Add Lists operations and improve Canvas support in Slack by TheodoreSpeaks · Pull Request #8213 · simstudioai/sim

TheodoreSpeaks · 2026-09-23T23:41:06Z

Summary

Add seven Lists operations to the existing Slack block so workflows can create trackers and read, create, update, or delete their rows. Canvas remains in the same Slack operation menu with its existing operation and tool IDs.

Lists supports creating and renaming Lists, paginated row reads with the parent column schema, and individual row reads and writes. Typed cell validation preserves Slack's different read/write formats and rejects invalid payloads, including ambiguous reference cells.
Lists is custom-bot-only. Selecting a Lists action shows a custom bot credential picker; the executor also rejects native OAuth and managed OAuth credentials. Native Sim OAuth scopes, managed-user scopes, and the search app manifest remain unchanged.
Custom bot setup selects every available permission by default, including Lists and Canvas. Workspace and organization app manifests include the full supported member-account scope set without a separate Member access selector. Reconnecting preserves the existing Slack app manifest and permissions while updating only the credentials saved in Sim.
Canvas gains whole-document replacement in the existing Edit Canvas operation, rejects blank Markdown without changing meaningful whitespace, and propagates Slack errors clearly. Its existing native and custom-bot support remains available.
Document both resource types on the existing Slack integration page and update generated tool and deployment metadata.

Type of Change

New feature
Bug fix
Documentation

Testing

Focused Vitest suites passed for Lists requests/responses, Slack and Canvas operations, block routing, custom-bot field visibility, credentials, capability selection, and workspace/organization reconnects.
Credential regression coverage rejects native OAuth, managed OAuth, unknown credential kinds, and a spoofed credential-type input for Lists. A resolved custom bot can execute the same operation.
Full lint, all 49 repository audits, block registry validation, generated metadata/docs freshness, and git diff --check passed.
Verified in the local UI that all 18 permissions are selected by default and the Member access field is absent. All 56 focused permission, manifest, credential-policy, and block tests passed. No live Slack resource operations were performed.
Local TypeScript checks were skipped per request; CI's lint/type-check and build jobs passed.

Lists requires a paid Slack plan and bot access to the resource. Workspace List enumeration, changing an existing List's schema, access management, and whole-List deletion are outside this change. Canvas reads expose metadata, not document contents.

Release

Base branch and deployment target: staging. The staging push pipeline deploys after its gates. This PR does not change a live Slack app or deploy anything. Merge and production deployment require separate explicit approval.

Checklist

Code follows project style guidelines
Self-reviewed my changes
Tests added/updated and passing
I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

vercel · 2026-09-23T23:41:13Z

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1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Sep 24, 2026 1:33am UTC

cubic-dev-ai

All reported issues were addressed across 37 files

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greptile-apps · 2026-09-23T23:45:51Z

Confidence Score: 5/5

The PR appears safe to merge, with no outstanding findings or newly introduced actionable defects identified since the previous review.

Summary

This PR adds Slack Lists operations, extends Canvas editing to support whole-document replacement, strengthens credential and payload validation, and updates Slack custom-bot setup, generated metadata, tests, and documentation.

Adds seven custom-bot-only Slack Lists tools for list and row lifecycle operations.
Preserves existing Canvas operation IDs while adding whole-canvas replacement and clearer provider errors.
Keeps executable tools, block routing, generated metadata, deployment configuration, and documentation aligned.
Changes custom-bot setup to select the supported capability set and full managed-user scopes by default.
Reconnect flows preserve the existing Slack app manifest while updating credentials stored in Sim.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  A[Slack workflow block] --> B{Selected operation}
  B -->|Lists| C[Require custom-bot credential]
  B -->|Canvas| D[Use existing Slack credential support]
  C --> E[Validate list and typed-cell inputs]
  E --> F[Slack Lists API]
  D --> G[Validate Canvas edit inputs]
  G --> H[Slack Canvas API]
  F --> I[Structured workflow output]
  H --> I

_{Reviews (6) · Last reviewed commit: "test(slack): update embedded setup expec..."}

…canvas-blocks # Conflicts: # apps/sim/tools/generated/tool-metadata.ts # apps/sim/tools/generated/tool-outputs.ts # apps/sim/tools/index.test.ts

TheodoreSpeaks · 2026-09-24T00:42:56Z

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All reported issues were addressed across 30 files

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TheodoreSpeaks · 2026-09-24T00:53:56Z

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TheodoreSpeaks · 2026-09-24T01:25:55Z

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TheodoreSpeaks · 2026-09-24T01:33:26Z

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No issues found across 31 files

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Add Slack Lists and Canvas blocks with custom-bot Lists access

95c2729

vercel Bot deployed to Preview September 23, 2026 23:42 View deployment

cubic-dev-ai Bot reviewed Sep 23, 2026

View reviewed changes

Comment thread apps/sim/triggers/slack/capabilities.ts

Comment thread apps/sim/tools/slack/edit_canvas.ts Outdated

Comment thread apps/sim/blocks/blocks/slack_lists.ts Outdated

Comment thread apps/sim/tools/slack_lists/validation.ts

greptile-apps Bot reviewed Sep 23, 2026

View reviewed changes

Comment thread apps/sim/triggers/slack/capabilities.ts

Comment thread apps/sim/blocks/blocks/slack_canvas.ts Outdated

Comment thread apps/sim/blocks/blocks/slack_canvas.ts Outdated

TheodoreSpeaks added 2 commits September 23, 2026 16:49

Keep Lists and Canvas actions in the existing Slack block

922ec97

Merge remote-tracking branch 'origin/staging' into codex/slack-lists-…

490ae31

…canvas-blocks # Conflicts: # apps/sim/tools/generated/tool-metadata.ts # apps/sim/tools/generated/tool-outputs.ts # apps/sim/tools/index.test.ts

TheodoreSpeaks changed the title ~~Add Slack Lists and Canvas blocks~~ Add Lists operations and improve Canvas support in Slack Sep 23, 2026

Drop unrelated import formatting from staging merge

e0565e3

vercel Bot temporarily deployed to Preview September 23, 2026 23:53 Inactive

fix(slack): keep optional scopes opt-in and validate resource inputs

775a1ab

vercel Bot temporarily deployed to Preview September 24, 2026 00:41 Inactive

greptile-apps Bot reviewed Sep 24, 2026

View reviewed changes

Comment thread ...ce/[workspaceId]/integrations/components/connect-slack-bot-modal/connect-slack-bot-modal.tsx