Agent-Ready CRE Data: APIs and MCP Servers for AI Agents (2026)

TL;DR

For parcel and ownership data an assistant can call today, Regrid is the most agent-ready source: a public, documented MCP server on top of a self-serve API. ATTOM is the easiest institutional property dataset to try, with a 30-day API key. Cotality, Placer.ai, Prophia and Yardi Matrix offer official MCP access to customers, and Yardi Matrix and CRED iQ publish prices for it. RentCast, Parcl Labs and Realie publish self-serve prices with free tiers and MCP servers, though their data leans residential. CoStar and LoopNet offer no public API, and several vendors restrict sending data to third-party AI tools, so read the terms first.

Tool	Data	Access for agents	How to get it	Published price
Regrid	Parcels, owners, zoning, buildings	MCP server, REST API, tiles, bulk files	Self-serve token; trial covers 7 counties	Overage $0.10 to $0.15 per record
ATTOM	Property, deed, mortgage, AVM	REST API, bulk, Snowflake, Databricks; MCP via sales	30-day self-serve API trial	Not published
Cotality	Property, market, climate risk	MCP server, APIs, Snowflake, Databricks	Licensed customers	Not published
CRED iQ	CMBS, CLO, agency loans, public records	REST API; MCP and bulk feeds on Enterprise	Professional plan for API	$625 to $3,850/month; Enterprise custom
Placer.ai	Foot traffic, trade areas, visitors	MCP server, REST API, data feeds	API add-on; MCP per enterprise account	Not published
Yardi Matrix	Market rents, supply, ownership, loans	Claude connector; API and feeds via sales	Included on every Matrix plan	$199 to $1,999 per user per asset class per month
Prophia	Your own lease data	MCP server	Prophia customers	Not published
RentCast	Rents, comps, property records	MCP server, REST API	Self-serve key	Free 50 calls; $74 to $449/month
Cherre	Your unified portfolio data	GraphQL API, warehouse delivery	Sales	Not published
LightBox	Parcels, property, environmental	REST APIs, bulk, Snowflake	Free developer account	Not published
Parcl Labs	Housing market metrics	MCP server, REST API, CSV	Free account; MCP on Pro	Free 100 credits; Pro $50 per 4 weeks
Realie	Parcel and property records	MCP server, REST API, bulk	Self-serve	Free 25 tokens; $50 to $350/month
Plotzy	Parcels with zoning, owners	REST API	Scale plan via support	Scale plan custom
Trepp	CMBS and CRE loan data	MCP servers, data feed	Sales	Not published
Green Street	Research, valuations, REIT data	MCP server, API, Snowflake	Paid add-on for subscribers	Not published
MSCI Real Capital Analytics	Transactions and indexes	API, Snowflake, MCP connector	MSCI clients	Not published
RevolutionRE	Your multifamily PMS data	MCP server, data feeds	Included with subscriptions	BI Tool from $1.75 per unit per month
PropertyRadar	Owners, mortgages, distress	REST API, webhooks; MCP announced	Any paid plan	Plans $119 to $599/month
BatchData	Property, owner and contact data	REST API, bulk; MCP custom	Account with sandbox	Property data from $1,000/month
HelloData	Multifamily rents and concessions	REST API	Key on request	$0.10 per call (Portfolio plan)
Mashvisor	Short and long-term rental data	REST API	Self-serve	$129 to $599/month
Zoneomics	Zoning districts and rules	REST API	Self-serve	$134 to $549/month
SafeGraph	Points of interest, footprints	GraphQL API, bulk	Sales	Not published

Regrid sells standardized parcel data across the US, Canada and parts of Europe, with building footprints, zoning and ownership updates as add-ons. It is the most agent-ready source in this guide: its MCP server is public and documented, with setup steps for Claude Code and Claude Desktop, and without a token it will answer questions about Regrid's schema, coverage and endpoints. With a token it queries parcel records, ownership, address and coordinate searches and county metadata through the same REST API that developers use.

Self-serve API plans include 2,000 records and 200,000 tiles a month, with overage published at $0.10 per record (Standard), $0.15 (Premium) and $0.001 per tile; the trial token covers seven counties, and larger volumes need an enterprise licence. Every parcel an agent returns counts against your quota, so Regrid suggests limiting results while you build. Its terms also require you to turn off model training and data sharing in your AI tool before using the data.

ATTOM covers more than 160 million US properties (vendor claim) with characteristics, ownership, deeds and mortgages, foreclosures, permits, AVMs and risk data. Its REST API is documented publicly and anyone can get a 30-day evaluation key, which makes it the easiest institutional-grade property dataset to try with a custom agent. Bulk files and Snowflake and Databricks delivery suit teams that run agents over their own warehouse.

ATTOM has announced an official MCP server, but access is provisioned through the ATTOM Intelligence Platform via sales, with no public endpoint. API terms limit responses to 100 records, bar caching content for more than 24 hours and forbid using the data to build a database, so check the licence before letting an agent store results.

Cotality runs an MCP server that gives AI agents access to its property data, market analytics and climate risk tools, with developer documentation and setup steps for VS Code, Claude Code, Cursor and Windsurf. The server only exposes the tools your token's scopes allow, so what an agent can do follows your licence. Data is also available through APIs and the Snowflake and Databricks marketplaces.

Access is for licensed customers, with credentials from your account team, and pricing is not published. If you already pay for Cotality data, this is one of the cleanest ways to put it in front of an assistant.

CRED iQ covers CMBS, SASB, CRE CLO and agency loans joined to public records, sales, ownership and comps, with a maturity pipeline, distress signals and valuation models. It is the clearest example of institutional CRE data with published prices for agent access: documented API access starts on the Professional plan at $3,850 a month, and the Enterprise plan adds an MCP server for Claude, ChatGPT and Cursor plus bulk feeds to Snowflake, Databricks and SFTP.

The catch is that the API and MCP documentation are not public, so you see them after you buy, and the Enterprise price is custom. The lower Solo and Starter plans include CSV and Excel exports only.

Placer.ai's MCP server lets Claude, ChatGPT (developer mode), Copilot Studio agents, VS Code and Cursor run Placer analyses on foot traffic, trade areas, visitor demographics, cross-shopping and spend, returning an answer with a link to the full analysis. Sign-in uses your Placer account, and the email on your AI account must match. Separately, the PAPI REST API and data feeds to Azure, S3, GCS or Snowflake serve data teams.

MCP access is an enterprise entitlement granted per account and needs Placer's Pi assistant; it allows three concurrent analyses of up to ten minutes each and consumes Pi credits. The API is a paid add-on with weekly quotas. Plan prices are not published.

Yardi Matrix covers multifamily, affordable, student housing, single-family rental, office, industrial, self storage and land across US markets. Its Matrix Connector for Claude, built on MCP, lets the assistant query Matrix data, and the buy-now page says the connector is included on every plan. APIs and data feeds are available through sales.

Self-serve prices are published per user and per asset class: Starter $199, Professional $699, Expert $999 and Nationwide $1,999 a month. Multi-sector teams pay for each asset class, the connector currently targets Claude only, and the portal terms limit use to internal purposes with no bulk downloads.

Prophia abstracts commercial leases with AI and expert review, and its MCP connector lets ChatGPT, Claude or Gemini query that lease data: finding every lease tied to a tenant, checking insurance and compliance terms, reconciling CAM or modeling scenarios. A public setup guide covers Claude Desktop, Claude Code, Cursor and other clients, with sign-in through your organization's SSO or API keys.

This is your own data, not a market dataset, which avoids most licensing questions. It is only for Prophia customers, MCP must be enabled for the organization, and pricing is quote-based per tenant.

RentCast's API returns rent and value estimates, rental comps, property records and market statistics, and its official MCP server works with Cursor, VS Code, Claude and JetBrains tools. It is one of the few with fully published API prices and a free plan, and its API terms allow storing API data in your own systems and, within the permitted uses, reselling it, which is unusual.

API plans run from a free Developer plan (50 calls a month) to Foundation at $74, Growth at $199 and Scale at $449 a month, with per-call overage. MCP needs an active paid subscription, calls are billed like API calls, and the rate limit is 20 requests per second. Coverage is mainly residential and small multifamily.

Cherre connects, cleans and unifies data from internal systems and outside vendors into one model, and exposes it through a GraphQL API and managed delivery to Snowflake, AWS, Azure, BigQuery and SFTP. For a firm whose agent needs to reason across property management, accounting and third-party data at once, that unified layer is the hard part. RealPage completed its acquisition of Cherre in July 2026.

There is no MCP server and no public developer documentation, and access is through sales. Cherre's terms restrict using the services with third-party AI tools that move licensed data outside your licensed environment, and cap foundation data API calls at 100,000 a day.

LightBox publishes a developer portal with a catalogue of REST APIs covering parcels, property characteristics, building footprints and environmental data, plus bulk delivery and Snowflake. Anyone can open a free developer account and get an app key to start, which makes it easier to evaluate than most commercial data vendors.

There is no MCP server, trial quotas are not documented, an evaluation agreement applies, and pricing is not published.

Parcl Labs provides daily housing market data across US markets: prices, supply, sales, rentals and investor activity. Its AI Connect MCP server works with Claude, ChatGPT and Cursor, and the REST API and CSV downloader serve data teams.

A free account gets 100 credits a month; the Pro plan at $50 every four weeks includes 15,000 credits and AI Connect. Data is residential, the API licence limits use to internal purposes and requires attribution, and the vendor's own pages disagree about which paid plan includes MCP, so check before you buy.

Realie offers county-sourced records on more than 180 million US parcels (vendor claim) through a REST API, a CLI, bulk delivery to S3, GCS or Azure, and an official MCP server for Claude, Cursor and VS Code. Billing counts only successful calls, and the rate limit is 1,200 requests a minute.

Prices are published: a free tier with 25 tokens a month, then $50, $150 and $350 a month for 1,250, 6,000 and 30,000 tokens. A payment method is needed even for free API access. It is a newer vendor focused on property records rather than commercial leases, comps or debt.

Plotzy is a parcel and zoning research platform that tags every parcel with a two-level zoning designation and adds owner contacts, folders and notes. API access is part of its Scale plan, and the site publishes machine-readable files for AI agents (an llms.txt, an API catalogue and an agent skill file) that describe the product and how to authenticate.

There is no MCP server and no public API reference, API credentials are set up through Plotzy support rather than self-registration, and the Scale plan is custom-priced. For an agent that needs zoning-aware parcel search today, Regrid's zoning add-on or Zoneomics' self-serve zoning API are quicker to start with; Plotzy fits teams already using its app who want the same searches in their own tools.

What is an MCP server for real estate data?

An MCP server is a vendor-run connector, built on the open Model Context Protocol, that lets AI assistants such as Claude or ChatGPT call the vendor's data tools directly, for example to look up a parcel or pull rent comps. You sign in with your own account or key, and calls are metered like API calls.

Which CRE data providers have an MCP server?

As of October 2026, Regrid, RentCast, Parcl Labs and Realie publish MCP servers with setup documentation; Cotality, Placer.ai, Prophia and Yardi Matrix offer them to customers; and ATTOM, Trepp, Green Street, CRED iQ (Enterprise) and RevolutionRE provide them through sales or subscriptions.

Does CoStar have an API?

CoStar does not publish a public API, and its terms of use bar exposing its products to outside AI tools. LoopNet, also owned by CoStar Group, has no data API.

Can I use property data with ChatGPT or Claude legally?

Only within your licence. Many vendors allow internal use but bar redistribution or caching, and some, such as BatchData, Cherre and MSCI, restrict third-party AI use specifically. Regrid requires model training to be turned off in your AI tool. Read the terms before connecting.

What is the cheapest way to give an AI agent CRE data?

Self-serve APIs with free tiers: RentCast (50 free calls a month), Parcl Labs (100 free credits a month) and Realie (25 free tokens a month) publish prices, and Regrid offers a trial token. These lean residential; commercial data such as loans and comps costs more and mostly goes through sales.

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