Fyrn

Fyrn is an AI‑first enterprise integration platform that enables users to describe integration workflows in natural language, automatically generating declarative YAML configurations that connect SaaS applications, databases, and services. The platform’s self‑healing runtime monitors API changes, auto‑fixes mappings, and ensures continuous operation without manual intervention. Featuring a CLI‑first developer experience, version‑controlled configurations, and robust security controls, Fyrn aims to simplify complex integrations for enterprises, reducing development time and operational overhead.

Fyrn is listed with 2 APIs on the APIs.io network. Tagged areas include Integration, Artificial Intelligence, Automation, Enterprise, and Platform.

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

Fyrn’s developer surface includes CLI, authentication, documentation, API reference, getting-started guide, engineering blog, pricing, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.9/100 thin ▼ -8.2 Agent 17/100 agent aware Heartbeat 22/100 dormant Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 APIs

Integration Artificial Intelligence Automation Enterprise Platform Company

Kin Score

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

Composite quality — 34.9/100 · thin

Contract Quality 5.3 / 19

Developer Ergonomics 5.2 / 15

Access Clarity 8.1 / 15

Operational Transparency 0.0 / 10

Contract Governance 1.8 / 9

Discoverability 4.3 / 8

Regulatory Posture 2.9 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 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 0 / 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.

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 28.3 — up to +17.9 composite points
Developer Ergonomics scores 34.5 — up to +13.1 composite points
Operational Transparency scores 0.0 — up to +13.0 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/fyrn/apis.yml: open an issue on github.com/api-evangelist/fyrn 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 →

APIs 2

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

Fyrn REST API

REST API for Fyrn integration platform

Fyrn API

Fyrn API as documented publicly: 94 operations. Contract generated from the documentation by API Evangelist (2026-10-18); not the provider's own document.

Fyrn API pricing

Prices published by Fyrn, read 2026-10-18 from fyrn.ai/pricing/.

Plan	Price
Free	€0/ forever
Team	€499/mo (billed annually)
Business	€1,499/mo (billed annually)
Enterprise	Contact Sales

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Fyrn Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

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

Fyrn Context

19 classes · 29 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fyrn API Rules

12 rules · 11 errors 1 info

SPECTRAL

JSON Schema 6

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

GetApiV1FlowsResponse

7 properties

JSON SCHEMA

PostApiV1AiGenerateAdapterRequest

3 properties

JSON SCHEMA

PostApiV1AiGenerateFlowRequest

4 properties

JSON SCHEMA

PostApiV1ConnectorsInstancesRequest

4 properties

JSON SCHEMA

PostApiV1FlowsRequest

3 properties

JSON SCHEMA

PutApiV1FlowsIdRequest

5 properties

JSON SCHEMA

Security Posture 2

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

Fyrn Authentication

2 schemes

SECURITY

Fyrn Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

CLI

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fyrn
name: Fyrn
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://fyrn.ai/images/og-default.png
description: Fyrn is an AI‑first enterprise integration platform that enables users to describe integration workflows in natural
  language, automatically generating declarative YAML configurations that connect SaaS applications, databases, and services.
  The platform’s self‑healing runtime monitors API changes, auto‑fixes mappings, and ensures continuous operation without
  manual intervention. Featuring a CLI‑first developer experience, version‑controlled configurations, and robust security
  controls, Fyrn aims to simplify complex integrations for enterprises, reducing development time and operational overhead.
url: https://raw.githubusercontent.com/api-evangelist/fyrn/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-18 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-17'
modified: '2026-10-17'
tags:
- Integration
- Artificial Intelligence
- Automation
- Enterprise
- Platform
- Company
tags_raw:
- Integration
- AI
- Automation
- Enterprise
- Platform
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/fyrn-plans-pricing.yml
- type: Spectral
  url: rules/fyrn-rules.yml
- type: JSONLD
  url: json-ld/fyrn-context.jsonld
- type: Vocabulary
  url: vocabulary/fyrn-vocabulary.yml
- type: DataModel
  url: data-model/fyrn-data-model.yml
- type: CLI
  url: cli/fyrn-cli.yml
- type: Authentication
  url: authentication/fyrn-authentication.yml
- type: Conformance
  url: conformance/fyrn-conformance.yml
- type: Hosts
  url: hosts/fyrn-hosts.yml
- type: Vendors
  url: vendors/fyrn-vendors.yml
- type: DomainSecurity
  url: security/fyrn-domain-security.yml
- type: Website
  url: https://fyrn.ai/
- type: Documentation
  url: https://docs.fyrn.ai/
- type: APIReference
  url: https://docs.fyrn.ai/reference/api-reference/
- type: GettingStarted
  url: https://docs.fyrn.ai/getting-started/
- type: Blog
  url: https://fyrn.ai/blog
- type: Pricing
  url: https://fyrn.ai/pricing
- type: SignUp
  url: https://app.fyrn.ai/signup
- type: TermsOfService
  url: https://fyrn.ai/terms
- type: PrivacyPolicy
  url: https://fyrn.ai/privacy
apis:
- name: Fyrn REST API
  description: REST API for Fyrn integration platform
  humanURL: https://docs.fyrn.ai/reference/api-reference/
  baseURL: null
  aid: fyrn:fyrn-rest-api
- aid: fyrn:fyrn-api
  name: Fyrn API
  description: 'Fyrn API as documented publicly: 94 operations. Contract generated from the documentation by API Evangelist
    (2026-10-18); not

    the provider''s own document.'
  humanURL: https://docs.fyrn.ai/reference/api-reference
  baseURL: https://api.fyrn.dev/api/v1
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/fyrn-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/fyrn-get-api-v1-flows-response-schema.json
  - type: JSONSchema
    url: json-schema/fyrn-post-api-v1-connectors-instances-request-schema.json
  - type: JSONSchema
    url: json-schema/fyrn-post-api-v1-ai-generate-flow-request-schema.json
  - type: JSONSchema
    url: json-schema/fyrn-put-api-v1-flows-id-request-schema.json
  - type: JSONSchema
    url: json-schema/fyrn-post-api-v1-ai-generate-adapter-request-schema.json
  - type: JSONSchema
    url: json-schema/fyrn-post-api-v1-flows-request-schema.json
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: Docs are rendered via JavaScript, preventing machine‑readable spec discovery.
  evidence:
  - url: https://docs.fyrn.ai/reference/api-reference/
    status: 200
  checked: '2026-10-18'
x-enrichment:
  date: '2026-10-18'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Fyrn API — frequently asked questions

Does Fyrn have an API?

Yes. APIs.io lists 2 APIs from Fyrn, including Fyrn REST API and Fyrn API.

Is there an OpenAPI specification for the Fyrn API?

Yes. APIs.io indexes 1 OpenAPI specification for Fyrn, each linked for download from this page.

How do I authenticate with the Fyrn API?

Fyrn uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Fyrn Authentication.

How much does the Fyrn API cost?

Fyrn publishes its prices; its Free plan is €0/ forever as of 2026-10-18. APIs.io lists 4 pricing plans for Fyrn, with each plan's price, limits and inclusions under Pricing on this page.

Is the Fyrn API ready for AI agents?

Fyrn has a Kin Score of 34.9 out of 100 (thin) and an Agent Readiness score of 17.2 (agent-aware), scored by API Evangelist on 2026-11-06.

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