What is Nock?
A Node.js library that intercepts HTTP requests in tests, allowing you to test modules that make HTTP calls in isolation without hitting real external services.
Nock pricing
We don't have Nock's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Nock does
The capabilities that matter for api mocking, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Mocking mode
- Dynamic templating
- Stateful scenarios
- -
- Fault chaos injection
- -
- Openapi import
- -
- Proxy passthrough
- ✓
- Admin API
- -
- Deployment
- Embedded library
- Legacy protocol virtualization
- -
- Collaboration sharing
- -
- Ci cd integration
- -
- Open source
- ✓
- Market segment
- Dev tool
- Pricing model
- Open source
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Nock FAQ
Common questions about Nock, answered from independent, dated evidence.
What is Nock?
An open-source library that allows developers to test modules making HTTP requests without external dependencies by mocking server responses. It is indexed under API Mocking.
Source: https://github.com/pricing
Is Nock free to use?
Nock is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://github.com/pricing
Is Nock open source?
Yes. Nock is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Source: https://github.com/nock/nock
Nock alternatives
Other api mocking we track, ranked by the same independent score.
- BeeceptorCreate and manage mock API servers for testing and developmentmedium · 74%
- Mockoonmedium · 72%
- json-serverRapidly create a mock REST API from JSON data for development and testingmedium · 64%
- Mock Service Worker (MSW)A reusable API mocking library that intercepts network requests for testing and development across JavaScript environmentshigh · 79%
- WireMockAn open source tool for creating and testing mock APIslow · 17%
- Traffic ParrotEnables teams to mock external APIs and services locally during development and testingmedium · 72%
Compare Nock
Side by side against other api mocking, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Nock, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Dependent projects | 85 | 0.08 | 6.8 | ✓ |
| Release cadence | 93 | 0.07 | 6.3 | ✓ |
| Capabilities | 46 | 0.08 | 3.8 | ✓ |
| Security score | 54 | 0.05 | 2.9 | ✓ |
| Stars | 78 | 0.03 | 2.6 | ✓ |
| Development activity | 19 | 0.12 | 2.3 | ✓ |
| Integrations | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 3 | mediumsource · 2026-10-14 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 3 items | mediumsource · 2026-09-10 · 72% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Deployment: embedded_library · Open source: Yes · Mocking mode: dynamic_templating · Pricing model: open_source · Market segment: dev-tool · Proxy passthrough: Yes | mediumsource · 2026-10-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-10-14 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-14 · 95% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Scorecard | 5.4 | highsource · 2026-10-14 · 90% |
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=nock&per_page=100 · Last 12m: 0 | highsource · 2026-10-14 · 90% |
| Trust center | https://github.com/security | mediumsource · 2026-10-14 · 60% |
Is Nock the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Nock against the rest of the api mocking we index, using the same dated evidence weighted your way.
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