feat(slack): GA slack_v2 with agent_view custom-bot manifests

[TheodoreSpeaks]

Caution

DO NOT MERGE — on hold pending Sim Slack app availability (Slack app-review scope approval + native Sim-app trigger mode landing on staging).

Summary

• GA slack_v2: drop the preview flag, register SlackV2BlockMeta, hide the legacy slack block from discovery (existing workflows keep executing — triggers.enabled stays on because webhook-execution gates on it at runtime)
• custom-bot wizard manifests migrate to the agent messaging experience: features.agent_view (new Slack apps can no longer use assistant_view), agent event set (app_home_opened, app_context_changed, message.im), description capped at Slack's 300-char limit
• new app_context_changed trigger event with context (entities) passthrough in the webhook normalizer
• no copilot entitlement — slack_v2 is public, so the evaluator is gone; deploy before mothership PR simstudioai/mothership#365

Type of Change

• New feature

Testing

capabilities + slack provider vitest passing (incl. agent_view/event-set/cap tests), tsc clean, API validation audit passed; exercised live against a real Slack workspace (wizard app creation, mention/DM bots, buttons + modal submits)

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Jul 23, 2026 5:06pm

[cursor]

PR Summary

Medium Risk
GA block discovery changes and Slack manifest/event-model shifts affect new app creation and agent workflows; legacy v1 execution paths are intentionally preserved but coexist with the migration.

Overview
slack_v2 is now GA: the preview gate is removed, SlackV2BlockMeta is registered, and the legacy slack block is hidden from discovery with a sunset pointer to slack_v2 while triggers.enabled stays on so existing v1 webhook workflows keep running.

Custom-bot manifests and the connect wizard move from Slack’s deprecated assistant_view to features.agent_view: the AI capability is labeled AI agent, descriptions use agent_description (capped at 300 chars), and subscribed bot events are app_home_opened, app_context_changed, and message.im instead of assistant_thread_*.

Triggers and webhooks add app_context_changed (catalog + event resolution) and pass context (viewing entities) through the Slack webhook normalizer and shared trigger outputs.

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[greptile-apps]

Greptile Summary

This PR adds Slack v2 entitlement handling and migrates custom Slack apps to the agent messaging experience. The main changes are:

• Adds a per-viewer slack-v2 copilot entitlement.
• Generates agent_view manifests with the new agent event set.
• Normalizes app_context_changed context into trigger output.
• Updates Slack setup copy and manifest tests.

Confidence Score: 5/5

This looks safe to merge after a small trigger-output description cleanup.

• The entitlement remains fail-closed and isolated by workspace and user.
• Agent manifest generation and webhook routing are consistent with the new event set.
• The only identified issue is misleading metadata for the new context output.

apps/sim/triggers/slack/shared.ts

Important Files Changed

Filename	Overview
apps/sim/lib/copilot/entitlements.ts	Adds the fail-closed, per-viewer Slack v2 entitlement evaluation.
apps/sim/triggers/slack/capabilities.ts	Migrates generated manifests to agent_view, updates events, and limits agent descriptions.
apps/sim/lib/webhooks/providers/slack.ts	Recognizes and normalizes app_context_changed events.
apps/sim/triggers/slack/shared.ts	Adds the context output and event catalog entry, but describes the context object as an array.
apps/sim/triggers/slack/capabilities.test.ts	Covers the new manifest feature, event set, fallback text, and description limit.
apps/sim/app/workspace/[workspaceId]/integrations/components/connect-slack-bot-modal/connect-slack-bot-modal.tsx	Updates Slack setup terminology from assistant to agent.

_{Reviews (1): Last reviewed commit: "feat(slack): slack-v2 copilot entitlemen..." | Re-trigger Greptile}

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