Scalar
API documentation, SDK generation, and testing platform
- Also known as
- scalar
Available worldwide · Popular in: US
What is Scalar?
Transforms OpenAPI specifications into interactive API documentation and type-safe client SDKs. Provides a web-based REST client for API testing, mock server capabilities, and collaborative tools for API teams. Available as open-source or managed hosting.
Scalar pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free tier available. From $150/month for Pro or $600/month for Business, with yearly billing discounts (2 months free).
Free
Free- apis
- 3
- sdks
- 1
- sdk_endpoints
- 25
- agent_scalar_credits
- 50
- Hosted OpenAPI docs
- Built-in API client
- Landing pages
- 1 editor seat
Pro
- apis
- 15
- sdks
- 1
- sdk_endpoints
- 100
- agent_scalar_credits
- 500
- Hosted MCP servers
- 5 editor seats
- Access groups included
- Volume discounts available
Business
- apis
- 25
- sdks
- 1
- sdk_endpoints
- 250
- agent_scalar_credits
- 2000
- SSO and subpath hosting
- 10 editor seats
- Volume discounts available
Enterprise
Contact sales- apis
- unlimited
- sdk_endpoints
- custom
- Unlimited APIs and custom SDK sizes
- Priority support and SLAs
- SDK and MCP migration services
- Dedicated Slack/Teams channel
Add-ons
- Additional SDK (Pro)$150/mo
- Additional SDK (Business)$600/mo
What Scalar does
The capabilities that matter for api development tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- REST client
- ✓
- GraphQL support
- ✓
- gRPC support
- ✓
- Mock servers
- ✓
- Automated / contract testing
- -
- Team collaboration & sharing
- ✓
- Doc generation
- ✓
- OpenAPI / spec import
- ✓
- CI integration / CLI
- ✓
Platform & deployment
Independently observed- CLI
- macOS
- Web
- Linux
- Windows
- Cloud / SaaS
- Self-hosted
Integrations (8)
Independently observed- FastAPI•
- ASP.NET Core•
- Hono•
- Elysia•
- Hapi•
- Docker•
- Docusaurus•
- Agent
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Scalar FAQ
Common questions about Scalar, answered from independent, dated evidence.
What is Scalar?
An open-source platform for building API documentation sites that includes automatically generated SDKs, a browser-based API client, and API registry capabilities. Supports OpenAPI and AsyncAPI specifications. It is indexed under API Development Tools.
Is Scalar free to use?
Scalar is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. A commercial or hosted edition starts at $72 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.
Source: https://scalar.com
What platforms does Scalar support?
We have confirmed browser-based access to Scalar. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.
Can Scalar be self-hosted?
Yes. Scalar can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.
What security certifications does Scalar have?
We have independently confirmed SOC 2 and GDPR for Scalar. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Scalar not holding them. Always confirm compliance directly before you rely on it.
Source: https://scalar.com/security
Is Scalar open source?
Yes. Scalar 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/scalar/scalar
Where is Scalar available?
Scalar is available worldwide. Its primary market is the United States.
Source: https://scalar.com
Scalar alternatives
Other api development tools we track, ranked by the same independent score.
- ApidogAn integrated platform for designing, testing, and documenting APIs with built-in AI assistance and real-time team collaborationmedium · 73%
- RedoclyTools for creating, validating, and managing API specifications and documentation across teamshigh · 76%
- Swagger UIInteractive API documentation generator from OpenAPI specificationshigh · 76%
- InsomniaCross-platform API client supporting multiple protocolshigh · 75%
- PostmanAn AI-powered API platform for developing, testing, and managing APIs at enterprise scalemedium · 73%
- curlTransfer data across the internet using a command-line tool or librarymedium · 51%
Compare Scalar
Side by side against other api development tools, 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 Scalar, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 74 | 0.17 | 12.9 | ✓ |
| Capabilities | 92 | 0.10 | 9.1 | ✓ |
| Development activity | 63 | 0.12 | 7.6 | ✓ |
| Release cadence | 98 | 0.07 | 6.6 | ✓ |
| Pricing transparency | 100 | 0.05 | 5.3 | ✓ |
| Security posture | 50 | 0.09 | 4.4 | ✓ |
| Reliability | 50 | 0.05 | 2.7 | ✓ |
| Stars | 79 | 0.03 | 2.6 | ✓ |
| Integrations | 26 | 0.05 | 1.4 | ✓ |
| Price level | 25 | 0.04 | 1.0 | ✓ |
| Dependent projects | 5 | 0.08 | 0.4 | ✓ |
| Security score | 0 | 0.05 | 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 | 100 | mediumsource · 2026-09-10 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 7 items | mediumsource · 2026-09-10 · 66% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Api docs, Mock server, Rest client, Grpc support, Collaboration, Ci integration, Openapi import, Graphql support | mediumsource · 2026-09-10 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 7 | mediumsource · 2026-09-10 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | TypeScript | highsource · 2026-09-10 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-09-10 · 99% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | mediumsource · 2026-09-10 · 50% |
Pricing
Release
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-05 · 60% |
Security
| Attribute | Value | Evidence |
|---|---|---|
| Disclosure policy | Yes | mediumsource · 2026-08-01 · 60% |
| Gdpr | Yes | highsource · 2026-08-14 · 75% |
| Soc2 | Yes | highsource · 2026-08-05 · 75% |
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40scalar%2Fhono-api-reference&per_page=100 · Last 12m: 0 | highsource · 2026-09-10 · 90% |
| Trust center | https://scalar.com/security | mediumsource · 2026-09-10 · 60% |
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