# Zillow scores 76 out of 100 on the Agent Readiness Index

Zillow reaches level 3, Connectable. Identity and delegation is the strongest area at 90 out of 100. Protocol access is the weakest at 64.

Zillow was scanned on October 15, 2026. Its score is 76 out of 100, level 3, Connectable. An agent can connect through an MCP server or a public API program. To reach level 4, Trusted: Let customers authorize agents: OAuth with PKCE, a registration path and documented delegate controls.

Website: [zillow.com](https://www.zillow.com)

## Score by area

| Area | Score | What it asks |
| --- | --- | --- |
| Discoverability | 72 out of 100, worth 15 points | Can an agent find and read your pages? |
| Protocol access | 64 out of 100, worth 20 points | Can an agent connect to you through MCP or an API? |
| Identity and delegation | 90 out of 100, worth 20 points | Can a customer give an agent limited access without sharing a password? |
| Web experience | 79 out of 100, worth 15 points | Does your site work when an agent uses it? |
| Voice and IVR | Not measured yet | What happens when an agent calls your phone line? |
| Policy and governance | Not measured yet | Do your terms allow agents that act for customers? |

## What is holding Zillow back

1. **Developer and data sharing program**, 4 points lost. No developer portal or data sharing program was found on public pages. Fix: Document the program, the standard in use for example FDX in US banking, the supported partners and a sandbox.
2. **Documented delegate and data sharing controls**, 4 points lost. No public page on delegate access or connected app controls was found. Fix: Publish a help page on delegate access and add a connected apps screen where customers revoke access.
3. **Sign in page loads for a declared agent in a browser**, 4 points lost. The sign in address that was tried returned status 404, so the sign in page itself could not be confirmed. Fix: Serve the sign in page to verified agent browsers, and use signed agent identity to separate them from attackers.
4. **llms.txt guide for agents**, 3 points lost. No llms.txt file was found at the site root. Fix: Publish /llms.txt with links to product, pricing, support and location pages.

## What already works

- MCP server
- OAuth and OpenID metadata
- PKCE and client registration

## How Zillow compares

The average score for lenders is 47.1 out of 100 across 16 organizations. The average across all 1,421 scored organizations is 42.2 out of 100.

## Similar organizations

- [Prosper](https://readyindex.ai/prosper_com), 70 out of 100
- [SoFi](https://readyindex.ai/sofi_com), 68 out of 100
- [OneMain Financial](https://readyindex.ai/onemainfinancial_com), 63 out of 100

## More on this report

- [This report as markdown](https://readyindex.ai/zillow_com.md)
- [This report as JSON data](https://readyindex.ai/api/reports/zillow_com)
- [How the score is worked out](https://readyindex.ai/method)
- [All leaderboards](https://readyindex.ai/leaderboards)
- [Every scored organization](https://readyindex.ai/organizations)
- [Scan your own website](https://readyindex.ai/)

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Source: https://readyindex.ai/zillow_com
Updated: 2026-10-15
From the Agent Readiness Index by Encore AI. When you quote a score, please link to the report it came from.