RentCast API
Official vendor OpenAPI document · agent-readyDeveloper ToolsSource ControlapiKey10 EndpointsREST
For Agents
Programmatically sale listings, property records. Covers 10 operations with apiKey authentication.
Use for: I need to sale listings, I want to property records, Search for value estimate, Find all market statistics
Not supported: Does not handle payments, communications, or crm - use for developer tools only.
rentcast.io/main version 1.0. The API exposes 10 endpoints secured with apiKey authentication.
Install Jentic One Beta
Connect the RentCast API to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the RentCast API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
1
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Frentcast.io%2Frentcast" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Frentcast.io%2Frentcast" | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with RentCast API.
Sale Listings
Property Records
Value Estimate
Market Statistics
Random Property Records
Rent Estimate
Use Cases
Patterns agents use RentCast API for, with concrete tasks.
★ Developer Tools Operations
Use the RentCast API to perform developer tools operations programmatically. The API provides 10 endpoints covering core functionality including sale listings, property records, value estimate.
Call GET /listings/sale to sale listings
Automated Avm Management
Automate avm operations by combining multiple RentCast API endpoints. Agents can property records and then value estimate in a single workflow.
Call GET /properties to property records, then verify the result
AI Agent Integration via Jentic
AI agents discover and call RentCast API endpoints through Jentic without managing credentials directly. An agent searches for the required operation by intent, receives the matching endpoint schema, and executes the call with Jentic-managed authentication. This eliminates the need to read API documentation or handle apiKey tokens manually.
Search Jentic for 'sale listings', load the operation schema, and execute with Jentic-managed credentials
Key Endpoints
10 endpoints — rentcast.
METHOD
PATH
DESCRIPTION
GET
/listings/sale
Sale Listings
GET
/properties
Property Records
GET
/avm/value
Value Estimate
GET
/markets
Market Statistics
GET
/properties/{id}
Property Record by Id
GET
/properties/random
Random Property Records
GET
/avm/rent/long-term
Rent Estimate
GET
/listings/rental/long-term
Rental Listings
GET
/listings/sale
Sale Listings
GET
/properties
Property Records
GET
/avm/value
Value Estimate
GET
/markets
Market Statistics
GET
/properties/{id}
Property Record by Id
GET
/properties/random
Random Property Records
GET
/avm/rent/long-term
Rent Estimate
GET
/listings/rental/long-term
Rental Listings
Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring RentCast by hand means sending its API-key request header to api.rentcast.io and mapping its listings, properties, and valuation endpoints yourself. Through Jentic you install once, import RentCast from the API Directory, store the key once, and your agent calls it.
Permission scoping
RentCast puts the property id in the URL path (/properties/{id}), so a rule can pin your agent to reading one property alongside its read-only listings and valuation lookups. You choose the operations it may call, so only the endpoints you allow will run.
Credential isolation
Your RentCast API key is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'find sale listings' or 'estimate a property value', and Jentic returns the matching RentCast operation with its input schema so the agent calls the right endpoint without browsing the reference docs.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using RentCast API through Jentic.
What authentication does the RentCast API use?
The RentCast API uses an API key passed in the `X-Api-Key` header. Through Jentic, these credentials are stored encrypted in your Jentic One instance and injected at execution time, so raw secrets never enter the agent context.
Can I sale listings with the RentCast API?
Yes. Use the GET /listings/sale endpoint. The API returns structured JSON responses that agents can parse and act on directly.
What are the rate limits for the RentCast API?
Rate limits are not specified in the OpenAPI spec. Check the vendor documentation for current limits. Through Jentic, rate limiting is handled automatically with retry logic built into the execution layer.
How do I sale listings through Jentic?
Install the Jentic SDK with pip install jentic, authenticate through Jentic One, the self-hosted execution layer, then search for 'sale listings'. Jentic returns the matching RentCast API operation with its input schema. Load the schema and execute the call - credentials are injected automatically.
How many endpoints does the RentCast API have?
The RentCast API exposes 10 endpoints covering avm, listings, markets operations.
Can I limit what my agent is allowed to do with the RentCast API?
Yes. Jentic One runs self-hosted on your own infrastructure, so your rules decide which RentCast operations and credentials the agent may use. Because RentCast takes the property id in the URL path at GET /properties/{id}, you can pin the agent to reading a single property alongside its read-only listings and valuation lookups such as GET /listings/sale and GET /avm/value. Only the endpoints you allow will run, and your stored API key is injected at execution time rather than exposed to the agent.
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