Facebook Messenger bot error: The parameter recipient is required

Question

the bash command I used to connect the bot is: curl -ik -X POST 'https://graph.facebook.com/v2.6/me/messages?access_token=#AccessToken'

My error message is:

{"error":{"message":"(#100) The parameter recipient is required","type":"OAuthException","code":100,"fbtrace_id":"EFqWAGq2ABs"}}

Do anyone how to solve it ?

Answer 1

Just in case anyone missed this, I encountered this issue when I accidentally use the wrong content type - I was using application/x-www-form-urlencoded instead of application/json

So my advise overall is,

• Check if you are indeed passing the parameter
• Double check the characters and encoding
• Make sure to use the correct endpoint
• and Make sure to use the correct content type when posting the JSON Request.

Answer 2

You need to send the recipient id param. Try:

curl -X POST -H "Content-Type: application/json" -d '{ "recipient":{"id":"YOUR RECIPIENT ID" }, "message":{ "text":"hello from bot" }}' "https://graph.facebook.com/v2.6/me/messages?access_token=YOUR_ACCESSTOKEN"

Best regards.

Answer 3

There is another reason for this error message: when you send incorrect characters (like a -tab-) Facebook return this error as well so check your return text on special chars.

Answer 4

Please use the "thread_settings" endpoint "https://graph.facebook.com/v2.6/me/thread_settings" as your API endpoint.

You are using the messages endpoint.