ATTOM (BYOK)

ATTOM (BYOK) — connector documentation

• MCP endpoint: https://byok-attom.connectorbay.com/mcp
• REST API: POST https://byok-attom.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-attom.connectorbay.com/openapi.json
• Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
• Authentication: your own ATTOM ATTOM API key, sent in the X-Upstream-Key header of every request (never stored, logged or cached)
• Health: https://byok-attom.connectorbay.com/health · Tool schemas: https://byok-attom.connectorbay.com/tools.json
• Publisher: Unify Dynamics LLC · connectorbay.com/byok-attom · agent@connectorbay.com

What ATTOM (BYOK) is for

ATTOM (BYOK) lets an AI assistant read your own ATTOM data through the ATTOM API with a key you supply (ATTOM API key). Read-only: 10 tools (get_property_detail, get_property_basic_profile, get_property_expanded_profile, search_property_snapshots, get_assessment_detail, get_sale_detail, get_sales_history, get_avm_detail, search_schools, get_sales_trend). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to api.gateway.attomdata.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by ATTOM. ATTOM and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

• "Show the ATTOM property detail for 468 Sequoia Dr, Smyrna, DE 19977"
• "Give me a basic profile of 468 Sequoia Dr, Smyrna, DE 19977"
• "Give me the expanded ATTOM profile of 468 Sequoia Dr, Smyrna, DE 19977"
• "List single-family homes with 3 or 4 bedrooms in ZIP 19977"
• "What is the assessed value and tax of 468 Sequoia Dr, Smyrna, DE 19977?"
• "When did 468 Sequoia Dr, Smyrna, DE 19977 last sell and for how much?"

What it does

• get_property_detail: Get the detailed property record for one property named by ATTOM id or by address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_property_basic_profile: Get the basic profile of one property named by ATTOM id or address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_property_expanded_profile: Get the expanded profile of one property named by ATTOM id or address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• search_property_snapshots: Search properties in a ZIP code or around a point and get a snapshot of each, filtered by type, bedrooms and year built; up to 100 records per response. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_assessment_detail: Get the assessment detail (assessed values and taxes) of one property named by ATTOM id or address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_sale_detail: Get the most recent sale of one property named by ATTOM id or address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_sales_history: Get the sales history of one property named by ATTOM id or address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_avm_detail: Get ATTOM's automated valuation model (AVM) detail for one property named by ATTOM id or address. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• search_schools: Search schools in an area identified by an ATTOM geoIdV4 code, or around a latitude and longitude with a radius. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).
• get_sales_trend: Get sales trend statistics for an area identified by an ATTOM geoIdV4 code over a range of years, quarters or months. The documentation lists no response fields, so the full ATTOM answer is returned (trimmed to fit).

BYOK key

You bring your own ATTOM ATTOM API key (https://api.developer.attomdata.com/docs). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to api.gateway.attomdata.com over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

• https://api.developer.attomdata.com/docs (the API this connector calls, with a BYOK key)

Live from the ATTOM API (api.gateway.attomdata.com) with a BYOK key; documentation: https://api.developer.attomdata.com/docs. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by ATTOM. ATTOM and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your ATTOM account.

Built for: Worldwide. Languages: English.

ATTOM (BYOK) — Privacy Policy

Effective 24 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What ATTOM (BYOK) is. ATTOM (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own ATTOM data: Look up US property details, assessments, sales history, valuations, schools and sales trends from the ATTOM Property API with your own ATTOM key. You bring your own ATTOM ATTOM API key; the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one ATTOM call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to api.gateway.attomdata.com, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If ATTOM rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What ATTOM receives. The request we make on your behalf, including the key and the arguments, under ATTOM's own terms and privacy policy. ATTOM acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer ATTOM gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your ATTOM data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. ATTOM (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at ATTOM at any time to end all access.

Children. ATTOM (BYOK) is a general-audience service operated by the adult using the assistant, under ATTOM's own age rules.

Changes. We will post changes here with a new effective date.

ATTOM (BYOK) — Terms of Service

Effective 24 October 2026. These terms govern use of the ATTOM (BYOK) connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

1. The Service. ATTOM (BYOK) provides: Look up US property details, assessments, sales history, valuations, schools and sales trends from the ATTOM Property API with your own ATTOM key. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
2. Your own key, your own account. You must use your own ATTOM credentials and only access data you are allowed to access. ATTOM's terms apply to your use of ATTOM; you are responsible for complying with them, including any rate limits and permitted uses. Do not share a key you do not own.
3. Independent. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by ATTOM. ATTOM and its logos are trademarks of their owners and are used only to say which service the connector works with.
4. No advice, no guarantees. Output is the data ATTOM returns, lightly trimmed; it may be incomplete, delayed or changed by ATTOM. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your ATTOM account.
6. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to access data you are not entitled to, to circumvent ATTOM's controls, or to attack any system.
7. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time; ATTOM may change or end its API at any time.
8. Data. Our Privacy Policy describes what we process. In short: the BYOK key is used for the one call and not stored or logged.
9. Pro keys. Optional ConnectorBay Pro API keys are issued at our discretion and are separate from your ATTOM key.
10. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service, including any action ATTOM takes on your account. Our total liability is limited to US $100.
11. Governing law. California law; venue in San Mateo County, California.
12. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/byok-attom

ATTOM (BYOK) support

Email agent@connectorbay.com. We answer within two business days.

• MCP endpoint: https://byok-attom.connectorbay.com/mcp
• REST API: https://byok-attom.connectorbay.com/openapi.json
• Live status: https://byok-attom.connectorbay.com/health

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. ATTOM (BYOK) never asks for them.