Scalar · Rate Limits

Scalar Api Rate Limits

Scalar does not publish fixed numeric rate limits. The open-source components (API Reference renderer, API Client, CLI) run on your own infrastructure and are bounded only by your hardware. On the hosted platform, usage is shaped by plan quotas rather than a per-minute request cap - for example the Free tier caps the registry at 3 APIs and includes 50 Agent Scalar credits, while Pro includes 500 Agent credits. The public registry read CDN (registry.scalar.com) serves published documents as static content and does not document a per-client request limit. The AI Agent / MCP is metered by Agent Scalar credits.

Scalar Api Rate Limits is the machine-readable rate-limit profile for Scalar on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 5 rate-limit definitions, measuring apis, credits, and requests.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include API Documentation, Registry, Open Source, Rate Limiting, and Quotas.

5 Limits Throttle: 429
API DocumentationRegistryOpen SourceRate LimitingQuotas

Limits

Registry APIs (Free) account
apis
3
The Free hosted tier allows up to 3 APIs in the registry; Pro is unlimited.
Agent Credits (Free) account
credits
50
Free tier includes 50 Agent Scalar credits per period.
Agent Credits (Pro) account
credits
500
Pro tier includes 500 Agent Scalar credits per period.
Registry Read CDN public
requests
not published
Published documents are served as static content from registry.scalar.com; no documented per-client cap.
Self-Hosted Components deployment
requests
hardware-bound
The MIT-licensed renderer, API Client, and CLI run on your own infrastructure.

Policies

Plan Quotas
Hosted usage is governed by plan allowances (registry APIs, editor seats, Agent credits) rather than a per-minute request rate.
Backoff Strategy
Clients of the registry read CDN should implement exponential backoff with jitter and honor Retry-After on any 429 responses.

Sources