wasmCloud

wasmCloud is a CNCF incubating platform for building, managing, and scaling distributed applications using WebAssembly components. It provides a runtime that manages the lifecycle of WebAssembly actors and capability providers, enabling developers to write portable business logic that connects to infrastructure capabilities like HTTP servers, messaging, key-value stores, and databases through a declarative linking model based on WebAssembly Interface Types (WIT).

wasmCloud publishes 2 APIs on the APIs.io network: Control Interface API and Application Deployment Manager (wadm) API. Tagged areas include Cloud Native, CNCF, Distributed Systems, Incubating, and Runtime.

The wasmCloud catalog on APIs.io includes 3 event-driven AsyncAPI specifications, 1 JSON-LD context, and 2 Spectral governance rulesets.

wasmCloud’s developer surface includes documentation, getting-started guide, engineering blog, changelog, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

54.3/100 developing ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

5 APIs

Cloud NativeCNCFDistributed SystemsIncubatingRuntimeWasmWebAssemblyWIT

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 54.3/100 · developing

Contract Quality 19.6 / 25

Developer Ergonomics 5.2 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 6.8 / 13

Governance 7.5 / 12

Discoverability 7.2 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/wasmcloud: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

wasmCloud Control Interface API

The wasmCloud control interface provides a NATS-based API for managing the wasmCloud lattice. It supports operations for starting and stopping actors and providers, establishing...

wasmCloud Application Deployment Manager (wadm) API

wadm provides a declarative application deployment API for wasmCloud. Applications are defined as YAML manifests specifying components, capability providers, and their links. wa...

wasmCloud wash CLI

wash (WAsmcloud SHell) is the comprehensive command-line tool for developing, building, deploying, and managing wasmCloud applications and WebAssembly components. It bundles a w...

wasmCloud WIT Interfaces

wasmCloud interfaces are defined using WebAssembly Interface Type (WIT), the open standard interface description language maintained as part of the W3C WebAssembly Component Mod...

wasmCloud Kubernetes Operator

The wasmCloud Kubernetes Operator enables running wasmCloud infrastructure natively on Kubernetes clusters. It deploys wasmCloud hosts as Kubernetes workloads and bridges the Ku...

Pricing Plans 1

Published pricing tiers and plan structures.

Wasmcloud Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Wasmcloud Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Examples 3

Example request and response payloads for these APIs.

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 6

Reference material describing how the API behaves

Documentation

AsyncAPI

AsyncAPI

AsyncAPI

JSONSchema

JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LlmsText

LlmsText

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

JSONStructure

JSONStructure

Vocabulary

Vocabulary

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Community

Community

ChangeLog

ChangeLog

Slack

Slack

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 5

Properties that don't map to a standard resource type

KubernetesCRD

KubernetesCRD

KubernetesCRD

KubernetesCRD

KubernetesCRD

Source (apis.yml)

aid: wasmcloud
name: wasmCloud
description: wasmCloud is a CNCF incubating platform for building, managing, and scaling distributed applications using WebAssembly
  components. It provides a runtime that manages the lifecycle of WebAssembly actors and capability providers, enabling developers
  to write portable business logic that connects to infrastructure capabilities like HTTP servers, messaging, key-value stores,
  and databases through a declarative linking model based on WebAssembly Interface Types (WIT).
url: https://wasmcloud.com
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wasmcloud.png
tags:
- Cloud Native
- CNCF
- Distributed Systems
- Incubating
- Runtime
- Wasm
- WebAssembly
- WIT
created: '2026-03-16'
modified: '2026-05-03'
specificationVersion: '0.19'
type: Index
apis:
- aid: wasmcloud:wasmcloud-control-api
  name: wasmCloud Control Interface API
  description: The wasmCloud control interface provides a NATS-based API for managing the wasmCloud lattice. It supports operations
    for starting and stopping actors and providers, establishing links between components, querying host inventories, and
    managing application deployments. The wash CLI and wasmCloud dashboard interact with hosts through this interface.
  humanURL: https://wasmcloud.com/docs/hosts/lattice-protocols/control-interface/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmcloud.com/docs/hosts/lattice-protocols/control-interface/
  - type: Reference
    url: https://wasmcloud.com/docs/concepts/
  - type: AsyncAPI
    url: asyncapi/wasmcloud-control-asyncapi.yml
  - type: AsyncAPI
    url: asyncapi/wasmcloud-lattice-events-asyncapi.yml
  tags:
  - Control API
  - Lattice Management
  - NATS
- aid: wasmcloud:wasmcloud-wadm-api
  name: wasmCloud Application Deployment Manager (wadm) API
  description: wadm provides a declarative application deployment API for wasmCloud. Applications are defined as YAML manifests
    specifying components, capability providers, and their links. wadm manages the desired state of applications across the
    lattice, handling scaling, updates, and self-healing through reconciliation loops using the Open Application Model format.
  humanURL: https://wasmcloud.com/docs/ecosystem/wadm/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmcloud.com/docs/ecosystem/wadm/
  - type: Reference
    url: https://wasmcloud.com/docs/ecosystem/wadm/api/
  - type: GitHubRepository
    url: https://github.com/wasmCloud/wadm
  - type: JSONSchema
    url: json-schema/wasmcloud-manifest-schema.json
  - type: AsyncAPI
    url: asyncapi/wasmcloud-wadm-asyncapi.yml
  - type: JSONSchema
    url: json-schema/wasmcloud-oam-manifest-schema.json
  tags:
  - Application Management
  - Declarative
  - Deployment
  - OAM
- aid: wasmcloud:wasmcloud-wash-cli
  name: wasmCloud wash CLI
  description: wash (WAsmcloud SHell) is the comprehensive command-line tool for developing, building, deploying, and managing
    wasmCloud applications and WebAssembly components. It bundles a wasmCloud host, NATS server, and wadm for local development,
    and supports publishing components to OCI registries and managing remote lattices.
  humanURL: https://wasmcloud.com/docs/cli/wash/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmcloud.com/docs/cli/wash/
  - type: GettingStarted
    url: https://wasmcloud.com/docs/getting-started/
  - type: GitHubRepository
    url: https://github.com/wasmCloud/wash
  - type: ChangeLog
    url: https://github.com/wasmCloud/wash/releases
  tags:
  - CLI
  - Developer Tools
  - WebAssembly
- aid: wasmcloud:wasmcloud-interfaces
  name: wasmCloud WIT Interfaces
  description: wasmCloud interfaces are defined using WebAssembly Interface Type (WIT), the open standard interface description
    language maintained as part of the W3C WebAssembly Component Model. wasmCloud supports WASI 0.2 interfaces as well as
    wasmCloud-specific interfaces for capability providers covering HTTP, messaging, key-value, blobstore, and other infrastructure
    concerns.
  humanURL: https://wasmcloud.com/docs/concepts/interfaces/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmcloud.com/docs/concepts/interfaces/
  - type: Reference
    url: https://wasmcloud.com/docs/reference/wasi/support/
  - type: GitHubRepository
    url: https://github.com/wasmCloud/wasmCloud
  tags:
  - Interfaces
  - WASI
  - WebAssembly
  - WIT
- aid: wasmcloud:wasmcloud-kubernetes-operator
  name: wasmCloud Kubernetes Operator
  description: The wasmCloud Kubernetes Operator enables running wasmCloud infrastructure natively on Kubernetes clusters.
    It deploys wasmCloud hosts as Kubernetes workloads and bridges the Kubernetes control plane with the wasmCloud lattice,
    enabling seamless integration with existing Kubernetes tooling and GitOps workflows. Defines CRDs for Hosts, Artifacts,
    Workloads, WorkloadDeploments, and WorkloadReplicaSets under the runtime.wasmcloud.dev group.
  humanURL: https://wasmcloud.com/docs/deployment/k8s/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmcloud.com/docs/deployment/k8s/
  - type: GitHubRepository
    url: https://github.com/wasmCloud/wasmcloud-operator
  - type: KubernetesCRD
    url: crd/runtime.wasmcloud.dev_hosts.yaml
  - type: KubernetesCRD
    url: crd/runtime.wasmcloud.dev_artifacts.yaml
  - type: KubernetesCRD
    url: crd/runtime.wasmcloud.dev_workloads.yaml
  - type: KubernetesCRD
    url: crd/runtime.wasmcloud.dev_workloaddeployments.yaml
  - type: KubernetesCRD
    url: crd/runtime.wasmcloud.dev_workloadreplicasets.yaml
  tags:
  - Kubernetes
  - Operator
  - Deployment
common:
- type: DomainSecurity
  url: security/wasmcloud-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/wasmcloud
- type: Website
  url: https://wasmcloud.com
- type: Documentation
  url: https://wasmcloud.com/docs/
- type: GettingStarted
  url: https://wasmcloud.com/docs/getting-started/
- type: Blog
  url: https://wasmcloud.com/blog/
- type: Community
  url: https://wasmcloud.com/community/
- type: GitHubOrganization
  url: https://github.com/wasmCloud
- type: GitHubRepository
  url: https://github.com/wasmCloud/wasmCloud
- type: ChangeLog
  url: https://github.com/wasmcloud/wasmcloud/releases
- type: Slack
  url: https://slack.wasmcloud.com/
- type: AsyncAPI
  url: asyncapi/wasmcloud-control-asyncapi.yml
- type: AsyncAPI
  url: asyncapi/wasmcloud-wadm-asyncapi.yml
- type: AsyncAPI
  url: asyncapi/wasmcloud-lattice-events-asyncapi.yml
- type: JSONSchema
  url: json-schema/wasmcloud-manifest-schema.json
- type: JSONSchema
  url: json-schema/wasmcloud-oam-manifest-schema.json
- type: JSONLD
  url: json-ld/wasmcloud-context.jsonld
- type: JSONStructure
  url: json-structure/wasmcloud-oam-manifest-structure.json
- type: Vocabulary
  url: vocabulary/wasmcloud-vocabulary.yml
- type: KubernetesCRD
  url: crd/runtime.wasmcloud.dev_hosts.yaml
- type: KubernetesCRD
  url: crd/runtime.wasmcloud.dev_artifacts.yaml
- type: KubernetesCRD
  url: crd/runtime.wasmcloud.dev_workloads.yaml
- type: KubernetesCRD
  url: crd/runtime.wasmcloud.dev_workloaddeployments.yaml
- type: KubernetesCRD
  url: crd/runtime.wasmcloud.dev_workloadreplicasets.yaml
- type: LlmsText
  url: https://wasmcloud.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

wasmCloud

APIs 5

Pricing Plans 1

Rate Limits 1

FinOps 1

Event Specifications 3

Semantic Vocabularies 1

Spectral Rules 2

JSON Schema 2

JSON Structure 1

Examples 3

Security Posture 1

Kubernetes CRDs 5

runtime.wasmcloud.dev artifacts

runtime.wasmcloud.dev hosts

runtime.wasmcloud.dev workloaddeployments

runtime.wasmcloud.dev workloadreplicasets

runtime.wasmcloud.dev workloads

Get Started 1

Documentation 6

Agent Surfaces 1

Design & Contract 3

Build 2

Access & Security 1

Operate 3

Company 3

Other 5

Source (apis.yml)