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David Hurley

Founder, builder, researcher. Building Cumulative Systems: persistent computational state that AI models can save, reload, and share.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-26T08:41:56.663Z. Cached copy · Source on dbhurley.com

# David Hurley

> Founder, builder, researcher. Building Cumulative Systems: persistent computational state that AI models can save, reload, and share.

David Hurley (also known as DB Hurley) is the founder of Cumulative Systems. Cumulative saves a model's own internal working state and reloads it directly, including across different models. A provisional patent, Systems and Methods for Persistent Shared Computational State Across Heterogeneous Neural Models, was filed on September 10, 2026. He also builds Pantasso, governed company context, Plasmate, an agent-readable web, and ppl, a personal relationship manager at https://withppl.com. He created the Semantic Object Model (SOM) and authored the Adaptive Convergence Protocol (ACP) framework for self-evolving AI agents. His work spans production agent infrastructure, agent-web interaction, token economics, and the transition from SaaS to service-as-software business models.

Previously founded Mautic, the first open source marketing automation platform (millions of installations, acquired by Acquia in 2019). Has built 40+ ventures across AI, infrastructure, finance, education, and creative tools. Participates in the W3C Web Content for Browser and AI Community Group. Published 11 open-access works in 2026 spanning research and benchmark reports, a working paper, specifications, proposals, position papers, and a framework paper.

## Current season: coding (August 2026)

The current season is concentrated implementation, led by Cumulative Systems. Cumulative Systems saves a model's own working state and reloads it directly, including across different models. Pantasso and Plasmate continue alongside it. July was the busiest recorded private contribution month at 3,927, moving the private rank from #1,769 on July 17 to #1,285 on August 1. This is an activity signal, not a customer, revenue, or research-outcome claim.

- Contribution history: https://commit-history.com/dbhurley?metric=private

## Expertise and authority

David Hurley's work covers: persistent computational state for AI models, cross-model state transfer, adaptive runtimes for production AI agents, governed agent execution, agent-first company data platforms, governed company context, AI agents and the agentic web, the Semantic Object Model (SOM), self-evolving agent systems (Adaptive Convergence Protocol / ACP), token economics of AI-web interaction, agent-native business models, service-as-software, cooperative content negotiation, headless browser architecture for agents, open source community building, and marketing automation.

He coined the terms "retention layer" (self-evolving agents as compounding competitive advantage), "service layer" (the transition from software vendor to outcome provider), and contributed to the SOM specification for structured web content delivery to AI agents.

## Current work: Cumulative Systems, Pantasso, Plasmate, ppl

The operating stack is Cumulative Systems, Pantasso, and Plasmate. ppl is a separa
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