Can AI agents automate JustCall?

JustCall is automatable today through its v2 REST API. This record is the JustCall cloud phone product. The developer index describes CRUD for calls, SMS, contacts, agents, and webhooks. API access starts on the Team plan. Credentials are an API key and API secret from the profile menu, APIs and Webhooks. REST calls send Authorization set to the key and secret separated by a colon, plus Accept application/json. Resetting the pair also changes the dynamic webhook signature. The index lists call, SMS, contact, and webhook operations, including update of notes on a completed call. JustCall hosts an MCP server at https://mcp.justcall.host/mcp. The documented header is Authorization Bearer with the same key and secret joined by a colon. Example prompts list numbers, check user availability, and send SMS. https://developer.justcall.io/llms.txt is a first-party documentation index. A published language SDK and connector-catalog pages were not opened. The authentication page names Zapier and Make.com as places that store these credentials. That mention does not establish the connector actions, so those statuses stay unknown. Computer-use viability is unassessed. API and MCP each score 7. API is the best path because the REST header is the documented contract for calls and SMS. MCP uses the same secret pair as an assistant connector.

Best path today: api · Overall automatability: 7/10