Hindsight is an open-source memory system from Vectorize: it extracts facts from what agents and users say, and its coding plugin keeps one memory bank per repo that every agent shares. Harbor learns from where the team decides, in Slack threads, PR reviews and docs, and serves the rules that apply. Hindsight runs on more agents and you can host it yourself. Harbor has the gate you set, served and cited counts on every rule, and guardrails.
Setup is self-serve and takes two minutes, with no call required. Every line about Hindsight is from its own pages, read on 30 October 2026.
Three things Harbor does for the team behind the agents, each beside what Hindsight's own pages say about the same job.
Manual, Hybrid or Auto. Whatever you pick, a contradiction waits for a person.
In HindsightExtraction is automatic, and the coding plugin documents no review step. On Hindsight Cloud, owners and admins manage banks and keys, and members read and use them.
Every rule shows how often it was served and how often an answer cited it.
In HindsightIts coding plugin logs, per turn and on your machine, which Hindsight tools the agent called and whether the reply credited Hindsight memory.
Block rules refuse it before it runs, in Claude Code, Cursor, Codex and Copilot.
In HindsightNot part of the product.
| Harbor | Hindsight | |
|---|---|---|
| What it is | A company brain for a team's coding agents. It learns the rules your team decides and serves the ones that apply to each session. | An agent memory system that extracts facts from conversations, consolidates them into observations and recalls them, plus a plugin that adds memory to coding agents. |
| Where the knowledge comes from | Slack, GitHub, GitLab, Notion, Confluence, Jira, Linear, Google Drive and Granola, plus what agent sessions record. | What agents and users say, extracted into facts. Its coding plugin also reads the repo's git history (commit messages by default, diffs if you ask) and keeps the session transcripts. |
| Who decides what gets in | You set the gate. Manual holds everything for a person, Hybrid adds routine rules and holds the important ones, Auto adds everything else. A contradiction always waits for a person. | Extraction is automatic, and the coding plugin documents no review step. On Hindsight Cloud, owners and admins manage banks and keys, and members read and use them. |
| How it reaches the agent | Hooks add the rules that apply to the session before the agent writes a line. The same rules are on an MCP server, the CLI and /harbor in Slack. | Its coding plugin installs hooks that recall on a session's first prompt and retain the transcript when the session stops. Agents can also search through its MCP server, SDKs or HTTP. |
| When a decision changes | When a push deletes the file a rule is about, the rule is retired, or flagged if other repos still use it. A newer decision that contradicts a rule waits for a person. | Related facts are consolidated into observations, which are refined rather than overwritten when new evidence arrives, and keep the evidence behind them. |
| Seeing what was used | Every rule shows how often it was served and how often an answer cited it. | Its coding plugin logs, per turn and on your machine, which Hindsight tools the agent called and whether the reply credited Hindsight memory. |
| Stopping a risky command | Block rules refuse a command before it runs, in Claude Code, Cursor, Codex and GitHub Copilot, and hand the agent something to run instead. | Not part of the product. |
| Agents | Claude Code, Cursor, Codex and GitHub Copilot (the CLI and VS Code). | 22 coding agents, including Claude Code, Codex CLI, opencode, Cursor CLI and GitHub Copilot CLI, and 30 frameworks and SDKs. |
| Open source and hosting | The CLI, harborloop, is MIT licensed on npm. The service is hosted. | Open source under MIT and self-hosted with one Docker command. Hindsight Cloud is hosted, with private cloud, your own cloud account or on-prem on Enterprise. |
| Price | Setup is self-serve and takes two minutes, with no call required. Free costs nothing for your whole team on one source, Pro is $24 per person a month billed yearly or $30 monthly, and Premium is $36, or $45 monthly. | Self-hosted is free. Cloud is billed on tokens with no seat price: $10 per million retained, $0.75 per million recalled and $0.05 a reflect, plus storage after 30 days. Enterprise is custom. |
| Best for | Engineering teams who want every coding session to start with what the team decided. | Developers who want open-source memory their agents fill and recall on their own. |
Hindsight's side comes from its own pages, read on 30 October 2026: hindsight.vectorize.io · Hindsight pricing · Hindsight on GitHub · Hindsight for coding agents · Hindsight integrations · Hindsight team roles. Out of date? Tell us.
Both put memory in front of coding agents, so most teams would pick one. The split is whether the memory comes from what your agents did or from what your team decided.
Yes, in private beta. Leave your email and we send your invite link. Create your workspace, run npx harborloop init, and setup takes two minutes, with no call. Hindsight can be signed up for today too.
The CLI, harborloop, is MIT licensed on npm. The service is hosted. Hindsight: Open source under MIT and self-hosted with one Docker command. Hindsight Cloud is hosted, with private cloud, your own cloud account or on-prem on Enterprise.
From Hindsight's own public pages, read on 30 October 2026, which are listed under the table. Products move, so if a line is out of date, tell us and we will fix it.
Nothing to migrate and nothing to write. Every agent starts with what your team settles, and two weeks in you see which rules they cite.
npx harborloop initSetup takes about 2 minutes once you're in. Free for your whole team, no card, no call.
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