# BridgeFill

Canonical URL: http://localhost:3000/building/bridgefill
Published: 2026-09-22
Updated: 2026-09-22
Language: en

Schema Registry & LLM Codegen.


## The system

BridgeFill is a developer-time integration tool for API providers, consumers, and coding agents. A provider publishes an OpenAPI schema and a working code sample. A consumer can discover that contract and ask for integration files tailored to a language, framework, and use case. The [public repository](https://github.com/Krishnan9074/Bridgefill) includes an MCP interface, REST API, CLI, and developer dashboard.

## Contracts and change

The schema registry keeps version history. Its diff engine classifies breaking, warning, additive, and informational changes, then applies semantic versioning. Conflict checks focus on the endpoints a consumer uses, so an unrelated change need not block that integration. Generated files are validated against the published contract before they are returned.

## Implementation

The repository documents a TypeScript server with a memory backend for local development and PostgreSQL persistence as an option. It uses scoped JWTs and API keys for tool access and records audit events. The dashboard is a single HTML page served by the application. The README lists 13 MCP tools and a REST interface for registry, generation, and validation workflows.

## Generation and validation

When an LLM key is configured, generation can use a provider's code sample as a grounding example. Without one, the repository documents a deterministic fallback that still generates schema-grounded files. This is a useful boundary: code generation and contract validation are separate steps.

## Evidence still to add

The public source and local setup instructions are available. A live hosted deployment, usage figures, and performance measurements have not been independently verified.