Ziptax (BYOK)

Ziptax (BYOK) — connector documentation

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

What Ziptax (BYOK) is for

Ziptax (BYOK) lets an AI assistant read your own Ziptax data through the Ziptax API with a key you supply (Ziptax API key). Read-only: 6 tools (get_sales_tax_by_address, get_sales_tax_by_coordinates, get_sales_tax_by_postal_code, get_account_usage, search_tic_codes, list_economic_nexus_thresholds). 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.zip-tax.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Ziptax. Ziptax 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:

• "What is the sales tax rate at 200 Spectrum Center Dr, Irvine CA?"
• "What sales tax applies at latitude 33.6521, longitude -117.7449?"
• "What sales tax rates apply in ZIP 92618?"
• "How much of my Ziptax request quota have I used?"
• "Which tax code fits 'prepared sandwiches'?"
• "What is California's economic nexus threshold?"

What it does

• get_sales_tax_by_address: Get the door-level sales tax rate for a street address: base rates by jurisdiction, total rate summaries, sourcing rule and whether services and shipping are taxable. Needs a key with geocoding enabled.
• get_sales_tax_by_coordinates: Get the sales tax rate for a latitude and longitude: base rates, total summaries, sourcing rule and service and shipping taxability. Needs a key with geocoding enabled.
• get_sales_tax_by_postal_code: Get every sales tax rate overlapping a 5-digit US ZIP code (state, county, city and district parts, combined sales and use rates). One ZIP can have several results.
• get_account_usage: Show the key's plan usage this period: requests used, request limit, usage percent and whether the account is active.
• search_tic_codes: Search Taxability Information Codes (TICs) by a free-text product description and return ranked matching codes with names.
• list_economic_nexus_thresholds: List the US state economic nexus thresholds (sales amount, transaction count, how they combine, which sales count, marketplace treatment, measuring period). Reference data, the same for every caller.

BYOK key

You bring your own Ziptax Ziptax API key (https://platform.zip.tax). 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.zip-tax.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://docs.zip.tax/v-6-0/guides/rest-api/overview (the API this connector calls, with a BYOK key)

Live from the Ziptax API (api.zip-tax.com) with a BYOK key; documentation: https://docs.zip.tax/v-6-0/guides/rest-api/overview. 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 Ziptax. Ziptax 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 Ziptax account.

Built for: Worldwide. Languages: English.

Ziptax (BYOK) — Privacy Policy

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

What Ziptax (BYOK) is. Ziptax (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Ziptax data: Look up US and Canadian sales tax rates by address, coordinates or ZIP code, check account usage, search product tax codes and read economic nexus thresholds with your own Ziptax API key. You bring your own Ziptax Ziptax API key; the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one Ziptax 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.zip-tax.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 Ziptax 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 Ziptax receives. The request we make on your behalf, including the key and the arguments, under Ziptax's own terms and privacy policy. Ziptax acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer Ziptax 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 Ziptax 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. Ziptax (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 Ziptax at any time to end all access.

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

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

Ziptax (BYOK) — Terms of Service

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

1. The Service. Ziptax (BYOK) provides: Look up US and Canadian sales tax rates by address, coordinates or ZIP code, check account usage, search product tax codes and read economic nexus thresholds with your own Ziptax API 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 Ziptax credentials and only access data you are allowed to access. Ziptax's terms apply to your use of Ziptax; 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 Ziptax. Ziptax 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 Ziptax returns, lightly trimmed; it may be incomplete, delayed or changed by Ziptax. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Ziptax 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 Ziptax'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; Ziptax 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 Ziptax 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 Ziptax 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-ziptax

Ziptax (BYOK) support

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

• MCP endpoint: https://byok-ziptax.connectorbay.com/mcp
• REST API: https://byok-ziptax.connectorbay.com/openapi.json
• Live status: https://byok-ziptax.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. Ziptax (BYOK) never asks for them.