Write prompts in a clean web UI with live {{variable}} detection. Every save is an immutable version. Fetch the latest — or any version — over REST, variables filled in.
curl https://api.promptbench.dev/v1/prompts/funko-transform/render \ -H "Authorization: Bearer pb_live_..." \ -H "Content-Type: application/json" \ -d '{"variables": {"subject": "Darth Vader"}}'
const res = await fetch( "https://api.promptbench.dev/v1/prompts/funko-transform/render", { method: "POST", headers: { Authorization: "Bearer pb_live_...", "Content-Type": "application/json", }, body: JSON.stringify({ variables: { subject: "Darth Vader" }, }), }, ); const { rendered } = await res.json();
import requests res = requests.post( "https://api.promptbench.dev/v1/prompts/funko-transform/render", headers={"Authorization": "Bearer pb_live_..."}, json={"variables": {"subject": "Darth Vader"}}, ) print(res.json()["rendered"])
{
"id": "funko-transform",
"version": 7,
"rendered": "Transform Darth Vader into a Funko Pop vinyl figure with massive square head, tiny body, glossy black circular eyes.",
"rendered_at": "2026-06-20T14:02:11Z"
}
Every save creates an immutable, numbered version. Browse the full history and restore any prior version in a click — no diffs lost, no overwrites.
Write {{variable}} anywhere in a prompt. PromptBench detects variables live as you type and fills them in at render time.
One REST endpoint serves the raw prompt or the rendered result. Authenticate with a Bearer pb_... key you generate in the UI.
Make any prompt public with one click. Share a link, grow a following, and let others discover and fork your prompts — prompt engineering in the open.
Compose in a clean editor. Variables are detected the moment you type them.
Each save snapshots an immutable version, numbered automatically. Restore anytime.
GET the latest, or POST variables to render. Drop it into your app and ship.
Make any prompt public with one click. Anyone with the link can view, fork, and use it — build a reputation around the prompts you ship.
Everything you need to get started with prompt management.
Unlimited prompts and private sharing for individuals scaling up.
For small teams building with AI, with shared workspaces and analytics.
For teams that need scale, SSO, and dedicated support.