List Agent Versions

curl --request POST \
  --url https://api.velt.dev/v2/agents/versions/list \
  --header 'Content-Type: application/json' \
  --header 'x-velt-api-key: <x-velt-api-key>' \
  --header 'x-velt-auth-token: <x-velt-auth-token>' \
  --data '
{
  "data": {
    "agentId": "<string>"
  }
}
'

import requests

url = "https://api.velt.dev/v2/agents/versions/list"

payload = { "data": { "agentId": "<string>" } }
headers = {
    "x-velt-api-key": "<x-velt-api-key>",
    "x-velt-auth-token": "<x-velt-auth-token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-velt-api-key': '<x-velt-api-key>',
    'x-velt-auth-token': '<x-velt-auth-token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({data: {agentId: '<string>'}})
};

fetch('https://api.velt.dev/v2/agents/versions/list', 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.velt.dev/v2/agents/versions/list",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'data' => [
        'agentId' => '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-velt-api-key: <x-velt-api-key>",
    "x-velt-auth-token: <x-velt-auth-token>"
  ],
]);

$response = curl_exec($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://api.velt.dev/v2/agents/versions/list"

	payload := strings.NewReader("{\n  \"data\": {\n    \"agentId\": \"<string>\"\n  }\n}")

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

	req.Header.Add("x-velt-api-key", "<x-velt-api-key>")
	req.Header.Add("x-velt-auth-token", "<x-velt-auth-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.post("https://api.velt.dev/v2/agents/versions/list")
  .header("x-velt-api-key", "<x-velt-api-key>")
  .header("x-velt-auth-token", "<x-velt-auth-token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"agentId\": \"<string>\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.velt.dev/v2/agents/versions/list")

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

request = Net::HTTP::Post.new(url)
request["x-velt-api-key"] = '<x-velt-api-key>'
request["x-velt-auth-token"] = '<x-velt-auth-token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"agentId\": \"<string>\"\n  }\n}"

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

{
  "result": {
    "status": "success",
    "message": "Versions listed successfully",
    "data": {
      "versions": []
    }
  }
}

POST

agents

versions

list

List Agent Versions

curl --request POST \
  --url https://api.velt.dev/v2/agents/versions/list \
  --header 'Content-Type: application/json' \
  --header 'x-velt-api-key: <x-velt-api-key>' \
  --header 'x-velt-auth-token: <x-velt-auth-token>' \
  --data '
{
  "data": {
    "agentId": "<string>"
  }
}
'

import requests

url = "https://api.velt.dev/v2/agents/versions/list"

payload = { "data": { "agentId": "<string>" } }
headers = {
    "x-velt-api-key": "<x-velt-api-key>",
    "x-velt-auth-token": "<x-velt-auth-token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-velt-api-key': '<x-velt-api-key>',
    'x-velt-auth-token': '<x-velt-auth-token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({data: {agentId: '<string>'}})
};

fetch('https://api.velt.dev/v2/agents/versions/list', 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.velt.dev/v2/agents/versions/list",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'data' => [
        'agentId' => '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-velt-api-key: <x-velt-api-key>",
    "x-velt-auth-token: <x-velt-auth-token>"
  ],
]);

$response = curl_exec($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://api.velt.dev/v2/agents/versions/list"

	payload := strings.NewReader("{\n  \"data\": {\n    \"agentId\": \"<string>\"\n  }\n}")

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

	req.Header.Add("x-velt-api-key", "<x-velt-api-key>")
	req.Header.Add("x-velt-auth-token", "<x-velt-auth-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.post("https://api.velt.dev/v2/agents/versions/list")
  .header("x-velt-api-key", "<x-velt-api-key>")
  .header("x-velt-auth-token", "<x-velt-auth-token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"agentId\": \"<string>\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.velt.dev/v2/agents/versions/list")

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

request = Net::HTTP::Post.new(url)
request["x-velt-api-key"] = '<x-velt-api-key>'
request["x-velt-auth-token"] = '<x-velt-auth-token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"agentId\": \"<string>\"\n  }\n}"

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

{
  "result": {
    "status": "success",
    "message": "Versions listed successfully",
    "data": {
      "versions": []
    }
  }
}

Use this API to fetch the version history for a custom agent. A new version is created automatically on every Update Agent Version call. Versions are returned newest-first (descending by version number). Each version is a behavioral snapshot of the agent at that point in time — identity fields (name, description, enabled, managedBy) live on the root agent document and are not part of version snapshots. Any auth secrets in a version snapshot are redacted ("__redacted__") before the response is returned: both rest-api strategy secrets and mcp-tools server secrets (execution.mcpServers[].auth).

Endpoint

POST https://api.velt.dev/v2/agents/versions/list

Headers

x-velt-api-key

string

required

Your API key.

x-velt-auth-token

string

required

Your Auth Token.

Body

Params

data

object

required

Show properties

agentId

string

required

Min 1 char. Agent ID.

Example Requests

{
  "data": {
    "agentId": "abc123def456"
  }
}

Response

Success Response

{
  "result": {
    "status": "success",
    "message": "Versions listed successfully",
    "data": {
      "versions": [
        {
          "id": "v3",
          "version": 3,
          "createdAt": 1711900000000,
          "instructions": "Check headings use 'Inter' font. Verify #1A73E8 on all CTAs and links.",
          "contextGathering": {
            "strategies": ["web-page-text", "web-page-screenshot", "web-page-html"]
          },
          "execution": {
            "executionStrategy": "ai",
            "responseDescriptions": { "title": "Short name for the brand inconsistency" }
          },
          "postProcess": {
            "guardrails": { "enabled": true },
            "deletePreviousSuggestions": { "enabled": true }
          }
        },
        {
          "id": "v2",
          "version": 2,
          "createdAt": 1711800000000,
          "instructions": "Check headings use 'Inter' font. Verify #1A73E8 on all CTAs and links.",
          "contextGathering": { "strategies": ["web-page-text", "web-page-screenshot"] },
          "execution": { "executionStrategy": "ai" }
        },
        {
          "id": "v1",
          "version": 1,
          "createdAt": 1711700000000,
          "instructions": "Check headings use Inter font...",
          "contextGathering": { "strategies": ["web-page-text"] }
        }
      ]
    }
  }
}

Field	Type	Description
`data.versions`	object[]	Version snapshots, newest first.
`versions[].id`	string	Version document ID in the `v{N}` format (e.g. `"v3"`).
`versions[].version`	number	Version number.
`versions[].createdAt`	number	Epoch ms when the version was created.

Failure Response

{
  "error": {
    "message": "ERROR_MESSAGE",
    "status": "NOT_FOUND"
  }
}

Errors: NOT_FOUND (Store database not found, or agent does not exist).

{
  "result": {
    "status": "success",
    "message": "Versions listed successfully",
    "data": {
      "versions": []
    }
  }
}

Update Agent Version Restore Agent Version

⌘I

REST APIs

SDK

List Agent Versions

Endpoint

Headers

Body

Params

Example Requests

Response

Success Response

Failure Response

​Endpoint

​Headers

​Body

​Params

​Example Requests

​Response

​Success Response

​Failure Response

Endpoint

Headers

Body

Params

Example Requests

Response

Success Response

Failure Response