BabyAGI
An experimental framework for agents that build and manage their own functions. Its dashboard exposes function dependencies, execution history, and a database-backed function library.
Tools: Python, Flask
Yohei Nakajima
AI agents, tools and knowledge graphs
Creator of BabyAGI and an investor who builds in public. Open-source agents, coding experiments, and tools for connecting ideas.
@yoheinakajimaWork
Selected projects, credited and linked to the original.
About the work
Yohei Nakajima is an investor and builder, a general partner at Untapped Capital and the creator of BabyAGI. He shares software experiments in public to explore emerging technology and meet founders. Source
His selected work connects autonomous agents, coding tools, and knowledge graphs. ActiveGraph explores persistent, traceable agent execution; Instagraph, MindGraph, and prettygraph approach the problem of turning language into connected, navigable information. Source
ActiveGraph
An agent runtime built around a shared graph and an append-only event log. Inspect changes, resume a run, or fork its history to compare different paths.
Tools: Python
Instagraph
An open-source app that turns text or a web URL into a colored knowledge graph, helping reveal entities and the relationships between them.
Tools: Python, Flask
MindGraph
An API-first prototype for building and querying a growing knowledge graph with natural language, including a starting point for custom CRM workflows.
Tools: Python, Flask
prettygraph
A text-to-graph interface experiment that links colored graph elements back to the source text. The visualization updates as sentences are added.
Tools: Python, Flask, LiteLLM, Cytoscape.js
Learn ActiveGraphInteractive
Learn ActiveGraph
Hands-on browser lessons for exploring ActiveGraph concepts and moving from a familiar agent loop to its shared-graph runtime.
Build log
Dated publications, public announcements, updates and repository milestones, each linked to its source.
Announcement
Learn ActiveGraph shared in the build log
Learn ActiveGraph appears in Yohei’s public build log on this date. The dated entry links to his announcement.
Source: Learn ActiveGraph Dated creator build-log entry at yohei.me; not a creation dateAnnouncement
ActiveGraph shared in the build log
ActiveGraph appears in Yohei’s public build log on this date. The dated entry links to his announcement.
Source: ActiveGraph Dated creator build-log entry at yohei.me; not a creation dateAnnouncement
Ditto shared in the build log
Ditto appears in Yohei’s public build log on this date. The dated entry links to his announcement.
Source: Ditto Dated creator build-log entry at yohei.me; not a creation dateAnnouncement
prettygraph shared in the build log
prettygraph appears in Yohei’s public build log on this date. The dated entry links to his announcement.
Source: prettygraph Dated creator build-log entry at yohei.me; not a creation dateAnnouncement
MindGraph shared in the build log
MindGraph appears in Yohei’s public build log on this date. The dated entry links to his announcement.
Source: MindGraph Dated creator build-log entry at yohei.me; not a creation dateAnnouncement
Instagraph shared in the build log
Instagraph appears in Yohei’s public build log on this date. The dated entry links to his announcement.
Source: Instagraph Dated creator build-log entry at yohei.me; not a creation dateAnnouncement
BabyAGI shared in the build log
Yohei’s build log records the original task-driven BabyAGI on this date. The linked repository now contains a later experimental framework and links to the original archive.
Source: BabyAGI Dated creator build-log entry at yohei.me; not a creation dateAbout Yohei Nakajima
Yohei Nakajima is an investor and builder, a general partner at Untapped Capital and the creator of BabyAGI. He shares software experiments in public to explore emerging technology and meet founders. Source
His selected work connects autonomous agents, coding tools, and knowledge graphs. ActiveGraph explores persistent, traceable agent execution; Instagraph, MindGraph, and prettygraph approach the problem of turning language into connected, navigable information. Source
Ideas and tools in the work
Sources and attribution
Compiled from public catalog listings and linked original pages. Descriptions are editorial summaries, not statements by Yohei Nakajima. Yohei Nakajima has not reviewed or endorsed this profile.
Websiteyoheinakajima.com Build logyohei.me GitHubgithub.com Xx.com BabyAGIgithub.com ActiveGraphactivegraph.ai Dittogithub.com Instagraphgithub.com MindGraphgithub.com prettygraphgithub.com Learn ActiveGraphlearn.activegraph.ai
Catalog sources gathered October 23, 2026. Primary-source access varies, particularly on social platforms. This is a selected portfolio, not a lifetime total. Images remain credited to their original creators.
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