Securing the last mile between Agents & APIs
Govern how AI agents design, build, and execute against your APIs.
Innovation & Security Hand in Hand
As enterprises move toward an AI-driven future, a new security challenge is emerging: how to safely allow AI agents to interact with core business systems without losing control.
APIs have long been the backbone of digital transformation. Today, they have become something more critical—they are now the execution layer for agentic AI, enabling autonomous systems to discover, invoke, and orchestrate business services. This creates a new “last mile” risk, where AI agents directly interact with enterprise data and workflows.
42Crunch was built to secure this layer.
Our proven end-to-end API security platform, enables organizations and governments worldwide to enforce security and governance across the entire API lifecycle—from design and development through testing and runtime protection. By embedding security directly into API contracts and enforcing policies automatically at scale, 42Crunch ensures APIs are secure by design and continuously protected in production.
Now, as AI agents become the primary consumers of APIs, 42Crunch has extended this API security foundation to deliver last-mile security for the AI enterprise. Through deterministic guardrails across design, build and runtime, organizations can ensure that AI-generated code is both tested and remediated prior to deployment. Furthermore, the agentic AI interactions with enterprise systems remain governed and controlled at runtime.
In a world where AI is executing business logic, 42Crunch provides the security control plane that ensures innovation does not come at the cost of trust.
Trusted by over 2 million developers and security teams at 1000s of enterprises












Backed and Led by
Our leadership team and investors have been at the forefront of the API and security industry for the past twenty years, having successfully led teams at companies such as Microsoft, Oracle, Akamai, Attivo Networks, Axway, Vordel, Layer 7 and Fastly.
Endorsed By Analysts
"By implementing automated checks on the source code and configuration being deployed through the pipeline as well as the resulting software, you can detect new and updated APIs and ensure that they are properly secured and/or managed. An example of a product that implements this kind of discovery is 42Crunch API Security Platform."
Gary Olliffe
Distinguished VP Analyst, Gartner
"42Crunch’s ability to secure
both the CI/CD pipeline &
the runtime environment
makes it a compelling
candidate for any
API security project."
Rik Turner
Principal Analyst, Omdia
"Organizations can expect a streamlined deployment process that translates into rapid time-to-value, making 42Crunch a strategic partner in ensuring API security for the future."
Christopher M. Steffen
VP of Research, Information Security, Risk and Compliance Management, EMA
"With a clear roadmap focused on developer productivity, automation, and scalable security governance, 42Crunch is a compelling choice for enterprises prioritising API security-by-design."
Alexei Balaganski
Lead Analyst & CTO, KuppingerCole Analysts
Communities
APISecurity.io, curated by 42crunch, is the number 1 community website for all things related to API security.
Our daily news and API Security newsletter cover the latest breaches, vulnerabilities, standards, best practices, regulations, and technology.
Certifications & Associations
We believe in the power of community.
Our involvement in the OpenAPI initiative is helping to contribute to the collective standards around API.
As an active participant in the OWASP Foundation we contribute to the workings of the global security community through its regional chapters and global conferences.
We take protecting data seriously.
Our services are built to meet the most rigorous industry security standards.
42Crunch is a member of the Microsoft Intelligent Security Association (MISA). 42Crunch has integrated with Microsoft Sentinel to provide enterprises with end-to-end API protection and visibility, critical
to the success of their API-driven digital initiatives.
Office Locations
San Francisco
Dublin
London
Montpellier
Sydney
ebook
API Security: A Blueprint for Success
Secure Your APIs Today
#1 API security platform