books are structured into pages and tables of contents so agents can actually read them.

Not knowledge management

It's a library of outside expertise for your agent, not an internal wiki to govern.

Built for
  • Claude Code
  • Cursor
  • Codex

Your Agent Reads Books Like You Do

No vector databases. No RAG pipelines. Your agent checks the table of contents, picks the right chapter, and reads the relevant pages.

UploadPDFs, EPUBs, Markdown
ProcessPages extracted & indexed
Agent asks"What does Chapter 7 say about..."
Browses libraryTOC → chapter → pages
Cited answerSource, page number, direct quote
01

Install Once, Works Automatically

One command installs CandleKeep. Your agent detects research questions automatically — no manual references, no configuration per conversation.

02

Browsing, Not Searching

Your agent reads like a developer explores a codebase. Table of contents first, then relevant chapters, then specific pages. No keyword search. No vector similarity. Actual reading.

03

Cited Facts, Not Confident Guesses

Training data is like remembering a book you read 3 years ago. CandleKeep is like having it open on your desk. Every answer includes the source and page number.

Manuscripts

Your agent doesn't just read — it writes

Define a knowledge area. Your agent proposes additions from every coding session. Over time, it builds a structured book from your real experience.

Debugging Patterns
Active

Topics: race conditions · async · deadlocks

Chapters written by your agent:

  • The Race Condition Playbook
  • Async Error Propagation
  • Deadlock Detection Heuristics
  • When to Use Mutexes vs Channels
  • · · · 8 more chapters

Built from 47 coding sessions

You write nothing

Define topics and criteria. Your agent handles the rest.

Every session adds up

Knowledge accumulates automatically from your real work.

Who it's for

Find yourself here

However you build with AI, CandleKeep gives your agents the knowledge they were missing.

Solo AI builders

This is you if… You build agents, tools, MCP servers, or skills in Claude Code, Cursor, or Codex.

Inject the domain knowledge your agent's training data doesn't have.

Non-coders building with agents

This is you if… You're shipping with AI without a deep background in the domain.

Hand your agent the right book and it instantly works like a specialist.

Teams · coming soon

Engineering & AI teams

This is you if… Your team runs many agents that all start from zero.

Give every agent the same curated, cited knowledge — and let them write back what they learn.

Works With Your Stack

CandleKeep integrates with the agents and platforms you already use.

Platforms & Interfaces

macOS
LinuxLinux
Web App
CLI
MCP Server
Marketplace

Curated knowledge libraries any AI agent can pull from on demand — web security, design, product strategy, and more.

View Web Application Security for AI Agents
Web Application Security for AI Agents
Pro Library

Web Application Security for AI Agents

Agent-optimized webapp security reference

securityagents+2
29339 pages
View Inside Claude Code: The Architecture
Anthropic
Pro Library

Inside Claude Code: The Architecture

An architectural analysis of Claude Code -- the internal agent schema, built-in agents, coordinator system, hooks, memory, and token-optimization decisions. Written from source analysis, in our own words.

claude-codeagents+1
2881 page
View Building Your Agent Team: A Practitioner's Guide to Multi-Agent AI Systems
Pro Library

Building Your Agent Team: A Practitioner's Guide to Multi-Agent AI Systems

A 20,000-word, 12-chapter technical book by Sahar Carmel about building multi-agent AI systems. Covers architecture, memory systems, knowledge systems (books over RAG), inter-agent communication, security, deployment, and development workflows.

agentsbest-practices+2
24215 pages
View UI/UX Design Principles for AI Agents
UI/UX Design Principles for AI Agents
Pro Library

UI/UX Design Principles for AI Agents

A comprehensive reference manual for AI agents building web and mobile interfaces. 15 self-contained chapters covering visual hierarchy, typography, color systems, spacing, component patterns, navigation, cognitive load, behavioral triggers, persuasion, form design, responsive design, accessibility, and anti-patterns. Synthesized from 10 foundational UI/UX books (Refactoring UI, Don't Make Me Think, Laws of UX, 100 Things Every Designer, Hooked, Influence) into 170+ concrete, actionable rules with specific thresholds, values, and anti-patterns. Each rule uses When/Do/Values/Don't format for direct agent application.

uiux+2
21415 pages
View The Complete Guide to Building Skills for Claude
Anthropic

The Complete Guide to Building Skills for Claude

by CandleKeep

A comprehensive guide covering skill structure, SKILL.md writing, progressive disclosure, examples, and best practices for building Claude Code skills.

skillclaude-code+4
12716 pages
View Writing Effective Tools for Agents
Anthropic

Writing Effective Tools for Agents

by Ken Aizawa, Barry Zhang, Zachary Witten, Daniel Jiang, Sami Al-Sheikh, Matt Bell, Maggie Vo, Theodora Chu, John Welsh, David Soria Parra, Adam Jones, Santiago Seira, Molly Vorwerck, Drew Roper, Christian Ryan, Alexander Bricken

A comprehensive guide from Anthropic Engineering on building effective tools for AI agents, covering a three-phase methodology of prototyping, evaluation, and optimization. Covers tool design principles including search over listing, consolidation, namespacing, response design, token efficiency, error handling, and description engineering for optimal agent performance.

toolsbest-practices+1
1271 page

Not Another RAG Tool

You've seen knowledge tools before. Here's why CandleKeep isn't one of them.

vs NotebookLM

NotebookLM helps humans talk to docs.

vs

CandleKeep

CandleKeep helps AI agents read books while they work.

vs DIY RAG

Stop building pipelines.

vs

CandleKeep

Install a book in one command.

vs CLAUDE.md / Context

CLAUDE.md tells your agent what to do.

vs

CandleKeep

CandleKeep teaches it what to know.

vs Code Docs Tools

Code docs describe your codebase.

vs

CandleKeep

CandleKeep gives your agent domain expertise.

FAQ

Common Questions

Everything you need to know before getting started.

The basics

Pricing & limits

Get Started in 60 Seconds

One command installs the CLI, authenticates, and connects your agents.

One command to get started

curl -fsSL https://getcandlekeep.com/install.sh | sh

Installs the CLI, authenticates, and configures Claude Code, Codex, and Cursor.

Your agent's first useful read in one session.

Scan this codebase and set up my CandleKeep library for this project. 1) Analyze the repo — languages, frameworks, architecture, and domain areas. 2) Browse the marketplace and subscribe to the top 3–5 most relevant books. 3) Explain why each book helps this codebase. 4) Suggest documents I should upload from my own knowledge.

Paste it into Claude Code, Cursor, or Codex after installing — your agent curates its own starting library.

Pricing

Simple, transparent pricing

Start free. Upgrade when you need more.

Personal

$0/ month

Free forever · no card required

A focused library for the topics you read most.

  • Claude Code plugin
  • Browse marketplace
  • 1 manuscript (agent-written knowledge base)
  • Search across library
  • Free collections
  • 5 items in your library
  • 100 agent reads / month
  • Not included: Publish to marketplace
  • Not included: Team sharing
Most Popular

Professional

$19/ month

Less than a coffee a day · cancel anytime

For power users who want to publish and let their agent write.

  • 200 items in your library
  • Unlimited agent reads
  • Unlimited manuscripts
  • Publish to marketplace
  • All premium collections
  • Priority processing
  • Everything in Personal
New

Team

$99/ month

Up to 5 seats · $19.80 / user / month

Shared libraries and centralized billing for teams.

  • Everything in Professional, plus:
  • Shared team libraries
  • Team management
  • Usage analytics
  • Centralized billing
  • Live RSS feeds — coming soon