Wasmer

Wasmer is a WebAssembly runtime, package registry, and edge platform. The Wasmer Registry stores and distributes WebAssembly packages and namespaces, Wasmer Edge deploys those packages as auto-scaling apps, and the wasmer CLI and wasmer.sh interact with the platform through a single public GraphQL API at registry.wasmer.io/graphql.

Wasmer publishes 2 APIs on the APIs.io network, including Graph QL API, and 1 more. Tagged areas include WebAssembly, Wasm, Registry, Edge, and Runtime.

Wasmer’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.6/100 thin ▬ flat Agent 25/100 agent aware Front door AI 3/6 light open core · MIT Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

1 published contract

WebAssembly Wasm Registry Edge Runtime

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 36.6/100 · thin

Contract Quality 9.6 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 5.4 / 15

Operational Transparency 3.0 / 10

Contract Governance 0.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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

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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. 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/.

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 github.com/api-evangelist/wasmer: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Wasmer CLI

The wasmer command-line client (wasmer login, publish, deploy, run, ssh) - a first-class consumer of the Registry GraphQL API that wraps publish and Edge deployment workflows.

Wasmer Graph QL API

The Graph QL API from Wasmer — 1 operation(s) for graph ql.

Open Collections 3

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Wasmer Registry GraphQL API

OPEN COLLECTION

Wasmer Registry GraphQL API

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

Wasmer Registry GraphQL API

Representative GraphQL schema for the [Wasmer](https://wasmer.io) Registry and Edge

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Wasmer Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Wasmer Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Wasmer Finops

FINOPS

Security Posture 3

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

Wasmer Authentication

http · 1 scheme

SECURITY

Wasmer Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Wasmer Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Wasmer Agentic Access

2 operations · 1 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: wasmer
url: https://raw.githubusercontent.com/api-evangelist/wasmer/refs/heads/main/apis.yml
name: Wasmer
kind: company
description: Wasmer is a WebAssembly runtime, package registry, and edge platform. The Wasmer Registry stores and distributes
  WebAssembly packages and namespaces, Wasmer Edge deploys those packages as auto-scaling apps, and the wasmer CLI and wasmer.sh
  interact with the platform through a single public GraphQL API at registry.wasmer.io/graphql.
deliveryModel:
  model: open-core
  license: MIT
  license_evidence:
    repo: wasmerio/wasmer
    spdx: MIT
    stars: 21086
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: medium
  source:
  - openapi
  - pricing
  - repository-license
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wasmer.png
tags:
- WebAssembly
- Wasm
- Registry
- Edge
- Runtime
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.23'
apis:
- aid: wasmer:wasmer-cli
  name: Wasmer CLI
  tags:
  - CLI
  - Tooling
  - Publish
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.wasmer.io/registry/cli
  baseURL: https://registry.wasmer.io/graphql
  properties:
  - url: https://docs.wasmer.io/registry/cli
    type: Documentation
  - url: https://docs.wasmer.io/install
    type: APIReference
  - url: graphql/wasmer-graphql.md
    type: GraphQL
  - url: https://github.com/wasmerio/wasmer
    type: GitHub
  description: The wasmer command-line client (wasmer login, publish, deploy, run, ssh) - a first-class consumer of the Registry
    GraphQL API that wraps publish and Edge deployment workflows.
- aid: wasmer:wasmer-graph-ql-api
  name: Wasmer Graph QL API
  description: The Graph QL API from Wasmer — 1 operation(s) for graph ql.
  humanURL: https://docs.wasmer.io/registry/cli
  baseURL: https://registry.wasmer.io/graphql
  tags:
  - GraphQL
  tags_raw:
  - Graph QL
  properties:
  - type: OpenAPI
    url: openapi/wasmer-graph-ql-api-openapi.yml
  - type: Documentation
    url: https://docs.wasmer.io/graphql-api
  - type: APIReference
    url: https://docs.wasmer.io/registry
  - type: GraphQL
    url: graphql/wasmer-graphql.md
  - type: GitHub
    url: https://github.com/wasmerio/wasmer
  - type: Documentation
    url: https://docs.wasmer.io/registry
  - type: APIReference
    url: https://docs.wasmer.io/registry/manifest
  - type: Documentation
    url: https://docs.wasmer.io/edge
  - type: APIReference
    url: https://docs.wasmer.io/edge/configuration
  - type: Documentation
    url: https://docs.wasmer.io/registry/cli
  - type: APIReference
    url: https://docs.wasmer.io/graphql-api
common:
- type: AgenticAccess
  url: agentic-access/wasmer-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/wasmer-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/wasmer-domain-security.yml
- type: Authentication
  url: authentication/wasmer-authentication.yml
- type: GitHubOrganization
  url: https://github.com/wasmerio
- type: LinkedIn
  url: https://www.linkedin.com/company/wasmer
- type: Website
  url: https://wasmer.io
- type: Documentation
  url: https://docs.wasmer.io
- type: Plans
  url: plans/wasmer-plans-pricing.yml
- type: RateLimits
  url: rate-limits/wasmer-rate-limits.yml
- type: FinOps
  url: finops/wasmer-finops.yml
- type: Blog
  url: https://blog.wasmer.io/feed
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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