Docs

Quickstart

Four requests: profile, connection, account and post.

1. Get your API key

Open the dashboard, go to API keys and create one. It is shown only once: keep it in an environment variable.

bash

export CRIER_API_KEY="crier_live_…"

2. Create a profile

A profile groups the accounts of one brand or one of your customers. Keep its id.

POST /v1/profiles

curl -X POST "https://api.usecrier.com/v1/profiles" \
  -H "Authorization: Bearer $CRIER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Acme",
    "timezone": "Europe/Madrid"
  }'

const res = await fetch('https://api.usecrier.com/v1/profiles', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.CRIER_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "name": "Acme",
    "timezone": "Europe/Madrid"
  }),
});
const { data } = await res.json();

import os, requests

res = requests.post(
    "https://api.usecrier.com/v1/profiles",
    headers={"Authorization": f"Bearer {os.environ['CRIER_API_KEY']}"},
    json={
        "name": "Acme",
        "timezone": "Europe/Madrid"
    },
)
data = res.json()["data"]

201 Created

{
  "data": {
    "id": "prf_8f2k4d",
    "name": "Acme",
    "timezone": "Europe/Madrid",
    "createdAt": "2026-10-23T10:00:00.000Z",
    "updatedAt": "2026-10-23T10:00:00.000Z"
  }
}

3. Connect an account

Ask for the network’s connect URL and open it in the user’s browser. Once they authorize, they come back to your redirectUrl.

GET /v1/connect/instagram

curl "https://api.usecrier.com/v1/connect/instagram?profileId=prf_8f2k4d&redirectUrl=https%3A%2F%2Fapp.acme.com%2Fconnected" \
  -H "Authorization: Bearer $CRIER_API_KEY"

const res = await fetch('https://api.usecrier.com/v1/connect/instagram?profileId=prf_8f2k4d&redirectUrl=https%3A%2F%2Fapp.acme.com%2Fconnected', {
  headers: {
    Authorization: `Bearer ${process.env.CRIER_API_KEY}`,
  },
});
const { data } = await res.json();

import os, requests

res = requests.get(
    "https://api.usecrier.com/v1/connect/instagram?profileId=prf_8f2k4d&redirectUrl=https%3A%2F%2Fapp.acme.com%2Fconnected",
    headers={"Authorization": f"Bearer {os.environ['CRIER_API_KEY']}"},
)
data = res.json()["data"]

Back in your app

https://app.acme.com/connected?connected=instagram&accountId=acc_3k9x2m&username=acme

4. Post

Send the text and the accounts. Without scheduledFor it goes out right away.

POST /v1/posts

curl -X POST "https://api.usecrier.com/v1/posts" \
  -H "Authorization: Bearer $CRIER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "Hello from Crier! 👋",
    "targets": [
      {
        "accountId": "acc_3k9x2m"
      }
    ]
  }'

const res = await fetch('https://api.usecrier.com/v1/posts', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.CRIER_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "content": "Hello from Crier! 👋",
    "targets": [
      {
        "accountId": "acc_3k9x2m"
      }
    ]
  }),
});
const { data } = await res.json();

import os, requests

res = requests.post(
    "https://api.usecrier.com/v1/posts",
    headers={"Authorization": f"Bearer {os.environ['CRIER_API_KEY']}"},
    json={
        "content": "Hello from Crier! 👋",
        "targets": [
            {
                "accountId": "acc_3k9x2m"
            }
        ]
    },
)
data = res.json()["data"]