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ContextBook
Stop re-explaining. Give agents the right context
ContextBook gives your AI tools a persistent, searchable knowledge library to draw the right context when they need it. No bloatware, no pre-loaded junk. Just the right information, at the right time.
Hey PH! 👋
I'm Aditya, a backend engineer building agentic AI systems at a financial firm.
Every time you start a new agent session, you're back to square one. Re-explaining context, re-setting rules,redefiningg scope. It's frustrating and repetitive, and it doesn't scale.
I built ContextBook to fix that.
It's not memory (pre-loaded, ambient, noisy). It's context — surgical, on-demand, scoped exactly to what the agent needs at that moment. Think of it as a structured knowledge layer your agents can pull from, not a dump they swim through.
The best part? It's completely platform-agnostic. One ContextBook instance works across Claude, GPT, Gemini, or any MCP-compatible agent — on any platform, any workflow. Build once, use everywhere.
How it works:
Organize knowledge into Books (scoped containers)
Break it into Pages (semantic chunks ≤1000 words)
Let agents retrieve exactly what's relevant via 8 MCP tools
Powered by Voyage AI embeddings + pgvector for fast semantic search
It's open-source, MCP-native, and deploys in minutes.
Stop re-explaining yourself to every agent. Give them the right context, right when they need it — across every platform you build on.
Would love your feedback, questions, and brutal honesty. 🙏
About ContextBook on Product Hunt
“Stop re-explaining. Give agents the right context”
ContextBook was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #93 on the daily leaderboard. ContextBook gives your AI tools a persistent, searchable knowledge library to draw the right context when they need it. No bloatware, no pre-loaded junk. Just the right information, at the right time.
On the analytics side, ContextBook competes within Productivity, Open Source and SaaS — topics that collectively have 764.9k followers on Product Hunt. The dashboard above tracks how ContextBook performed against the three products that launched closest to it on the same day.
Who hunted ContextBook?
ContextBook was hunted by Aditya Raj. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ContextBook including community comment highlights and product details, visit the product overview.
Aditya Raj