Applications › Messaging & Team Chat

Messaging & Team Chat

What 7 leading Messaging & Team Chat apps are built on: the providers each one ships in its code or lists as an integration, grouped by layer and capability, and joined to the catalog.

7 reference apps 79 providers 36 observed in code 43 declared only 100.0% in the catalog 53.7 mean Kin Score 40 with a verified MCP server

How to read this. observed the integration ships in the app (SDK in a dependency file, source code, or an Android build analysis). declared the app names the integration itself (README, integrations page, store listing). Every row links the source it was read from. Providers not yet in the catalog are marked queued for profiling. Blueprint by API Evangelist, CC BY-NC-SA 4.0. Capabilities marked Turbo EA come from Turbo EA Capabilities by Vincent Verdet, CC BY 4.0 (notice); those marked API Evangelist extension are CC BY-NC-SA 4.0. Android build analyses: Exodus Privacy (reports.exodus-privacy.eu.org).

domain layer 19 capabilities

Account Linking 20 providers · AE-160.10.40 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
X (Twitter)	observed [1] [2]	Discord, Rocket.Chat	73.0 exemplar	61.2 agent-native	verified
GitHub	declared [1]	Discord	81.8 exemplar	63.4 agent-ready	verified
YouTube	declared [1]	Discord	59.6 strong	38.4 agent-ready	none found
PayPal	declared [1]	Discord	52.9 developing	37.1 agent-ready	verified
eBay	declared [1]	Discord	51.0 developing	32.0 agent-ready	verified
Twitch	declared [1]	Discord	50.5 developing	32.2 agent-ready	none found
Spotify	declared [1]	Discord	48.4 developing	33.3 agent-ready	none found
Bluesky	declared [1]	Discord	45.1 developing	26.2 agent-aware	none found
Reddit	declared [1]	Discord	43.3 developing	23.7 agent-aware	verified
Facebook	declared [1]	Discord	42.7 developing	28.2 agent-aware	none found
TikTok	declared [1]	Discord	41.0 developing	19.6 agent-aware	none found
Epic Games	declared [1]	Discord	40.9 developing	22.4 agent-aware	none found
Steam	declared [1]	Discord	32.8 thin	22.7 agent-aware	none found
Roblox	declared [1]	Discord	29.5 thin	3.1 human-only	verified
Mastodon	declared [1]	Discord	26.5 thin	22.5 agent-aware	none found
Amazon Music	declared [1]	Discord	22.3 emerging	10.8 agent-aware	—
Xbox	declared [1]	Discord	21.8 emerging	0.6 human-only	none found
PlayStation Network	declared [1]	Discord	21.5 emerging	0.0 human-only	none found
Crunchyroll	declared [1]	Discord	8.8 minimal	15.1 agent-aware	—
Bungie.net	declared [1]	Discord	7.7 minimal	0.0 human-only	none found

Social & Federated Login 5 providers · AE-160.10.30 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google SSO	observed [1] [2] [3]	Mattermost, Rocket.Chat, Zulip	36.8 thin	19.6 agent-aware	none found
GitLab	observed [1] [2]	Mattermost, Zulip	82.6 exemplar	46.4 agent-ready	verified
GitHub	observed [1] [2]	Rocket.Chat, Zulip	81.8 exemplar	63.4 agent-ready	verified
Office 365 / Entra ID SSO	observed [1] [2]	Mattermost, Zulip	60.0 strong	26.4 agent-aware	none found
Discord	observed [1]	Zulip	46.4 developing	30.6 agent-ready	none found

Video Calling 4 providers · AE-150.60 · API Evangelist extension

Video Calling capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Zoom	declared [1] [2]	Mattermost, Slack	56.2 strong	55.2 agent-ready	verified
Jitsi	observed [1]	Element / Matrix (Synapse)	33.3 thin	3.8 human-only	none found
LiveKit	observed [1]	Rocket.Chat	31.5 thin	24.4 agent-aware	none found
Pexip	declared [1]	Mattermost	29.4 thin	0.0 human-only	—

Project Management 3 providers · BC-900.30 · Turbo EA

Project Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Jira	declared [1] [2]	Mattermost, Slack	81.6 exemplar	65.7 agent-ready	verified
Asana	declared [1]	Slack	74.1 exemplar	53.7 agent-ready	verified
Notion	declared [1]	Slack	67.2 exemplar	54.9 agent-ready	verified

Cloud Drive & File Sync 3 providers · AE-916 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Box	declared [1]	Slack	65.0 strong	57.4 agent-ready	verified
Google Drive	declared [1]	Slack	53.4 developing	43.2 agent-ready	verified
Dropbox	declared [1]	Slack	47.5 developing	45.8 agent-ready	verified

Customer Service Management 3 providers · BC-430 · Turbo EA

Customer Service Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Zendesk	declared [1]	Slack	72.8 exemplar	35.0 agent-ready	none found
Salesforce Service Cloud	declared [1]	Slack	72.0 exemplar	46.2 agent-ready	none found
Freshdesk	declared [1]	Slack	30.7 thin	29.8 agent-ready	none found

Hosted LLM Inference 3 providers · AE-110.10.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Claude	declared [1]	Slack	89.0 exemplar	47.6 agent-ready	verified
ChatGPT / Codex	declared [1]	Slack	83.0 exemplar	58.4 agent-native	verified
Writer	declared [1]	Slack	37.3 thin	27.1 agent-aware	verified

Software Construction Management 2 providers · BC-4200.40 · Turbo EA

Software Construction Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
GitHub	declared [1] [2]	Mattermost, Slack	81.8 exemplar	63.4 agent-ready	verified
GitLab	declared [1]	Slack	82.6 exemplar	46.4 agent-ready	verified

Customer Relationship Management 2 providers · BC-420 · Turbo EA

Customer Relationship Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
HubSpot	declared [1]	Slack	94.8 exemplar	52.7 agent-ready	verified
Salesforce Sales Cloud	declared [1]	Slack	90.4 exemplar	54.7 agent-ready	verified

Internal Communications Management 2 providers · BC-850.10 · Turbo EA

Internal Communications Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Slack	observed [1]	Rocket.Chat	73.2 exemplar	38.7 agent-ready	verified
Microsoft Teams	declared [1]	Mattermost	56.2 strong	34.2 agent-ready	none found

Observability Management 2 providers · BC-4220.20 · Turbo EA

Observability Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
AWS Chatbot	declared [1]	Slack	67.3 exemplar	37.5 agent-ready	none found
Splunk	declared [1]	Mattermost	64.9 strong	48.0 agent-ready	none found

Channel Sales Management 1 providers · BC-410.60 · Turbo EA

Channel Sales Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Highspot	declared [1]	Slack	44.4 developing	29.9 agent-ready	verified

Design & Creative Editing 1 providers · AE-170.80 · API Evangelist extension

Design & Creative Editing capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Miro	declared [1]	Slack	43.1 developing	39.1 agent-ready	verified

Incident Response Management 1 providers · BC-4220.30 · Turbo EA

Incident Response Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
PagerDuty	declared [1]	Slack	45.1 developing	48.9 agent-ready	verified

Lead Data 1 providers · AE-230.30.20 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
ZoomInfo	declared [1]	Slack	86.6 exemplar	64.3 agent-ready	verified

Mailbox & Calendar Sync 1 providers · AE-150.80 · API Evangelist extension

Mailbox & Calendar Sync capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Microsoft Calendar / Outlook	declared [1]	Mattermost	65.9 strong	48.6 agent-ready	verified

Remittances & P2P 1 providers · AE-190.40 · API Evangelist extension

Remittances & P2P capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
MobileCoin	observed [1]	Signal	34.2 thin	6.3 agent-aware	none found

SMS 1 providers · AE-150.20.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Twilio	observed [1]	Rocket.Chat	93.2 exemplar	56.4 agent-native	verified

Spreadsheets & No-Code Databases 1 providers · AE-922 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Sheets	declared [1]	Slack	57.0 strong	33.0 agent-ready	none found

common layer 14 capabilities

Observability Management 3 providers · BC-4220.20 · Turbo EA

Observability Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Sentry	observed [1] [2] [3]	Discord, Element / Matrix (Synapse), Mattermost, Slack, Zulip	80.6 exemplar	50.2 agent-ready	verified
Bugsnag	observed [1]	Rocket.Chat	78.5 exemplar	53.1 agent-ready	verified
Firebase (Crashlytics, Analytics)	observed [1]	Rocket.Chat	50.3 developing	14.2 agent-aware	verified

Push Notifications 2 providers · AE-150.30 · API Evangelist extension

Push Notifications capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Apple (APNs, Sign in with Apple)	observed [1] [2]	Rocket.Chat, Zulip	55.2 strong	31.9 agent-ready	none found
Firebase Cloud Messaging	observed [1] [2]	Signal, Zulip	50.3 developing	14.2 agent-aware	verified

Storage Management 3 providers · BC-600.50.20 · Turbo EA

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Amazon S3	observed [1] [2]	Rocket.Chat, Zulip	70.8 exemplar	23.3 agent-aware	verified
Google Cloud Storage	observed [1]	Rocket.Chat	65.1 strong	33.3 agent-ready	verified
Azure Blob Storage	observed [1]	Mattermost	55.5 strong	26.9 agent-aware	verified

In-App Ad Monetisation 1 providers · AE-903 · API Evangelist extension

In-App Ad Monetisation capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google AdMob	observed [1] [2]	Element / Matrix (Synapse), Mattermost	61.5 strong	34.0 agent-ready	none found

Payment Processing Management 1 providers · BC-1340.20 · Turbo EA

Payment Processing Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Stripe	observed [1] [2]	Signal, Zulip	82.7 exemplar	58.5 agent-native	verified

Product Usage Analytics 2 providers · BC-4280.30 · Turbo EA

Product Usage Analytics capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Analytics	observed [1]	Discord	72.1 exemplar	41.8 agent-ready	verified
PostHog	observed [1]	Element / Matrix (Synapse)	57.7 strong	57.3 agent-ready	verified

Base Map Tiles 1 providers · AE-120.20.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Maps	observed [1]	Signal	49.7 developing	24.5 agent-aware	verified

Digital & Mobile Wallets 1 providers · AE-140.30.20 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Pay	observed [1]	Signal	49.8 developing	24.7 agent-aware	none found

End-User Computing Management 1 providers · BC-600.50.50 · Turbo EA

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Microsoft Intune	observed [1]	Mattermost	32.6 thin	24.6 agent-aware	none found

Feature Flag Management 1 providers · BC-4210.50 · Turbo EA

Feature Flag Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Split (Harness FME)	observed [1]	Mattermost	36.5 thin	26.4 agent-aware	none found

In-App Purchases & App Store Billing 1 providers · AE-904 · API Evangelist extension

In-App Purchases & App Store Billing capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google Play Billing	observed [1]	Signal	31.6 thin	24.6 agent-aware	none found

Mobile Attribution & Deep Linking 1 providers · AE-902 · API Evangelist extension

Mobile Attribution & Deep Linking capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
AppsFlyer	observed [1]	Discord	69.8 exemplar	46.4 agent-ready	verified

Social & Federated Login 1 providers · AE-160.10.30 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Google ID / Credential Manager	observed [1]	Signal	36.8 thin	19.6 agent-aware	none found

Subscription Billing & Revenue Management 1 providers · BC-4250 · Turbo EA

Subscription Billing & Revenue Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
AWS Marketplace metering	observed [1]	Mattermost	26.0 emerging	19.4 agent-aware	none found

agent layer 1 capabilities

Hosted LLM Inference 9 providers · AE-110.10.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
OpenAI	observed [1] [2]	Mattermost, Zulip	83.0 exemplar	58.4 agent-native	verified
Anthropic	observed [1]	Mattermost	89.0 exemplar	47.6 agent-ready	verified
Scale AI	observed [1]	Mattermost	69.8 exemplar	40.6 agent-native	none found
Google Gemini	observed [1]	Mattermost	55.1 strong	31.3 agent-ready	none found
Amazon Bedrock	observed [1]	Mattermost	50.3 developing	35.8 agent-ready	verified
Google Vertex AI	observed [1]	Mattermost	48.4 developing	24.6 agent-aware	verified
Mistral AI	observed [1]	Mattermost	47.7 developing	28.8 agent-ready	none found
Azure OpenAI	observed [1]	Mattermost	43.0 developing	23.4 agent-aware	verified
Cohere	observed [1]	Mattermost	37.5 thin	41.4 agent-ready	none found

Reference apps

Mattermost self-hosted

https://github.com/mattermost/mattermost

18 observed · 7 declared

observed ships the Amazon Bedrock SDK or integration code source
observed ships the Anthropic SDK or integration code source
observed ships the AWS Marketplace metering SDK or integration code source
observed ships the Azure Blob Storage SDK or integration code source
observed ships the Azure OpenAI SDK or integration code source
observed ships the Cohere SDK or integration code source
observed ships the GitLab SDK or integration code source
observed ships the Google AdMob SDK or integration code source
observed ships the Google Gemini SDK or integration code source
observed ships the Google SSO SDK or integration code source
observed ships the Google Vertex AI SDK or integration code source
observed ships the Microsoft Intune SDK or integration code source
observed ships the Mistral AI SDK or integration code source
observed ships the Office 365 / Entra ID SSO SDK or integration code source
observed ships the OpenAI SDK or integration code source
observed ships the Scale AI SDK or integration code source
observed ships the Sentry SDK or integration code source
observed ships the Split (Harness FME) SDK or integration code source
declared lists GitHub as an integration source
declared lists Jira as an integration source
declared lists Microsoft Calendar / Outlook as an integration source
declared lists Microsoft Teams as an integration source
declared lists Pexip as an integration source
declared lists Splunk as an integration source
declared lists Zoom as an integration source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), dependency manifest, integrations page, source code, source code, source code

Rocket.Chat self-hosted

https://github.com/RocketChat/Rocket.Chat

11 observed · 0 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the Apple (APNs, Sign in with Apple) SDK or integration code source
observed ships the Bugsnag SDK or integration code source
observed ships the Firebase (Crashlytics, Analytics) SDK or integration code source
observed ships the GitHub SDK or integration code source
observed ships the Google Cloud Storage SDK or integration code source
observed ships the Google sign-in SDK or integration code source
observed ships the LiveKit SDK or integration code source
observed ships the Slack SDK or integration code source
observed ships the Twilio SDK or integration code source
observed ships the X (Twitter) SDK or integration code source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), dependency manifest, source code

Zulip open-source-saas

https://github.com/zulip/zulip

11 observed · 0 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the Apple (APNs, Sign in with Apple) SDK or integration code source
observed ships the Azure AD SDK or integration code source
observed ships the Discord SDK or integration code source
observed ships the Firebase Cloud Messaging SDK or integration code source
observed ships the GitHub SDK or integration code source
observed ships the GitLab SDK or integration code source
observed ships the Google sign-in SDK or integration code source
observed ships the OpenAI SDK or integration code source
observed ships the Sentry SDK or integration code source
observed ships the Stripe SDK or integration code source

Read from: dependency manifest, source code

Element / Matrix (Synapse) self-hosted

https://github.com/element-hq/element-web

4 observed · 0 declared

observed ships the Google AdMob SDK or integration code source
observed ships the Jitsi SDK or integration code source
observed ships the PostHog SDK or integration code source
observed ships the Sentry SDK or integration code source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), dependency manifest, dependency manifest, source code

Signal open-source-saas

https://github.com/signalapp/Signal-Android

7 observed · 0 declared

observed ships the Firebase Cloud Messaging SDK or integration code source
observed ships the Google ID / Credential Manager SDK or integration code source
observed ships the Google Maps SDK or integration code source
observed ships the Google Pay SDK or integration code source
observed ships the Google Play Billing SDK or integration code source
observed ships the MobileCoin SDK or integration code source
observed ships the Stripe SDK or integration code source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), dependency manifest, source code

Slack commercial

https://slack.com/

1 observed · 23 declared

observed ships the Sentry SDK or integration code source
declared lists Asana as an integration source
declared lists AWS Chatbot as an integration source
declared lists Box as an integration source
declared lists ChatGPT / Codex as an integration source
declared lists Claude as an integration source
declared lists Dropbox as an integration source
declared lists Freshdesk as an integration source
declared lists GitHub as an integration source
declared lists GitLab as an integration source
declared lists Google Drive as an integration source
declared lists Google Sheets as an integration source
declared lists Highspot as an integration source
declared lists HubSpot as an integration source
declared lists Jira as an integration source
declared lists Miro as an integration source
declared lists Notion as an integration source
declared lists PagerDuty as an integration source
declared lists Salesforce Sales Cloud as an integration source
declared lists Salesforce Service Cloud as an integration source
declared lists Writer as an integration source
declared lists Zendesk as an integration source
declared lists Zoom as an integration source
declared lists ZoomInfo as an integration source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), integrations page

Discord commercial

https://discord.com/

3 observed · 20 declared

observed ships the AppsFlyer SDK or integration code source
observed ships the Google Analytics SDK or integration code source
observed ships the Sentry SDK or integration code source
declared lists Amazon Music as an integration source
declared lists Bluesky as an integration source
declared lists Bungie.net as an integration source
declared lists Crunchyroll as an integration source
declared lists eBay as an integration source
declared lists Epic Games as an integration source
declared lists Facebook as an integration source
declared lists GitHub as an integration source
declared lists Mastodon as an integration source
declared lists PayPal as an integration source
declared lists PlayStation Network as an integration source
declared lists Reddit as an integration source
declared lists Roblox as an integration source
declared lists Spotify as an integration source
declared lists Steam as an integration source
declared lists TikTok as an integration source
declared lists Twitch as an integration source
declared lists X (Twitter) as an integration source
declared lists Xbox as an integration source
declared lists YouTube as an integration source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), documentation

What these apps expose to agents

Mattermost: Mattermost Agents plugin: BYO-LLM across 11 service types, plus its own mcp/ and mcpserver/ packages observed source
Slack: Slack runs an MCP Registry for Slackbot and hosts third-party agents (Claude, ChatGPT, Agentforce, Writer) declared source
Zulip: openai SDK in core dependencies (AI features) observed source

Where these apps are listed

apple-app-store: Social Networking
apple-app-store: Business
google-play: Communication
awesome-selfhosted: Communication - Custom Communication Systems
awesome-selfhosted: Communication - XMPP - Servers
slack-marketplace: Communication
zapier: Team Chat