place_call

io.github.hail-hq/hail-mcp · Verify this server

Originate an outbound phone call. Provide ``system_prompt`` (mode A — Hail's bundled fallback LLM uses this prompt) or ``llm`` (mode B — bring your own OpenAI-compatible endpoint as ``{"base_url": ..., "api_key": ..., "model": ...}``), or both, or ``agent_id`` (a saved agent from ``list_agents`` supplies the prompt, first message, AI line, voice and tools; fields you pass here win). At least one is required. Passing both runs your prompt on your own endpoint: it receives Hail's voice preamble plus your prompt as the leading system message. ``to`` must be E.164 (e.g. ``+14155551234``). ``from_`` is optional and defaults to the first active number on your org. ``first_message`` is spoken verbatim on pickup; omit it to let the agent open the conversation itself — it reacts to how the call was answered, or introduces itself after silence. ``language`` sets the call's spoken language for speech-to-text, text-to-speech, and turn detection, as a lowercase ISO 639-1 code (e.g. ``"da"``); 39 languages are supported (server rejects others with 422); omit for English. STT provider selection is console-BYO-only (no per-call override); configure it on the organization to pin a provider. ``ai_disclosure=False`` skips the spoken "this is an AI assistant" line at the start of the call. Leave enabled unless the user has verified it is not required for this call — US artificial-voice calls (47 CFR 64.1200(b)(1)) and several AI bot-disclosure laws require it, and Hail does not verify this. The agent still identifies itself as an AI if asked. ``metadata`` is free-form JSON attached to the call record. ``tools`` are the agent tools to allow on this call. Omit for all available; pass ``[]`` to disable. ``recipient_consent`` is required: attest that you (the caller triggering this request) have obtained the lawful consent needed to contact this recipient. The API rejects the request (422) if this is not ``true`` — Hail does not verify consent for you, you are responsible for having a lawful basis (TCPA / ePrivacy / GDPR as applicable). Set ``message_type="marketing"`` for promotional calls (this additionally requires a non-empty ``consent_source`` describing how/where consent was obtained) — leave as the default ``"informational"`` for transactional/service calls. ``idempotency_key`` defaults to a fresh UUID per invocation and is returned in the response under ``idempotency_key`` — to retry *this* exact request (rather than dispatch a second call), pass the value back on the retry. A new key is a new call. Example: place_call(to="+14155551234", recipient_consent=True, system_prompt="You are scheduling a haircut.", first_message="Hi, I'm calling on behalf of Alex.") Returns the API's ``CallResponse`` as a dict (id, status, from_e164, to_e164, ...). On failure returns ``{"error": "<message>"}`` instead.