Mycel vs Building it yourself
The honest comparison, since it's what most people actually do.
What Building it yourself is good at
You know your domain better than any framework. A prompt, an API call and a cron job gets a demo working in a weekend, and for a while that is the fastest path. It really is. Most good AI service businesses start exactly this way.
The actual difference
The demo isn't the hard part. What takes the next six months is the boring half: credential custody, tenant isolation that actually holds, an approval flow people will use rather than switch off, an audit trail a client's accountant accepts, scheduling that doesn't double-fire, and somewhere for your customers to log in. Mycel is that half, open source, so you keep the part that's actually yours — the judgment.
Side by side
| Building it yourself | Mycel | |
|---|---|---|
| Time to demo | A weekend | An afternoon |
| Time to second customer | Weeks of isolation work | A new project |
| Audit trail | Logs, probably | Hash-chained, verifiable |
| Credential custody | Env vars, probably | Encrypted vault, never in the sandbox |
| Customer portal | A month | Included |
| You own | Everything, including the plumbing | The judgment. The plumbing is Apache-2.0 |
Choose Building it yourself
- You're validating whether anyone wants it
- One customer, one workflow, no compliance conversation yet
- The domain is so unusual that generic primitives fight you
Choose Mycel
- The second customer arrived and isolation stopped being theoretical
- Someone asked for a DPA or an audit trail
- You're spending more time on plumbing than on the service
Other comparisons: ChatGPT, Claude, or whichever tab is already open, Grok Bot and the AI-employee platforms, Hiring an account manager, Profound, Otterly, Zapier & n8n, Temporal, LangGraph, CrewAI & AutoGen