

boston.gov, because mailchannels don't implement any sender verification[ERROR] A request to the Cloudflare API failed

wrangler secret put CALLS_APP_SECRET you dont need to specify the value in the command. you will write the value when it asks for the secret value/ is marked as a document, /abc.js is marked as js)
boston.govwrangler secret put CALLS_APP_SECRET[ERROR] A request to the Cloudflare API failedwrangler secret put CALLS_APP_SECRET/abc.js