API Intelligence
Discover, Map, and Understand
Every API Your System Owns
Distributed systems share a persistent problem: no one knows the full API surface area of what they own. Code Swan solves this with static analysis that automatically discovers every REST, gRPC, GraphQL, and async API your services expose and consume, no runtime agents, no manual documentation, no guesswork.
What Is API Surface Intelligence?
API surface intelligence is the automated discovery and mapping of every API endpoint a software system exposes and consumes, including which services call which APIs, which contracts have no known consumers, and where a breaking change would cascade. Unlike documentation that falls behind the moment it is written, API surface intelligence is derived directly from source code and stays current with every scan.
This answers a question that has historically required weeks of manual investigation across every role in an engineering team: what, exactly, does our system expose, and who depends on it?
The Problem Every Engineering Leader Recognizes
Microservices promised independence. In practice, they created invisible webs of API dependencies that no one has a complete picture of.
A familiar pattern
A developer changes a response field. Three downstream services silently break. The incident is attributed to "an unexpected dependency." The postmortem recommends "better documentation." Six months later, the same thing happens again.
This is not a people problem. It is a visibility problem. And it compounds directly with codebase size: a platform running 50 services has thousands of API interactions that no individual engineer, or team, can hold in their head.
How Code Swan Discovers Your APIs
Code Swan uses static analysis, scanning source code, routing definitions, framework annotations, and specification files, to build a complete, accurate map of your API surface. No agents are deployed. No traffic is captured. No changes are made to your running application.
What You Get: Complete API Visibility
Four outcomes engineering leaders see after a first Code Swan scan.
Every API Exposed and Consumed, Mapped Automatically
One scan produces a complete graph: which services expose which APIs, which clients call them, and the full dependency chain between them. The map every architecture review and platform migration needs, discovered in minutes, not weeks.
Contracts With No Known Consumers, Flagged Immediately
When Code Swan finds an endpoint with no callers anywhere in your codebase, it flags it. Orphaned contracts are dead code risk, unnecessary security surface area, and potential hidden dependencies from mobile clients or partner integrations.
AI Agents That Understand API Change Impact
Because Code Swan maps every API consumer and dependency into your AI tools via MCP, your agents can reason about the downstream impact of a code change, which contracts are affected, which callers are at risk, without you having to spell it out.
API Intelligence Delivered Directly Into Your AI Tools
Code Swan's MCP server exposes your complete API map, endpoints, consumers, ownership, change risk, inside AI coding assistants like Cursor, Claude, and GitHub Copilot. Real answers from real code, not hallucinated stubs.
Illustrative scenario
A platform team running 58 microservices scans their codebase with Code Swan. The scan surfaces 22 internal REST endpoints with zero inbound callers from any other service, four of them still authenticated, consuming compute, and included in security audits. Without Code Swan, this discovery requires weeks of manual investigation. With it, it is a line item in the next sprint.
Code Swan and Your Existing Catalog Tools
Already running an existing software catalog?
Code Swan acts as an automatic data source, supplying accurate, always-current API data to your catalog without manual entry. Your catalog stays current without anyone having to remember to update it. No YAML drift. No stale component definitions.
No catalog yet?
Code Swan provides this capability out of the box, with zero manual input. No plugins to configure, no templates to author. A single scan produces the API catalog your team has been meaning to build for two years.
Frequently Asked Questions
What is API surface intelligence?
API surface intelligence is the automated discovery and mapping of every API endpoint a software system exposes and consumes, including which services call which APIs, which contracts have no known consumers, and where a breaking change would cascade. It is derived directly from source code, not from documentation, and stays current as the codebase evolves.
What API protocols does Code Swan support?
Code Swan discovers REST APIs, gRPC services, GraphQL schemas, and async/event-driven APIs including Kafka topics and SQS queue consumers, all through static analysis of your source code and configuration files.
Can Code Swan work alongside our existing software catalog?
Yes. Code Swan can act as an automatic data source for any existing software catalog, supplying accurate, always-current API data without manual entry. For teams without an existing catalog, Code Swan provides this capability out of the box, with zero manual input required.
What does it mean when Code Swan flags an API with 'no known consumers'?
This means Code Swan found no callers for that endpoint anywhere in your codebase. Orphaned APIs accumulate technical debt, represent unnecessary security surface area, and may have hidden external callers, such as mobile clients or partner integrations, that were never captured in internal code.
How is Code Swan different from reading API documentation?
API documentation is a snapshot written by a human at a point in time that may or may not reflect the actual running code. Code Swan's API map is generated directly from source code on every scan and is therefore always accurate. Documentation can exist for APIs removed months ago and may be absent for APIs added last sprint.
Ready to Map Your API Surface?
One Code Swan scan gives your team, and your AI tools, a complete, accurate picture of every API your system owns. No manual work. No maintenance overhead.