POST/api/v1/prompts/ab-experiments

Create a prompt A/B experiment

Creates an experiment + 2-8 variants in one call. Worker picks it up on next poll, runs each variant against the dataset with the configured scorer suite, computes Welch's t-test or two-proportion z-test for winner declaration.

Authentication

Send Authorization: Bearer YOUR_API_KEY on every request. Generate API keys at /dashboard/api-keys.

Response

201 example

{
  "success": true
}

All status codes

201Experiment created.
400(no description)
401(no description)
403Forbidden — insufficient role for this operation.
429(no description)

Code samples

cURL

curl -X POST \
  https://evalguard.ai/api/v1/prompts/ab-experiments \
  -H "Authorization: Bearer $EVALGUARD_API_KEY" \

TypeScript

import { EvalGuard } from "@evalguard/sdk";

const client = new EvalGuard({ apiKey: process.env.EVALGUARD_API_KEY });

const response = await client.request({
  method: "POST",
  path: "/api/v1/prompts/ab-experiments",
});
console.log(response);

Python

from evalguard import EvalGuard
import os

client = EvalGuard(api_key=os.environ["EVALGUARD_API_KEY"])

response = client.request(method="POST", path="/api/v1/prompts/ab-experiments")
print(response)

Go

package main

import (
	"context"
	"fmt"
	"os"

	"github.com/evalguard/evalguard-go"
)

func main() {
	client := evalguard.NewClient(os.Getenv("EVALGUARD_API_KEY"))
	resp, err := client.Request(context.Background(), "POST", "/api/v1/prompts/ab-experiments", nil)
	if err != nil { panic(err) }
	fmt.Println(resp)
}

Errors

400401403429

Other Prompts endpoints