Spark Platform website screenshot

Spark Platform

Spark Platform is the MLS data platform built by FBS, a 100% employee-owned company in Fargo, North Dakota that has served the US Multiple Listing Service industry for over 30 years and operates the Flexmls MLS system for more than 120 MLS organizations. Spark sits in the distribution layer of US residential real estate: it takes MLS content out of Flexmls and exposes it to third-party developers through two documented interfaces — the proprietary Spark API (https://sparkapi.com/v1, SparkQL filtering, listings, contacts, saved searches, market statistics, portals/VOW accounts) and a RESO Web API implementation at the /Reso/OData endpoint (https://replication.sparkapi.com/Version/3/Reso/OData/) serving Property, Member, Office, Media, OpenHouse, Room, Unit, GreenVerification, PowerProduction and Lookup resources against the RESO Data Dictionary. FBS is a RESO Certified technology provider (Unique Organization Identifier T00000052, status "Certified Current") and appears as the certifying provider on RESO Web API Core 2.0.0 and Data Dictionary 1.7 / 2.0 endorsements for 138 MLS organizations plus one commercial board in the public RESO organizations feed; FBS itself additionally holds RESO webhooks 1.0.0 and RESO Common Format 2.0 endorsements. The API posture must be stated honestly: the documentation is genuinely public and unusually complete, developer registration is a free public form, and the endpoints are live — but they are not open. Every probed data endpoint, including the OData $metadata document, returns HTTP 401 "Invalid API key and/or request signed improperly" anonymously. Real data requires a Developer Agreement with FBS, an MLS-approved data plan purchased through the Spark Datamart under an IDX, VOW or Private role, and a per-MLS fee. Certification here is real and verifiable; reachability is licensed. Home market is the United States.

Spark Platform publishes 3 APIs on the APIs.io network. Tagged areas include Real-Estate, United States, MLS, RESO, and Property Listings.

The Spark Platform catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Spark Platform’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 30 more developer resources.

52.2/100 developing ▬ flat Agent 26/100 agent aware saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0
AccessSelf serve
3 APIs
Real-EstateUnited StatesMLSRESOProperty ListingsIDXPropTechListing Data InfrastructureOData

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0
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/spark-platform: 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 3

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

Spark API

FBS's proprietary REST API over Flexmls MLS content. Documented services include Listings (plus photos, documents, floor plans, videos, virtual tours, open houses, rooms, units,...

Spark RESO Web API

Spark's implementation of the RESO Web API, exposed as an OData service at the /Reso/OData endpoint and serving data shaped by the RESO Data Dictionary. Version 3 is the recomme...

Spark Webhooks

Outbound webhook delivery from the Spark platform. When a Property, Member or Office record changes in an upstream MLS, Spark POSTs a RESO Web API Entity Event payload over HTTP...

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

Rate Limits 1

Documented rate limits and quota policies.

Spark Platform Rate Limits

4 limits

RATE LIMITS

Event Specifications 1

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

Security Posture 2

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

Spark Platform Authentication

http-bearer/oauth2/openIdConnect/saml/apiKey-signed · 4 schemes

SECURITY

Spark Platform Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Spark Platform Scopes

7 scopes · authorizationCode

7 scopes

SCOPES

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Scroll for all 7

Build 6

SDKs, sample code, and the tooling you integrate with

Access & Security 6

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: spark-platform
url: https://raw.githubusercontent.com/api-evangelist/spark-platform/refs/heads/main/apis.yml
name: Spark Platform
kind: company
description: 'Spark Platform is the MLS data platform built by FBS, a 100% employee-owned company in Fargo, North Dakota that
  has served the US Multiple Listing Service industry for over 30 years and operates the Flexmls MLS system for more than
  120 MLS organizations. Spark sits in the distribution layer of US residential real estate: it takes MLS content out of Flexmls
  and exposes it to third-party developers through two documented interfaces — the proprietary Spark API (https://sparkapi.com/v1,
  SparkQL filtering, listings, contacts, saved searches, market statistics, portals/VOW accounts) and a RESO Web API implementation
  at the /Reso/OData endpoint (https://replication.sparkapi.com/Version/3/Reso/OData/) serving Property, Member, Office, Media,
  OpenHouse, Room, Unit, GreenVerification, PowerProduction and Lookup resources against the RESO Data Dictionary. FBS is
  a RESO Certified technology provider (Unique Organization Identifier T00000052, status "Certified Current") and appears
  as the certifying provider on RESO Web API Core 2.0.0 and Data Dictionary 1.7 / 2.0 endorsements for 138 MLS organizations
  plus one commercial board in the public RESO organizations feed; FBS itself additionally holds RESO webhooks 1.0.0 and RESO
  Common Format 2.0 endorsements. The API posture must be stated honestly: the documentation is genuinely public and unusually
  complete, developer registration is a free public form, and the endpoints are live — but they are not open. Every probed
  data endpoint, including the OData $metadata document, returns HTTP 401 "Invalid API key and/or request signed improperly"
  anonymously. Real data requires a Developer Agreement with FBS, an MLS-approved data plan purchased through the Spark Datamart
  under an IDX, VOW or Private role, and a per-MLS fee. Certification here is real and verifiable; reachability is licensed.
  Home market is the United States.'
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
  - scopes
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-02'
  method: derived
image: https://www.sparkapi.io/wp-content/uploads/2023/07/cropped-Spark_Pin_Favicon-192x192.png
tags:
- Real-Estate
- United States
- MLS
- RESO
- Property Listings
- IDX
- PropTech
- Listing Data Infrastructure
- OData
tags_raw:
- Real Estate
- United States
- MLS
- RESO
- Property Listings
- IDX
- PropTech
- Listing Data Infrastructure
- OData
created: '2026-07-26'
modified: '2026-07-26'
specificationVersion: '0.23'
apis:
- aid: spark-platform:spark-api
  name: Spark API
  description: FBS's proprietary REST API over Flexmls MLS content. Documented services include Listings (plus photos, documents,
    floor plans, videos, virtual tours, open houses, rooms, units, history and rules), Contacts, Saved Searches, Listing Carts,
    Portals/VOW accounts, Market Statistics, Overlays, Standard Fields and custom field metadata, System Info, and a Developers
    service for keys, roles, domains, authorizations and usage. Filtering uses SparkQL. Authentication is a Bearer access
    token obtained through OAuth 2 or an MLS-issued non-expiring token; anonymous requests return HTTP 401.
  humanURL: https://sparkplatform.com/docs/overview/api
  baseURL: https://sparkapi.com/v1
  tags:
  - MLS
  - Property Listings
  - Real-Estate
  - IDX
  tags_raw:
  - MLS
  - Property Listings
  - Real Estate
  - IDX
  properties:
  - type: Documentation
    url: https://sparkplatform.com/docs
  - type: APIReference
    url: https://sparkplatform.com/docs/api_services/read_first
  - type: Documentation
    url: https://sparkplatform.com/docs/api_services/listings
  - type: Documentation
    url: https://sparkplatform.com/docs/api_services/market_statistics
  - type: Documentation
    url: https://sparkplatform.com/docs/supporting_documentation/sparkql_grammar
  - type: Documentation
    url: https://sparkplatform.com/docs/supporting_documentation/search_and_paging_syntax
  - type: Authentication
    url: https://sparkplatform.com/docs/authentication/access_token
  - type: ErrorCatalog
    url: errors/spark-platform-error-codes.yml
  - type: Conventions
    url: conventions/spark-platform-conventions.yml
  - type: Examples
    url: examples/spark-platform-request-examples.yml
  - type: SignUp
    url: https://sparkplatform.com/register/developers
  - type: TermsOfService
    url: https://sparkplatform.com/docs/terms_of_use/developer_agreement_and_terms_of_use
- aid: spark-platform:spark-reso-web-api
  name: Spark RESO Web API
  description: Spark's implementation of the RESO Web API, exposed as an OData service at the /Reso/OData endpoint and serving
    data shaped by the RESO Data Dictionary. Version 3 is the recommended service root; versions 2 endpoints remain documented.
    Resources are Property, Member, Office, Media, OpenHouse, Room, Unit, Green Verification, Power Production and Lookup.
    The OData $metadata document at https://replication.sparkapi.com/Version/3/Reso/OData/$metadata is the machine-readable
    contract, but it is not anonymously retrievable — it returned HTTP 401 on 2026-07-26. The same API keys used for the Spark
    API authorize this endpoint.
  humanURL: https://sparkplatform.com/docs/reso/overview
  baseURL: https://replication.sparkapi.com/Version/3/Reso/OData/
  tags:
  - RESO
  - OData
  - MLS
  - Property Listings
  - Real-Estate
  tags_raw:
  - RESO
  - OData
  - MLS
  - Property Listings
  - Real Estate
  properties:
  - type: Documentation
    url: https://sparkplatform.com/docs/reso/overview
  - type: APIReference
    url: https://sparkplatform.com/docs/reso/properties
  - type: Documentation
    url: https://sparkplatform.com/docs/reso/request_parameters
  - type: Documentation
    url: https://sparkplatform.com/docs/reso/reso_replication
  - type: Documentation
    url: https://sparkplatform.com/docs/supporting_documentation/reso_dictionary
  - type: Authentication
    url: https://sparkplatform.com/docs/authentication/access_token
  - type: DataModel
    url: data-model/spark-platform-data-model.yml
  - type: Conformance
    url: conformance/spark-platform-conformance.yml
  - type: Examples
    url: examples/spark-platform-request-examples.yml
- aid: spark-platform:spark-webhooks
  name: Spark Webhooks
  description: Outbound webhook delivery from the Spark platform. When a Property, Member or Office record changes in an upstream
    MLS, Spark POSTs a RESO Web API Entity Event payload over HTTPS to a subscriber URL, signed with an HMAC-SHA256 signature
    in a Signature header, with up to 3 retries, exponential backoff and a roughly 2-second response timeout. Subscriptions
    are filtered by MLS and resource type and support catch-up replay. FBS holds a RESO webhooks 1.0.0 certification endorsement
    for this surface. Subscriptions are arranged with FBS rather than self-provisioned.
  humanURL: https://sparkplatform.com/docs/webhooks/webhooks
  baseURL: https://replication.sparkapi.com/v1
  tags:
  - Webhook
  - RESO
  - MLS
  - Real-Estate
  tags_raw:
  - Webhooks
  - RESO
  - MLS
  - Real Estate
  properties:
  - type: Documentation
    url: https://sparkplatform.com/docs/webhooks/webhooks
  - type: Webhooks
    url: asyncapi/spark-platform-webhooks.yml
common:
- type: DomainSecurity
  url: security/spark-platform-domain-security.yml
- type: Website
  url: https://www.sparkapi.io/
- type: DeveloperPortal
  url: https://sparkplatform.com/docs
- type: Documentation
  url: https://sparkplatform.com/docs
- type: APIReference
  url: https://sparkplatform.com/docs/api_services/read_first
- type: GettingStarted
  url: https://sparkplatform.com/docs/overview/set_up_access
- type: Support
  url: https://www.sparkapi.io/contact/
- type: Blog
  url: https://www.sparkapi.io/blog/
- type: BlogRSS
  url: https://www.sparkapi.io/feed/
- type: SignUp
  url: https://sparkplatform.com/register/developers
- type: Login
  url: https://sparkplatform.com/ticket
- type: GitHubOrganization
  url: https://github.com/sparkapi
- type: Authentication
  url: https://sparkplatform.com/docs/authentication/authentication
- type: Authentication
  url: authentication/spark-platform-authentication.yml
- type: OAuthScopes
  url: scopes/spark-platform-scopes.yml
- type: OpenIDConnectDiscovery
  url: authentication/spark-platform-openid-configuration.json
- type: JSONWebKeySet
  url: authentication/spark-platform-openid-jwks.json
- type: WellKnown
  url: well-known/spark-platform-well-known.yml
- type: Packages
  url: packages/spark-platform-packages.yml
- type: SDKs
  url: packages/spark-platform-packages.yml
- type: Postman
  url: https://documenter.getpostman.com/view/25548936/2s935snM26
- type: PostmanCollection
  url: postman/spark-platform-spark-web-api-queries.postman_collection.json
- type: Examples
  url: examples/spark-platform-request-examples.yml
- type: Conventions
  url: conventions/spark-platform-conventions.yml
- type: ErrorCatalog
  url: errors/spark-platform-error-codes.yml
- type: RateLimits
  url: rate-limits/spark-platform-rate-limits.yml
- type: Lifecycle
  url: lifecycle/spark-platform-lifecycle.yml
- type: DataModel
  url: data-model/spark-platform-data-model.yml
- type: Components
  url: components/spark-platform-components.yml
- type: Webhooks
  url: asyncapi/spark-platform-webhooks.yml
- type: Conformance
  url: conformance/spark-platform-conformance.yml
- type: Compliance
  url: https://services.reso.org/orgs?showStats=true&showEndorsements=true
- type: LLMsTxt
  url: llms/spark-platform-llms.txt
- type: TermsOfService
  url: https://sparkplatform.com/docs/terms_of_use/developer_agreement_and_terms_of_use
- type: PrivacyPolicy
  url: https://sparkplatform.com/docs/terms_of_use/privacy
- type: Pricing
  url: https://www.sparkapi.io/developers/
- type: Certification
  url: https://services.reso.org/orgs?showStats=true&showEndorsements=true
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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