What is backstopper?

fieldju/backstopper — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2021-12-20

Audience · developerComplexity · 3/5DormantSetup · moderate

Mindmap

mindmap
  root((backstopper))
    What it does
      Standardizes error format
      Hides stack traces
      Adds unique error IDs
    Tech stack
      Java
      Spring Boot
      Jersey
    Use cases
      Consistent REST API errors
      Shared error sets across microservices
      Auto-convert validation failures
    Audience
      Backend developers
      API teams
    Setup
      Define error enum
      Integrate with framework

mindmap root((backstopper)) What it does Standardizes error format Hides stack traces Adds unique error IDs Tech stack Java Spring Boot Jersey Use cases Consistent REST API errors Shared error sets across microservices Auto-convert validation failures Audience Backend developers API teams Setup Define error enum Integrate with framework

What do people build with it?

USE CASE 1

Return a consistent, predictable error format across every API endpoint.

USE CASE 2

Automatically convert Java validation annotation failures into standard API errors.

USE CASE 3

Give every error a unique ID that ties the API response to detailed application logs.

USE CASE 4

Share a common set of core errors across multiple microservices.

What is it built with?

JavaSpring BootJerseySpring WebFlux

How does it compare?

	fieldju/backstopper	0verflowme/alarm-clock	0xhassaan/nn-from-scratch
Stars	—	—	0
Language	—	CSS	Python
Last pushed	2021-12-20	2022-10-03	—
Maintenance	Dormant	Dormant	—
Setup difficulty	moderate	easy	moderate
Complexity	3/5	2/5	4/5
Audience	developer	vibe coder	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 1h+

Requires defining your full set of API errors up front and wiring the framework integration.

The README does not state a license.

Copy-paste prompts

Prompt 1

Show me how to define a custom error enum for Backstopper in a Spring Boot API.

Prompt 2

Help me integrate Backstopper with Jersey so validation failures return standard errors.

Prompt 3

How do I set up Backstopper so every API error includes a unique lookup ID in the logs?

Prompt 4

Write a shared 'core errors' setup in Backstopper that multiple microservices can reuse.

Frequently asked questions