CrbonFreeCrbonFree

Every AI session you have had. Remembered.

Your coding agents start every session from zero. AI Memory keeps your past work searchable, on your own computer.

Start freeInstall the CLI
  • Free on your computer
  • Cloud features are opt-in
Watch an agent recall a session from September
Sample memory
RE

Rowan Ellis

Platform engineer, Tallyfold

110 of 110 lit

Sessions remembered

110

120 days, every agent

Coding agents

5

Claude Code, Codex, Gemini CLI

Projects

4

payments-api, ledger-web

Oldest session

120days

8 Jul to 4 Nov 2026

Session graph

Loading the sample graph

Paid: agents search every session. Drag a session, hover for its card, click the graph to zoom.

Memory readyIndexed under ~/.crbon/memory

A made-up engineer at a made-up company. No customer data.

Works with the agents and assistants you already use

Claude Code, Codex, Gemini CLI, Cursor and OpenCode get the memory tools through crbon-mcp. ChatGPT, Claude and Gemini chats are kept in the browser.

Coding agentsClaude CodeCodexGemini CLICursorOpenCodeIn the browserChatGPTClaudeGeminiCoding agentsClaude CodeCodexGemini CLICursorOpenCodeIn the browserChatGPTClaudeGemini

You choose which agents get the tools, duringcrbon installor with crbon memory agents.

Recall demoSample sessions, made up

Ask about September. The session comes back.

Rowan asks Claude Code how the duplicate refunds were stopped. search_content returns three sessions from payments-api, two of them from other agents. get_messages reads around the second, and the answer arrives with the date and the change.

rowan@tallyfold: ~/payments-api

Plays once as it scrolls into view. Replay runs it again; reduced motion shows the finished transcript.

Rowan’s sessions

Scroll to play

Loading the sample graph

  • Claude Code11 Sep

    1. Duplicate refunds after webhook retries

  • Codex12 Sep

    2. Add idempotency keys to the refund webhook

  • Cursor12 Sep

    3. Unique index on provider event id

All 110 made-up sample sessions for Rowan Ellis

  • Speed up the reconciliation job. Agent: Codex. Project: data-pipeline. Date: 2026-11-04. Messages: 83.
  • Debug the deploy pipeline on staging. Agent: Gemini CLI. Project: infra. Date: 2026-11-03. Messages: 8.
  • Rate limit the payouts endpoint. Agent: Claude Code. Project: payments-api. Date: 2026-11-02. Messages: 66.
  • Speed up the merchant filter. Agent: Claude Code. Project: ledger-web. Date: 2026-11-02. Messages: 6.
  • Write tests for the refund webhook. Agent: Codex. Project: payments-api. Date: 2026-11-02. Messages: 20.
  • Add logging to the daily settlement report. Agent: OpenCode. Project: data-pipeline. Date: 2026-11-01. Messages: 46.
  • Harden the ingress rules. Agent: OpenCode. Project: infra. Date: 2026-11-01. Messages: 17.
  • Profile the merchant lookup. Agent: Claude Code. Project: payments-api. Date: 2026-10-31. Messages: 7.
  • Remove the dead code in the warehouse sync. Agent: Claude Code. Project: data-pipeline. Date: 2026-10-31. Messages: 50.
  • Speed up the queue workers. Agent: OpenCode. Project: infra. Date: 2026-10-31. Messages: 16.
  • Profile the balance check. Agent: Cursor. Project: payments-api. Date: 2026-10-30. Messages: 11.
  • Speed up the session timeout. Agent: Gemini CLI. Project: ledger-web. Date: 2026-10-30. Messages: 25.
  • Add metrics to the payout scheduler. Agent: OpenCode. Project: payments-api. Date: 2026-10-29. Messages: 14.
  • Why does the webhook signature check fail on CI. Agent: Claude Code. Project: payments-api. Date: 2026-10-29. Messages: 6.
  • Flaky settlement test on CI. Agent: Claude Code. Project: payments-api. Date: 2026-10-28. Messages: 29.
  • Add retries to the ledger export. Agent: Codex. Project: ledger-web. Date: 2026-10-27. Messages: 25.
  • Refactor the dedupe step. Agent: Codex. Project: data-pipeline. Date: 2026-10-27. Messages: 44.
  • Speed up the deploy pipeline. Agent: Codex. Project: infra. Date: 2026-10-27. Messages: 6.
  • Write tests for the VPN config. Agent: Gemini CLI. Project: infra. Date: 2026-10-27. Messages: 12.
  • Terraform plan drift on staging. Agent: Gemini CLI. Project: infra. Date: 2026-10-24. Messages: 19.
  • Fix the warehouse sync. Agent: Claude Code. Project: data-pipeline. Date: 2026-10-22. Messages: 77.
  • Document the late-arriving events. Agent: Codex. Project: data-pipeline. Date: 2026-10-21. Messages: 84.
  • Fix the invoice table. Agent: Claude Code. Project: ledger-web. Date: 2026-10-18. Messages: 45.
  • Reproduce the race in the daily settlement report. Agent: Claude Code. Project: data-pipeline. Date: 2026-10-18. Messages: 35.
  • Add logging to the KMS policy. Agent: Claude Code. Project: infra. Date: 2026-10-17. Messages: 55.
  • Harden the statement PDF. Agent: Cursor. Project: ledger-web. Date: 2026-10-17. Messages: 10.
  • Harden the transactions table. Agent: Cursor. Project: data-pipeline. Date: 2026-10-17. Messages: 69.
  • Why does the ledger export time out. Agent: Claude Code. Project: ledger-web. Date: 2026-10-17. Messages: 37.
  • Reproduce the race in the CSV download. Agent: Claude Code. Project: ledger-web. Date: 2026-10-17. Messages: 18.
  • Draft a rollback plan for the invoice table. Agent: Claude Code. Project: ledger-web. Date: 2026-10-16. Messages: 26.
  • Explain the dashboard tiles to a new teammate. Agent: Cursor. Project: ledger-web. Date: 2026-10-14. Messages: 35.
  • Refactor the retry queue. Agent: Claude Code. Project: payments-api. Date: 2026-10-14. Messages: 26.
  • Add logging to the capture flow. Agent: Claude Code. Project: payments-api. Date: 2026-10-13. Messages: 93.
  • Add metrics to the alert rules. Agent: Claude Code. Project: infra. Date: 2026-10-13. Messages: 30.
  • Cache the merchant lookup. Agent: Claude Code. Project: payments-api. Date: 2026-10-11. Messages: 58.
  • Add logging to the deploy pipeline. Agent: Codex. Project: infra. Date: 2026-10-10. Messages: 6.
  • Remove the dead code in the balance check. Agent: Claude Code. Project: payments-api. Date: 2026-10-09. Messages: 33.
  • Why does the payout scheduler fail on CI. Agent: Gemini CLI. Project: payments-api. Date: 2026-10-09. Messages: 63.
  • Add retries to the statements page. Agent: Gemini CLI. Project: ledger-web. Date: 2026-10-07. Messages: 41.
  • Document the runner pool. Agent: Cursor. Project: infra. Date: 2026-10-06. Messages: 73.
  • Partition the transactions table by month. Agent: Gemini CLI. Project: data-pipeline. Date: 2026-10-04. Messages: 74.
  • Trace the slow path in the warehouse sync. Agent: Codex. Project: data-pipeline. Date: 2026-10-04. Messages: 12.
  • Add metrics to the VPN config. Agent: Codex. Project: infra. Date: 2026-10-03. Messages: 6.
  • Remove the dead code in the webhook signature check. Agent: Codex. Project: payments-api. Date: 2026-10-03. Messages: 72.
  • Explain the chargeback handler to a new teammate. Agent: Codex. Project: payments-api. Date: 2026-10-01. Messages: 21.
  • Trace the slow path in the webhook signature check. Agent: Claude Code. Project: payments-api. Date: 2026-10-01. Messages: 7.
  • Profile the idempotency store. Agent: Codex. Project: payments-api. Date: 2026-09-30. Messages: 50.
  • Draft a rollback plan for the ledger export. Agent: Codex. Project: ledger-web. Date: 2026-09-27. Messages: 8.
  • Refactor the Terraform modules. Agent: Claude Code. Project: infra. Date: 2026-09-26. Messages: 13.
  • Review the alert rules before release. Agent: Claude Code. Project: infra. Date: 2026-09-26. Messages: 7.
  • Write tests for the fraud score export. Agent: Gemini CLI. Project: data-pipeline. Date: 2026-09-26. Messages: 84.
  • Rotate the KMS key without downtime. Agent: OpenCode. Project: infra. Date: 2026-09-25. Messages: 41.
  • Draft a rollback plan for the account switcher. Agent: Codex. Project: ledger-web. Date: 2026-09-23. Messages: 56.
  • Reproduce the race in the merchant lookup. Agent: Claude Code. Project: payments-api. Date: 2026-09-22. Messages: 94.
  • Review the webhook signature check before release. Agent: OpenCode. Project: payments-api. Date: 2026-09-20. Messages: 11.
  • Debug the dashboard tiles on staging. Agent: OpenCode. Project: ledger-web. Date: 2026-09-19. Messages: 66.
  • Debug the dispute webhook on staging. Agent: Gemini CLI. Project: payments-api. Date: 2026-09-19. Messages: 6.
  • Profile the settlement test. Agent: Claude Code. Project: payments-api. Date: 2026-09-19. Messages: 100.
  • Add metrics to the session timeout. Agent: Codex. Project: ledger-web. Date: 2026-09-18. Messages: 79.
  • Explain the merchant rollup to a new teammate. Agent: OpenCode. Project: data-pipeline. Date: 2026-09-18. Messages: 97.
  • Document the log retention. Agent: Claude Code. Project: infra. Date: 2026-09-17. Messages: 83.
  • Reproduce the race in the invoice table. Agent: Codex. Project: ledger-web. Date: 2026-09-17. Messages: 31.
  • Explain the settlement test to a new teammate. Agent: OpenCode. Project: payments-api. Date: 2026-09-16. Messages: 33.
  • Fix the dispute webhook. Agent: Codex. Project: payments-api. Date: 2026-09-16. Messages: 93.
  • Reproduce the race in the KMS policy. Agent: OpenCode. Project: infra. Date: 2026-09-16. Messages: 69.
  • Speed up the account switcher. Agent: Claude Code. Project: ledger-web. Date: 2026-09-15. Messages: 25.
  • Document the webhook signature check. Agent: Claude Code. Project: payments-api. Date: 2026-09-14. Messages: 76.
  • Document the provider client. Agent: Claude Code. Project: payments-api. Date: 2026-09-13. Messages: 10.
  • Refactor the late-arriving events. Agent: OpenCode. Project: data-pipeline. Date: 2026-09-13. Messages: 37.
  • Add idempotency keys to the refund webhook. Agent: Codex. Project: payments-api. Date: 2026-09-12. Messages: 61.
  • Unique index on provider event id. Agent: Cursor. Project: payments-api. Date: 2026-09-12. Messages: 22.
  • Add metrics to the dispute webhook. Agent: Codex. Project: payments-api. Date: 2026-09-11. Messages: 7.
  • Duplicate refunds after webhook retries. Agent: Claude Code. Project: payments-api. Date: 2026-09-11. Messages: 48.
  • Profile the chargeback handler. Agent: Cursor. Project: payments-api. Date: 2026-09-10. Messages: 94.
  • Draft a rollback plan for the dedupe step. Agent: Gemini CLI. Project: data-pipeline. Date: 2026-09-08. Messages: 96.
  • Backfill missing FX rates. Agent: Cursor. Project: data-pipeline. Date: 2026-09-01. Messages: 33.
  • Reproduce the race in the transactions table. Agent: OpenCode. Project: data-pipeline. Date: 2026-08-30. Messages: 24.
  • Refactor the database backups. Agent: Cursor. Project: infra. Date: 2026-08-26. Messages: 7.
  • Refactor the statement PDF. Agent: Codex. Project: ledger-web. Date: 2026-08-26. Messages: 16.
  • Speed up the transactions table. Agent: Claude Code. Project: data-pipeline. Date: 2026-08-26. Messages: 32.
  • Remove the dead code in the dispute webhook. Agent: Codex. Project: payments-api. Date: 2026-08-24. Messages: 104.
  • Add logging to the staging cluster. Agent: Claude Code. Project: infra. Date: 2026-08-23. Messages: 11.
  • Refactor the reconciliation job. Agent: Claude Code. Project: data-pipeline. Date: 2026-08-22. Messages: 18.
  • Why does the event schema fail on CI. Agent: Claude Code. Project: data-pipeline. Date: 2026-08-22. Messages: 10.
  • Add metrics to the secrets rotation. Agent: Codex. Project: infra. Date: 2026-08-21. Messages: 24.
  • Speed up the merchant rollup. Agent: Claude Code. Project: data-pipeline. Date: 2026-08-20. Messages: 12.
  • Reproduce the timezone bug in statements. Agent: Cursor. Project: ledger-web. Date: 2026-08-20. Messages: 27.
  • Profile the merchant rollup. Agent: Gemini CLI. Project: data-pipeline. Date: 2026-08-19. Messages: 15.
  • Document the dedupe step. Agent: Gemini CLI. Project: data-pipeline. Date: 2026-08-17. Messages: 27.
  • Document the retry queue. Agent: Codex. Project: payments-api. Date: 2026-08-12. Messages: 39.
  • Fix the webhook signature check. Agent: Cursor. Project: payments-api. Date: 2026-08-10. Messages: 101.
  • Migrate cron jobs to the queue. Agent: Codex. Project: infra. Date: 2026-08-01. Messages: 52.
  • Profile the KMS policy. Agent: Claude Code. Project: infra. Date: 2026-07-31. Messages: 39.
  • Speed up the dashboard tiles. Agent: Claude Code. Project: ledger-web. Date: 2026-07-30. Messages: 6.
  • Speed up the Terraform modules. Agent: Claude Code. Project: infra. Date: 2026-07-30. Messages: 33.
  • Why does the date picker fail on CI. Agent: Cursor. Project: ledger-web. Date: 2026-07-28. Messages: 49.
  • Add retries to the reconciliation job. Agent: Claude Code. Project: data-pipeline. Date: 2026-07-27. Messages: 10.
  • Draft a rollback plan for the settlement test. Agent: Gemini CLI. Project: payments-api. Date: 2026-07-19. Messages: 39.
  • Reproduce the race in the Terraform modules. Agent: Gemini CLI. Project: infra. Date: 2026-07-18. Messages: 65.
  • Add metrics to the activity feed. Agent: Claude Code. Project: ledger-web. Date: 2026-07-17. Messages: 86.
  • Add metrics to the fraud score export. Agent: Claude Code. Project: data-pipeline. Date: 2026-07-17. Messages: 7.
  • Harden the merchant rollup. Agent: Cursor. Project: data-pipeline. Date: 2026-07-13. Messages: 17.
  • Add logging to the webhook signature check. Agent: Claude Code. Project: payments-api. Date: 2026-07-12. Messages: 68.
  • Speed up the dispute webhook. Agent: Claude Code. Project: payments-api. Date: 2026-07-12. Messages: 53.
  • Remove the dead code in the statement PDF. Agent: Codex. Project: ledger-web. Date: 2026-07-11. Messages: 88.
  • Trace the slow path in the dashboard tiles. Agent: Claude Code. Project: ledger-web. Date: 2026-07-11. Messages: 84.
  • Fix the dedupe step. Agent: Gemini CLI. Project: data-pipeline. Date: 2026-07-10. Messages: 29.
  • Add logging to the idempotency store. Agent: OpenCode. Project: payments-api. Date: 2026-07-09. Messages: 104.
  • Write tests for the merchant filter. Agent: Codex. Project: ledger-web. Date: 2026-07-09. Messages: 104.
  • Write the incident timeline for the outage. Agent: Claude Code. Project: infra. Date: 2026-07-08. Messages: 45.
What you can do

Search less. Resume the actual work.

Three tools through crbon-mcp and a few commands for the rest. Local by default; the two paid switches are separate choices, each off until you turn it on.

Search past sessions

search_content finds past sessions by text, on your own machine. Your agent asks for a session the way you would, and gets the hits back with their titles, agents and dates.

search_contentthrough crbon-mcp

Read around a hit

get_messages reads the messages around a result, so the agent sees the decision and what led to it. get_memory_status checks memory is ready.

get_messagesthrough crbon-mcp
v0.2.4

Export a session

Write one session out as Markdown, ready to paste into another agent, or as JSON or the raw transcript.

crbon memory export <session-id>
v0.2.4

Choose your agents

crbon install asks whether to turn memory on and which agents get the tools. Change the list any time; crbon status shows it.

crbon memory agents
v0.2.4

Keep to a folder list

Only the folders you list are archived, and the memory tools show only their sessions.

crbon config set sync-folders ~/work/acme
Paidv0.2.4

Search by meaning

Summaries and search by meaning, built by an AI provider through Vercel’s AI Gateway. Crbon does not store the text, and semantic off stops it.

crbon memory semantic on
Paidv0.2.4

Sync to the dashboard

Upload the prompts and replies from chosen folders. Search them, read transcripts and see your graph. On Free and the paid plan only you see them; workspace admins do not.

crbon memory sync on

Browser Chat Memory

One drawer for three AI chats.

ChatGPT, Claude and Gemini chats stay on your device, in the browser. Open the drawer in Chrome or Edge and pick up any captured conversation.

Google ChromeAdd to ChromeMicrosoft EdgeAdd to Edge

Free, on your device

  • See every captured chat across all three assistants and filter by provider.
  • Search titles and messages with highlighted matches, or search inside one conversation.
  • Copy, rename or open the original chat. Export .md, .txt or .json.
  • Attach a chat as a file in another assistant. It never sends the message; you review and send.

Paid, one chat at a time

Back up a chat you choose, add labels to backed-up chats and search local and backed-up chats together. A backed-up chat stays searchable after the browser drops its local copy.

Chat Memory

On this device
AllChatGPTClaudeGemini
refund4 chats

  • Explain idempotent webhook handling

    12 Sep

    A retry can deliver the same refund event twice, so the handler needs a key it can check before it acts.

    • Copy
    • Open in ChatGPT
    • Rename
    • Export .md, .txt or .json
    • Attach to Claude

  • Draft the incident note for the refund outage

    14 Sep

    The handler now stores the provider event id under a unique index and skips any repeat.

    Backed uppayments

  • Compare Postgres unique index options

    12 Sep

    A partial unique index on the refund provider id keeps the table small and the check fast.

  • Summarise the refund policy for support

    28 Oct

    The window for a customer refund is 30 days from capture, with partial refunds allowed once.

Attach adds the chat as a file to the other assistant’s box. You review and send.

Free and usage-based

What is on each plan

Memory featureFreeUsage-based
Coding agent historyNewest 200 sessionsEvery session
Search sessions by textIncludedIncluded
Read around a hit, export, agent choice, folder listIncludedIncluded
Search by meaning and summariesNot includedOptional, with crbon memory semantic on
Dashboard sync and session graphNot includedOptional, for sessions in chosen folders
Browser Chat MemoryLocal capture, search and exportPlus per-chat backup, labels and combined search

Paid is usage-based

$1.99 once, then $0.10 per million billable tokens. There is no monthly fee. Full agent history comes with it; search by meaning, sync and chat backup are separate switches, each off until you turn it on.

Free has no card and no time limit

Agents search your newest 200 sessions on your own machine. Browser chats stay on the device with search and export.

Everything the plans include

Privacy, plainly

Local by default. Every cloud switch is yours.

Where does memory live?

On your computer. Coding sessions are indexed under ~/.crbon/memory and stay there by default. Browser chats stay on the device, in the browser. A folder list limits which folders are archived and which sessions the tools can show.

What leaves the machine, and when?

No session text leaves your machine until you turn a paid switch on. The CLI’s usage meter sends usage metadata, never your prompts. Semantic search sends session text to Crbon’s endpoint, then to an AI provider through Vercel’s AI Gateway to build the index; Crbon does not store that text. Sync uploads the prompts and replies from chosen folders, with home paths made ~ and known secrets scrubbed first.

Who can read what you sync?

Crbon stores synced sessions and can read them; they are not end-to-end encrypted. In the dashboard only you see them. On Free and the paid plan, workspace admins do not. crbon memory sync off stops new uploads, and sync delete --yes removes the cloud copy.

These promises cover Free and the paid plan. Enterprise Corporate Memory, below, is in development and changes none of them today.

In developmentEnterprise

Enterprise Corporate Memory

Enterprise Corporate Memory is in development and not available yet.

Today memory is personal. On Free and the paid plan only its owner sees it, and workspace admins do not. Enterprise would add the views and the sharing an organisation needs, under a policy the organisation sets.

  • An AI admin view

    An admin can open any member’s AI memory, one person at a time.

  • Sharing by an admin

    Admins can share a member’s memory with colleagues when the work needs it, for example handing work over when someone changes role or leaves.

  • A supervisor view

    Supervisors see the memory of their direct reports and their group, and can share it.

  • Sharing by members

    Members can share their own memories with any colleague.

  • A workspace capture policy

    Set by the AI admin, including whether members can opt out.

  • Ring-fenced groups

    Groups such as HR and Finance, kept apart from everyone else.

  • Filters for personal conversations

    Filters that keep personal and non-work conversations out of company memory.

  • Later: Unified Corporate Memory

    One graph across the organisation that shows how work connects within and between teams, and finds overlapping and duplicated effort.

Talk to us about Enterprise

In development, not available yet

Sample organisation

Tallyfold, made up

REMKJOALSNPTHVCBLMPAYMENTSPLATFORMDATAFINANCE (RING-FENCED)
  • Payments
  • Platform
  • Data
  • Financering-fenced

Larger nodes are people; small ones are their sessions. Dashed magenta threads join work across Payments, Platform and Data. Nothing crosses the Finance ring.

Get started

Three steps back to your past work.

Install, answer yes to memory, choose your agents. Then ask about the work you were doing.

Read the CLI docs
  1. 1

    Install the CLI

    Install version 0.2.4 of @crbonfree/cli from npm.

    npm install -g @crbonfree/cli
  2. 2

    Turn on memory and pick your agents

    Run the installer, answer yes when it asks about memory, then choose the coding agents that should receive the tools.

    crbon install
  3. 3

    Check it and ask about past work

    Confirm memory is ready, then ask your agent to find an earlier session and read the messages around the result.

    crbon status
    Find my last session about the flaky checkout test and read around the decision.
    An example question for your coding agent

Useful later

crbon memory agentscrbon memory offcrbon config set sync-folders ~/work/acmecrbon memory export <session-id>

Questions

Before you turn on memory.

Local paths, plan limits, cloud choices and deletion, without the fine-print routine.

Read the CLI docs

  • Coding memory works with Claude Code, Codex, Gemini CLI, Cursor and OpenCode. You choose which agents receive the tools during crbon install or with crbon memory agents. The Chrome and Edge extension captures chats from ChatGPT, Claude and Gemini.

  • They are indexed on your own machine under ~/.crbon/memory and stay there by default. With crbon config set sync-folders ~/work/acme, only the folders you list are archived and only their sessions appear through the memory tools.

  • Free lets agents search your newest 200 sessions and includes local browser chat memory. The paid plan covers every agent session and adds opt-in semantic search, opt-in sync and browser chat backup features. It is usage-based: $1.99 once, then $0.10 per million billable tokens.

  • On the paid plan, crbon memory semantic on enables search by meaning and summaries. Session text goes to Crbon’s endpoint, which forwards it to an AI provider through Vercel’s AI Gateway to build the search index. Crbon does not store that text. Run crbon memory semantic off to stop it.

  • crbon memory sync on uploads prompts and agent replies from sessions in your chosen folders to your CrbonFree dashboard. Home paths become ~ and known secrets are scrubbed before upload. Crbon stores synced sessions and can read them; they are not end-to-end encrypted. Only you see them in the dashboard, not workspace admins. Run crbon memory sync off to stop new uploads.

  • Filter by assistant, search titles and messages with highlighted matches, or search within one conversation. You can copy, rename, open the original chat or export it as .md, .txt or .json. Attaching a chat to another assistant adds a file to its chat box; you review and send it yourself.

  • crbon memory sync delete --yes deletes the cloud copy. Add --session <id> to delete one synced session. Turning sync off stops new uploads without deleting what is already there.

Stop re-explaining last month to this week’s agent.

Memory is free on your computer. Cloud features are paid and opt-in.

Start freeOr browse the sample dashboard first