# SMI Traffic Access Control

**Canonical:** https://apis.io/apis/service-mesh-interface/smi-traffic-access/  
**Provider:** Service Mesh Interface (SMI) — https://apis.io/providers/service-mesh-interface/  
**Documentation:** https://github.com/servicemeshinterface/smi-spec/blob/main/apis/traffic-access/v1alpha3/traffic-access.md

SMI Traffic Access Control is one of 4 APIs that [Service Mesh Interface (SMI)](https://apis.io/providers/service-mesh-interface/) publishes on the [APIs.io](https://apis.io/) network. This API exposes 1 JSON Schema definition. Tagged areas include Traffic Policy, Access Control, Authorization, Kubernetes CRD, and SMI.

Traffic Access Control defines the `TrafficTarget` resource, which associates a set of traffic rules with a service identity allocated to a group of pods. It is the authorization layer of SMI: which source identities may speak which protocols/routes to which destination identity. Per the spec, "a valid TrafficTarget must specify a destination, at least one rule, and at least one source."

## Machine-readable artifacts (6)

- **APIVersion**
- **Kind**
- **Specification** — https://github.com/servicemeshinterface/smi-spec/blob/main/apis/traffic-access/v1alpha3/traffic-access.md
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/service-mesh-interface/refs/heads/main/./json-schema/traffic-target-schema.json
- **Examples** — https://raw.githubusercontent.com/api-evangelist/service-mesh-interface/refs/heads/main/./examples/traffic-target-example.yaml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/service-mesh-interface/refs/heads/main/apis.yml

## Other Service Mesh Interface (SMI) APIs (3)

- [SMI Traffic Specs](https://apis.io/apis/service-mesh-interface/smi-traffic-specs/)
- [SMI Traffic Split](https://apis.io/apis/service-mesh-interface/smi-traffic-split/)
- [SMI Traffic Metrics](https://apis.io/apis/service-mesh-interface/smi-traffic-metrics/)

## Tags

Traffic Policy, Access Control, Authorization, Kubernetes CRD, SMI

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/service-mesh-interface/smi-traffic-access/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/service-mesh-interface/.