Sequin (BYOK)

Sequin (BYOK) — connector documentation

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

What Sequin (BYOK) is for

Sequin (BYOK) lets an AI assistant read your own Sequin data through the Sequin API with a key you supply (Sequin Cloud API token). Read-only: 8 tools (list_sinks, get_sink, list_sink_backfills, get_sink_backfill, list_postgres_databases, get_postgres_database, list_http_endpoints, get_http_endpoint). 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.sequinstream.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Sequin. Sequin 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:

• "Which Sequin sinks are active and healthy?"
• "Show Sequin sink kafka-ids"
• "How did the Sequin backfills of sink kafka-ids go?"
• "Is Sequin backfill e0c918bb finished?"
• "Which Postgres databases is Sequin replicating from?"
• "Is the replication slot of Sequin database production_rds active?"

What it does

• list_sinks: List sink consumers (Postgres change streams to Kafka, webhooks, queues and more) with status, source database, destination type, actions, tables, filter, transform and health.
• get_sink: Get one sink consumer by id or name: status, tables, actions, filter, transform, routing, batch size and health; destination credentials are not returned.
• list_sink_backfills: List the backfills of a sink (one-off copies of existing table rows) with state, table, row counts and times.
• get_sink_backfill: Get one backfill of a sink: state, table, initial, processed and ingested row counts and times.
• list_postgres_databases: List the Postgres database connections with host, port, database name, SSL flag and replication slot status; passwords are never requested.
• get_postgres_database: Get one Postgres database connection by id or name, with its replication slot and publication status; the password is never requested.
• list_http_endpoints: List HTTP endpoints used by webhook sinks (name and URL, or local path); request headers are not returned.
• get_http_endpoint: Get one webhook HTTP endpoint by id or name (name and URL, or local path); headers are not returned.

BYOK key

You bring your own Sequin Sequin Cloud API token (https://sequinstream.com/docs/management-api/authentication). 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.sequinstream.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.

Notices

Read-only and Sequin Cloud only (self-hosted Sequin is not supported). Passwords, endpoint headers and sink destination credentials are never requested or returned.

Data sources

• https://sequinstream.com/docs/management-api/introduction (the API this connector calls, with a BYOK key)

Live from the Sequin API (api.sequinstream.com) with a BYOK key; documentation: https://sequinstream.com/docs/management-api/introduction. 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 Sequin. Sequin 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 Sequin account.

Built for: Worldwide. Languages: English.

Sequin (BYOK) — Privacy Policy

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

What Sequin (BYOK) is. Sequin (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Sequin data: Read your Sequin Cloud Postgres change-stream sinks, database connections, webhook endpoints and backfills with your own API token. You bring your own Sequin Sequin Cloud API token; the assistant sends it to us with each request.

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

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

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

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

Sequin (BYOK) — Terms of Service

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

1. The Service. Sequin (BYOK) provides: Read your Sequin Cloud Postgres change-stream sinks, database connections, webhook endpoints and backfills with your own API token. 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 Sequin credentials and only access data you are allowed to access. Sequin's terms apply to your use of Sequin; 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 Sequin. Sequin 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 Sequin returns, lightly trimmed; it may be incomplete, delayed or changed by Sequin. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Sequin 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 Sequin'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; Sequin 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 Sequin 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 Sequin 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-sequin

Sequin (BYOK) support

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

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