update an agent

curl --request PATCH \
  --url https://silk-api.rumik.ai/v1/agents/{agent_ref} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "systemInstruction": "You are the support agent for {company}. Be brief.",
  "versionName": "shorter prompt"
}
'

import requests

url = "https://silk-api.rumik.ai/v1/agents/{agent_ref}"

payload = {
    "systemInstruction": "You are the support agent for {company}. Be brief.",
    "versionName": "shorter prompt"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    systemInstruction: 'You are the support agent for {company}. Be brief.',
    versionName: 'shorter prompt'
  })
};

fetch('https://silk-api.rumik.ai/v1/agents/{agent_ref}', 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://silk-api.rumik.ai/v1/agents/{agent_ref}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'systemInstruction' => 'You are the support agent for {company}. Be brief.',
    'versionName' => 'shorter prompt'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://silk-api.rumik.ai/v1/agents/{agent_ref}"

	payload := strings.NewReader("{\n  \"systemInstruction\": \"You are the support agent for {company}. Be brief.\",\n  \"versionName\": \"shorter prompt\"\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://silk-api.rumik.ai/v1/agents/{agent_ref}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"systemInstruction\": \"You are the support agent for {company}. Be brief.\",\n  \"versionName\": \"shorter prompt\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://silk-api.rumik.ai/v1/agents/{agent_ref}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"systemInstruction\": \"You are the support agent for {company}. Be brief.\",\n  \"versionName\": \"shorter prompt\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "019f6a2e-7c1d-7b3a-9e4f-1a2b3c4d5e6f",
  "ownerUserId": "019f0000-0000-7000-8000-000000000001",
  "name": "support",
  "systemInstruction": "You are the support agent for {company}. Be brief and warm. When the caller asks for a human, {{transfer_call}}.",
  "greeting": "Hi, this is {company} support. How can I help?",
  "ttsConfig": {
    "model": "mulberry",
    "voice": "Emma",
    "description": "a female 30s american voice, normal pitch, warm timbre, conversational pacing, calm and reassuring, professional register, like a customer support agent."
  },
  "callSettings": {
    "background_noise": {
      "enabled": true,
      "volume": 30
    },
    "idle_ladder": {
      "enabled": true,
      "nudge_after_seconds": 5,
      "presence_after_seconds": 7,
      "hangup_after_seconds": 5
    }
  },
  "language": "english",
  "source": "scratch",
  "templateSlug": null,
  "handle": "ua_fe3277d8",
  "inboundPhoneNumber": null,
  "deployed": false,
  "createdAt": "2026-09-11T10:00:00Z",
  "updatedAt": "2026-09-11T10:00:00Z"
}

{
  "error": "Invalid API key",
  "code": "unauthorized"
}

{
  "error": "This API key lacks the 'agent' scope",
  "code": "forbidden_scope"
}

{
  "error": "Agent not found",
  "code": "agent_not_found"
}

{
  "error": "This agent has no draft changes to name",
  "code": "agent_version_no_draft_to_name"
}

{
  "error": "body.toNumber: must be an E.164 phone number, e.g. +14155551234",
  "code": "invalid_request",
  "details": [
    {
      "loc": "body.toNumber",
      "message": "must be an E.164 phone number, e.g. +14155551234"
    }
  ]
}

{
  "error": "Rate limit exceeded",
  "code": "rate_limited",
  "limit": 100,
  "current": 101
}