{"category":{"id":"communication-email-chat","name":"Email, team chat and notifications","description":"Send and receive email, post to team chat (Slack, Discord), send push notifications; manage meetings."},"entries":[ {"id":"agentmail","name":"AgentMail","homepage":"https://www.agentmail.to","docs":"https://docs.agentmail.to","auth":"api_key","auth_hint":"Authorization: Bearer ","mcp":{"type":"official","url":"https://mcp.agentmail.to/mcp","maintainer":"vendor","remote_url":"https://mcp.agentmail.to/mcp","repo":"https://github.com/agentmail-to/agentmail-mcp","covers_full_api":true,"source_url":"https://docs.agentmail.to/integrations/mcp","checked_at":"2026-09-24","domain_verified":true,"kind":"vendor-hosted","config":{"transport":"streamable-http","url":"https://mcp.agentmail.to/mcp","headers":{"x-api-key":"$AGENTMAIL_API_KEY"},"oauth":true,"docs_only":false,"source_url":"https://docs.agentmail.to/integrations/mcp","checked_at":"2026-09-24"}},"free_tier":"Free: 3 inboxes, 3,000 emails/month (max 100/day), 3GB storage, no card required","sdk":["python","typescript"],"openapi":null,"llms_txt":null,"desc_en":"Programmatically create inboxes and send/receive email autonomously, purpose-built for AI agents.","notes":"Newer, smaller vendor than legacy ESPs; markets itself specifically as agent-native email infra with a built-in MCP server.","verified":"2026-09-24","free_plan":{"kind":"free_tier","requires_card":false,"quota":"3 inboxes, 3,000 emails/month (max 100/day), 3 GB storage","period":"month","source_url":"https://www.agentmail.to/pricing","checked_at":"2026-09-24"},"auth_scheme":{"type":"http","scheme":"bearer","format":"Authorization: Bearer ","source_url":"https://docs.agentmail.to/api-reference/inboxes/list.md","checked_at":"2026-09-24"},"base_url":"https://api.agentmail.to/v0","rate_limits":{"summary":"Per-organization API limits (unpublished); 429 with Retry-After on excess. Free plan capped at 100 emails/day","source_url":"https://docs.agentmail.to/knowledge-base/rate-limits.md","checked_at":"2026-09-24"},"operations":["email-send","email-inbox"],"no_auth":false,"call":{"operation":"send an email from an inbox","method":"POST","url":"https://api.agentmail.to/v0/inboxes/{inbox_id}/messages/send","example":"curl -X POST https://api.agentmail.to/v0/inboxes/$INBOX_ID/messages/send -H \"Authorization: Bearer $AGENTMAIL_API_KEY\" -H \"Content-Type: application/json\" -d '{\"to\":\"recipient@example.com\",\"subject\":\"Hello\",\"text\":\"Body\"}'","response_fields":["message_id","thread_id"],"async":null,"source_url":"https://docs.agentmail.to/api-reference/inboxes/messages/send.md","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok","mcp":"ok"},"uptime":{"window_days":30,"api":{"url":"https://api.agentmail.to/v0","probes":1,"up":1,"median_ms":209,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":404}},"mcp_remote":{"url":"https://mcp.agentmail.to/mcp","probes":1,"up":1,"median_ms":472,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":401}}}}, {"id":"discord-api","name":"Discord API","homepage":"https://discord.com/developers/docs","docs":"https://docs.discord.com/developers/intro","auth":"api_key+oauth2","auth_hint":"Authorization: Bot (OAuth2 Bearer only for user-authorized access and adding the bot to servers)","mcp":{"type":"community","url":"https://github.com/SaseQ/discord-mcp","maintainer":"community","repo":"https://github.com/SaseQ/discord-mcp","tools":["get_server_info","send_message","read_messages","edit_message","delete_message","send_private_message","add_reaction","create_text_channel","list_channels","find_channel"],"covers_full_api":false,"source_url":"https://github.com/SaseQ/discord-mcp","checked_at":"2026-09-24","domain_verified":null,"kind":"community","config":{"transport":"stdio","command":"docker","args":["run","--rm","-i","-e","DISCORD_TOKEN","-e","DISCORD_GUILD_ID","saseq/discord-mcp:latest"],"env":["DISCORD_TOKEN","DISCORD_GUILD_ID"],"docs_only":false,"source_url":"https://github.com/SaseQ/discord-mcp","checked_at":"2026-09-24"}},"free_tier":"free, no key needed beyond creating a bot application","sdk":["python","javascript","java"],"openapi":null,"llms_txt":"https://docs.discord.com/llms.txt","desc_en":"Send messages, manage channels/roles, and build interactive bots via REST and Gateway API.","notes":"Per-route rate limits; bots in 100+ servers require Discord verification/approval.","verified":"2026-09-24","free_plan":{"kind":"free_tier","requires_card":false,"source_url":"https://docs.discord.com/developers/reference","checked_at":"2026-09-24"},"auth_scheme":{"type":"apiKey","in":"header","name":"Authorization","format":"Authorization: Bot ","source_url":"https://docs.discord.com/developers/reference","checked_at":"2026-09-24"},"base_url":"https://discord.com/api/v10","rate_limits":{"summary":"Global 50 requests/s per bot plus per-route limits; 10,000 invalid requests per 10 min triggers IP ban","source_url":"https://docs.discord.com/developers/topics/rate-limits","checked_at":"2026-09-24"},"oauth_scopes":{"scopes":["bot","applications.commands"],"source_url":"https://docs.discord.com/developers/topics/oauth2","checked_at":"2026-09-24"},"operations":["team-chat"],"no_auth":false,"call":{"operation":"send a message to a channel","method":"POST","url":"https://discord.com/api/v10/channels/{channel.id}/messages","example":"curl -X POST https://discord.com/api/v10/channels/$CHANNEL_ID/messages -H \"Authorization: Bot $DISCORD_BOT_TOKEN\" -H \"Content-Type: application/json\" -d '{\"content\":\"Hello\"}'","response_fields":["id","channel_id","content","timestamp"],"async":null,"source_url":"https://docs.discord.com/developers/resources/message#create-message","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok","mcp":"ok","llms_txt":"ok"},"ratings":[{"source":"github","repo":"SaseQ/discord-mcp","stars":507,"forks":104,"pushed_at":"2026-04-25","archived":false,"url":"https://github.com/SaseQ/discord-mcp","fetched_at":"2026-09-24T16:54Z"},{"source":"smithery","uses":82,"url":"https://smithery.ai/servers/discord","fetched_at":"2026-09-24T16:54Z"}],"uptime":{"window_days":30,"api":{"url":"https://discord.com/api/v10","probes":1,"up":1,"median_ms":166,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":403}}}}, {"id":"mailgun","name":"Mailgun","homepage":"https://www.mailgun.com","docs":"https://documentation.mailgun.com/docs/mailgun/api-reference/intro/","auth":"api_key","auth_hint":"Basic auth: api:","mcp":{"type":"official","url":"https://github.com/mailgun/mailgun-mcp-server","maintainer":"vendor","repo":"https://github.com/mailgun/mailgun-mcp-server","covers_full_api":false,"source_url":"https://documentation.mailgun.com/docs/mailgun/mcp","checked_at":"2026-09-24","domain_verified":null,"kind":"official","config":{"transport":"stdio","command":"npx","args":["-y","@mailgun/mcp-server"],"env":["MAILGUN_API_KEY"],"docs_only":false,"source_url":"https://github.com/mailgun/mailgun-mcp-server#configuration","checked_at":"2026-09-24"}},"free_tier":"free: 100 emails/day; 30-day free trial on paid tiers","sdk":["node","python","php","ruby","java","csharp","go"],"openapi":null,"llms_txt":null,"desc_en":"Send and validate transactional email via REST API and SMTP relay with webhooks.","notes":"Free plan limited to 1 sending domain and 1-day log retention. Official MCP server is local only (npx @mailgun/mcp-server, stdio).","verified":"2026-09-24","free_plan":{"kind":"free_tier","quota":"100 emails/day, 1 custom sending domain, 1-day log retention","period":"day","source_url":"https://www.mailgun.com/pricing/","checked_at":"2026-09-24"},"auth_scheme":{"type":"http","scheme":"basic","format":"Authorization: Basic base64(api:)","source_url":"https://documentation.mailgun.com/docs/mailgun/api-reference/mg-auth","checked_at":"2026-09-24"},"base_url":"https://api.mailgun.net","rate_limits":{"summary":"Per-API time windows; X-RateLimit-* headers and 429 when exceeded. EU region host: api.eu.mailgun.net","source_url":"https://documentation.mailgun.com/docs/mailgun/api-reference/api-overview","checked_at":"2026-09-24"},"operations":["email-send"],"no_auth":false,"call":{"operation":"send an email","method":"POST","url":"https://api.mailgun.net/v3/{domain_name}/messages","example":"curl -X POST https://api.mailgun.net/v3/$MAILGUN_DOMAIN/messages -u \"api:$MAILGUN_API_KEY\" -F from=\"Sender \" -F to=user@example.com -F subject=Hello -F text=Testing","response_fields":["id","message"],"async":null,"source_url":"https://documentation.mailgun.com/docs/mailgun/api-reference/send/mailgun/messages/post-v3--domain-name--messages","checked_at":"2026-09-24"},"unit_price":{"summary":"Overage from $1.80 per 1,000 emails (Basic, $15/mo incl. 10,000) or from $1.30 per 1,000 (Foundation, $35/mo incl. 50,000)","source_url":"https://www.mailgun.com/pricing/","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":false,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok"},"ratings":[{"source":"sourceforge","rating":1.0,"reviews":1,"url":"https://sourceforge.net/software/product/Mailgun/","fetched_at":"2026-09-24T16:58Z"}],"uptime":{"window_days":30,"api":{"url":"https://api.mailgun.net","probes":1,"up":1,"median_ms":441,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":200}}},"reviews_url":"https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/catalog/reviews/mailgun.json"}, {"id":"ntfy","name":"ntfy.sh Push Notifications API","homepage":"https://ntfy.sh","docs":"https://docs.ntfy.sh/publish/","auth":"none","auth_hint":"No key for public topics: POST the message body to https://ntfy.sh/. Optional access token for reserved topics: 'Authorization: Bearer tk_'","mcp":{"type":"community","url":"https://github.com/gitmotion/ntfy-me-mcp","maintainer":"community","repo":"https://github.com/gitmotion/ntfy-me-mcp","tools":["ntfy_me","ntfy_me_fetch"],"covers_full_api":false,"source_url":"https://github.com/gitmotion/ntfy-me-mcp","checked_at":"2026-09-24","domain_verified":null,"kind":"community","config":{"transport":"stdio","command":"npx","args":["-y","ntfy-me-mcp"],"env":["NTFY_TOPIC","NTFY_URL","NTFY_TOKEN"],"docs_only":false,"source_url":"https://github.com/gitmotion/ntfy-me-mcp","checked_at":"2026-09-24"}},"free_tier":"No key; anonymous publishing to public topics, rate-limited per visitor IP (burst of 60 requests, then 1 request every 5 s, roughly 17,280/day); paid plans from $6/month add reserved topics, higher limits, email and phone-call notifications.","sdk":[],"openapi":null,"llms_txt":null,"desc_en":"Lets an agent send push notifications to a user's phone or desktop by publishing a plain HTTP POST to an ntfy topic, and read messages back from it.","notes":"Public topic names act as passwords; anyone who knows the name can read or post, so use a hard-to-guess name or a reserved topic. Attachments up to 15 MB. Server is open source and self-hostable with the same API.","verified":"2026-09-24","free_plan":{"kind":"no_key","requires_card":false,"quota":"Burst of 60 requests, then 1 request every 5 s per visitor","source_url":"https://docs.ntfy.sh/config/","checked_at":"2026-09-24"},"auth_scheme":{"type":"none","format":"No auth for public topics; optional Authorization: Bearer tk_ for protected topics","source_url":"https://docs.ntfy.sh/publish/","checked_at":"2026-09-24"},"base_url":"https://ntfy.sh","rate_limits":{"summary":"Defaults: burst 60 requests, replenish 1 request/5 s; attachments 100 MB total, 500 MB/day bandwidth per visitor","source_url":"https://docs.ntfy.sh/config/","checked_at":"2026-09-24"},"operations":["push-notification"],"no_auth":true,"call":{"operation":"publish a push notification to a topic","method":"POST","url":"https://ntfy.sh/{topic}","example":"curl -H \"Title: Build finished\" -H \"Priority: high\" -d \"Backup successful\" https://ntfy.sh/$NTFY_TOPIC","response_fields":["id","time","event","topic","message"],"async":null,"source_url":"https://docs.ntfy.sh/publish/","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"uptime":{"window_days":30,"api":{"url":"https://ntfy.sh","probes":1,"up":1,"median_ms":397,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":200}}}}, {"id":"postmark","name":"Postmark","homepage":"https://postmarkapp.com","docs":"https://postmarkapp.com/developer/api/overview","auth":"api_key","auth_hint":"X-Postmark-Server-Token: ","mcp":{"type":"official","url":"https://github.com/ActiveCampaign/postmark-mcp","maintainer":"vendor","repo":"https://github.com/ActiveCampaign/postmark-mcp","tools":["sendEmail","sendEmailWithTemplate","sendBatch","sendBatchWithTemplate","listTemplates","getTemplate","createTemplate","editTemplate","deleteTemplate","validateTemplate","searchOutboundMessages","getMessageDetails","diagnoseDelivery","searchBounces","getBounceDump","activateBounce","listSuppressions","createSuppressions","deleteSuppressions","getDeliveryStats","getServerInfo","listWebhooks","createWebhook","deleteWebhook"],"covers_full_api":false,"source_url":"https://github.com/activecampaign/postmark-mcp","checked_at":"2026-09-24","domain_verified":null,"kind":"official","config":{"transport":"stdio","command":"npx","args":["-y","@activecampaign/postmark-mcp"],"env":["POSTMARK_SERVER_TOKEN","DEFAULT_SENDER_EMAIL","DEFAULT_MESSAGE_STREAM"],"docs_only":false,"source_url":"https://github.com/ActiveCampaign/postmark-mcp","checked_at":"2026-09-24"}},"free_tier":"free: 100 emails/month (Developer plan, no expiry)","sdk":["node","python","php","dotnet","ruby","go","java"],"openapi":null,"llms_txt":null,"desc_en":"Send transactional email via REST API with delivery tracking, bounce handling, and templates.","notes":"Strictly transactional-email focused; enforces anti-bulk/anti-spam policy which can suspend accounts sending bulk/marketing mail. Official MCP server is local (npx @activecampaign/postmark-mcp).","verified":"2026-09-24","free_plan":{"kind":"free_tier","requires_card":false,"quota":"100 emails/month (Developer plan, no expiry)","period":"month","source_url":"https://postmarkapp.com/pricing","checked_at":"2026-09-24"},"auth_scheme":{"type":"apiKey","in":"header","name":"X-Postmark-Server-Token","format":"X-Postmark-Server-Token: ","source_url":"https://postmarkapp.com/developer/api/overview","checked_at":"2026-09-24"},"base_url":"https://api.postmarkapp.com","rate_limits":{"summary":"Unpublished acceptable-use limit; HTTP 429 when exceeded","source_url":"https://postmarkapp.com/developer/api/overview","checked_at":"2026-09-24"},"operations":["email-send"],"no_auth":false,"call":{"operation":"send one email","method":"POST","url":"https://api.postmarkapp.com/email","example":"curl -X POST https://api.postmarkapp.com/email -H 'Accept: application/json' -H 'Content-Type: application/json' -H \"X-Postmark-Server-Token: $POSTMARK_SERVER_TOKEN\" -d '{\"From\":\"sender@example.com\",\"To\":\"receiver@example.com\",\"Subject\":\"Test\",\"TextBody\":\"Hello\",\"MessageStream\":\"outbound\"}'","response_fields":["MessageID","ErrorCode","SubmittedAt"],"async":null,"source_url":"https://postmarkapp.com/developer/user-guide/send-email-with-api","checked_at":"2026-09-24"},"unit_price":{"summary":"overage per 1,000 emails: $1.80 (Basic), $1.30 (Pro), $1.20 (Platform); plans from $15/mo for 10,000 emails","source_url":"https://postmarkapp.com/pricing","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok"},"uptime":{"window_days":30,"api":{"url":"https://api.postmarkapp.com","probes":1,"up":1,"median_ms":546,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":200}}}}, {"id":"resend","name":"Resend","homepage":"https://resend.com","docs":"https://resend.com/docs/api-reference/introduction","auth":"api_key","auth_hint":"Authorization: Bearer re_xxxxxxxxx","mcp":{"type":"official","url":"https://mcp.resend.com/mcp","maintainer":"vendor","remote_url":"https://mcp.resend.com/mcp","repo":"https://github.com/resend/resend-mcp","covers_full_api":true,"source_url":"https://resend.com/docs/mcp-server","checked_at":"2026-09-24","domain_verified":true,"kind":"vendor-hosted","config":{"transport":"streamable-http","url":"https://mcp.resend.com/mcp","headers":{"Authorization":"Bearer $RESEND_API_KEY"},"oauth":true,"env":[],"docs_only":false,"source_url":"https://resend.com/docs/mcp-server","checked_at":"2026-09-24"}},"free_tier":"free tier: 3,000 emails/mo, 100/day","sdk":["node","python","php","ruby","go","java"],"openapi":null,"llms_txt":null,"desc_en":"Send transactional and marketing email via REST API with templates, domains, and webhooks.","notes":"Official remote MCP server at mcp.resend.com/mcp; sandbox domain available for testing before custom domain verification.","verified":"2026-09-24","free_plan":{"kind":"free_tier","quota":"3,000 emails/month (max 100/day), 3 domains","period":"month","source_url":"https://resend.com/pricing","checked_at":"2026-09-24"},"auth_scheme":{"type":"http","scheme":"bearer","format":"Authorization: Bearer re_","source_url":"https://resend.com/docs/api-reference/introduction","checked_at":"2026-09-24"},"base_url":"https://api.resend.com","rate_limits":{"summary":"10 requests/s per team across all API keys","source_url":"https://resend.com/docs/api-reference/introduction","checked_at":"2026-09-24"},"operations":["email-send","email-marketing"],"no_auth":false,"call":{"operation":"send an email","method":"POST","url":"https://api.resend.com/emails","example":"curl -X POST 'https://api.resend.com/emails' -H \"Authorization: Bearer $RESEND_API_KEY\" -H 'Content-Type: application/json' -d '{\"from\":\"Acme \",\"to\":[\"delivered@resend.dev\"],\"subject\":\"hello world\",\"html\":\"

it works!

\"}'","response_fields":["id"],"async":null,"source_url":"https://resend.com/docs/api-reference/emails/send-email","checked_at":"2026-09-24"},"unit_price":{"summary":"Free: 3,000 emails/month (100/day); Pro $20/mo for 50,000 emails, then $0.90 per 1,000 extra emails","source_url":"https://resend.com/pricing","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":false,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok","mcp":"reachable"},"ratings":[{"source":"sourceforge","rating":4.0,"reviews":1,"url":"https://sourceforge.net/software/product/Resend/","fetched_at":"2026-09-24T16:58Z"}],"uptime":{"window_days":30,"api":{"url":"https://api.resend.com","probes":1,"up":1,"median_ms":177,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":200}},"mcp_remote":{"url":"https://mcp.resend.com/mcp","probes":1,"up":1,"median_ms":189,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":401}}},"reviews_url":"https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/catalog/reviews/resend.json"}, {"id":"sendgrid-twilio","name":"SendGrid (Twilio)","homepage":"https://sendgrid.com","docs":"https://www.twilio.com/docs/sendgrid/api-reference/how-to-use-the-sendgrid-v3-api/authentication","auth":"api_key","auth_hint":"Authorization: Bearer SG.xxxxxxxxx","mcp":{"type":"none","url":null,"maintainer":"community","repo":"https://github.com/Garoth/sendgrid-mcp","tools":["send_email","send_to_list","list_contacts","add_contact","list_contact_lists","create_template","list_templates","get_stats","validate_email","list_verified_senders"],"covers_full_api":false,"source_url":"https://github.com/Garoth/sendgrid-mcp","checked_at":"2026-09-24","domain_verified":null,"kind":"community","config":null},"free_tier":"Trial: 100 emails/day for 60 days, no card required; paid plan after","sdk":["python","node","java","csharp","php","ruby","go"],"openapi":null,"llms_txt":null,"desc_en":"Send transactional and marketing email via REST/SMTP API with templates and analytics.","notes":"Now a Twilio product; sender identity/domain authentication required before sending.","verified":"2026-09-24","free_plan":{"kind":"trial","requires_card":false,"quota":"100 emails/day for 60 days","period":"day","source_url":"https://www.twilio.com/en-us/products/email-api/pricing","checked_at":"2026-09-24"},"auth_scheme":{"type":"http","scheme":"bearer","format":"Authorization: Bearer ","source_url":"https://www.twilio.com/docs/sendgrid/api-reference/how-to-use-the-sendgrid-v3-api/authentication","checked_at":"2026-09-24"},"base_url":"https://api.sendgrid.com/v3","rate_limits":{"summary":"Per-endpoint limits reported in X-RateLimit-* headers; HTTP 429 when exceeded","source_url":"https://www.twilio.com/docs/sendgrid/api-reference/how-to-use-the-sendgrid-v3-api/rate-limits","checked_at":"2026-09-24"},"operations":["email-send","email-marketing"],"no_auth":false,"call":{"operation":"send an email","method":"POST","url":"https://api.sendgrid.com/v3/mail/send","example":"curl -X POST https://api.sendgrid.com/v3/mail/send -H \"Authorization: Bearer $SENDGRID_API_KEY\" -H \"Content-Type: application/json\" -d '{\"personalizations\":[{\"to\":[{\"email\":\"alex@example.com\"}]}],\"from\":{\"email\":\"orders@example.com\"},\"subject\":\"Hello\",\"content\":[{\"type\":\"text/plain\",\"value\":\"Hi\"}]}'","response_fields":["HTTP status 202 (empty body)","X-Message-Id response header"],"async":"202 means accepted for processing; delivery happens later (track via Event Webhook or Email Activity)","source_url":"https://www.twilio.com/docs/sendgrid/api-reference/mail-send/mail-send","checked_at":"2026-09-24"},"unit_price":{"summary":"Plans from $19.95/month (Essentials 50K emails); overage $0.0013 per email on 50K plan, $0.0009 on 100K plan, $0.0011-$0.0005 on Pro tiers","source_url":"https://www.twilio.com/en-us/products/email-api/pricing","checked_at":"2026-09-24"},"has_free_tier":false,"has_trial":true,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok"},"ratings":[{"source":"sourceforge","rating":3.9,"reviews":8,"url":"https://sourceforge.net/software/product/SendGrid/","fetched_at":"2026-09-24T16:58Z"}],"uptime":{"window_days":30,"api":{"url":"https://api.sendgrid.com/v3","probes":1,"up":1,"median_ms":130,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":401}}},"reviews_url":"https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/catalog/reviews/sendgrid-twilio.json"}, {"id":"slack-api","name":"Slack API","homepage":"https://api.slack.com","docs":"https://docs.slack.dev/reference/methods","auth":"oauth2","auth_hint":"Authorization: Bearer xoxb-...","mcp":{"type":"official","url":"https://mcp.slack.com/mcp","maintainer":"vendor","remote_url":"https://mcp.slack.com/mcp","covers_full_api":false,"source_url":"https://docs.slack.dev/ai/slack-mcp-server/","checked_at":"2026-09-24","domain_verified":true,"kind":"vendor-hosted","config":{"transport":"streamable-http","url":"https://mcp.slack.com/mcp","headers":null,"oauth":true,"env":[],"docs_only":false,"source_url":"https://docs.slack.dev/ai/slack-mcp-server/","checked_at":"2026-09-24"}},"free_tier":"free, no key needed beyond creating a Slack app/workspace","sdk":["python","node","java"],"openapi":null,"llms_txt":null,"desc_en":"Post messages, manage channels, and read conversation history in Slack via the Web API.","notes":"Requires creating a Slack app with OAuth scopes; per-method rate-limit tiers apply. The official remote MCP (OAuth 2.0) works only for directory-published or internal Slack apps, and in partner clients such as Claude.","verified":"2026-09-24","free_plan":{"kind":"free_tier","requires_card":false,"source_url":"https://docs.slack.dev/apis/web-api/rate-limits","checked_at":"2026-09-24"},"auth_scheme":{"type":"oauth2","format":"Authorization: Bearer xoxb-","source_url":"https://docs.slack.dev/reference/methods/chat.postMessage","checked_at":"2026-09-24"},"base_url":"https://slack.com/api","rate_limits":{"summary":"Per-method tiers: T1 1+/min, T2 20+/min, T3 50+/min, T4 100+/min; chat.postMessage ~1 msg/s per channel; non-Marketplace apps: conversations.history 1/min","source_url":"https://docs.slack.dev/apis/web-api/rate-limits","checked_at":"2026-09-24"},"oauth_scopes":{"scopes":["chat:write","channels:read","channels:history","groups:history","im:history"],"source_url":"https://docs.slack.dev/reference/methods/conversations.history","checked_at":"2026-09-24"},"operations":["team-chat"],"no_auth":false,"call":{"operation":"post a message to a channel","method":"POST","url":"https://slack.com/api/chat.postMessage","example":"curl -X POST https://slack.com/api/chat.postMessage -H \"Authorization: Bearer $SLACK_BOT_TOKEN\" -H \"Content-Type: application/json; charset=utf-8\" -d '{\"channel\":\"C0123456789\",\"text\":\"Hello\"}'","response_fields":["ok","channel","ts","message","error"],"async":null,"source_url":"https://docs.slack.dev/reference/methods/chat.postMessage","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok","mcp":"reachable"},"ratings":[{"source":"smithery","uses":12110,"url":"https://smithery.ai/servers/slack","fetched_at":"2026-09-24T16:54Z"},{"source":"sourceforge","rating":4.6,"reviews":250,"url":"https://sourceforge.net/software/product/Slack/","fetched_at":"2026-09-24T16:58Z"}],"uptime":{"window_days":30,"api":{"url":"https://slack.com/api","probes":1,"up":1,"median_ms":546,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":200}},"mcp_remote":{"url":"https://mcp.slack.com/mcp","probes":1,"up":1,"median_ms":164,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":401}}},"reviews_url":"https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/catalog/reviews/slack-api.json"}, {"id":"stream-getstream-chat-video-api","name":"Stream (GetStream) Chat & Video API","homepage":"https://getstream.io","docs":"https://getstream.io/chat/docs/","auth":"api_key","auth_hint":"API key + server-side secret used to mint short-lived user JWT tokens","mcp":{"type":"none","url":null,"domain_verified":null,"kind":"none","config":null},"free_tier":"Free tier: Build plan with 1,000 MAU/month and 100 concurrent connections, no card; Maker account gives $100/month credit for teams under 5 people and under $10k monthly revenue","sdk":["node","python","java","swift","kotlin"],"openapi":null,"llms_txt":null,"desc_en":"Build and moderate in-app chat and video with REST/SDK APIs, channels, and real-time messaging.","notes":"Client access requires server-minted short-lived user tokens; not a pure send-and-forget messaging API like email/SMS providers.","verified":"2026-09-24","free_plan":{"kind":"free_tier","requires_card":false,"quota":"Build plan: 1,000 MAU, 100 concurrent connections","period":"month","source_url":"https://getstream.io/chat/pricing/","checked_at":"2026-09-24"},"auth_scheme":{"type":"apiKey","in":"header","name":"Authorization","format":"?api_key= + Authorization: + Stream-Auth-Type: jwt","source_url":"https://getstream.io/chat/docs/node/tokens_and_authentication/","checked_at":"2026-09-24"},"rate_limits":{"summary":"Per-endpoint per-minute limits (60 to 10,000/min, e.g. Send Message 1,000/min) plus 60 requests/min per user","source_url":"https://getstream.io/chat/docs/node/rate_limits/","checked_at":"2026-09-24"},"operations":["chat-messaging"],"no_auth":false,"call":{"operation":"send a message to a channel (server-side)","method":"POST","url":"https://chat.stream-io-api.com/channels/{type}/{id}/message?api_key={API_KEY}","example":"curl -X POST \"https://chat.stream-io-api.com/channels/messaging/general/message?api_key=$STREAM_API_KEY\" -H 'Stream-Auth-Type: jwt' -H \"Authorization: $STREAM_SERVER_JWT\" -H 'Content-Type: application/json' -d '{\"message\": {\"text\": \"Hello World\", \"user\": {\"id\": \"user-1\"}}}'","response_fields":["message.id","message.text","message.created_at","duration"],"async":null,"source_url":"https://github.com/GetStream/protocol/blob/main/openapi/chat-openapi.json","checked_at":"2026-09-24"},"unit_price":{"summary":"Chat overage: $0.09 per MAU above plan limit, $0.99 per extra concurrent connection, $5.00 per 1M stored messages","source_url":"https://getstream.io/chat/pricing/","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok"}}, {"id":"zoom-api","name":"Zoom API","homepage":"https://developers.zoom.us","docs":"https://developers.zoom.us/docs/api/","auth":"oauth2","auth_hint":"Authorization: Bearer (Server-to-Server OAuth recommended for agents)","mcp":{"type":"official","url":"https://mcp.zoom.us/mcp/zoom/streamable","maintainer":"vendor","remote_url":"https://mcp.zoom.us/mcp/zoom/streamable","covers_full_api":false,"source_url":"https://github.com/zoom/mcp-registry","checked_at":"2026-09-24","domain_verified":true,"kind":"vendor-hosted","config":{"transport":"streamable-http","url":"https://mcp.zoom.us/mcp/zoom/streamable","headers":null,"oauth":true,"source_url":"https://github.com/zoom/mcp-registry","docs_only":false,"checked_at":"2026-09-24"}},"free_tier":"usable on free Zoom account within Basic plan limits; some endpoints require paid plan","sdk":["python","node","java","csharp"],"openapi":null,"llms_txt":null,"desc_en":"Schedule, update, and manage meetings, webinars, and cloud recordings programmatically via REST API.","notes":"Server-to-Server OAuth app type is the recommended path for unattended agent use; some features gated behind licensed/paid plans. Official remote MCP servers (streamable HTTP, user OAuth) run at the mcp.zoom.us gateway.","verified":"2026-09-24","free_plan":{"kind":"free_tier","requires_card":false,"quota":"Free plan API limits: light 4/s and 6,000/day, medium 2/s and 2,000/day, heavy 1/s and 1,000/day","period":"day","source_url":"https://developers.zoom.us/docs/api/rate-limits/","checked_at":"2026-09-24"},"auth_scheme":{"type":"oauth2","format":"Authorization: Bearer (Server-to-Server OAuth, grant_type=account_credentials at https://zoom.us/oauth/token, 1 h tokens)","source_url":"https://developers.zoom.us/docs/internal-apps/s2s-oauth/","checked_at":"2026-09-24"},"base_url":"https://api.zoom.us/v2","rate_limits":{"summary":"Per plan: Free light 4/s (6,000/day), Pro light 30/s, Business+ light 80/s; medium/heavy lower; 429 on excess","source_url":"https://developers.zoom.us/docs/api/rate-limits/","checked_at":"2026-09-24"},"operations":["video-conferencing","calendar"],"no_auth":false,"call":{"operation":"create a scheduled meeting","method":"POST","url":"https://api.zoom.us/v2/users/{userId}/meetings","example":"curl -X POST https://api.zoom.us/v2/users/me/meetings -H \"Authorization: Bearer $ZOOM_ACCESS_TOKEN\" -H \"Content-Type: application/json\" -d '{\"topic\":\"Planning\",\"type\":2,\"start_time\":\"2026-10-01T15:00:00Z\",\"duration\":30}'","response_fields":["id","join_url","start_url","password"],"async":null,"source_url":"https://developers.zoom.us/api-hub/meetings/methods/endpoints.json","checked_at":"2026-09-24"},"has_free_tier":true,"has_trial":false,"no_card":true,"stale":false,"link_check":{"checked_at":"2026-09-24","docs":"ok"},"uptime":{"window_days":30,"api":{"url":"https://api.zoom.us/v2","probes":1,"up":1,"median_ms":265,"last":{"at":"2026-09-24T18:26Z","up":true,"detail":404}}}} ]}