Ambassador · Rate Limits

Ambassador Rate Limits

Ambassador Edge Stack and Emissary-Ingress are self-hosted Kubernetes ingress controllers, so request-rate behavior is determined by the operator's own rate-limit policies (RateLimitService, RateLimit CRDs) configured against the bundled Envoy data plane. Edge Stack ships with a built-in rate-limit service supporting per-route, per-IP, and per-header limits; Emissary integrates with external rate-limit services. There are no public per-tier API throttle numbers because the gateway runs in the customer's cluster.

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

It captures 2 rate-limit definitions, measuring varies.

The profile also includes 4 backoff/retry policies defined and response codes documented for throttled and serviceUnavailable.

Tagged areas include Rate Limiting, API Gateway, Kubernetes, Ambassador, and Gravitee.

2 Limits Throttle: 429
Rate LimitingAPI GatewayKubernetesAmbassadorGravitee

Limits

Self-hosted Envoy rate limits customer-configured
varies
configured by RateLimit CRDs in the customer cluster
Edge Stack and Emissary-Ingress provide rate-limit primitives via Envoy; throughput is bounded by the customer's data-plane resources (replicas, CPU, memory).
Edge Stack RateLimitService customer-configured
varies
configured per RateLimit CRD
Per-route, per-source-IP, per-header limits; supports time windows of seconds, minutes, hours.

Policies

Self-hosted operator responsibility
Customer operates the gateway in their own cluster, so capacity and rate-limit values are controlled by their CRD configuration, not by the vendor.
429 + Retry-After
Edge Stack RateLimitService returns HTTP 429 when configured thresholds are exceeded; include Retry-After in the response header per RFC 6585.
Sidecar scaling
Throughput scales with the number of Ambassador/Envoy replicas; horizontally scale the gateway deployment to absorb additional load.
External RLS
Emissary-Ingress integrates with external Envoy-compatible RateLimitService implementations for advanced policy.

Sources

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/ambassador-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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