Construire avec l’API Claude en solopreneur (2026)

Frequently asked

What kinds of small products can a solopreneur ship on Claude API?

Niche content generators, focused chat agents, internal automation, email triage, support assistants, content repurposing tools. Anything where good prose plus a clear domain rule outperforms a generic LLM tab.

How do you keep API costs sane?

Cache anything you ask twice. Compress system prompts. Use shorter models for cheap tasks and reserve full-strength for the slow path. Most early production tools cost less than 50 $ per month even with real users.

Is prompt engineering really that hard?

For a solo product, no. Treat prompts like code: version them, test outputs against fixtures, and write tests for what you do not want as well as what you do. Most production prompt bugs are about edge cases, not "clever wording".

When should you skip the LLM and write a regular script?

Anytime the rules are stable, the inputs are predictable and the outputs need to be exact. LLMs shine on judgment and language; deterministic transforms are still cheaper, faster and safer hand-coded.

How do nomads ship API products?

Cheap, lean, deployed to Cloudflare or Vercel with a Stripe link. Build in the open, post the dev log on X or LinkedIn, charge from day one, and skip everything that does not directly serve the next paying user.