# API: Build custom tools on top of Company Brain

[Changelog](https://supermemory.ai/changelog) · [API](https://supermemory.ai/changelog/api)

APIAugust 7, 2026

## Build custom tools on top of Company Brain[#](https://supermemory.ai/changelog/build-custom-tools-on-top-of-company-brain)

Use an API key from the Supermemory app to build custom tools and workflows on top of your Company Brain.

### Improvements

* Company Brain auto-research now develops one timely idea using your connected apps and the web, then shares it in Slack in a natural first-person teammate voice.
* [Open API Keys in Settings to create, copy, review, or revoke access.](https://app.supermemory.ai/?settings=api-keys)
* [New FAQ: How do I make Supermemory the default memory in ChatGPT?](https://supermemory.ai/docs/supermemory-mcp/chatgpt-web#how-do-i-make-supermemory-the-default-memory-in-chatgpt)
* [The forget-matching API can now delete the exact memory IDs returned by a dry run, keeping the reviewed set unchanged.](https://supermemory.ai/docs/recall/memory-operations)
* The OpenAPI reference now documents how to list every container tag.

### Fixes

* Company Brain final Slack replies now survive interruptions, approval resumes, and messages that arrive mid-turn without dropping completed work.
* Company Brain's mid-turn Slack updates now arrive in order and are not repeated in the final reply.
* Fixed an issue where Company Brain could not forget a learned interaction style after you corrected it.
* Large API document lists no longer fail while loading memory relations.
* The Codex plugin no longer opens browser sign-in after you explicitly log out.

## Start building with supermemory.

Memory and continual learning for any model, any harness. Available through our API, plugins, and MCP.

[Build with supermemory ](https://console.supermemory.ai/)