First Resonance

First Resonance builds ION, a modern Factory Operating System (MES) for companies manufacturing complex hardware in aerospace, defense, robotics, medical devices, and clean energy. ION provides digital work instructions (Procedures and Runs), part and inventory traceability, mBOM/aBOM management, quality and compliance workflows, production scheduling (ION AutoPlan), and analytics. For developers, ION exposes a GraphQL API (api.buildwithion.com) secured with OAuth 2.0 client-credentials API keys, cursor-based (Relay) pagination, webhook subscriptions for realtime events, and a beta hosted MCP server so AI agents can operate the factory system. This profile was enriched from First Resonance's public developer manual.

First Resonance publishes 1 API on the APIs.io network. Tagged areas include Company, Infrastructure, Manufacturing, MES, and Factory Operating System.

The First Resonance catalog on APIs.io includes 1 event-driven AsyncAPI specification.

First Resonance’s developer surface includes documentation, API reference, getting-started guide, authentication, engineering blog, pricing, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

46.2/100 developing ▬ flat Agent 37/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs 1 MCP Servers

Company Infrastructure Manufacturing MESFactory Operating SystemHardware Aerospace GraphQL Traceability Supply Chain

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 46.2/100 · developing

Contract Quality 10.4 / 25

Developer Ergonomics 13.2 / 20

Access Clarity 7.9 / 20

Operational Transparency 6.5 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 6 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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/first-resonance: 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 1

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

ION GraphQL API

The ION Factory OS GraphQL API. A single GraphQL endpoint for reading and writing manufacturing data in ION: Runs, Procedures, Parts, mBOM/aBOM, inventory, notifications, and we...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

First Resonance MCP Server

First Resonance publishes an official hosted MCP (Model Context Protocol) server that lets AI agents operate ION Factory OS. It is currently in beta and available on staging onl...

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

First Resonance Webhooks

ASYNCAPI

Security Posture 3

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

First Resonance Authentication

oauth2 · 1 scheme

SECURITY

First Resonance Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

First Resonance Trust Center

SOC 2, FedRAMP, GDPR, FIPS 140

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

WellKnown

LLMsTxt

AgentSkill

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Webhooks

Lifecycle

Conventions

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

Compliance

Authentication

DomainSecurity

Operate 5

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

Deprecation

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: first-resonance
name: First Resonance
description: First Resonance builds ION, a modern Factory Operating System (MES) for companies manufacturing complex hardware
  in aerospace, defense, robotics, medical devices, and clean energy. ION provides digital work instructions (Procedures and
  Runs), part and inventory traceability, mBOM/aBOM management, quality and compliance workflows, production scheduling (ION
  AutoPlan), and analytics. For developers, ION exposes a GraphQL API (api.buildwithion.com) secured with OAuth 2.0 client-credentials
  API keys, cursor-based (Relay) pagination, webhook subscriptions for realtime events, and a beta hosted MCP server so AI
  agents can operate the factory system. This profile was enriched from First Resonance's public developer manual.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://www.firstresonance.io/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/first-resonance/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- craft-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Infrastructure
- Manufacturing
- MES
- Factory Operating System
- Hardware
- Aerospace
- GraphQL
- Traceability
- Supply Chain
apis:
- name: ION GraphQL API
  description: 'The ION Factory OS GraphQL API. A single GraphQL endpoint for reading and writing manufacturing data in ION:
    Runs, Procedures, Parts, mBOM/aBOM, inventory, notifications, and webhook subscriptions. Authentication is OAuth 2.0 client
    credentials (API key clientId/clientSecret exchanged for an access token at a Keycloak realm), with cursor-based Relay
    pagination and realtime webhook events.'
  humanURL: https://manual.firstresonance.io/api
  baseURL: https://api.buildwithion.com/graphql
  tags:
  - GraphQL
  - Manufacturing
  - MES
  properties:
  - type: GraphQL
    url: https://api.buildwithion.com/graphql
  - type: APIReference
    url: https://manual.firstresonance.io/api/interactive-api-explorer
  - type: Documentation
    url: https://manual.firstresonance.io/api
  - type: GettingStarted
    url: https://manual.firstresonance.io/api/how-to-create-an-app-with-ion
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: TrustCenter
  url: security/first-resonance-trust-center.yml
- type: Compliance
  url: https://security.firstresonance.io/
- type: Website
  url: https://firstresonance.io
- type: DeveloperPortal
  url: https://manual.firstresonance.io/api
- type: Documentation
  url: https://manual.firstresonance.io/
- type: APIReference
  url: https://manual.firstresonance.io/api/interactive-api-explorer
- type: GettingStarted
  url: https://manual.firstresonance.io/api/how-to-create-an-app-with-ion
- type: Authentication
  url: authentication/first-resonance-authentication.yml
- type: Blog
  url: https://www.firstresonance.io/blog
- type: Pricing
  url: https://www.firstresonance.io/plans
- type: SignUp
  url: https://app.firstresonance.io/login
- type: Support
  url: https://www.firstresonance.io/contact/support
- type: TermsOfService
  url: https://www.firstresonance.io/terms
- type: PrivacyPolicy
  url: https://www.firstresonance.io/privacy-policy
- type: GitHubOrganization
  url: https://github.com/firstresonance
- type: StatusPage
  url: https://status.firstresonance.io
- type: ChangeLog
  url: https://www.firstresonance.io/changelog
- type: Deprecation
  url: https://manual.firstresonance.io/api/api-change-policy
- type: MCPServer
  url: mcp/first-resonance-mcp.yml
- type: Webhooks
  url: asyncapi/first-resonance-webhooks.yml
- type: WellKnown
  url: well-known/first-resonance-well-known.yml
- type: LLMsTxt
  url: llms/first-resonance-llms.txt
- type: Lifecycle
  url: lifecycle/first-resonance-lifecycle.yml
- type: Conventions
  url: conventions/first-resonance-conventions.yml
- type: Conformance
  url: conformance/first-resonance-conformance.yml
- type: Sandbox
  url: sandbox/first-resonance-sandbox.yml
- type: ChangeLog
  url: changelog/first-resonance-changelog.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DomainSecurity
  url: security/first-resonance-domain-security.yml
- type: Integrations
  url: https://marketplace.firstresonance.io/
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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/first-resonance"

All providers

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

Every operation they expose

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

How their score was established

curl "https://apis.io/api/v1/providers/first-resonance/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

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.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.