Kapso
Official WhatsApp API, inbox and workflows for developers and AI agents
What is Kapso?
Kapso is official WhatsApp API, inbox and workflows for developers and AI agents. ZeroCrew lists it after checking it works for a company with no employees.
Kapso is WhatsApp for developers: an official Meta Business Partner platform to connect numbers, send and receive messages, run templates and Flows, and ship webhooks without rebuilding Meta plumbing. You get a sandbox, managed or bring-your-own numbers, an inbox with human handoff, visual workflows, broadcasts and serverless functions. Coding agents can drive WhatsApp through Kapso's official MCP server, CLI and agent skills — read conversations, send replies, manage templates and configure webhooks after project sign-in. Open-source SDKs and examples live on GitHub; the hosted platform is the product.
Who it's for
Solo founders and product builders who need official WhatsApp in their app or agent stack without running Meta plumbing themselves.
By Kapso.
Is Kapso good for a one-person business?
Yes, one person can run Kapso: you sign up and start without a sales call, you can export your data, and your agents can use it through its MCP server. ZeroCrew checked this on Kapso's own site.
- Start alone
- Self-serve
- Sign up without a demo, says its site
- Can I leave
- Data export
- From its own site
- Connects with
- 18 apps
- WhatsApp, WhatsApp Business app, Slack, Gmail
Is Kapso good for startups?
Yes, founders use it: 5 solo or early-stage founders say they use Kapso. From 8 public posts by founders in the 12 months to November 9, 2026, read by ZeroCrew and checked by a second AI model.
- Show HN: Kapso – WhatsApp for developersHacker News
- Kapso: WhatsApp for developersReddit
- First client, stuck on WhatsApp coexistence signup (error 3441038). Anyone get past this with Kapso?Reddit
- What's your default for onboarding small business clients: coexistence on their own number, or a fresh number?Reddit
How big is Kapso?
157 websites link to Kapso, a domain rank of 170 out of 1,000. ZeroCrew checked the counts on November 9, 2026.
Websites linking and domain rank (0 to 1,000) from DataForSEO.
Kapso reviews
Founder reviews of Kapso are mostly positive, from 8 public posts ZeroCrew read and checked with a second AI model. Founders praise helpful documentation and sandbox, reliable everyday operation, and easy initial onboarding.
What people say elsewhere
Praised for
- Helpful documentation and sandbox
- Reliable everyday operation
- Easy initial onboarding
- Capable workflow-building agent
Complained about
- Meta coexistence onboarding failures
- Meta suspensions disrupt connections
- Unclear Facebook account requirement
- Agent struggles updating existing workflows
Summarized by AI from 8 public posts on Hacker News and Reddit, November 9, 2026. Not reviews from ZeroCrew founders.
- Show HN: Kapso – WhatsApp for developers Hacker News
- Kapso: WhatsApp for developers Reddit
- First client, stuck on WhatsApp coexistence signup (error 3441038). Anyone get past this with Kapso? Reddit
- What's your default for onboarding small business clients: coexistence on their own number, or a fresh number? Reddit
- Fresh number + Coexistence after error 3441038: can you sanity-check our plan? Reddit
- Coexistence signup fails with error 3441038 at the phone number step, even though the client owns the portfolio. Kapso users, how did you g… Reddit
What products are similar to Kapso?
Cloudflare, Vercel, and Supabase do the same job as Kapso (backend and hosting). ZeroCrew files every tool by the job it does.
Kapso MCP
Yes, Kapso has an MCP server, so Claude, ChatGPT, Cursor, and other agents can use Kapso for you; the setup steps for each are on its ZeroCrew MCP page. ZeroCrew checked the official MCP registry and Kapso's own site.
- MCP serverSet up the Kapso MCP server
Kapso integrations
Kapso connects with 18 apps, including WhatsApp, WhatsApp Business app, and Slack; 7 of them are listed on ZeroCrew too. ZeroCrew read the list from Kapso's own site on November 9, 2026.
Is Kapso right for what you're building?
ZeroCrew's Agent Zero checks Kapso against its site, what founders say about it, and its competitors. The result: a yes, a no, or a better tool for what you describe. Free.