The Powerduck Blog

API engineering, from the spec out

Product updates, engineering notes, and guides for designing, debugging, testing, mocking, and serving MCP tools from one OpenAPI spec.

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Mock Server 1 min read

Templating: Mockoon vs OpenAPI Examples

Quick answer Short answer: Rich templating is a mock designer's strength for bespoke, dynamic responses; a spec-driven mock uses the examples and response schemas you already author. The

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Mock Server 1 min read

Stateful Scenarios: Mockoon vs Powerduck

Quick answer Short answer: Both support stateful behavior, but the source differs. A dedicated mock sequences the states you design; a studio keeps the state tied to the contract and

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Mock Server 1 min read

Record and Replay vs Spec Mocks

Quick answer Short answer: Record-and-replay captures real traffic and plays it back, which is fast and limited to what happened; a spec mock is generated from the contract, so it

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Mock Server 1 min read

Mockoon Cloud vs Free Hub Mocks

Quick answer Short answer: A mock cloud is a paid collaboration layer for a separately maintained mock; a Hub hosts the mock and the docs together from the spec, so

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Mock Server 1 min read

Powerduck vs Mockoon: Which API Mocking Tool?

Quick answer Short answer: Mockoon is a dedicated, powerful mock designer; Powerduck generates the mock from the contract. The first gives fine manual control and drifts; the second keeps the

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Publish documentation 2 min read

Migrating from Redocly to Powerduck

Quick answer Short answer: The contract is already the valuable asset, so the migration is not a rewrite. Bring the OpenAPI file into the studio, validate it, and generate the

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Mock Server 4 min read

Powerduck vs Mockoon: OpenAPI Mock Servers

Quick answer: Mockoon is a well-liked desktop tool for designing mock APIs, with strong templating, rule matching, and a CLI for CI. Powerduck is a local-first studio that generates the

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Mock Server 1 min read

Mock Drift: Mockoon vs Contract Mocks

Quick answer Short answer: A mock drifts when it is maintained separately from the API. A contract mock is generated from the spec, so it cannot return a shape the

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Mock Server 1 min read

Mockoon Manual Routes vs OpenAPI Mocks

Quick answer Short answer: Hand-built routes are precise and a maintenance burden; spec-generated routes are correct by construction and update on save. For a changing API, the generated set is

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Publish documentation 1 min read

Redocly Pricing vs Free Hub Hosting

Quick answer Short answer: Redocly's open-source tools are free and its hosted tiers are priced per seat and per page; Powerduck keeps the desktop and Hub hosting free

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Publish documentation 1 min read

Multi-Language Code Samples Compared

Quick answer Short answer: Both produce code samples, but a reference generated from the contract derives cURL, Node, Python, and Go from the real operations and responses, so the samples

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Publish documentation 1 min read

Redocly Linting vs Powerduck Validation

Quick answer Short answer: Linting enforces a style guide and catches contract problems in CI; in-studio validation surfaces the same class of problems where you edit. The first is a

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