Agentic Infrastructure

Infrastructure built for AI-native delivery.

Agentic development only works when the infrastructure around it can keep up. The right delivery stack turns more agent output into faster engineering cycles and smoother releases.

Book a call
Explore services

When delivery becomes the bottleneck

Turn AI output into
faster product delivery.

Agents increase implementation speed, but the bottleneck does not stay there for long. It moves into the delivery systems that now have to keep pace with more code and more change.

Review AI-written code faster.

A QA agent checks output on real devices and in delivery workflows, so faster implementation does not turn into slower releases.

Own your delivery infrastructure.

Self-hosted CI, device, and release infrastructure stay inside your environment, with agents handling the maintenance work around them.

Open source at the core.

The stack builds on tooling your team can audit, extend,
and keep using as needs evolve.

Expert execution. Agentic speed.

AI-Driven QA & Testing
Custom Agents
Self-Hosted CI/CD Infrastructure

AI-Driven QA & Testing

Keep QA ahead of agentic delivery.

AI-native teams need verification that keeps up with local and cloud agents. We provide an AI QA agent that checks work in real time on devices, locally and on pull requests, so regression checks, exploratory QA, and release validation become part of the delivery flow.

Use Cases

AI-Native Test Automation
Button
Automated Accessibility Audits for EEA
Cross-Platform Code Verification
AI-Generated Code Validation
Release Validation
Real-Device Testing
Regression Prevention
On-Prem & Cloud QA Execution
AI-Driven QA & Testing

Put an AI QA agent in your flow.

Tell us where testing slows your team down today. We'll come back with a plan to wire the QA agent into your delivery flow and what to prove out first.

  • Run it locally or in the cloud
  • Debug issues with better instrumentation
  • Get it into the stack faster
AI-Driven QA & Testing

Custom Agents

Put agents on recurring engineering work.

Teams get more from AI when agents take on repeatable engineering work. We set up internal agents and workflows so work can run in parallel and continue after a developer session ends.

Use Cases

Code Review Agents
Upgrade Agents
Maintenance Agents
Documentation Agents
CI/CD Automation Agents
Internal Tool Agents
Custom Agents

Build agents for your delivery workflow.

Show us your most repetitive workflows. We will build custom agents that handle the heavy lifting while your team focuses on high-impact work.

  • Keep work moving in parallel
  • Cut the busywork around delivery
  • Turn team habits into tools
  • Grow output without hiring linearly
Custom Agents

Self-Hosted CI/CD Infrastructure

Run delivery infrastructure on your terms.

Hosted delivery infrastructure does not fit every cost, security, or control requirement. Our self-hosted CI/CD, OTA, and agent execution infrastructure lets teams run delivery on their own terms and keep more of the stack under their control.

Use Cases

Release Automation
Button
CI/CD Modernization
Build & Test Acceleration
OTA Rollout Management
Release Monitoring & Observability
Button
Deployment Health Visibility
Delivery Cost Optimization
Self-Hosted CI/CD Infrastructure

Move delivery infrastructure in-house.

Send us your current CI/CD, observability, and release stack. We'll come back with a migration plan to build tooling on your own infrastructure.

  • Reach market faster
  • Catch delivery issues earlier
  • Lower the cost of running delivery
Self-Hosted CI/CD Infrastructure
Agentic Infrastructure

Infrastructure built for AI-native delivery.

Agentic development only works when the infrastructure around it can keep up. The right delivery stack turns more agent output into faster engineering and smoother releases.

Book consultation

Design → Build → Extend

Infrastructure for AI-native mobile delivery.

Design

We map the mobile delivery stack, controls, and cost. You get the plan before migration starts.

See hosted vs self-hosted economics
Find the gaps in the delivery stack
1 week

Build

We deploy QA, CI/CD, OTA, and telemetry. The mobile delivery stack runs in your environment from day one.

QA agent, OTA, and CI/CD included
Telemetry and release signals included
2-4 WEEKS

Extend

Your team owns the stack long term. We stay on to extend it as delivery needs grow.


Extend the stack beyond the first rollout
Add new agents as needs change
AS NEEDED
Test
Code
engineer
Review
Deploy

One engineer, multiple agents.
Shipping in parallel.

Our engineers orchestrate. Code generation, testing, migrations,
and reviews run simultaneously across multiple agents.

Callstack Delivery Model

Case studies

What shipping at AI speed looks like

Case Study Cover
Self-Hosted CI/CD Infrastructure
Architecture & Performance

Building Scalable Observability for a High-Growth React Native App

3→1

analytics systems unified into a single interface

Case Study Cover
Architecture & Performance
AI-Driven QA & Testing
Self-Hosted CI/CD Infrastructure

Enhancing Application's Performance for Expensify

5x

faster message sending time

10 years of React Native → Now in your AI stack

Ship your product at AI speed.

Senior engineers and agents, building cross-platform products faster without lowering the bar. Let's scope what that looks like for your team.

Book consultation

Why teams bet on Callstack

From billion-user apps to React Native core, this is why teams choose Callstack when they need to move fast and get it right.

Rocket ascending into a blue night sky with digital binary code forming its smoke trail.

10 years in React Native. Now shaping agentic engineering.

For a decade, we have helped define how teams ship with React Native. Now we are helping shape how they work with agents.

Founded in 2016 ·Backed by Viking Global Investors

React Foundation members. Core Contributors.

We are founding members of React Foundation and Core Contributors to React Native. You get direct access to people close to the decisions shaping the frameworks you use.

Open source since 2016. Our code runs in your app.

We contribute to React Native and maintain libraries across its ecosystem. Our code runs in apps used by millions of people every day.

Open Source Projects

39M+

Downloads / month

67K+

GitHub stars

300+

React Native commits

100+ Enterprise clients with 7B+ users.

We work with teams shipping at real scale. You get a partner used to high-stakes products, not learning on your roadmap.

Agent Conf. The conference for the Agentic era.

The conference we built for the shift from writing code to orchestrating agents.

Agent Conf
Gradient background blending white, light blue, and purple shades with smooth transitions.Man wearing glasses and a Stanford sweatshirt speaking into a microphone during a presentation.

We are Codex Ambassadors.

We run meetups, workshops, and hands-on 
sessions that help teams learn Codex 
and apply it in real work.

Check Events
Rocket ascending into a blue night sky with digital binary code forming its smoke trail.

10 years in React Native. Now shaping agentic engineering.

For a decade, we have helped define how teams ship with React Native. Now we are helping shape how they work with agents.

Founded in 2016 ·Backed by Viking Global Investors

React Foundation members. Core Contributors.

We are founding members of React Foundation and Core Contributors to React Native. You get direct access to people close to the decisions shaping the frameworks you use.

Open source since 2016. Our code runs in your app.

We contribute to React Native and maintain libraries across its ecosystem. Our code runs in apps used by millions of people every day.

Open Source Projects

39M+

Downloads / month

67K+

GitHub stars

300+

React Native commits

100+ Enterprise clients with 7B+ users.

We work with teams shipping at real scale. You get a partner used to high-stakes products, not learning on your roadmap.

Agent Conf. The conference for the Agentic era.

The conference we built for the shift from writing code to orchestrating agents.

Agent Conf
Gradient background blending white, light blue, and purple shades with smooth transitions.Man wearing glasses and a Stanford sweatshirt speaking into a microphone during a presentation.

We are Codex Ambassadors.

We run meetups, workshops, and hands-on 
sessions that help teams learn Codex 
and apply it in real work.

Check Events

Open Source

Want to build it on your own?

We open-source the tools behind our delivery model.
Use them, fork them, or let us run them for you.

Check All Tools
Agent Device

CLI to control iOS and Android devices for AI agents

188238
downloads / month
Agent React DevTools

Gives AI agents access to React DevTools

222
stars
Agent Skills

Callstack’s best practices on React Native performance optimization, upgrading, CI workflows, and brownfield migrations

1374
stars
Skill Gym

Prove your agent skills work before you ship them

1500
downloads / month

Insights

Worth your time, by engineers.

Explore Insights
No items found.
No items found.
cover
Feb 17
·
Article

Agent Device: iOS & Android Automation for AI Agents

This article introduces agent-device, a new CLI for automating mobile UI workflows with AI agents. It explains what the tool is, how it helps developers with token-efficient snapshots and repeatable interactions, and why Callstack is building it to bridge exploratory agent behavior with deterministic replay across iOS and Android.
cover
Apr 14
·
Article

Agent React DevTools: Give AI Agents Access to React Internals

Agent React DevTools gives AI agents direct access to the React component tree, state, and performance data. Instead of relying only on UI snapshots, agents can now inspect what happens inside React and debug issues with proper context. This enables more reliable QA, better performance analysis, and deeper automation for React and React Native apps.
cover
Jan 29
·
Article

Announcing AI SDK Profiler for React Native

We introduced the AI SDK Profiler plugin for Rozenite DevTools. It captures OpenTelemetry spans emitted by the Vercel AI SDK, surfaces prompts, outputs, metadata, and latency, and works with any provider, on-device or cloud.
cover
Jul 28
·
Article

Introducing Rozenite: A Plugin Framework for React Native DevTools

Rozenite is a new open-source plugin framework for React Native DevTools, designed to help teams build custom debugging panels with ease. It supports TypeScript, React, React Native, and integrates with Expo, CLI, and Rock. With device-scoped views and isomorphic communication, Rozenite empowers developers to streamline observability and scale tooling fast.
No items found.