Bright MLS

Bright MLS is one of the largest multiple listing services in the United States, serving real estate professionals across the Mid-Atlantic. Its developer portal (developer.brightmls.com, a SwaggerHub Portal) documents the RESO Web API (OData, RESO Data Dictionary 1.6 Platinum certified) for licensed listing data and the ShowingHub showing-scheduling interoperability API, and its public SwaggerHub registry publishes OpenAPI contracts for the Data Hub ingestion and DataLake distribution services and the Manifest Services API for media vendors.

Bright MLS publishes 7 API contracts indexed on the APIs.io network, including Auth API, Listing API, Manifests API, and 4 more. Tagged areas include Company, Real Estate, MLS, RESO, and OData.

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

Bright MLS’s developer surface includes authentication, documentation, support, pricing, engineering blog, and 19 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

43.9/100 developing ▼ -10.2 Agent 27/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

3 published contracts

Company Real Estate MLS RESO OData Listings Property Data

Kin Score

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

Composite quality — 43.9/100 · developing

Contract Quality 11.2 / 19

Developer Ergonomics 2.9 / 15

Access Clarity 9.3 / 15

Operational Transparency 1.0 / 10

Contract Governance 3.2 / 9

Discoverability 5.2 / 8

Regulatory Posture 3.1 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 27/100 · 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 8 / 8

Request/Response Examples 7 / 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
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)
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

8 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 19.0 — up to +16.2 composite points
Operational Transparency scores 10.5 — up to +11.6 composite points
Contract Quality scores 59.9 — up to +10.0 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/bright-mls/apis.yml: open an issue on github.com/api-evangelist/bright-mls 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 2

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.

OData

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

Bright MLS RESO Web API

OData-based RESO Web API giving licensed vendors access to Bright MLS listing data described by the RESO Data Dictionary; the $metadata document and the service root require a b...

Bright MLS ShowingHub API

ShowingHub is an MLS-provided service for interoperability between showing-scheduling systems, covering registrations and transfers, appointments and event notifications through...

Bright MLS Auth API

The Auth API from Bright MLS — 1 operation(s) for auth.

Bright MLS Listing API

The Listing API from Bright MLS — 2 operation(s) for listing.

Bright MLS Manifests API

Operations available to Manifests

Bright MLS User API

The User API from Bright MLS — 1 operation(s) for user.

Bright MLS Data Hub API

The Data Hub API from Bright MLS — 1 operation(s) for data hub.

Scroll for all 7

Bright MLS API pricing

Prices published by Bright MLS, read 2026-10-28 from www.brightmls.com/pricing.

Plan	Price
Member of Shareholder Association/Office Secretary	$127.50 Per quarter
Unlicensed Assistant	$97.50 Per quarter
Non-REALTOR® or Member of Non-Shareholder Association	$181.50 Per quarter
Activation Fee	Activation Fee: $250 per subscriber

Plan details, limits and sources →

Billed by: quarter per subscriber · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Bright Mls Plans Pricing

4 plans

PLANS

Service Levels 1

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

Bright MLS

SLA

FinOps 1

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

Bright Mls Finops

FINOPS

Semantic Vocabularies 1

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

Bright Mls Context

19 classes · 35 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Bright MLS API Rules

12 rules · 8 errors 1 warnings 3 info

SPECTRAL

JSON Schema 8

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

authTokenBody

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Bright Mls Agentic Access

7 operations · 4 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

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: bright-mls
name: Bright MLS
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  probe_state: none
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://images.ctfassets.net/1g8q1frp41ix/19Q1y6e6KSRESmQY8117MC/28b12fb1278bf35568ad05efd3c7b577/social-share-default-image.jpg
description: Bright MLS is one of the largest multiple listing services in the United States, serving real estate professionals
  across the Mid-Atlantic. Its developer portal (developer.brightmls.com, a SwaggerHub Portal) documents the RESO Web API
  (OData, RESO Data Dictionary 1.6 Platinum certified) for licensed listing data and the ShowingHub showing-scheduling interoperability
  API, and its public SwaggerHub registry publishes OpenAPI contracts for the Data Hub ingestion and DataLake distribution
  services and the Manifest Services API for media vendors.
url: https://raw.githubusercontent.com/api-evangelist/bright-mls/refs/heads/main/apis.yml
x-type: company
x-source: harvest:market-gap:real-estate
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-14 (local-v5; was harvest)
specificationVersion: '0.20'
created: '2026-10-13'
modified: '2026-10-14'
tags:
- Company
- Real Estate
- MLS
- RESO
- OData
- Listings
- Property Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/bright-mls-plans-pricing.yml
- type: AgenticAccess
  url: agentic-access/bright-mls-agentic-access.yml
- type: Spectral
  url: rules/bright-mls-rules.yml
- type: JSONLD
  url: json-ld/bright-mls-context.jsonld
- type: Vocabulary
  url: vocabulary/bright-mls-vocabulary.yml
- type: DataModel
  url: data-model/bright-mls-data-model.yml
- type: ErrorCatalog
  url: errors/bright-mls-problem-types.yml
- type: Conformance
  url: conformance/bright-mls-conformance.yml
- type: LLMsTxt
  url: llms/bright-mls-llms.txt
- type: Hosts
  url: hosts/bright-mls-hosts.yml
- type: Vendors
  url: vendors/bright-mls-vendors.yml
- type: Authentication
  url: authentication/bright-mls-authentication.yml
- type: DomainSecurity
  url: security/bright-mls-domain-security.yml
- type: Website
  url: https://www.brightmls.com
- type: DeveloperPortal
  url: https://developer.brightmls.com/
- type: Documentation
  url: https://www.brightmls.com/benefits/developers
- type: Support
  url: https://support.brightmls.com/s/
- type: Login
  url: https://login.brightmls.com/login
- type: Pricing
  url: https://www.brightmls.com/pricing
- type: TermsOfService
  url: https://www.brightmls.com/terms
- type: PrivacyPolicy
  url: https://www.brightmls.com/privacy
- type: Blog
  url: https://www.brightmls.com/newsroom
- type: GitHubOrganization
  url: https://github.com/BrightMLS
- type: StatusPage
  url: https://status.brightmls.com/
apis:
- aid: bright-mls:bright-mls-reso-web-api
  name: Bright MLS RESO Web API
  description: OData-based RESO Web API giving licensed vendors access to Bright MLS listing data described by the RESO Data
    Dictionary; the $metadata document and the service root require a bearer token (anonymous requests return 401). No public
    OpenAPI is published for it.
  humanURL: https://developer.brightmls.com/brightreso/default/overview
  baseURL: https://bright-reso.brightmls.com/RESO/OData/bright
  tags:
  - RESO
  - OData
  - Listings
  properties:
  - type: Documentation
    url: https://developer.brightmls.com/brightreso/default/overview
  - type: Authentication
    url: https://developer.brightmls.com/brightreso/default/authentication
  - type: ErrorHandling
    url: https://developer.brightmls.com/brightreso/default/error-handling
  - type: FAQ
    url: https://developer.brightmls.com/brightreso/default/faq
- aid: bright-mls:bright-mls-showinghub-api
  name: Bright MLS ShowingHub API
  description: ShowingHub is an MLS-provided service for interoperability between showing-scheduling systems, covering registrations
    and transfers, appointments and event notifications through subscriptions; per-environment Swagger UI is served at the
    API host after login. No public contract is published.
  humanURL: https://developer.brightmls.com/showinghub/default/introduction
  tags:
  - Showings
  - Scheduling
  properties:
  - type: Documentation
    url: https://developer.brightmls.com/showinghub/default/introduction
  - type: Authentication
    url: https://developer.brightmls.com/showinghub/default/authorization
- aid: bright-mls:bright-mls-auth-api
  name: Bright MLS Auth API
  description: The Auth API from Bright MLS — 1 operation(s) for auth.
  humanURL: https://developer.brightmls.com/brightreso/default/overview
  baseURL: https://bright-reso.brightmls.com/RESO/OData/bright
  tags:
  - Authentication
  tags_raw:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/bright-mls-auth-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bright-mls-manifest-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-uuid-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-get-package-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-ingestion-api-body-schema.json
- aid: bright-mls:bright-mls-listing-api
  name: Bright MLS Listing API
  description: The Listing API from Bright MLS — 2 operation(s) for listing.
  humanURL: https://developer.brightmls.com/brightreso/default/overview
  baseURL: https://bright-reso.brightmls.com/RESO/OData/bright
  tags:
  - Listings
  tags_raw:
  - Listing
  properties:
  - type: OpenAPI
    url: openapi/bright-mls-listing-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bright-mls-manifest-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-uuid-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-get-package-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-ingestion-api-body-schema.json
- aid: bright-mls:bright-mls-manifests-api
  name: Bright MLS Manifests API
  description: Operations available to Manifests
  humanURL: https://developer.brightmls.com/brightreso/default/overview
  baseURL: https://bright-reso.brightmls.com/RESO/OData/bright
  tags:
  - Manifests
  properties:
  - type: OpenAPI
    url: openapi/bright-mls-manifests-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bright-mls-manifest-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-uuid-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-get-package-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-ingestion-api-body-schema.json
- aid: bright-mls:bright-mls-user-api
  name: Bright MLS User API
  description: The User API from Bright MLS — 1 operation(s) for user.
  humanURL: https://developer.brightmls.com/brightreso/default/overview
  baseURL: https://bright-reso.brightmls.com/RESO/OData/bright
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/bright-mls-user-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bright-mls-manifest-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-uuid-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-get-package-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-ingestion-api-body-schema.json
- aid: bright-mls:bright-mls-data-hub-api
  name: Bright MLS Data Hub API
  description: The Data Hub API from Bright MLS — 1 operation(s) for data hub.
  humanURL: https://developer.brightmls.com/brightreso/default/overview
  baseURL: https://bright-reso.brightmls.com/RESO/OData/bright
  tags:
  - Data Hub
  properties:
  - type: OpenAPI
    url: openapi/bright-mls-data-hub-api-openapi.yml
  - type: JSONSchema
    url: json-schema/bright-mls-manifest-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-uuid-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-user-api-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-get-package-response-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-auth-token-body-schema.json
  - type: JSONSchema
    url: json-schema/bright-mls-ingestion-api-body-schema.json
x-coverage:
  state: none
  reason: no-developer-program
  method: derived
  generated: '2026-10-14'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company publishes no developer documentation host and no machine-readable contract on its own domain
  evidence:
  - url: https://www.brightmls.com
    status: 200
x-enrichment:
  date: '2026-10-14'
  status: enriched
  artifacts_added: 20
  pass: local-v5

Bright MLS API — frequently asked questions

Does Bright MLS have an API?

Yes. APIs.io lists 7 APIs from Bright MLS, including Bright MLS RESO Web API, Bright MLS ShowingHub API and Bright MLS Auth API, and 4 more.

Is there an OpenAPI specification for the Bright MLS API?

Yes. APIs.io indexes 5 OpenAPI specifications for Bright MLS, each linked for download from this page.

How do I authenticate with the Bright MLS API?

Bright MLS uses bearer-token authentication (apiKey · 3 schemes). The details are profiled on APIs.io as Bright Mls Authentication.

How much does the Bright MLS API cost?

Bright MLS publishes its prices; its Member of Shareholder Association/Office Secretary plan is $127.50 Per quarter as of 2026-10-28. APIs.io lists 4 pricing plans for Bright MLS, with each plan's price, limits and inclusions under Pricing on this page.

Is the Bright MLS API ready for AI agents?

Bright MLS has a Kin Score of 43.9 out of 100 (developing) and an Agent Readiness score of 27.1 (agent-aware), scored by API Evangelist on 2026-11-06.

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