# Spark Platform

**Canonical:** https://apis.io/providers/spark-platform/  
**Website:** https://www.sparkapi.io/  
**APIs profiled:** 3

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.

## Kin Score — 52.6 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 52.6).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 51.6 |
| Governance | 12.5 |
| Operational Transparency | 44.7 |
| Developer Ergonomics | 63.0 |
| Commercial Clarity | 52.6 |

## Agent readiness — 39.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | documented |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (3)

- **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...

## Security (2)

- **Spark Platform Authentication** — http-bearer/oauth2/openIdConnect/saml/apiKey-signed · 4 schemes
- **Spark Platform Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Real Estate, United States, MLS, RESO, Property Listings, IDX, PropTech, Listing Data Infrastructure, OData

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/spark-platform/). Scores are computed from the provider's own public artifacts under a published rubric.