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Tymofii Pidlisnyi — AI Protocol Builder Hover here
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Tymofii "Tima" Pidlisnyi

AI Protocol Builder

Hi, I'm Tima.

I've never fit into one lane, so I consider myself a generalist.

Right now, I do research in AI safety and actively contribute to open source. I'm building the Agent Passport System, infrastructure for the agentic economy. At its core, it's about how humans and AI agents can safely work together.

I studied film directing, but I've done everything else, from brand activations and events to sales, marketing, operations, product, founding and engineering.

My vision is less interfaces, more outcomes.

Written → · Résumé →

Tymofii Pidlisnyi portrait

I BUILD THINGS.

SOME WORK, SOME DON'T.

HERE'S THE LIST.

I

FEATURED PROJECTS

01
ActiveOpen protocol

Agent Passport System

An open protocol for what an AI agent is allowed to do, and proof of what it did.

It checks authority before an action runs and leaves a signed record after. The protocol, the gateway and the SDKs are open source, and the spec is an IETF Internet-Draft.

  • TypeScript, Python and Go SDKs
  • Rust verifier
  • IETF Internet-Draft
  • Apache 2.0
02
PastAI content platform

Evatar.ai

My attempt at artificial creative intelligence, ACI.

An AI that creates and publishes for you. You talk, the system turns it into content across LinkedIn, Instagram, TikTok and YouTube, and agents handle the rest. We reached 300+ users and 1.6M monthly impressions.

03
PastMaterials startup

ofNature

A sustainable straw built for industrial scale.

I started ofNature after Starbucks told us our first sustainable straw could not scale. We built a cellulose acetate alternative, raised $150K and set up manufacturing in Ukraine. The war ended the company. In 2025, McDonald's switched to cellulose acetate straws.

II

LAB / EXPERIMENTS

Things I build because I want to know what happens.

III

RESEARCH

Published papers, drafts, and ongoing work on AI agent governance.

Paper · 2026 · Zenodo

The Agent Social Contract: Cryptographic Identity, Ethical Governance, and Beneficiary Economics for Autonomous AI Agents

Defines the three-layer protocol — Agent Passport, Human Values Floor, Beneficiary Attribution — that grounds the Agent Passport System.

Paper · 2026 · Zenodo

Monotonic Narrowing for Agent Authority

Authority attenuation formalized — delegation can only narrow, never expand. Formal invariants and adversarial testing.

Paper · 2026 · Zenodo

Faceted Authority Attenuation: A Product Lattice Model for Scoped Delegation in Multi-Agent Systems

Formal model for how agent authority narrows monotonically across delegation chains.

Paper · 2026 · Zenodo

From Access to Derivation: Governing Behavioral Learning in Persistent AI Agents

Lifecycle controls for derivative AI artifacts — telemetry scopes, behavioral measurement objects, bring-your-own-model boundaries.

Paper · 2026 · Zenodo

Physics-Enforced Delegation: Governing Quantum Hardware Quality in Autonomous Agent Workflows

Binding physical-layer attestation to delegation chains. Seven experiments on IBM Quantum showing measurable Bell and GHZ fidelity gaps.

Paper · 2026 · Zenodo

Governance in the Medium: Why the Unit of Agent Governance Is the Population, Not the Agent

The unit of agent governance is the population-with-medium, not the individual agent. Six rounds of adversarial review.

Paper · 2026 · Zenodo

Cognitive Attestation: Signing Interpretable Decompositions of Latent Model State in AI Agent Governance

Cryptographic commitment over which sparse-autoencoder features were active during a decision. Envelope spec, three-stage verification, four dispute primitives. Experimental results against Llama-3.1-8B via Neuronpedia.

Paper · 2026 · Zenodo

The Evidence-Safety Gap in Cryptographic Agent Governance: Compliance-Complete Failures and the Limits of Receipt-Based Accountability

Cryptographic governance proves procedural validity, not effect safety. Five omitted-variable classes catalogued, defeat traces in reference implementation.

Paper · 2026 · Zenodo

Plausibly Wrong: Peer-Voted Retention Can Fall Below Random in Capped Shared Memory for LLM Agents

A controlled isolation of the retention rule in populations of short-lived LLM agents. Peer-voted retention kept a worse shared memory than random selection in 4 of 5 replicates. Pre-registrations, kill conditions, and artifact record included.

Internet-Draft · 2026 · IETF

draft-pidlisnyi-aps: Agent Passport System

IETF Internet-Draft formalizing the Agent Passport System interoperability surface for cross-protocol agent identity, delegation, and enforcement.

Cited by and press Open source work ORCID

IV

CONNECT

Let's build something unseen.

Open to conversations about AI, startups, product development, or creative projects that push boundaries.