Lovable
Ask Lovable to follow Blog with Next.js. Tell it the keys are BUCKET_SLUG and BUCKET_READ_KEY, server-side only.
If it is creating the Cosmic project itself, the signup endpoint is POST https://dapi.cosmicjs.com/v3/agents/sign-up and the documented agent_id example for this tool is lovable. The steps are AI onboarding.
After the project exists, connect the hosted MCP server only if Lovable is running a client that can hold the write key outside the generated frontend. The URL is https://mcp.cosmicjs.com/v1/buckets/{bucket-slug}.
FAQ
How should Lovable learn the API?
Give it https://www.cosmicjs.com/docs/how-to/blog-nextjs.md and https://www.cosmicjs.com/llms.txt. Do not paste a write key into the chat.
Can Lovable provision the bucket?
An agent can call POST /v3/agents/sign-up. Use agent_id lovable so the signup is attributable. The human still claims the project from the email.
How much does Cosmic cost?
Project plans are Free ($0), Builder ($99/mo), Team ($299/mo), Business ($499/mo), Enterprise (custom pricing). Yearly billing saves 10%. Workspace plans are Small Workspace ($999/mo) and Large Workspace ($2,999/mo), and they start with a 30-day free trial. Allowances, add-on rates, and the rest of the pricing FAQ are plain text at https://www.cosmicjs.com/pricing.md.
Are API keys required, and is content private?
Each Bucket has a read key and a write key in Bucket Settings > API Access. GET requests use the read key. POST, PATCH, and DELETE use the write key as Authorization: Bearer. Do not put the write key in a browser bundle, a mobile app, or a NEXT_PUBLIC_ variable. SAML single sign-on is on Large Workspace and Enterprise. The audit log is append-only. Text versions: https://www.cosmicjs.com/security.md and https://www.cosmicjs.com/docs/dashboard/audit-log.md.
Can an agent create a Cosmic project without an existing account?
Yes. POST https://dapi.cosmicjs.com/v3/agents/sign-up provisions a free-tier project and bucket tied to a human email, with no existing Cosmic account. The human claims it with the emailed one-time code. The playbook is https://www.cosmicjs.com/docs/ai-onboarding.md.