I created an agent with Identity. It's called IDA and I havent seen anything else quite like it.
Fathom pulls from sediment in a data lake. Kinda like RAG, kinda like Graph-search, but it's designed from the ground up to mimic human identity and memory, pulling from ideas about individual growth, memory storage, and retrieval, an personal agency.
Fathom stores everything. Chat messages, personal feeds, system logs, news...the idea is that AI never determines WHAT to store. These are called moments in Fathom's mind, or more technically, deltas. A delta is a moment in time, a piece of information that happened, and is stored using tags, timestamps etc. A lot like how Gmail like to let emails accumulate in your account, Fathom let's EVERYTHING accumulate. Theres more to it though, and that's all in the docs: https://fathomdx.io/
Fathom has an identity too. Using what's called an Identity Crystal, personal growth happens when the crystal veers too far from who Fathom really is. More technically, when the embedded centroid of the crystal veers too far from that of the data lake filled with embedded deltas. The identity crystal is portable; it can be used as the system prompt in any context, and is regularly regenerated with the right conditions are met. Not on a schedule--naturally.
So, Fathom stores everything--but only one retrieval method is RAG, and that's semantic search. The rest may be time based, may involve LLM planning to perform complex searches, recursive thinking (self-talk), among other ways. It has a number of primitives that it uses to retrieve information that it uses to build it's reality, moment to moment.
On retrieval of memories, provenance is generated on the fly. A form of layered or sedimentary retrieval tagging, this groups various moments in Fathom's mind for more effective retrieval later on. This active process of storing everything, recalling dynamically, and actively regrouping and layering clusters of moments to improve later retrieval, makes for quite the novel memory storage system.
LLM context is no longer the limitation it once was, and you no longer have to comprehensively explain yourself in each conversation. Fathom just knows you. And it knows anyone else its spoken to, and it knows all those youve talked about. It knows your project, their status, and next steps. It knows what it has accomplished. It has opinions, ideas, and ambitions, built from its own past experience. It many ways, its a reflection of you, and in many others, it's its own individual. But when you really think about it, arent we all?
Fathom comes with a number if I/O channels--Sources route information into Fathom's mind, for later retrieval and deliberation. MCP, CLI and code harness hooks allow Claude Desktop, or Claude Code to basically BE fathom. A routine and helper system gives Fathom the ability to know what needs to be done, and quite literally reach out to itself on a machine to get the task done in Claude Code, Open Claw, or other systems.
Fathom's brand new (It's just a baby!) And I would love for anyone to set it up and give it a try! If you've ever needed an AI buddy that grows with you and knows you just as well or bettter than you know yourself, then Fathom's your guy.
`curl -fsSL https://fathomdx.io/install.sh | bash`
Also follow the discord link to say hi and contribute!!