Fermyon

Fermyon Wasm Functions is a multi-tenant, hosted, globally distributed engine for serverless functions running on Akamai Cloud, the most distributed cloud network. Fermyon is the company behind the Spin Framework and SpinKube, providing tools and runtimes for building and operating WebAssembly-based serverless applications.

Fermyon publishes 15 APIs on the APIs.io network, including Accounts API, Apps API, Auth Tokens API, and 12 more. Tagged areas include Compute, Functions, WebAssembly, Serverless, and Edge Computing.

Fermyon’s developer surface includes authentication, developer portal, documentation, getting-started guide, engineering blog, CLI, changelog, and 31 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.8/100 developing ▬ flat Agent 21/100 agent aware Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemiumSelf serve⚡ Free to try

2 APIs

Compute Functions WebAssembly Serverless Edge Computing Serverless FunctionsSpinDeveloper Tools

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 53.8/100 · developing

Contract Quality 7.9 / 19

Developer Ergonomics 10.1 / 15

Access Clarity 11.6 / 15

Operational Transparency 4.4 / 10

Contract Governance 0.4 / 9

Discoverability 4.8 / 8

Regulatory Posture 4.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · 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 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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/fermyon: 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 15

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

Fermyon Wasm Functions

Fermyon Wasm Functions is a multi-tenant, hosted, globally distributed engine for serverless functions running on Akamai Cloud. Developers author functions with the Spin Framewo...

Fermyon Accounts API

The accounts API from Fermyon — 1 operation(s) for accounts.

Fermyon Apps API

The apps API from Fermyon — 6 operation(s) for apps.

Fermyon Auth Tokens API

The auth-tokens API from Fermyon — 2 operation(s) for auth-tokens.

Fermyon Channels API

The channels API from Fermyon — 6 operation(s) for channels.

Fermyon Custom Domains API

The custom-domains API from Fermyon — 1 operation(s) for custom-domains.

Fermyon Device Codes API

The device-codes API from Fermyon — 3 operation(s) for device-codes.

Fermyon Key Value Pairs API

The key-value-pairs API from Fermyon — 1 operation(s) for key-value-pairs.

Fermyon Key Value Stores API

The key-value-stores API from Fermyon — 4 operation(s) for key-value-stores.

Fermyon Oci API

The oci API from Fermyon — 4 operation(s) for oci.

Fermyon Payments API

The payments API from Fermyon — 3 operation(s) for payments.

Fermyon Personal Access Tokens API

The personal-access-tokens API from Fermyon — 2 operation(s) for personal-access-tokens.

Fermyon Revisions API

The revisions API from Fermyon — 1 operation(s) for revisions.

Fermyon Sql Databases API

The sql-databases API from Fermyon — 5 operation(s) for sql-databases.

Fermyon Variable Pairs API

The variable-pairs API from Fermyon — 1 operation(s) for variable-pairs.

Scroll for all 15

Open Collections 16

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

API Collection

OPEN COLLECTION

Fermyon Cloud accounts API

OPEN COLLECTION

Fermyon Cloud accounts apps API

OPEN COLLECTION

Fermyon Cloud accounts auth-tokens API

OPEN COLLECTION

Fermyon Cloud accounts channels API

OPEN COLLECTION

Fermyon Cloud accounts custom-domains API

OPEN COLLECTION

Fermyon Cloud accounts device-codes API

OPEN COLLECTION

Fermyon Cloud accounts key-value-pairs API

OPEN COLLECTION

Fermyon Cloud accounts key-value-stores API

OPEN COLLECTION

Fermyon Cloud accounts oci API

OPEN COLLECTION

Fermyon Cloud accounts payments API

OPEN COLLECTION

Fermyon Cloud accounts personal-access-tokens API

OPEN COLLECTION

Fermyon Cloud accounts revisions API

OPEN COLLECTION

Fermyon Cloud accounts sql-databases API

OPEN COLLECTION

Fermyon Cloud accounts variable-pairs API

OPEN COLLECTION

Fermyon Cloud API

OPEN COLLECTION

Scroll for all 16

Pricing Plans 1

Published pricing tiers and plan structures.

Fermyon Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fermyon Rate Limits

15 limits

RATE LIMITS

FinOps 1

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

Fermyon Finops

FINOPS

Security Posture 3

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

Fermyon Authentication

apiKey · 1 scheme

SECURITY

Fermyon Domain Security

TLSv1.3 · DMARC

SECURITY

Fermyon Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Fermyon Agentic Access

62 operations · 38 acting

AGENTIC

Resources

Get Started 6

Portal, sign-up, and the first successful call

Portal

GettingStarted

DeveloperPortal

Quickstart

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

WellKnown

WellKnown

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conformance

Conventions

Lifecycle

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Postman

Access & Security 5

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

Authentication

SecurityTxt

Security

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

RateLimits

RateLimits

Support

Support

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

LinkedIn

Blog

Blog

Website

Website

Source (apis.yml)

aid: fermyon
name: Fermyon
description: Fermyon Wasm Functions is a multi-tenant, hosted, globally distributed engine for serverless functions running
  on Akamai Cloud, the most distributed cloud network. Fermyon is the company behind the Spin Framework and SpinKube, providing
  tools and runtimes for building and operating WebAssembly-based serverless applications.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  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
  - url: https://www.fermyon.com/
    status: 301
    note: declared website redirects to https://www.akamai.com/products/akamai-functions — a different registrable domain
      (fermyon.com -> akamai.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fermyon.png
tags:
- Compute
- Functions
- WebAssembly
- Serverless
- Edge Computing
- Serverless Functions
- Spin
- Developer Tools
created: '2025-02-08'
modified: '2026-09-09'
url: https://raw.githubusercontent.com/api-evangelist/fermyon/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: fermyon:fermyon
  name: Fermyon Wasm Functions
  description: Fermyon Wasm Functions is a multi-tenant, hosted, globally distributed engine for serverless functions running
    on Akamai Cloud. Developers author functions with the Spin Framework and deploy them to a globally distributed runtime.
  humanURL: https://developer.fermyon.com/
  tags:
  - Compute
  - Functions
  - WebAssembly
  - Serverless
  x-baseURL-note: 'No public REST base URL is published for Fermyon Wasm Functions / Akamai Functions. Its control plane is
    reachable only through the `spin aka` Spin CLI plugin; the provider documents no HTTP API and serves no OpenAPI (probed
    2026-09-09: https://techdocs.akamai.com/akamai-functions/openapi/ returns an empty "All OpenAPI Files for v1" listing).
    Recorded as absent rather than guessed.'
  properties:
  - type: Documentation
    url: https://developer.fermyon.com/wasm-functions/index
  - type: GettingStarted
    url: https://techdocs.akamai.com/akamai-functions/docs/quickstart
  - type: LLMsTxt
    url: llms/fermyon-wasm-functions-llms.txt
  - type: ChangeLog
    url: https://techdocs.akamai.com/akamai-functions/changelog
  - type: CLI
    url: https://techdocs.akamai.com/akamai-functions/docs/aka-command-reference
  - type: RateLimits
    url: https://techdocs.akamai.com/akamai-functions/docs/quotas-and-limits
- aid: fermyon:fermyon-accounts-api
  name: Fermyon Accounts API
  description: The accounts API from Fermyon — 1 operation(s) for accounts.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Account
  tags_raw:
  - accounts
  properties:
  - type: OpenAPI
    url: openapi/fermyon-accounts-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-accounts-api-overlay.yaml
- aid: fermyon:fermyon-apps-api
  name: Fermyon Apps API
  description: The apps API from Fermyon — 6 operation(s) for apps.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Application
  tags_raw:
  - apps
  properties:
  - type: OpenAPI
    url: openapi/fermyon-apps-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-apps-api-overlay.yaml
- aid: fermyon:fermyon-auth-tokens-api
  name: Fermyon Auth Tokens API
  description: The auth-tokens API from Fermyon — 2 operation(s) for auth-tokens.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Auth Tokens
  tags_raw:
  - auth-tokens
  properties:
  - type: OpenAPI
    url: openapi/fermyon-auth-tokens-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-auth-tokens-api-overlay.yaml
- aid: fermyon:fermyon-channels-api
  name: Fermyon Channels API
  description: The channels API from Fermyon — 6 operation(s) for channels.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Channels
  tags_raw:
  - channels
  properties:
  - type: OpenAPI
    url: openapi/fermyon-channels-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-channels-api-overlay.yaml
- aid: fermyon:fermyon-custom-domains-api
  name: Fermyon Custom Domains API
  description: The custom-domains API from Fermyon — 1 operation(s) for custom-domains.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Custom Domains
  tags_raw:
  - custom-domains
  properties:
  - type: OpenAPI
    url: openapi/fermyon-custom-domains-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-custom-domains-api-overlay.yaml
- aid: fermyon:fermyon-device-codes-api
  name: Fermyon Device Codes API
  description: The device-codes API from Fermyon — 3 operation(s) for device-codes.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - device-codes
  properties:
  - type: OpenAPI
    url: openapi/fermyon-device-codes-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-device-codes-api-overlay.yaml
- aid: fermyon:fermyon-key-value-pairs-api
  name: Fermyon Key Value Pairs API
  description: The key-value-pairs API from Fermyon — 1 operation(s) for key-value-pairs.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Key-Value Pairs
  tags_raw:
  - key-value-pairs
  properties:
  - type: OpenAPI
    url: openapi/fermyon-key-value-pairs-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-key-value-pairs-api-overlay.yaml
- aid: fermyon:fermyon-key-value-stores-api
  name: Fermyon Key Value Stores API
  description: The key-value-stores API from Fermyon — 4 operation(s) for key-value-stores.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Key-Value Stores
  tags_raw:
  - key-value-stores
  properties:
  - type: OpenAPI
    url: openapi/fermyon-key-value-stores-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-key-value-stores-api-overlay.yaml
- aid: fermyon:fermyon-oci-api
  name: Fermyon Oci API
  description: The oci API from Fermyon — 4 operation(s) for oci.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - OCI
  tags_raw:
  - oci
  properties:
  - type: OpenAPI
    url: openapi/fermyon-oci-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-oci-api-overlay.yaml
- aid: fermyon:fermyon-payments-api
  name: Fermyon Payments API
  description: The payments API from Fermyon — 3 operation(s) for payments.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Payments
  tags_raw:
  - payments
  properties:
  - type: OpenAPI
    url: openapi/fermyon-payments-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-payments-api-overlay.yaml
- aid: fermyon:fermyon-personal-access-tokens-api
  name: Fermyon Personal Access Tokens API
  description: The personal-access-tokens API from Fermyon — 2 operation(s) for personal-access-tokens.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Personal Access Tokens
  tags_raw:
  - personal-access-tokens
  properties:
  - type: OpenAPI
    url: openapi/fermyon-personal-access-tokens-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-personal-access-tokens-api-overlay.yaml
- aid: fermyon:fermyon-revisions-api
  name: Fermyon Revisions API
  description: The revisions API from Fermyon — 1 operation(s) for revisions.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - Revisions
  tags_raw:
  - revisions
  properties:
  - type: OpenAPI
    url: openapi/fermyon-revisions-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-revisions-api-overlay.yaml
- aid: fermyon:fermyon-sql-databases-api
  name: Fermyon Sql Databases API
  description: The sql-databases API from Fermyon — 5 operation(s) for sql-databases.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - SqlDatabases
  tags_raw:
  - sql-databases
  properties:
  - type: OpenAPI
    url: openapi/fermyon-sql-databases-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-sql-databases-api-overlay.yaml
- aid: fermyon:fermyon-variable-pairs-api
  name: Fermyon Variable Pairs API
  description: The variable-pairs API from Fermyon — 1 operation(s) for variable-pairs.
  humanURL: https://developer.fermyon.com/
  baseURL: https://cloud.fermyon.com
  tags:
  - variable-pairs
  properties:
  - type: OpenAPI
    url: openapi/fermyon-variable-pairs-api-openapi.yml
  - type: Overlay
    url: overlays/fermyon-variable-pairs-api-overlay.yaml
common:
- type: AgenticAccess
  url: agentic-access/fermyon-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/fermyon-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/fermyon-domain-security.yml
- type: Authentication
  url: authentication/fermyon-authentication.yml
- type: GitHubOrganization
  url: https://github.com/fermyon
- type: LinkedIn
  url: https://www.linkedin.com/company/fermyon
- type: Portal
  url: https://developer.fermyon.com/
- type: Documentation
  url: https://developer.fermyon.com/spin/v3/quickstart
- type: GettingStarted
  url: https://developer.fermyon.com/spin/v3/quickstart
- type: Blog
  url: https://www.fermyon.com/blog/index
- type: Website
  url: https://www.fermyon.com/
- type: Packages
  url: packages/fermyon-packages.yml
- type: SDKs
  url: packages/fermyon-packages.yml
- type: CLI
  url: cli/fermyon-cli.yml
- type: WellKnown
  url: well-known/fermyon-well-known.yml
- type: SecurityTxt
  url: well-known/fermyon-security.txt
- type: Security
  url: security/fermyon-vulnerability-disclosure.yml
- type: LLMsTxt
  url: llms/fermyon-llms.txt
- type: X-MCPServerCandidate
  url: mcp/fermyon-mcp.yml
- type: Conformance
  url: conformance/fermyon-conformance.yml
- type: Conventions
  url: conventions/fermyon-conventions.yml
- type: Lifecycle
  url: lifecycle/fermyon-lifecycle.yml
- type: DataModel
  url: data-model/fermyon-data-model.yml
- type: ChangeLog
  url: changelog/fermyon-changelog.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/fermyon-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fermyon-rate-limits.yml
- type: FinOps
  url: finops/fermyon-finops.yml
- type: Postman
  url: collections/fermyon.postman_collection.json
- type: APIReference
  url: https://developer.fermyon.com/cloud/rest-api
- type: DeveloperPortal
  url: https://developer.fermyon.com/
- type: Quickstart
  url: https://developer.fermyon.com/cloud/quickstart
- type: Support
  url: https://developer.fermyon.com/cloud/support
- type: Pricing
  url: https://www.fermyon.com/pricing
- type: SignUp
  url: https://cloud.fermyon.com/?signup
- type: Login
  url: https://cloud.fermyon.com/login
- type: TermsOfService
  url: https://www.fermyon.com/legal
- type: PrivacyPolicy
  url: https://www.fermyon.com/privacy-policy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-09'
  status: enriched
  artifacts_added: 32
  pass: local-v3

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