mlsgrid website screenshot

mlsgrid

The MLS Grid is a normalized, RESO-compliant data distribution platform that gives brokers, MLSs, and application vendors a single OData v4 Web API and one master data license agreement covering 50+ participating MLSs across the United States. Built on the RESO Data Dictionary, the MLS Grid Web API standardizes Property, Member, Office, OpenHouse, Media, and Lookup resources for IDX, VOW, broker-only, and product-development use cases, replacing the per-MLS RETS feed sprawl that historically burdened real-estate technology vendors.

mlsgrid publishes 7 APIs on the APIs.io network, including Lookup API, Media API, Member API, and 4 more.

The mlsgrid catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

mlsgrid’s developer surface includes authentication, developer portal, documentation, support, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub
50.8/100 developing ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaidSelf serve
7 APIs 15 Features

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 50.8/100 · developing
Contract Quality 18.9 / 25
Developer Ergonomics 6.5 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 0.7 / 13
Governance 8.3 / 12
Discoverability 6.5 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/mlsgrid: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

mlsgrid Lookup API

Enumerated lookup values per originating MLS.

mlsgrid Media API

Listing media (photos, virtual tours) expanded from Property.

mlsgrid Member API

Real estate agents (RESO Data Dictionary Member resource).

mlsgrid Metadata API

OData service and EDMX metadata.

mlsgrid Office API

Brokerage offices (RESO Data Dictionary Office resource).

mlsgrid OpenHouse API

Open house events (RESO Data Dictionary OpenHouse resource).

mlsgrid Property API

Property listings (RESO Data Dictionary Property resource).

Scroll for all 7

Open Collections 1

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

MLS Grid RESO Web API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Mlsgrid Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Mlsgrid Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Mlsgrid Finops

FINOPS

Features 15

Notable capabilities this provider offers.

RESO Data Dictionary compliant entity model (Property, Member, Office, OpenHouse, Media, Lookup)
RESO Web API compliant OData v4 surface with $select, $filter, $expand, $top, $count, @odata.nextLink
Single Master Data License Agreement spanning all participating MLSs
OAuth 2.0 bearer-token authentication with long-lived tokens
Incremental replication via OriginatingSystemName + ModificationTimestamp pattern
$expand=Media,Rooms,UnitTypes for nested resource replication on Property
Standalone Media resource where the originating MLS permits (e.g. Northstar MLS)
All date fields normalized to UTC
Prefixed key fields (e.g. actris-1234567) to namespace records across MLSs
MlgCanView flag for license-driven retention and deletion handling
MlgCanUse array indicating allowed use cases (IDX, VOW, BO, PT)
50+ participating MLSs including ACTRIS, MRED, Northstar, NWMLS, REcolorado, MARIS, Heartland, Realtracs, OneKey
Quarterly compliance audits and centralized vendor management
Per-minute import cadence where the originating MLS permits
Documented rate limits (2 RPS, 7,200/hour, 40,000/24h, 4 GB/hour) with HTTP 429 on violation

Scroll for all 15

Semantic Vocabularies 1

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

Mlsgrid Context

24 classes · 2 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

mlsgrid API Rules

5 rules · 4 warnings 1 info

SPECTRAL

mlsgrid API Rules

5 rules · 2 errors 2 warnings 1 info

SPECTRAL

JSON Schema 2

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

MLS Grid Media

15 properties

JSON SCHEMA

MLS Grid Property

37 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Mlsgrid List Properties Example

2 fields

EXAMPLE

Security Posture 2

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

Mlsgrid Authentication

http · 1 scheme

SECURITY

Mlsgrid Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Mlsgrid Agentic Access

8 operations

8 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal
Portal

Documentation 6

Reference material describing how the API behaves

Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary
Vocabulary
 SpectralRuleset
SpectralRuleset

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 3

Status, limits, changes, and where to get help

Support
Support
 Contact
Contact
 RateLimits
RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService
 Plans
Plans
 FinOps
FinOps

Other 1

Properties that don't map to a standard resource type

Resources
Resources

Source (apis.yml)

apis.yml Raw ↑ 
aid: mlsgrid
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/mlsgrid.png
url: https://raw.githubusercontent.com/api-evangelist/mlsgrid/refs/heads/main/apis.yml
apis:
- aid: mlsgrid:mlsgrid-lookup-api
  name: mlsgrid Lookup API
  description: Enumerated lookup values per originating MLS.
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - Lookup
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-lookup-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
- aid: mlsgrid:mlsgrid-media-api
  name: mlsgrid Media API
  description: Listing media (photos, virtual tours) expanded from Property.
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - Media
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-media-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
- aid: mlsgrid:mlsgrid-member-api
  name: mlsgrid Member API
  description: Real estate agents (RESO Data Dictionary Member resource).
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - Member
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-member-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
- aid: mlsgrid:mlsgrid-metadata-api
  name: mlsgrid Metadata API
  description: OData service and EDMX metadata.
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - Metadata
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-metadata-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
- aid: mlsgrid:mlsgrid-office-api
  name: mlsgrid Office API
  description: Brokerage offices (RESO Data Dictionary Office resource).
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - Office
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-office-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
- aid: mlsgrid:mlsgrid-openhouse-api
  name: mlsgrid OpenHouse API
  description: Open house events (RESO Data Dictionary OpenHouse resource).
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - OpenHouse
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-openhouse-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
- aid: mlsgrid:mlsgrid-property-api
  name: mlsgrid Property API
  description: Property listings (RESO Data Dictionary Property resource).
  humanURL: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  baseURL: https://api.mlsgrid.com/v2/
  tags:
  - Property
  properties:
  - type: OpenAPI
    url: openapi/mlsgrid-property-api-openapi.yml
  - type: Documentation
    url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - type: Documentation
    url: https://docs.mlsgrid.com/master.md
  - type: Metadata
    url: https://api.mlsgrid.com/v2/$metadata
  - type: JSONSchema
    url: json-schema/mlsgrid-property-schema.json
  - type: JSONSchema
    url: json-schema/mlsgrid-media-schema.json
  - type: JSONLD
    url: json-ld/mlsgrid-context.jsonld
common:
- type: AgenticAccess
  url: agentic-access/mlsgrid-agentic-access.yml
- type: DomainSecurity
  url: security/mlsgrid-domain-security.yml
- type: Authentication
  url: authentication/mlsgrid-authentication.yml
- url: https://www.mlsgrid.com
  type: Portal
- url: https://docs.mlsgrid.com
  type: Documentation
- url: https://docs.mlsgrid.com/master.md
  type: Documentation
- url: https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  name: API Version 2.0
  type: Documentation
- url: https://docs.mlsgrid.com/sitemap.md
  name: Documentation Sitemap
  type: Documentation
- url: https://www.mlsgrid.com
  name: Resources and Guides
  type: Resources
- url: https://www.mlsgrid.com
  type: PrivacyPolicy
- url: https://www.mlsgrid.com
  type: TermsOfService
- url: mailto:support@mlsgrid.com
  type: Support
- url: mailto:info@mlsgrid.com
  type: Contact
- url: https://github.com/mlsgrid
  type: GitHubOrganization
- url: https://www.reso.org/data-dictionary/
  name: RESO Data Dictionary
  type: Documentation
- url: https://www.reso.org/reso-web-api/
  name: RESO Web API Specification
  type: Documentation
- url: plans/mlsgrid-plans-pricing.yml
  type: Plans
- url: rate-limits/mlsgrid-rate-limits.yml
  type: RateLimits
- url: finops/mlsgrid-finops.yml
  type: FinOps
- url: vocabulary/mlsgrid-vocabulary.yml
  type: Vocabulary
- url: rules/mlsgrid-rules.yml
  type: SpectralRuleset
- type: Features
  data:
  - RESO Data Dictionary compliant entity model (Property, Member, Office, OpenHouse, Media, Lookup)
  - RESO Web API compliant OData v4 surface with $select, $filter, $expand, $top, $count, @odata.nextLink
  - Single Master Data License Agreement spanning all participating MLSs
  - OAuth 2.0 bearer-token authentication with long-lived tokens
  - Incremental replication via OriginatingSystemName + ModificationTimestamp pattern
  - $expand=Media,Rooms,UnitTypes for nested resource replication on Property
  - Standalone Media resource where the originating MLS permits (e.g. Northstar MLS)
  - All date fields normalized to UTC
  - Prefixed key fields (e.g. actris-1234567) to namespace records across MLSs
  - MlgCanView flag for license-driven retention and deletion handling
  - MlgCanUse array indicating allowed use cases (IDX, VOW, BO, PT)
  - 50+ participating MLSs including ACTRIS, MRED, Northstar, NWMLS, REcolorado, MARIS, Heartland, Realtracs, OneKey
  - Quarterly compliance audits and centralized vendor management
  - Per-minute import cadence where the originating MLS permits
  - Documented rate limits (2 RPS, 7,200/hour, 40,000/24h, 4 GB/hour) with HTTP 429 on violation
  sources:
  - https://www.mlsgrid.com
  - https://docs.mlsgrid.com
  - https://docs.mlsgrid.com/master.md
  - https://docs.mlsgrid.com/api-documentation/api-version-2.0.md
  - https://docs.mlsgrid.com/sitemap.md
  updated: '2026-05-25'
created: '2026-05-25T00:00:00.000Z'
modified: '2026-05-25'
position: Consuming
description: The MLS Grid is a normalized, RESO-compliant data distribution platform that gives brokers, MLSs, and application
  vendors a single OData v4 Web API and one master data license agreement covering 50+ participating MLSs across the United
  States. Built on the RESO Data Dictionary, the MLS Grid Web API standardizes Property, Member, Office, OpenHouse, Media,
  and Lookup resources for IDX, VOW, broker-only, and product-development use cases, replacing the per-MLS RETS feed sprawl
  that historically burdened real-estate technology vendors.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com
  X: apievangelist
  url: https://apievangelist.com
specificationVersion: '0.16'