Voice and SMS agents that integrate with your infrastructure.

curl https://api.resia.ai/v1/calls \
  -H "Authorization: Bearer $RESIA_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "call_agent_id": "YOUR_CALL_AGENT_ID",
  "to_phone_number": "+15551234567",
  "from_phone_number": "+15557654321",
  "inputs": { "first_name": "Sam" }
}'

import os, uuid, requests

call = requests.post(
    "https://api.resia.ai/v1/calls",
    headers={
        "Authorization": f"Bearer {os.environ['RESIA_API_KEY']}",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "call_agent_id": "YOUR_CALL_AGENT_ID",
        "to_phone_number": "+15551234567",
        "from_phone_number": "+15557654321",
        "inputs": {"first_name": "Sam"},
    },
).json()

# 202 Accepted. Poll GET /v1/calls/{call_id}, or get a call.ended webhook.
print(call["call_id"])

const response = await fetch("https://api.resia.ai/v1/calls", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.RESIA_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify({
    "call_agent_id": "YOUR_CALL_AGENT_ID",
    "to_phone_number": "+15551234567",
    "from_phone_number": "+15557654321",
    "inputs": { "first_name": "Sam" }
  }),
});

// 202 Accepted. Poll GET /v1/calls/{call_id}, or get a call.ended webhook.
const call = await response.json();

Set up Resia for this project. Resia places and answers phone calls through an HTTP API.

Read these first, in this order:
1. https://api.resia.ai/llms.txt - the index of everything you need.
2. https://api.resia.ai/docs - the task guides.
3. https://api.resia.ai/openapi.json - the complete contract.

Facts:
- Base URL: https://api.resia.ai. Every route is under /v1.
- Send the API key as "Authorization: Bearer <key>". I create it in the Resia portal (https://app.resia.ai/keys) and put it in RESIA_API_KEY. Never ask me to paste it here, and never commit it.
- POST /v1/calls answers 202. Poll GET /v1/calls/{call_id}, or set call_ended_webhook_url.
- Destinations are US and Canada numbers in E.164 form. Calls can use paid credit. Dial only a number I give you.

Ask me what the call must do and which number is mine, then create one Call Agent and place one test call.