Treblle's API Catalog gives every team organization-wide visibility into what APIs exist, who owns them, how they are performing, and how consumers can integrate with them, updated automatically without a manual publishing process.
Treblle continuously scans source code repositories, gateways including Kong and AWS API Gateway, and live traffic to populate the catalog. Every API appears in the registry without requiring manual registration from engineering teams.
Each catalog entry is enriched with ownership data, current health metrics, documentation links, and usage statistics. Teams can see who owns an API, how it is performing, and who is consuming it from a single view.
Teams decide which APIs are available internally, to partners, or publicly. Published APIs get interactive documentation, OpenAPI spec downloads, collections, and SDKs generated automatically for consumers.
What is an API Catalog?
An API catalog is a centralized registry of all APIs an organization operates, enriched with metadata such as ownership, documentation, usage statistics, and current status. Without a catalog, API knowledge lives in scattered spreadsheets, wiki pages, and the memory of individual engineers. Teams duplicate work, consumers cannot find documentation, and security and governance teams cannot account for every surface they need to cover. A well-maintained catalog covers both internal APIs used between teams and external APIs published to partners or the public, and stays current automatically rather than requiring someone to remember to update a registry every time an endpoint ships or changes.
Organization-Wide Visibility
Large organizations routinely discover APIs they did not know existed when they run a security audit or try to decommission a service. Treblle's Centralized API Catalog eliminates this by building and maintaining the inventory automatically. Organization-Wide Access means every team, from engineering to security to product management, can see the full catalog with appropriate permissions. Ownership Visibility ties each API to the team and individual responsible for it, so 'who owns this?' has an answer that does not require asking around.
A single registry of all APIs across your organization, populated automatically from discovery and enriched with documentation, ownership, and usage data. The organization's source of truth for what APIs exist.
The full catalog is accessible to every team with appropriate permissions. Engineering, security, compliance, and product teams all work from the same registry without maintaining separate inventories.
Each API entry includes team and individual ownership resolved from repository and deployment metadata. No more 'who owns this endpoint?' conversations when an incident or audit requires an answer.
Consumer Publishing
Getting an API into a consumer's hands used to mean writing documentation, building a portal, generating a collection manually, and hoping the spec was current. Treblle handles all of this from a single publish action. Controlled API Publishing lets teams choose visibility per API. What consumers receive is interactive documentation they can use to make real API calls, an OpenAPI spec they can download, and collections and SDKs generated automatically, all from the same catalog entry that powers internal visibility.
Set visibility per API: internal only, partner-restricted, or publicly accessible. Publishing status is independent of the internal catalog entry, so all APIs are tracked regardless of external exposure.
Every published API gets interactive documentation that lets consumers make real API calls directly in the browser. No third-party tool or separate sandbox environment needed to test an integration.
Consumers can download the current OpenAPI specification for any published API directly from the catalog. The spec reflects actual production behavior, not a manually maintained document.
Generates request collections for testing tools and client SDKs in multiple languages automatically from each API's specification. Consumers start with working code, not a blank file.
Usage Data and API Access
A catalog that shows you what APIs exist but not how they are being used is missing half the picture. API Statistics in Treblle surface request volume, consumer count, error rates, and performance trends per catalog entry, so teams can see adoption patterns and health without switching to a separate analytics tool. Catalog API Access exposes this data programmatically, making the catalog a data source for internal developer platforms, CI/CD pipelines, and custom dashboards rather than just a web interface to visit.
Per-API usage metrics including request volume, unique consumer count, error rates, and latency trends. Usage data surfaces directly in each catalog entry without switching to a separate analytics view.
Exposes catalog metadata through an API. Integrate registry data into internal developer portals, CI/CD pipelines, or custom tooling without requiring teams to use the Treblle UI directly.
AI-Assisted Integration
Catalog entries are only useful if consumers can act on them. When a developer finds an API they want to integrate with, questions come immediately: how does authentication work for this specific API, what does this response field mean, how should I handle the rate limit headers. Treblle's AI Integration Assistant answers these questions in plain language using your actual API documentation and production behavior as the knowledge source, reducing the time from 'I found the API' to 'I have working code.'
Answers consumer integration questions using your API's actual documentation and observed production behavior. Reduces onboarding friction and support load for every API published in the catalog.
Treblle works best when working in unison. Check out other capabilities that will help you make the most out of your API landscape.
API Discovery
Know every API in your inventory before you secure it. Discovery feeds the baseline that shadow API detection measures against.
API Documentation
Auto-generated, always-current documentation that feeds the catalog's consumer-facing interactive docs, spec downloads, and SDK generation without a manual publishing step.
API Governance
Governance scores factor in compliance posture alongside design quality, performance, and security, giving a complete picture of each API's maturity.
All Systems Operational
Gartner: Magic Quadrant, 2025
Gartner AI API Strategy, 2025
Everest Group: Enterprise App Integration Platforms, 2026
