Gage

Gage is a marketplace for cold‑formed steel framing. Builders submit plans, Gage reads them, prices the frame at nearby fabricators, and manages the job from approval through production to delivery. The platform connects fabricators, installers, architects, and builders, offering instant quotes and streamlined ordering for steel frames.

Gage is listed with 2 APIs on the APIs.io network. Tagged areas include Construction, Marketplace, Steel, and Developers.

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

Gage’s developer surface includes authentication, documentation, API reference, getting-started guide, pricing, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.6/100 thin Agent 19/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

2 APIs

Construction Marketplace Steel Developers

Kin Score

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

Composite quality — 30.6/100 · thin

Contract Quality 5.4 / 21

Developer Ergonomics 4.5 / 17

Access Clarity 9.2 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 4.1 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 19/100 · agent aware

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 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 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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

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)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

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 25.2 — up to +18.7 composite points
Developer Ergonomics scores 26.2 — up to +14.8 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/buildwithgage-com/apis.yml: open an issue on github.com/api-evangelist/buildwithgage-com 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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 2

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

Gage API

API for Gage platform offering endpoints for builders, fabricators and installers. Documentation at the API reference page.

Gage API

Gage API as documented publicly: 41 operations. Contract generated from the documentation by API Evangelist (2026-11-03); not the provider's own document.

Gage API pricing

Prices published by Gage, read 2026-11-03 from buildwithgage.com/pricing.

Plan	Price
Basic	$99/month + 1% per completed sale
Premium	$349/month + 0.7% per completed sale
Enterprise	$999/month + 0.5% per completed sale

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Buildwithgage Com Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

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

Buildwithgage Com Context

50 classes · 91 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Gage API Rules

43 rules · 38 errors 2 warnings 3 info

SPECTRAL

JSON Schema 6

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

GetApiV1PricingRatesResponse

6 properties

JSON SCHEMA

GetApiV1QuotesQteAb12Cd34Ef56Gh78Response

8 properties

JSON SCHEMA

PostApiV1ProjectsRequest

10 properties

JSON SCHEMA

PostApiV1QuotesQteAb12Cd34Ef56Gh78AcceptResponse

8 properties

JSON SCHEMA

PostApiV1QuotesRequest

20 properties

JSON SCHEMA

PostLeadsRequest

9 properties

JSON SCHEMA

Security Posture 2

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

Buildwithgage Com Authentication

1 scheme

SECURITY

Buildwithgage Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

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 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: buildwithgage-com
name: Gage
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://buildwithgage.com/og/gage-default.png
description: Gage is a marketplace for cold‑formed steel framing. Builders submit plans, Gage reads them, prices the frame
  at nearby fabricators, and manages the job from approval through production to delivery. The platform connects fabricators,
  installers, architects, and builders, offering instant quotes and streamlined ordering for steel frames.
url: https://artifacts.apis.io/buildwithgage-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- Construction
- Marketplace
- Steel
- Developers
tags_raw:
- Construction
- Marketplace
- Steel
- API
- Developers
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/buildwithgage-com-plans-pricing.yml
- type: Spectral
  url: rules/buildwithgage-com-rules.yml
- type: JSONLD
  url: json-ld/buildwithgage-com-context.jsonld
- type: Vocabulary
  url: vocabulary/buildwithgage-com-vocabulary.yml
- type: DataModel
  url: data-model/buildwithgage-com-data-model.yml
- type: Authentication
  url: authentication/buildwithgage-com-authentication.yml
- type: Conformance
  url: conformance/buildwithgage-com-conformance.yml
- type: LLMsTxt
  url: llms/buildwithgage-com-llms.txt
- type: Hosts
  url: hosts/buildwithgage-com-hosts.yml
- type: Vendors
  url: vendors/buildwithgage-com-vendors.yml
- type: Login
  url: https://buildwithgage.com/login
- type: DomainSecurity
  url: security/buildwithgage-com-domain-security.yml
- type: Website
  url: https://buildwithgage.com/
- type: Documentation
  url: https://buildwithgage.com/docs
- type: APIReference
  url: https://buildwithgage.com/api
- type: GettingStarted
  url: https://buildwithgage.com/developers
- type: Pricing
  url: https://buildwithgage.com/pricing
- type: TermsOfService
  url: https://buildwithgage.com/docs/legal/terms
- type: PrivacyPolicy
  url: https://buildwithgage.com/docs/legal/privacy
apis:
- name: Gage API
  description: API for Gage platform offering endpoints for builders, fabricators and installers. Documentation at the API
    reference page.
  humanURL: https://buildwithgage.com/docs/api/reference
  baseURL: null
  aid: buildwithgage-com:gage-api
- aid: buildwithgage-com:buildwithgage-com-api
  name: Gage API
  description: 'Gage API as documented publicly: 41 operations. Contract generated from the documentation by API Evangelist
    (2026-11-03); not

    the provider''s own document.'
  humanURL: https://buildwithgage.com/docs/api/reference
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/buildwithgage-com-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/buildwithgage-com-post-api-v1-quotes-request-schema.json
  - type: JSONSchema
    url: json-schema/buildwithgage-com-get-api-v1-pricing-rates-response-schema.json
  - type: JSONSchema
    url: json-schema/buildwithgage-com-post-api-v1-projects-request-schema.json
  - type: JSONSchema
    url: json-schema/buildwithgage-com-get-api-v1-quotes-qte-ab12-cd34-ef56-gh78-response-schema.json
  - type: JSONSchema
    url: json-schema/buildwithgage-com-post-api-v1-quotes-qte-ab12-cd34-ef56-gh78-accept-response-schema.json
  - type: JSONSchema
    url: json-schema/buildwithgage-com-post-leads-request-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The provider's API reference page is HTML with no downloadable OpenAPI, AsyncAPI, GraphQL or other machine‑readable
    contract.
  evidence:
  - url: https://buildwithgage.com/docs/api/reference
    status: 200
  checked: '2026-11-03'
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Gage API — frequently asked questions

Does Gage have an API?

Yes. APIs.io lists 2 APIs from Gage, including Gage API and Gage API.

Is there an OpenAPI specification for the Gage API?

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

How do I authenticate with the Gage API?

Gage uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Buildwithgage Com Authentication.

How much does the Gage API cost?

Gage publishes its prices; its Basic plan is $99/month + 1% per completed sale as of 2026-11-03. APIs.io lists 3 pricing plans for Gage, with each plan's price, limits and inclusions under Pricing on this page.

Is the Gage API ready for AI agents?

Gage has a Kin Score of 30.6 out of 100 (thin) and an Agent Readiness score of 18.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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