The request names Slack, so Slack comes first: its page describes it as a work platform for managing projects, automating workflows and connecting teams 1, and its official Web API offers actions such as chat_postMessage to send messages to a channel 11. Its message-sending and update actions cover the core messaging work, while the Slack templates themselves are not described in the sources read here.
- 1
Slack Web APIslack.comverified and signed
Slack's official Web API, with actions such as search_messages to search messages, chat_postMessage to send a message to a channel and chat_update to update a message 111.
official:API · Slack Web APISDK · @slack/web-api+210 community tools built for it
for agents: search_messages · chat_postMessage · chat_update
- 2
SendGrid Email APItwilio.comverified and signed
Twilio SendGrid's email API offers actions to create and retrieve transactional email templates, such as POST_templates to create a transactional template 919.
official:API · Email Activity (beta)+13 community tools built for it
for agents: GET_templates-template_id · POST_templates · GET_templates
- 3
Sources
- 1Slack | AI Work Platform & Productivity Toolsslack.com · read 2026-10-29
- 9SendGrid Email API and Email Marketing Campaigns | Twiliotwilio.com · read 2026-10-29
- 10Mattermost | Operational and AI Sovereignty for Critical Infrastructure and National Securitymattermost.com · read 2026-10-29
- 11Slack Web API: declares "search_messages" (the record we read and signed)unfragile.ai · read 2026-10-24
- 19Email Activity (beta): declares "GET_templates-template_id" (the record we read and signed)unfragile.ai · read 2026-10-24
- 20Mattermost (Activepieces): declares "custom_api_call" (the record we read and signed)unfragile.ai · read 2026-10-24
For agents: the 10 actions behind this answer
search_messages · Slack Web API verified and signed
Searches for messages matching a query.
ai_alpha_search_messages · Slack AI Plugin verified and signed
Search for messages matching a query
· MEOK Slack Messaging website read, tools not yet checked
Start a source-backed conversation with MEOK. Read public evidence, keep a useful brief and reopen it later. Private AI staff and voice are not connected yet.
SonarSource/gh-action_slack-notify · Slack Notify verified and signed
GitHub Action to send Slack notifications for failed GitHub Checks
hashicorp/actions-slack-status · Slack Status Notification verified and signed
Slack Status Notification (replacement for circleci_slack_status orb).
· slacking.biz website read, tools not yet checked
· slackbuilds [Slackermedia Handbook] website read, tools not yet checked
· Slackware website read, tools not yet checked
Alien BOB's Slackware Linux and Slackware based projects mirror site.
· Slackware Linux Essentials website read, tools not yet checked
GET_templates-template_id · Email Activity (beta) verified and signed
Retrieve a single transactional template.
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.