Spaces vs Kustomer
Kustomer is a customer service platform and CRM for high-volume teams: chat, email, SMS, voice, Slack, forms, Facebook, Instagram, WhatsApp Business and TikTok Shop, with its own AI agents, routing, SLAs, reporting — and a read-only MCP server. Spaces is messaging infrastructure for AI agents: one REST API and one MCP server that let the agent you already use — in Claude, Grok, ChatGPT, Cursor or your own code — read and answer conversations on Instagram, WhatsApp, LinkedIn and Messenger.
In one line: Kustomer is an enterprise service CRM for teams of people and its own AI; Spaces is the connection your own agent uses to answer chats. Spaces is not a help desk.
| Spaces | Kustomer | |
|---|---|---|
| What it is | Messaging API + MCP server for AI agents | Customer service platform and CRM with AI agents, for high-volume teams |
| Channels | Instagram, WhatsApp, LinkedIn and Messenger (inbox). TikTok posts and comments are live — no TikTok DM inbox. Facebook Pages coming soon. | Chat, email, SMS, voice, Slack and online forms; Facebook (50 pages), Instagram (50 accounts), WhatsApp Business (5 accounts), TikTok Shop. LinkedIn is not listed. |
| The number you already use, linked by QR code, and it keeps working on your phone. No Meta approval, no templates and no Meta message fees. | WhatsApp Business API, billed pay as you go. Kustomer's integration page says you need Business API approval and a Twilio or MessageBird WhatsApp account (this page may be out of date). | |
| AI | No built-in agent: bring your own. Routines for new messages, keywords and no-reply follow-ups. | Kustomer's own AI agents and assistants; an MCP client lets Kustomer AI call other MCP tools |
| MCP | https://api.spacesos.com/mcp, every plan including Free — reads and sends | https://server.mcp.kustomerapp.com/mcp, hosted, sign-in per user — read-only: tools "never create, change or delete" |
| API | REST API on every plan, including Free | REST API and webhooks |
| Price | Free: $0, 1 account, 50 actions a day, no card. Pay as you go: $9 per connected account a month, with 1,000 actions a month per account (pooled), then $5 per 1,000 (less at high volume). Reading messages is always free. No seats, no yearly option. | Not published — "we don't post one-size-fits-all pricing"; a quote after an assessment. Voice, SMS and WhatsApp billed pay as you go. |
| 5 chat accounts | $45 a month (5 × $9, 5,000 actions pooled) + your model costs | Not published — no estimate |
Example assumes five chat accounts — say one WhatsApp number, two Instagram profiles, one Facebook account for Messenger and one LinkedIn profile. Kustomer publishes no price, so we don't estimate one. This is not like-for-like: Kustomer is a full service platform — CRM, routing, SLAs, voice, reporting, knowledge base and its own AI — for teams of human agents. Spaces' price does not include the cost of the AI model your agent runs on. Prices exclude tax.
Choose Kustomer if
- You run a large customer service team and want CRM, routing, SLAs and AI agents in one platform.
- You need voice, email, Slack or TikTok Shop alongside chat.
- You want a vendor to assess your setup and tailor a price.
- A read-only MCP for looking things up is enough for your AI tools.
Choose Spaces if
- Your own agent should send replies, not only read — Spaces' MCP does both.
- You need LinkedIn conversations — Kustomer does not list LinkedIn.
- You want a published price per connected account and a Free plan with no card.
- You want to link an existing WhatsApp number by QR code.
About how WhatsApp connects
Kustomer connects WhatsApp through the Business API, billed pay as you go. Its integration page says you need Business API approval and a Twilio or MessageBird WhatsApp account; check with Kustomer for the current setup.
Spaces does not use the Business API. It links the number you already use by QR code, and it keeps working on your phone. For up to 24 hours after a WhatsApp account connects or reconnects, Spaces starts no new chats; replies in existing chats still go out. Other channels have no reply-only window: warm-up limits apply from the first day, and replies to people who wrote in go out immediately. New accounts then warm up over four weeks. That number stays under WhatsApp's own automation rules: Spaces keeps every account inside limits, which lowers the risk without removing it. For large template broadcasts, the official platform is the right tool. Sending limits · How Spaces keeps accounts safe · WhatsApp Business Platform vs QR code
Looking at other options too? See the best Kustomer alternatives.
Facts about Kustomer were checked on 11 November 2026 from Kustomer pricing, Kustomer MCP server, Kustomer omnichannel and Kustomer WhatsApp integration. Spaces facts are from spacesos.com/pricing, WhatsApp API, safety and llms.txt. Prices and features change; their sites have the current version. Kustomer is a trademark of its owner.