Free · No Account Required

MLS Compliance Tools,
Built for Associations

Free reference tools for RESO standards — built for MLS operators, association IT staff, and PropTech vendors. No software to install, no account required.

500+

US MLSs must comply

9 Tools

Live & free

Free

All tools, always

PDF

Downloadable reports

All Tools

What do you need to check?

RESO Compliance Checker

Test your Web API endpoint against DD 2.0 standards. Instant compliance score + downloadable PDF report.

Data Quality Scorecard

Analyze field population rates, lookup consistency, and detect stale listings, duplicates, and price anomalies.

Market Analytics Dashboard

Connect your RESO Web API and get instant live analytics — price distribution, DOM trends, market velocity, geographic breakdowns, and data quality scores.

RESO API Explorer

Learn how the RESO Web API works with an animated step-by-step explainer, then build and test your own OData queries with the interactive drag-and-drop builder.

OData Query Cheat Sheet

Searchable copy-paste reference for RESO Web API queries. Every operator, filter pattern, function, and complete query example — ready to use.

RESO Field Mapper

Upload your MLS field export and instantly map every field to RESO DD 1.7, 2.0, or 2.1. Download Excel + PDF reports.

RETS → Web API Tracker

Track every data consumer across 7 migration stages. Board-ready progress reports, CSV import, share links, and blocker tracking.

Security & Auth Validator

28 live checks — TLS versions, OAuth 2.0 lifecycle, OpenID Connect, security headers, and endpoint hardening. Find issues before auditors do.

Field Dictionary Explorer

Browse all 217 RESO DD 2.0 fields with definitions, data types, and full enumeration values. Search, filter, copy, export CSV.

How It Works

Three steps to compliance clarity

01

🖱️

Choose a tool

Select from our free suite of RESO compliance tools. No account or software needed.

02

🔗

Enter your endpoint

Provide your RESO Web API URL and OAuth credentials. We run automated checks against the latest standards.

03

📄

Get your report

See your compliance score instantly on screen and download a full PDF report — no email required.

04

🤝

Need hands-on help?

If your score shows gaps, our RESO-certified specialist can assist with remediation and certification prep. Send an inquiry →

Why It Matters

RESO compliance isn't optional

📋

NAR Mandate

All NAR-affiliated MLSs must adopt RESO Data Dictionary 2.0 within one year of ratification. Non-compliant associations face public listing on RESO's non-compliance board.

⚡

Vendor Integration Speed

Before RESO standards, a single MLS feed integration took 25+ hours. With Web API, it takes 2–16 hours. Bad data costs your vendors time and your members money.

🔒

Data Security

Proper OAuth 2.0 implementation protects member PII. A misconfigured endpoint exposes your MLS to unauthorized access and potential liability.

📈

Member Value

Clean, standardized data means better IDX websites, better CRMs, and better tools for your REALTOR® members. Data quality is your MLS's core asset.

🎮 DD Learning Games NEW

Master the Data Dictionary — the fun way

Four arcade-style games built around real RESO DD 2.0 field names. Play to learn — no studying required.

DD Field Hammer

Hammer fields matching the target Resource before they disappear. Adjustable speed 1×–4×. Three difficulty levels.

A field appears — tap the correct Resource before the timer runs out. Streak multipliers and three difficulty levels.

DD Field Challenge

Match fields to their Resource, Group, and Data Type. Three difficulty levels with accuracy and speed scoring.

Fields rain from the sky — catch the ones belonging to the target Resource. Dodge the rest or lose a life.