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GET
/
agents
/
{agent_id}
/
mutations
/
{mutation_id}
Get mutation
curl --request GET \
  --url https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id} \
  --header 'X-API-Key: <api-key>'
import requests

url = "https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id}"

headers = {"X-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)
const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));
<?php

$curl = curl_init();

curl_setopt_array($curl, [
CURLOPT_URL => "https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"X-API-Key: <api-key>"
],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}
package main

import (
"fmt"
"net/http"
"io"
)

func main() {

url := "https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id}"

req, _ := http.NewRequest("GET", url, nil)

req.Header.Add("X-API-Key", "<api-key>")

res, _ := http.DefaultClient.Do(req)

defer res.Body.Close()
body, _ := io.ReadAll(res.Body)

fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.get("https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id}")
.header("X-API-Key", "<api-key>")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.coval.dev/v1/agents/{agent_id}/mutations/{mutation_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-API-Key"] = '<api-key>'

response = http.request(request)
puts response.read_body
{
  "mutation": {
    "id": "01ARZ3NDEKTSV4RRFFQ69G5FAV",
    "agent_id": "gk3jK9mPq2xRt5vW8yZaBc",
    "display_name": "GPT-4 Fast VAD",
    "description": "Testing faster VAD settings with GPT-4",
    "config_overrides": {
      "voice": "nova",
      "vad_stop_secs": 0.3
    },
    "parameter_values": {
      "voice": "nova",
      "vad_stop_secs": "0.3"
    },
    "create_time": "2025-10-14T12:00:00Z",
    "update_time": "2025-10-15T14:30:00Z"
  }
}
{
"error": {
"code": "UNAUTHENTICATED",
"message": "Authentication failed",
"details": [
{
"field": "X-API-Key",
"description": "Invalid or missing API key"
}
]
}
}
{
"error": {
"code": "NOT_FOUND",
"message": "Mutation not found",
"details": [
{
"field": "mutation_id",
"description": "Mutation '01ARZ3NDEKTSV4RRFFQ69G5FAV' does not exist or is not accessible"
}
]
}
}
{
"error": {
"code": "INTERNAL",
"message": "Internal server error",
"details": [
{
"description": "An unexpected error occurred"
}
]
}
}

Authorizations

X-API-Key
string
header
required

API key for authentication

Path Parameters

agent_id
string
required

Parent agent ID (22-character ShortUUID)

Pattern: ^[A-Za-z0-9]{22}$
mutation_id
string
required

Mutation ID (26-character ULID)

Pattern: ^[A-Za-z0-9]{26}$

Response

Mutation retrieved successfully

mutation
object
required

Agent mutation resource representing a configuration variant.