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Hindsight

Long-term memory server for AI agents that builds knowledge over time

  • Agent frameworks and tools
  • AI models and runtimes
View on GitHub
Website

What it is

Hindsight is a memory service for AI agents, run as a server with a web UI or embedded in Python. Agents store facts with retain, search them with recall, and get answers grounded in accumulated observations and mental models with reflect, all organized into separate memory banks. Developers building agents and LLM apps connect through Python, TypeScript, Go, or CLI clients, an MCP server, or framework integrations, using any of 25+ hosted or local model providers.

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Facts

Stars
51,927 GitHub stars.
51,927

Forks
6,179
Commits
3,766
Contributors
288
Language
Python
License
MIT
Last commit
Oct 20, 2026
On GitHub since
October 2025
First release
December 2025
Platforms
web, CLI, self-hosted, library
Self-hostable
Yes
Alternative to
Zep
Tags
  • mcp-server
  • semantic-search
  • ai-memory
  • ai-agents
  • knowledge-graph

Last synced from GitHub on Oct 20, 2026

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What people are saying

Updated Oct 21, 2026
  • Bluesky“maybe the l*tta memory system is good but i don't know how effective "a bunch of markdown files" is, i feel like you need automatic injection of specific…”Sep 2, 2026 · 5 likes · 2 replies (opens Bluesky in a new tab)
  • Bluesky“hindsight.vectorize.io Persistent cross-session memory service that models agent recall, facts, and observations beyond raw chat history. steel.dev Cloud…”Oct 12, 2026 · 3 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Anyone's building memory for agents in #ElixirLang? Based on Bumblebee and something like maybe @brainlid.bsky.social? 😅 I'd like to keep it as "dependency"…”Jun 26, 2026 · 2 likes · 1 reply (opens Bluesky in a new tab)
  • Hacker NewsHindsight Reaches 10k GitHub Stars: The Community's Choice for Agent MemoryApr 22, 2026 · 3 points · 0 comments (opens Hacker News in a new tab)
  • Hacker NewsHindsight – An open-source memory system for AI agentsOct 5, 2026 · 2 points · 0 comments (opens Hacker News in a new tab)
  • Hacker NewsHindsight Is the Fastest-Growing Open-Source AI Memory ProjectJun 10, 2026 · 2 points · 0 comments (opens Hacker News in a new tab)
  • Bluesky“vectorize-io / hindsight Hindsight: Agent Memory That Learns”Apr 8, 2026 · 2 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Have you looked at this? hindsight.vectorize.io”Mar 19, 2026 · 1 like · 1 reply (opens Bluesky in a new tab)
  • Bluesky“It’s trying to make agents learn over time — not just remember conversations. Basically: Chat history → memory → understanding → better decisions. 🔗”Sep 25, 2026 · 0 likes · 1 reply (opens Bluesky in a new tab)
  • Bluesky“Got #Hindsight deployed tonight and tied into Claude Code… interested to see what comes of it hindsight.vectorize.io”Sep 29, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“vectorize-io/hindsight: 27.7k GitHub stars, 1,607 today alone. Three ops not one: Retain normalizes facts, Recall merges four retrieval strategies, Reflect…”Sep 25, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“While the agent is fixing the broken crap from yesterday, I'm going to have a look at hindsight:”Aug 23, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“vectorize-io/hindsight Hindsight: Agent Memory That Learns Documentation • Paper • Cookbook • Hindsight Cloud What is Hindsight? Hindsight™ is an agent memory…”Mar 14, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)