{"entry":{"slug":"slack-web-api","name":"Slack Web API","category":"api","summary":"Post messages, read channels and manage a workspace programmatically.","description":"","auth_mode":"Bearer bot token","endpoint":"https://slack.com/api/chat.postMessage","docs_url":"https://api.slack.com/methods/chat.postMessage","tags":["chat","messaging"],"capabilities":["send a slack message","post to a channel","read channel history"],"auth_params":[{"name":"Authorization","location":"header","required":true}],"input_format":"application/json","output_format":"application/json","rate_limit":"1 msg/s per channel","pricing":"free","invocation_example":"curl -X POST https://slack.com/api/chat.postMessage -H \"Authorization: Bearer $SLACK_BOT_TOKEN\" -d '{\"channel\":\"#general\",\"text\":\"hi\"}'","verified":true,"verified_at":"2026-09-22T10:23:13.084+00:00","featured":false,"checks_total":67,"checks_ok":67,"avg_latency_ms":103,"reports_count":0,"health_ok":true,"health_status_code":200,"health_checked_at":"2026-10-31T09:17:12.446+00:00","health_latency_ms":92,"probe_url":null},"watch":{"hint":"Follow \"slack-web-api\": get alerted when it goes down, comes back, or changes shape. Free, 3 tools per key. Email follows are confirmed by a one-click email before alerts start.","how":"POST https://agentnexus.app/api/public/watch with {\"slug\":\"slack-web-api\"} and your x-api-key (the key's email gets the alerts), or add \"email\" / \"webhook_url\". Email follows must be confirmed from the inbox before alerts start."}}