from flask import Flask, jsonify, request
app = Flask(__name__)
app.config.from_envvar('CONF')

@app.route("/echo", methods=['POST'])
def echo():
    d = {'response_type': 'in_channel',
         'text': "I'm the echo bot!"
         'attachments': [
             {'text':request.form['text']}
         ]
    }
    return jsonify(d)

if __name__=="__main__":
    app.run()