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Twilio SIP Domains (BYOK) — connector documentation

  • MCP endpoint: https://byok-twilio-sip.connectorbay.com/mcp
  • REST API: POST https://byok-twilio-sip.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-twilio-sip.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: your own Twilio SIP Domains Account SID or API key SID (use a restricted API key, SID starts with SK, rather than the main Auth Token where possible), sent in the X-Upstream-Key header and the Auth Token, or the secret of the API key in X-Upstream-Key-2 of every request (never stored, logged or cached)
  • Health: https://byok-twilio-sip.connectorbay.com/health · Tool schemas: https://byok-twilio-sip.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/byok-twilio-sip · agent@connectorbay.com

What Twilio SIP Domains (BYOK) is for

Twilio SIP Domains (BYOK) lets an AI assistant read your own Twilio SIP Domains data through the Twilio SIP Domains API with a key you supply (Account SID or API key SID (use a restricted API key, SID starts with SK, rather than the main Auth Token where possible)). Read-only: 10 tools (list_sip_domains, get_sip_domain, list_ip_access_control_lists, list_ip_addresses, list_credential_lists, list_domain_ip_acl_mappings, list_domain_credential_list_mappings, list_domain_call_ip_acl_mappings, list_domain_call_credential_list_mappings, list_domain_registration_credential_list_mappings). 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.twilio.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Twilio SIP Domains. Twilio SIP Domains 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 SIP domains do I have in Twilio?"
  • "How is SIP domain SD... configured?"
  • "Which IP access control lists exist in Twilio SIP?"
  • "Which IP addresses are in access list AL...?"
  • "Which SIP credential lists exist?"
  • "Which IP access lists apply to SIP domain SD...?"

What it does

  • list_sip_domains: List SIP domains with domain name, authentication type, registration and secure-media flags and voice URL.
  • get_sip_domain: Get one SIP domain: domain name, auth type, voice URLs, registration, secure-media and emergency calling flags.
  • list_ip_access_control_lists: List IP access control lists with their names.
  • list_ip_addresses: List the IP addresses and CIDR lengths inside one IP access control list.
  • list_credential_lists: List credential lists by name. The usernames and passwords inside them are not read.
  • list_domain_ip_acl_mappings: List the IP access control lists mapped to one SIP domain (used for any SIP request).
  • list_domain_credential_list_mappings: List the credential lists mapped to one SIP domain.
  • list_domain_call_ip_acl_mappings: List the IP access control lists that authenticate incoming calls on one SIP domain.
  • list_domain_call_credential_list_mappings: List the credential lists that authenticate incoming calls on one SIP domain.
  • list_domain_registration_credential_list_mappings: List the credential lists that authenticate SIP registrations on one SIP domain.

BYOK key

You bring your own Twilio SIP Domains Account SID or API key SID (use a restricted API key, SID starts with SK, rather than the main Auth Token where possible) (https://www.twilio.com/docs/iam/api-keys/keys-in-console). 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.twilio.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

Live from the Twilio SIP Domains API (api.twilio.com) with a BYOK key; documentation: https://www.twilio.com/docs/voice/api/sip-domain-resource. 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 Twilio SIP Domains. Twilio SIP Domains 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 Twilio SIP Domains account.

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