MockAPI Dog

MockAPI Dog is a free, no-signup tool for creating mock REST APIs and LLM streaming endpoints for development and testing. It helps developers prototype, test error handling, and validate AI integrations without setting up backend infrastructure.

Visitar Site

Overview

MockAPI Dog is a free tool for creating mock REST APIs and LLM streaming endpoints for development and testing. It is designed to let developers spin up endpoints quickly without signup, configuration files, or API keys.

The workflow is simple: generate an endpoint, choose a response type, and save. After that, the mock API is live immediately and can be copied into frontend prototypes, API tests, or AI integration experiments.

Features

No-signup endpoint creation

Create a mock endpoint without setting up accounts, API keys, or project files. The page flow is designed to get a usable URL in seconds.

REST and LLM mocking

Choose between conventional REST responses and LLM-style streaming endpoints for AI integration testing.

Streaming format support

Return JSON responses or simulate provider-like streaming for OpenAI, Anthropic, and generic formats.

Response and failure simulation

Use built-in controls for status codes, delays, random failures, and conditional errors to exercise error handling paths.

Built-in JSON editor

Edit JSON directly with syntax highlighting and validation before saving the mock endpoint.

HTTP method and CORS support

Support standard HTTP methods and CORS so endpoints can be used from browser-based clients and typical API workflows.

Use Cases

Frontend development
Build a UI against a stable mock endpoint while the real backend is still unavailable or in progress.
AI integration testing
Test chatbot or LLM-powered features with streaming responses before connecting to paid production APIs.
Error handling and edge cases
Check how an application handles 404s, 500s, artificial latency, and other failure conditions.
Rapid prototyping
Create quick API demos or proofs of concept without setting up infrastructure or authentication.
Training and education
Provide consistent endpoints for lessons, exercises, or workshops where students need predictable API behavior.

Pros and Cons

Pros

No signup or authentication is required to get started.
Supports both REST mocks and LLM streaming mocks in one tool.
Includes response simulation features such as delays, random failures, and conditional errors.
Supports standard HTTP methods and CORS for common integration workflows.
Described as completely free with no credit card requirement.

Cons

The site positions the service for development, testing, and prototyping rather than production applications.
Inactive endpoints may be cleaned up periodically, so the service is not described as permanent storage.

FAQ

Do I need to create an account?

No. The site says MockAPI Dog requires no signup or authentication, so you can start creating mock endpoints immediately.

Is it really free?

Yes, the site describes the service as completely free, with no hidden costs, premium tiers, usage limits, or credit card requirement.

Can I use this for production?

MockAPI Dog is positioned for development, testing, and prototyping rather than live production use. The FAQ recommends production-grade APIs for live applications.

What LLM providers are supported?

The site says it supports OpenAI format, Anthropic format, and generic streaming formats, with mock responses that mimic provider streaming behavior.

How long do endpoints stay active?

Endpoints remain active as long as they are being used. The site notes that inactive endpoints may be cleaned up periodically to maintain service quality.

Quick Facts

Category: Developer Tool
Primary use: Mock REST APIs and LLM streaming endpoints
Access: No signup required
Cost: Free
Supported API styles: REST, OpenAI-style streaming, Anthropic-style streaming, generic streaming
Source domain: mockapi.dog

Alternativas ao MockAPI Dog

OpenAI Agents SDK

A lightweight JavaScript/TypeScript framework for building multi-agent workflows and voice agents. It supports sandboxed agents, handoffs, tools, tracing, and realtime agent patterns.

Lollipop

Lollipop 是一款面向求职者的 AI 面试官工具，提供语音模拟面试、岗位 JD 解析、简历润色和结构化评估报告。它适合用于正式面试前的练习、自我评估和投递准备。

LiteLLM

LiteLLM provides an OpenAI-compatible way to call and manage 100+ LLMs through a Python SDK or proxy server. It helps teams route requests, track spend, and work across multiple providers from one interface.

Langfuse

Langfuse is an open-source AI engineering platform for tracing, evaluating, and improving LLM applications and agents. It combines observability, prompt management, experiments, and human annotation in one workflow.

ImagePackAI

ImagePackAI is a web-based AI image generator that creates images from text prompts or reference images using third-party models. It uses one-time credit packs and lets users adjust key generation settings before downloading results.

中转API

中转API是一个 AI 接口服务网站，提供多种 AI 模型的价格信息和企业级接口服务。页面强调安全稳定、低延迟和高并发，并提到灵活计费方案与优惠套餐。