Retell AI (BYOK)

Retell AI (BYOK) — connector documentation

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

What Retell AI (BYOK) is for

Retell AI (BYOK) lets an AI assistant read your own Retell AI data through the Retell AI API with a key you supply (API key). Read-only: 9 tools (list_calls, get_call, list_chats, list_agents, get_agent, list_phone_numbers, list_voices, list_retell_llms, list_knowledge_bases). 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.retellai.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Retell AI. Retell AI 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 calls did my Retell agents handle recently?"
• "Show the transcript and summary of one Retell call"
• "Which chats did my Retell chat agents have?"
• "Which Retell agents do I have?"
• "Show the configuration of one Retell agent"
• "Which phone numbers are set up in Retell and which agents answer them?"

What it does

• list_calls: List calls (phone and web), newest first, with agent, direction, status, timing, duration, disconnection reason, analysis summary and cost. Transcripts are not included; use get_call for one call.
• get_call: Get one call with transcript, analysis (summary, sentiment, success), timing, cost and metadata.
• list_chats: List text chats (API and SMS), newest first, with agent, status, type, timing, cost and analysis.
• list_agents: List voice and chat agents with name, channel, last modification time and tags.
• get_agent: Get one voice agent: name, version, voice, publish state and response engine.
• list_phone_numbers: List phone numbers with type, nickname, assigned inbound and outbound agents and last modification.
• list_voices: List the voices available to the account with provider, gender, accent, age and a preview audio URL.
• list_retell_llms: List Retell LLM response engines (the prompts and tools behind agents) with model, version, publish state and knowledge bases.
• list_knowledge_bases: List knowledge bases with status, chunk sizes, sources and last refresh time.

BYOK key

You bring your own Retell AI API key (https://dashboard.retellai.com/apiKey). 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.retellai.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: this connector never places calls, sends messages or creates agents, so it does not spend credits. Call records may contain personal data.

Data sources

• https://docs.retellai.com/api-references/list-calls (the API this connector calls, with a BYOK key)

Live from the Retell AI API (api.retellai.com) with a BYOK key; documentation: https://docs.retellai.com/api-references/list-calls. 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 Retell AI. Retell AI 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 Retell AI account.

Built for: Worldwide. Languages: English.

Retell AI (BYOK) — Privacy Policy

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

What Retell AI (BYOK) is. Retell AI (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Retell AI data: Read your Retell AI voice agents, calls with transcripts and analysis, chats, phone numbers, voices, LLMs and knowledge bases with your own API key. You bring your own Retell AI API key; the assistant sends it to us with each request.

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

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

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

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

Retell AI (BYOK) — Terms of Service

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

1. The Service. Retell AI (BYOK) provides: Read your Retell AI voice agents, calls with transcripts and analysis, chats, phone numbers, voices, LLMs and knowledge bases with your own 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 Retell AI credentials and only access data you are allowed to access. Retell AI's terms apply to your use of Retell AI; 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 Retell AI. Retell AI 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 Retell AI returns, lightly trimmed; it may be incomplete, delayed or changed by Retell AI. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Retell AI 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 Retell AI'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; Retell AI 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 Retell AI 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 Retell AI 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-retell

Retell AI (BYOK) support

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

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