DEVELOPERS

Build with
Tessen Intelligence.

Build through Tessen Platform, manage your environment in Console, and explore coding intelligence through Project ZERO.

Open Platform
API

APIs & documentation

Use Platform for authoritative endpoint documentation, model availability, request formats and current limits. Confirm the endpoint you are authorized to call rather than copying an unverified SDK example.

Explore APIs & documentation
AUTHENTICATION

Identity, projects & access

Follow the supported identity flow and protect project credentials. Do not embed API secrets in public clients or repositories. The applicable developer documentation determines supported authentication methods.

Open Console
MODELS

Model families

H1, Z1 and Z1 Code have distinct roles and access policies. Access is subject to the model family and entitlement enabled for your project.

Explore Model families
ZERO

ZERO & Tessen Code

ZERO is the coding agent; ZERO Coder is a distinct model-development initiative. Code surfaces and agent availability should be checked against their current release state.

Explore ZERO & Tessen Code
INTEGRATIONS

Tools & integrations

Connect authorized sources and tools with an explicit permission model. Use the integrations and SDKs documented for your current release.

Explore Tools & integrations
BILLING

Usage & commercial conditions

Metered access and credits must follow the actual plan, wallet and pricing shown for the authorized service. Review current pricing and allowances before enabling usage.

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PROJECT-ZERO

Project Zero preview

ZERO Alpha is a promotional developer program for coding intelligence. Activation and requests depend on eligibility, entitlement and shared capacity.

Explore Project ZERO
SUPPORT

Status & support

The local status page has no connected live monitoring source. For operational help, use the documented Platform channels or contact Tessen.

Explore Status & support
START WITH AUTHORIZED ACCESS

One platform.
One legal center.

Begin in Platform, confirm your project and permissions, consult the current documentation and evaluate a bounded request. Developer services use the Tessen Legal Center; there is no competing legal center here.

Open Platform Developer Terms