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 API contracts indexed 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.

The Fermyon catalog on APIs.io includes 1 Spectral governance ruleset.

Fermyon’s developer surface includes authentication, developer portal, documentation, getting-started guide, engineering blog, CLI, changelog, and 32 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

60.1/100 strong ▬ flat Agent 22/100 agent aware Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 published contracts 4 Agent Skills

Compute Functions WebAssembly Serverless Edge Computing Serverless FunctionsSpinDeveloper Tools

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Subscription Billing & Revenue Management

BC-4250

Payments

POST /api/payments/setup-checkout GET /api/payments/customer-portal GET /api/payments/plans

Software Release & Deployment Management

BC-4210

variable-pairs

POST /api/variable-pairs

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 60.1/100 · strong

Contract Quality 8.7 / 19

Developer Ergonomics 11.2 / 15

Access Clarity 11.6 / 15

Operational Transparency 5.9 / 10

Contract Governance 1.6 / 9

Discoverability 4.8 / 8

Regulatory Posture 4.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · 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

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.

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/.

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

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 46.4 — up to +13.4 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Operational Transparency scores 60.5 — up to +5.1 composite points

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.

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/fermyon/apis.yml: open an issue on github.com/api-evangelist/fermyon 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 →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 15

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

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 15

Agent Skills 4

Packaged agent skills for driving this provider's APIs from an AI assistant.

fermyon-authenticate-to-fermyon-cloud

AGENT SKILL

fermyon-deploy-a-spin-application

AGENT SKILL

fermyon-provision-and-link-cloud-state

AGENT SKILL

fermyon-roll-back-a-deployment

AGENT SKILL

Fermyon API pricing

Prices published by Fermyon, read 2026-10-28 from www.fermyon.com/pricing.

Plan	Price
Starter	$0/month Includes: Up to 5 applications, 100,000 requests, Up to 5 custom domains, Up to 5 subdomains, Up to 5 Key Valu
Growth	$19.38/month Includes: Up to 100 applications, 1,000,000 requests, Up to 100 custom domains, Up to 100 subdomains, Up to 10
Enterprise	Custom Includes: Custom usage and support

Plan details, limits and sources →

Rate limits

: month
: 1000 second
: 10 minute

All 15 limits →

Billed by: subscription · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Fermyon Plans Pricing

3 plans

PLANS

Fermyon Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fermyon Rate Limits

15 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Fermyon

SLA

FinOps 1

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

Fermyon Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fermyon API Rules

45 rules · 40 errors 4 warnings 1 info

SPECTRAL

OpenAPI Overlays 14

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Fermyon Accounts Api Overlay

5 actions · documentation · fermyon-accounts-api-openapi.yml

DERIVED

Fermyon Apps Api Overlay

12 actions · documentation · fermyon-apps-api-openapi.yml

DERIVED

Fermyon Auth Tokens Api Overlay

4 actions · documentation · fermyon-auth-tokens-api-openapi.yml

DERIVED

Fermyon Channels Api Overlay

12 actions · documentation · fermyon-channels-api-openapi.yml

DERIVED

Fermyon Custom Domains Api Overlay

3 actions · documentation · fermyon-custom-domains-api-openapi.yml

DERIVED

Fermyon Device Codes Api Overlay

5 actions · documentation · fermyon-device-codes-api-openapi.yml

DERIVED

Fermyon Key Value Pairs Api Overlay

3 actions · documentation · fermyon-key-value-pairs-api-openapi.yml

DERIVED

Fermyon Key Value Stores Api Overlay

8 actions · documentation · fermyon-key-value-stores-api-openapi.yml

DERIVED

Fermyon Oci Api Overlay

9 actions · documentation · fermyon-oci-api-openapi.yml

DERIVED

Fermyon Payments Api Overlay

5 actions · documentation · fermyon-payments-api-openapi.yml

DERIVED

Fermyon Personal Access Tokens Api Overlay

5 actions · documentation · fermyon-personal-access-tokens-api-openapi.yml

DERIVED

Fermyon Revisions Api Overlay

4 actions · documentation · fermyon-revisions-api-openapi.yml

DERIVED

Fermyon Sql Databases Api Overlay

9 actions · documentation · fermyon-sql-databases-api-openapi.yml

DERIVED

Fermyon Variable Pairs Api Overlay

5 actions · documentation · fermyon-variable-pairs-api-openapi.yml

DERIVED

Scroll for all 14

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

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - 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: '2026-11-06'
  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: CapabilityMap
  url: capabilities/fermyon-capability-edges.yml
  name: Fermyon Business Capability Map
- 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

Fermyon API — frequently asked questions

Does Fermyon have an API?

Yes. APIs.io lists 15 APIs from Fermyon, including Fermyon Wasm Functions, Fermyon Accounts API and Fermyon Apps API, and 12 more.

Is there an OpenAPI specification for the Fermyon API?

Yes. APIs.io indexes 14 OpenAPI specifications for Fermyon, each linked for download from this page.

How do I authenticate with the Fermyon API?

Fermyon uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Fermyon Authentication.

How much does the Fermyon API cost?

Fermyon publishes its prices; its Starter plan is $0/month as of 2026-10-28. APIs.io lists 3 pricing plans for Fermyon, with each plan's price, limits and inclusions under Pricing on this page.

Is the Fermyon API ready for AI agents?

Fermyon has a Kin Score of 60.1 out of 100 (strong) and an Agent Readiness score of 22.3 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/fermyon"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/fermyon/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/fermyon/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

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