feat: add mcp_servers field to app manifest#580
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Support MCP server configuration in the app manifest with url, auth_provider_key, and auth_type fields for Slack MCP Client integration. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #580 +/- ##
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+ Coverage 71.64% 71.66% +0.02%
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Files 226 226
Lines 19148 19148
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+ Hits 13718 13723 +5
+ Misses 4221 4218 -3
+ Partials 1209 1207 -2 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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zimeg
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Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
srtaalej
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Jun 9, 2026
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looks great!! mcp_servers serializing correctly ⭐
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@srtaalej Thanks for taking this for a test as well! I'll merge it now for an upcoming release. |
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Changelog
🔍 Note: This might appear perhaps before rollout completes but tooling hopes to support MCP throughout this process with changes as needed.
Summary
This pull request adds the
mcp_serversfield to the app manifest struct, so apps can make MCP server connections available.Supported fields:
url: Required. HTTPS endpoint of the MCP serverauth_provider_key: Optional. Reference to anexternal_auth_providersentry for OAuthauth_type: Required. Authentication method -no_auth,slack_identity_auth,manual_auth, ordynamic_client_registrationSchema definition: slackapi/manifest-schema#71
Testing
With the
mcp:connectscope included please confirm the following manifests are installed as expected or that all values appear with:No authentication
{ "display_information": { "name": "MCP Docs Server", "description": "Serves public Slack documentation from MCP" }, "features": { "bot_user": { "display_name": "MCP Docs Server", "always_online": true } }, "oauth_config": { "scopes": { "bot": ["mcp:connect"] } }, "settings": { "org_deploy_enabled": true, "socket_mode_enabled": false, "token_rotation_enabled": false }, "mcp_servers": { "docs": { "url": "https://88bf-170-39-168-237.ngrok-free.app/mcp", "auth_type": "no_auth" } } }Slack-identity authentication
{ "display_information": { "name": "MCP Profile Card", "description": "Looks up Slack user profiles using Slack identity auth" }, "features": { "app_home": {}, "bot_user": { "display_name": "MCP Profile Card", "always_online": true } }, "oauth_config": { "redirect_urls": [ "https://88bf-170-39-168-237.ngrok-free.app/slack/oauth_redirect" ], "scopes": { "bot": [ "mcp:connect", "users:read", "users:read.email" ] } }, "settings": { "socket_mode_enabled": false, "org_deploy_enabled": true, "token_rotation_enabled": false }, "mcp_servers": { "profile": { "url": "https://88bf-170-39-168-237.ngrok-free.app/mcp", "auth_type": "slack_identity_auth" } } }Standard OAuth handshakes
{ "display_information": { "name": "MCP GitHub Server", "description": "Connects to GitHub with External Auth Provider" }, "features": { "app_home": {}, "bot_user": { "display_name": "MCP GitHub Server", "always_online": true } }, "oauth_config": { "scopes": { "bot": [ "mcp:connect" ] } }, "settings": { "socket_mode_enabled": false, "org_deploy_enabled": true, "token_rotation_enabled": false }, "external_auth_providers": { "oauth2": { "github": { "provider_type": "CUSTOM", "options": { "client_id": "YOUR_GITHUB_CLIENT_ID", "scope": [], "provider_name": "GitHub", "authorization_url": "https://github.com/login/oauth/authorize", "token_url": "https://github.com/login/oauth/access_token", "identity_config": { "url": "https://api.github.com/user", "account_identifier": "$.login" }, "use_pkce": false, "token_url_config": { "use_basic_auth_scheme": false } } } } }, "mcp_servers": { "github": { "url": "https://api.githubcopilot.com/mcp/", "auth_provider_key": "github", "auth_type": "manual_auth" } } }Dynamic client registration
{ "display_information": { "name": "MCP Notion Server", "description": "Connects to Notion with Dynamic Client Registration" }, "features": { "bot_user": { "display_name": "MCP Notion Server", "always_online": true } }, "oauth_config": { "scopes": { "bot": ["mcp:connect"] } }, "settings": { "org_deploy_enabled": true, "socket_mode_enabled": false, "token_rotation_enabled": false }, "mcp_servers": { "notion": { "url": "https://mcp.notion.com/mcp", "auth_type": "dynamic_client_registration" } } }Notes
external_auth_providersfield already exists andmcp_serversreferencesauth_provider_keyusing these valuesuse_pkceandtoken_url_configfields added in the schema PR are already supported here since oauth2 provider options use a passthrough*RawJSONvalueRequirements