Turns legacy software workflows into agent-first APIs by observing human actions.
Using workflow reconstruction from observed actions, failure recovery for resilient automation, and structured action interfaces for agent integration.

Technology
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Automation API Layer
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YC W26

Last Updated:
March 20, 2026

Turns legacy software workflows into agent-first APIs by observing human actions, reconstructing the underlying request flow, and exposing stable endpoints for AI agents and internal systems.
Publicly, Zatanna is focused on turning human-only workflows into reliable APIs for AI agents, with emphasis on session handling, auth, retries, request sequencing, proxies, TLS fingerprinting, and anti-bot resilience. The likely near-term roadmap is a more self-serve workflow capture product, deeper observability, reusable integration templates, and enterprise controls for sensitive environments.
Private and non-traditional signals suggest the team started from vertical AI pain points and pivoted down the stack into infrastructure. Founder backgrounds and messaging point to strong anti-bot and workflow reverse-engineering capability. The absence of broad public hiring suggests a tight founder-led technical team, while customer/logo and throughput claims imply high-touch deployments with strong pressure toward productization.
<p>Uses ML to infer the hidden structure of legacy software workflows from a demonstrated task and convert that behavior into a stable, agent-usable API.</p>
Instead of making an AI click around a website forever, it learns the important steps once and turns them into a clean machine-readable action.
Zatanna’s most novel likely ML use case is workflow reconstruction: observing a human complete a task in a legacy app, identifying the important fields, states, requests, and dependencies underneath the interface, and then mapping that behavior into a reusable API contract. The value is not just browser playback. The harder problem is learning which actions are essential, which requests matter, how auth and session state propagate, and how to normalize the result into structured inputs and outputs that an agent can call reliably at scale.
This is like watching someone navigate a chaotic government office once, then drawing a secret back-door map so everyone else can skip the waiting room forever.
<p>Uses ML-assisted detection and adaptation to keep workflow-backed APIs reliable when upstream software changes, fails, or triggers anti-bot defenses.</p>
When the old software changes or breaks, the system tries to figure out what went wrong and recover instead of just failing silently.
A second highly differentiated use case is runtime resilience: classifying failures across auth issues, UI drift, request mismatch, anti-bot triggers, rate limits, and sequencing errors, then choosing the right recovery action. Publicly Zatanna emphasizes retries, recovery, re-authentication, proxies, TLS fingerprinting, and anti-bot handling. The ML-heavy layer is likely in detecting what kind of breakage occurred, identifying whether the workflow logic has drifted, and recommending or automating the minimum viable repair so the endpoint remains usable for agents without constant human babysitting.
It is like having a mechanic riding inside the car who can tell whether the problem is bad gas, a dead battery, or a closed road, then reroute before the trip is ruined.
<p>Uses ML to translate messy outputs from legacy systems into clean structured responses and agent-compatible tool interfaces.</p>
It turns confusing screens and software responses into neat, standardized answers an AI agent can actually use.
A third impressive use case is response understanding and tool abstraction. Legacy systems often return inconsistent screens, documents, forms, and semi-structured data. Zatanna likely uses ML to identify entities, normalize fields, infer schemas, and package results into stable response formats that agent frameworks can consume. This matters because the integration problem is not finished once a request is executed. The output also needs to be transformed from brittle software-native artifacts into dependable, typed results that can chain into downstream agent actions, internal systems, or analytics workflows.
It is like hiring a translator who not only speaks every messy software dialect, but rewrites each answer into the same clean memo format your whole team can use.
Zatanna’s edge appears to be a combination of anti-bot know-how, workflow reverse engineering, and a thesis that the real bottleneck for agents is software access rather than model intelligence alone.