WasmEdge

WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices. WasmEdge is a CNCF sandbox project providing an LLVM-based AoT compiler for maximum performance, and supporting WASI extensions for non-blocking networking, database access, and AI inference via TensorFlow, PyTorch, and OpenVINO.

WasmEdge is listed with 5 APIs on the APIs.io network. Tagged areas include Cloud-Native, CNCF, Edge Computing, High Performance, and Runtime.

The WasmEdge catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

WasmEdge’s developer surface includes documentation, getting-started guide, engineering blog, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.5/100 thin ▬ flat Agent 1/100 human only Front door AI 3/6 light Heartbeat 100/100 alive self hosted · Apache-2.0 Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

5 APIs

Cloud-Native CNCF Edge Computing High Performance Runtime Serverless Wasm WebAssembly

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 30.5/100 · thin

Contract Quality 2.8 / 19

Developer Ergonomics 2.1 / 15

Access Clarity 1.9 / 15

Operational Transparency 3.5 / 10

Contract Governance 2.1 / 9

Discoverability 5.2 / 8

Regulatory Posture 1.6 / 15

Open Source Surface 10.0 / 10

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 75 points between them, because both conditional facets apply and carry 25 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 14.7 — up to +21.3 composite points Ask about this →
Access Clarity scores 12.8 — up to +17.4 composite points Ask about this →
Developer Ergonomics scores 14.3 — up to +17.1 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/wasmedge/apis.yml: open an issue on github.com/api-evangelist/wasmedge to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
OpenSSF Best Practices Badge Holders	standard	40.9 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 5

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

WasmEdge C API

The WasmEdge C API provides a low-level interface for embedding the WasmEdge runtime into C/C++ host applications. It exposes the full WasmEdge runtime capabilities including mo...

WasmEdge Rust SDK

The WasmEdge Rust SDK enables embedding WasmEdge WebAssembly functions in Rust host applications. It provides idiomatic Rust bindings for the WasmEdge C API, supporting module l...

WasmEdge Go SDK

The WasmEdge Go SDK provides Go language bindings for embedding the WasmEdge runtime in Go applications. It enables loading and executing WebAssembly modules from Go, defining h...

WasmEdge Node.js SDK

The WasmEdge Node.js SDK allows embedding and calling WebAssembly functions from Node.js applications. It provides bindings for executing Wasm modules within the WasmEdge runtim...

WasmEdge Plugin System

WasmEdge's plugin system enables extending the runtime with custom host function packages. Plugins can be developed in Rust or C/C++ and loaded at runtime, providing capabilitie...

WasmEdge API pricing

Not yet checked against WasmEdge's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against WasmEdge's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

WasmEdge Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

WasmEdge Rate Limits

5 limits

RATE LIMITS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

WasmEdge

1 quoted statement, read from WasmEdge's own page on 2026-11-10.

TERMS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

WasmEdge

2 quoted statements, read from WasmEdge's own page on 2026-11-10.

LICENSE

FinOps 1

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

WasmEdge Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Wasmedge Context

10 classes · 14 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

WasmEdge — jsonschema rules

5 rules · 3 warn-severity 2 info-severity

SPECTRAL

JSON Schema 1

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

WasmEdge Configuration

4 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

WasmEdge Config Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

WasmEdge Cli Example

3 fields

EXAMPLE

WasmEdge Rust Sdk Example

4 fields

EXAMPLE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

WasmEdge Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

JSONSchema

JSONSchema

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Vocabulary

JSONLD

JSONStructure

Vocabulary

Build 3

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

DomainSecurity

DomainSecurity

Operate 5

Status, limits, changes, and where to get help

RateLimits

IssueTracker

Releases

Slack

Discord

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

License

UsageTerms

DataLicense

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: wasmedge
name: WasmEdge
description: WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized
  applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices. WasmEdge is
  a CNCF sandbox project providing an LLVM-based AoT compiler for maximum performance, and supporting WASI extensions for
  non-blocking networking, database access, and AI inference via TensorFlow, PyTorch, and OpenVINO.
url: https://wasmedge.org
deliveryModel:
  model: self-hosted
  license: Apache-2.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wasmedge.png
tags:
- Cloud-Native
- CNCF
- Edge Computing
- High Performance
- Runtime
- Serverless
- Wasm
- WebAssembly
tags_raw:
- Cloud Native
- CNCF
- Edge Computing
- High Performance
- Runtime
- Serverless
- Wasm
- WebAssembly
created: '2026-03-26'
modified: '2026-05-03'
specificationVersion: '0.23'
type: Index
apis:
- aid: wasmedge:wasmedge-c-api
  name: WasmEdge C API
  description: The WasmEdge C API provides a low-level interface for embedding the WasmEdge runtime into C/C++ host applications.
    It exposes the full WasmEdge runtime capabilities including module instantiation, function invocation, memory access,
    and plugin management.
  humanURL: https://wasmedge.org/docs/embed/c/intro/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmedge.org/docs/embed/c/intro/
  - type: GitHubRepository
    url: https://github.com/WasmEdge/WasmEdge
  tags:
  - C API
  - Embeddings
  - Low-Level
  tags_raw:
  - C API
  - Embedding
  - Low Level
- aid: wasmedge:wasmedge-rust-sdk
  name: WasmEdge Rust SDK
  description: The WasmEdge Rust SDK enables embedding WasmEdge WebAssembly functions in Rust host applications. It provides
    idiomatic Rust bindings for the WasmEdge C API, supporting module loading, instantiation, function calls, host function
    definitions, and plugin integration.
  humanURL: https://wasmedge.org/docs/embed/rust/intro/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmedge.org/docs/embed/rust/intro/
  - type: GitHubRepository
    url: https://github.com/WasmEdge/wasmedge-rust-sdk
  tags:
  - Rust
  - SDK
  - Embeddings
  tags_raw:
  - Rust
  - SDK
  - Embedding
- aid: wasmedge:wasmedge-go-sdk
  name: WasmEdge Go SDK
  description: The WasmEdge Go SDK provides Go language bindings for embedding the WasmEdge runtime in Go applications. It
    enables loading and executing WebAssembly modules from Go, defining host functions, and managing WasmEdge configurations
    programmatically.
  humanURL: https://wasmedge.org/docs/embed/go/intro/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmedge.org/docs/embed/go/intro/
  - type: GitHubRepository
    url: https://github.com/second-state/WasmEdge-go
  tags:
  - Go
  - SDK
  - Embeddings
  tags_raw:
  - Go
  - SDK
  - Embedding
- aid: wasmedge:wasmedge-nodejs-sdk
  name: WasmEdge Node.js SDK
  description: The WasmEdge Node.js SDK allows embedding and calling WebAssembly functions from Node.js applications. It provides
    bindings for executing Wasm modules within the WasmEdge runtime from JavaScript, enabling high-performance compute from
    Node.js services.
  humanURL: https://wasmedge.org/docs/embed/node/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmedge.org/docs/embed/node/
  tags:
  - Node.js
  - JavaScript
  - SDK
  - Embeddings
  tags_raw:
  - Node.js
  - JavaScript
  - SDK
  - Embedding
- aid: wasmedge:wasmedge-plugin-system
  name: WasmEdge Plugin System
  description: WasmEdge's plugin system enables extending the runtime with custom host function packages. Plugins can be developed
    in Rust or C/C++ and loaded at runtime, providing capabilities like TensorFlow AI inference, image processing, database
    drivers, and WASI networking extensions.
  humanURL: https://wasmedge.org/docs/contribute/plugin/
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  properties:
  - type: Documentation
    url: https://wasmedge.org/docs/contribute/plugin/
  - type: GitHubRepository
    url: https://github.com/WasmEdge/WasmEdge
  tags:
  - Plugins
  - Extensions
  - TensorFlow
  - Artificial Intelligence
  tags_raw:
  - Plugins
  - Extensions
  - TensorFlow
  - AI
common:
- type: Plans
  url: plans/wasmedge-plans-pricing.yml
- type: RateLimits
  url: rate-limits/wasmedge-rate-limits.yml
- type: FinOps
  url: finops/wasmedge-finops.yml
- type: IssueTracker
  url: https://github.com/WasmEdge/WasmEdge/issues
- type: Releases
  url: https://github.com/WasmEdge/WasmEdge/releases
- type: SecurityPolicy
  url: https://github.com/WasmEdge/WasmEdge/blob/master/SECURITY-INSIGHTS.yml
- type: CodeOfConduct
  url: https://github.com/WasmEdge/WasmEdge/blob/master/docs/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/WasmEdge/WasmEdge/blob/master/docs/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/WasmEdge/WasmEdge/blob/master/LICENSE
- type: DomainSecurity
  url: security/wasmedge-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/second-state
- type: Website
  url: https://wasmedge.org/
- type: Documentation
  url: https://wasmedge.org/docs/
- type: GettingStarted
  url: https://wasmedge.org/docs/start/getting-started/
- type: GitHubOrganization
  url: https://github.com/WasmEdge
- type: GitHubRepository
  url: https://github.com/WasmEdge/WasmEdge
- type: Blog
  url: https://wasmedge.org/blog/
- type: Slack
  url: https://wasmedge.slack.com/
- type: Discord
  url: https://discord.gg/U4B5sFTkFc
- type: Vocabulary
  url: vocabulary/wasmedge-vocabulary.yml
- type: JSONLD
  url: json-ld/wasmedge-context.jsonld
- type: JSONSchema
  url: json-schema/wasmedge-config-schema.json
- type: JSONStructure
  url: json-structure/wasmedge-config-structure.json
- type: Vocabulary
  url: vocabulary/wasmedge-vocabulary.yml
- type: UsageTerms
  url: terms/wasmedge-terms-of-service.yml
- type: DataLicense
  url: data-license/wasmedge-data-license.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

WasmEdge API — frequently asked questions

Does WasmEdge have an API?

Yes. APIs.io lists 5 APIs from WasmEdge, including WasmEdge C API, WasmEdge Rust SDK and WasmEdge Go SDK, and 2 more.

How much does the WasmEdge API cost?

APIs.io lists 3 pricing plans for WasmEdge, with each plan's price, limits and inclusions under Pricing on this page.

Is the WasmEdge API ready for AI agents?

WasmEdge has a Kin Score of 30.5 out of 100 (thin) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-13.

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