MCP Servers for SMB Operators

Exposes the full Twilio API surface as MCP tools.

Use caseSend appointment-reminder SMS from a SeldonFrame booking automation and route inbound replies into a CRM contact thread.

Transport

stdio

Auth

API key (TWILIO_ACCOUNT_SID + TWILIO_API_KEY:TWILIO_API_SECRET)

NotePublished as @twilio-alpha/mcp on npm — still labelled alpha. Use --services/--tags filters to keep tool surface manageable.

Send transactional and broadcast emails via Resend.

Use caseTrigger order-confirmation, lead-followup, and onboarding emails from automation steps without standing up your own SMTP.

Transport

stdio + http

Auth

API key (RESEND_API_KEY)

Hosted Slack MCP — search, post, manage canvases and users.

Use casePost a notification to #new-leads and DM the deal owner the moment SeldonFrame's CRM marks a deal as Won.

Transport

http

Auth

OAuth 2.0 (confidential client)

NoteHosted by Slack at mcp.slack.com — workspace admin must approve the app.

Discord bot operations — channels, messages, forums, webhooks.

Use caseRun a paid-course community and let SeldonFrame post drip-content announcements or auto-reply to common member questions.

Transport

stdio + http

Auth

Bot token (DISCORD_TOKEN)

NoteNo first-party Discord MCP exists. Requires creating a Discord app + bot with the right intents.

Hosted HubSpot MCP with read/write access to CRM records.

Use caseSync a SeldonFrame intake-form submission into HubSpot as a contact + deal, then let the brain draft the follow-up email.

Transport

http

Auth

OAuth 2.0 (moving to 2.1 with PKCE)

NotePublic beta. Two distinct servers exist — this is the CRM one (separate Developer Platform MCP also exists).

Official Salesforce MCP for org metadata, SOQL/Apex, and dev workflows.

Use caseQuery open opportunities by SOQL and push SeldonFrame's next-best-action recommendations back as Tasks on the rep's queue.

Transport

stdio

Auth

Salesforce CLI org auth (`sf org login web`)

NoteCLI-server is dev-tooling-flavoured. Salesforce's Hosted MCP Servers offering (currently beta, GA targeted Feb 2026) is cleaner for non-technical SMBs.

Comprehensive MCP for Attio — People, Companies, Deals, Lists, Tasks, Notes.

Use caseEnrich a new Attio Person with web context, log a call note, and add the deal to a 'Q2 pipeline' list automatically.

Transport

stdio

Auth

API key (ATTIO_API_KEY) or OAuth (ATTIO_ACCESS_TOKEN)

NoteNo first-party MCP yet. kesslerio's wrapper exposes 35 tools with proper safety annotations.

Gmail, Drive, Calendar, Docs, Sheets, Slides, Tasks via one MCP.

Use caseDraft Gmail replies to inbound leads, drop signed contracts into Drive, and book the kickoff onto the owner's Calendar.

Transport

stdio + http

Auth

Google OAuth 2.0 (your own client credentials)

NoteMost feature-complete option — Google has not shipped a first-party MCP. MIT-licensed, multi-user OAuth.

Read and write Notion docs, wikis, and data sources.

Use caseSync deal notes from your CRM into the team's Notion ops wiki, or pull SOPs into agent context for support tickets.

Transport

stdio + http

Auth

Integration token (NOTION_TOKEN) or OAuth (remote)

Notev2 migrated databases → 'data sources' (2025-09-03 API). Hosted remote at mcp.notion.com.

Find, create, and update Linear issues, projects, and comments.

Use caseWhen a SeldonFrame intake form captures a bug from a paying customer, file it as a Linear issue with the customer's plan tier attached.

Transport

http

Auth

OAuth 2.1 with dynamic client registration

NoteHosted-only. Add via `claude mcp add --transport http linear-server https://mcp.linear.app/mcp`.

Inspect schemas and read/write records across Airtable bases.

Use casePull live inventory or property availability from a customer's Airtable into a generated quote — without leaving chat.

Transport

stdio + http

Auth

Personal access token (AIRTABLE_API_KEY)

NoteNo first-party MCP. domdomegg's is the de-facto standard (440+ stars, MIT, actively versioned).

Charge customers, manage subscriptions, and search Stripe docs.

Use caseCharge a deposit when a deal moves to 'won', then auto-create the recurring subscription and reconcile its status onto the contact.

Transport

stdio + http

Auth

Restricted API key (STRIPE_SECRET_KEY, prefer rk_*) or OAuth (remote)

NoteUse restricted keys, not your live secret. Remote MCP at mcp.stripe.com.

143 tools covering 29 QBO entities and 11 financial reports.

Use caseAfter a Stripe payment lands, post the matching invoice into QuickBooks and pull a P&L snapshot when the owner asks 'how was March?'

Transport

stdio

Auth

OAuth 2.0 (CLIENT_ID/SECRET/REFRESH_TOKEN/REALM_ID)

NoteIntuit early-preview (Oct 2025). Few commits, no tagged release. US-only QBO. Pilots only — not production.

Auto-generated MCP wrapper over Square's REST APIs (POS, payments, catalog).

Use caseA retail SMB pushes a new product into the Square catalog and pulls yesterday's POS totals into a daily ops digest.

Transport

stdio + sse

Auth

Access token (local) or OAuth (remote)

NoteOfficially published by Square but explicitly Beta and slow-moving (last release April 2025). Use the remote OAuth endpoint in production.

Schedule and manage social posts via Postiz API.

Use caseSchedule weekly recap posts across X, LinkedIn, and Instagram from a single workflow without leaving chat.

Transport

stdio

Auth

API key (POSTIZ_API_KEY)

NotePostiz itself is open-source but has no first-party MCP yet. antoniolg's wrapper is the most complete community option.

53 tools for Mailchimp audiences, campaigns, automations.

Use casePull last campaign's open/click rates and draft a follow-up to non-openers without opening the Mailchimp dashboard.

Transport

stdio

Auth

API key (MAILCHIMP_API_KEY in `<key>-<dc>` format)

NoteNo official Mailchimp MCP. damientilman has the broadest tool coverage; AgentX-ai/mailchimp-mcp is read-only if write access is a concern.

Google's official MCP server for the Google Ads API.

Use caseAsk 'which campaigns blew their budget last week and what was their CPA?' before the Monday team sync.

Transport

stdio

Auth

OAuth 2.0 via google-ads.yaml

NoteRead-only by design (no bid edits, pause, or asset creation). Marked 'experimental, unsupported' by Google despite being maintained by them.

Manage Meta ads across Facebook, Instagram, and Audience Network.

Use casePause underperforming Instagram ad sets and reallocate budget to top-CTR creatives mid-week without logging into Ads Manager.

Transport

stdio + http

Auth

OAuth via Pipeboard or direct Meta token

Note819 stars, 137 releases — most mature option. For organic Instagram (not ads), pair with jlbadano/ig-mcp.

Google's official GA4 MCP for reports and admin.

Use caseAsk 'top 5 landing pages for organic traffic last 30 days, and where did conversions drop off?' without building a dashboard.

Transport

stdio

Auth

OAuth 2.0 (analytics.readonly scope)

NoteRead-only. Requires Python 3.10+ and a GCP project for the OAuth client.

Query Amplitude charts, dashboards, cohorts, and experiments.

Use caseAsk 'which onboarding step has the highest drop-off this month, and which user cohort is affected?' without owning a data team.

Transport

http

Auth

OAuth 2.0 (respects existing Amplitude permissions)

NoteHosted at mcp.amplitude.com/mcp (US) or mcp.eu.amplitude.com/mcp (EU). Read + write (chart/cohort creation).

Query Mixpanel events, funnels, retention, replays.

Use caseAsk 'show me the funnel from signup to first paid action for users from last week's LinkedIn campaign' in plain English.

Transport

http

Auth

OAuth 2.0 with PKCE (S256), dynamic client registration

NoteThree regional endpoints (US, EU, IN). For event ingestion (writing tracking events), use community dragonkhoi/mixpanel-mcp.

Manage repos, issues, PRs, and code search via the GitHub API.

Use caseAuto-file customer-reported bugs from a SeldonFrame intake form into the right GitHub repo and assign the on-call engineer.

Transport

stdio + http

Auth

OAuth (remote) or Personal Access Token (local)

NoteCo-developed by GitHub and Anthropic; rewritten in Go. Use scoped PATs.

Manage Vercel projects, deployments, and logs from an AI client.

Use casePromote a customer-portal preview deploy to production after a sales rep approves the new copy in chat.

Transport

http

Auth

OAuth 2.1 (per latest MCP authorization spec)

NoteHosted at mcp.vercel.com. Only Vercel-approved AI clients can connect (Claude, ChatGPT, Cursor, Codex).

Manage Supabase projects, schemas, SQL queries, and config.

Use caseSpin up a dev branch off the production DB to safely test a new pricing-table migration before merging.

Transport

stdio + http

Auth

OAuth 2.1 via dynamic client registration

NoteMaintained by Supabase. Docs strongly advise pointing at a dev project, not production.

Create projects, branches, run SQL, and migrate Postgres schemas.

Use caseBranch the customer database per agent test, run a destructive automation, then drop the branch — no impact on prod.

Transport

stdio + http

Auth

OAuth (remote) or API key (local)

NoteHosted at mcp.neon.tech/mcp. Vendor recommends local-dev/IDE only.

Geocode addresses, search places, compute distance and routes.

Use caseGeocode an inbound HVAC service request and route the nearest available technician based on travel time, not straight-line distance.

Transport

stdio

Auth

Google Maps API key (Places API New + Routes API enabled)

NoteAnthropic's reference MCP for Google Maps was archived in May 2025. cablate's community fork is the most-cited replacement.

Current weather, forecasts, and air quality via OpenWeatherMap.

Use caseTrigger an automation that texts HVAC customers a heat-advisory pre-check the morning before a forecast 95°F+ day.

Transport

stdio

Auth

OpenWeatherMap API key

NoteFor US-only outdoor services, the National Weather Service quickstart server is free and key-less.

Schedule meetings, manage event types, invitees, and reminders.

Use caseWhen a deal hits 'qualified', auto-send the customer a Calendly link for the right rep's discovery-call event type.

Transport

http

Auth

OAuth 2.1 + PKCE with Dynamic Client Registration (RFC 7591)

NoteHosted at mcp.calendly.com. No self-host or local mode.

Open-source booking — manage events, schedules, team availability.

Use caseConfirm a salon booking and reschedule it across two stylists' shared availability — without proprietary lock-in.

Transport

stdio + http

Auth

OAuth 2.1 (hosted) or API key (local)

Note34 tools across the Cal.com Platform API v2. Hosted at mcp.cal.com/mcp.