Upload an attachment
curl --request POST \
--url https://api.devin.ai/v1/attachments \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file='@example-file'import requests
url = "https://api.devin.ai/v1/attachments"
files = { "file": ("example-file", open("example-file", "rb")) }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('file', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://api.devin.ai/v1/attachments', 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.devin.ai/v1/attachments",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: multipart/form-data"
],
]);
$response = curl_exec($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.devin.ai/v1/attachments"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.devin.ai/v1/attachments")
.header("Authorization", "Bearer <token>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.devin.ai/v1/attachments")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body"<string>"{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>"
}
]
}Session Endpoints
Upload an attachment
Upload files for Devin to work with during sessions. Supports various file types including code, data, and documentation files.
POST
/
v1
/
attachments
Upload an attachment
curl --request POST \
--url https://api.devin.ai/v1/attachments \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file='@example-file'import requests
url = "https://api.devin.ai/v1/attachments"
files = { "file": ("example-file", open("example-file", "rb")) }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('file', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://api.devin.ai/v1/attachments', 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.devin.ai/v1/attachments",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: multipart/form-data"
],
]);
$response = curl_exec($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.devin.ai/v1/attachments"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.devin.ai/v1/attachments")
.header("Authorization", "Bearer <token>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.devin.ai/v1/attachments")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body"<string>"{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>"
}
]
}This endpoint uploads files to our servers and returns a URL that you can reference in Devin sessions. The file isn’t automatically sent to any session - you need to include the URL in your prompts.
To reference an uploaded file in a Devin session:
Important: The
How to Use Uploaded Files
Devin only recognizes attachments when they are written in the exact format
ATTACHMENT:"{file_url}" (singular ATTACHMENT, all caps). The ATTACHMENT: line must be on its own line in the prompt, and the URL must be enclosed in double quotes.Simply including the raw URL without this format will not work. Variants like ATTACHMENTS: (plural) are also not recognized.- Upload the file using this endpoint to get a URL
- Include the URL in your prompt when creating a session or sending a message
- Format the URL correctly by putting
ATTACHMENT:"{file_url}"on its own line in your prompt
Complete Example
import os
import requests
DEVIN_API_KEY = os.getenv("DEVIN_API_KEY")
# Step 1: Upload the file
with open("data.csv", "rb") as f:
response = requests.post(
"https://api.devin.ai/v1/attachments",
headers={"Authorization": f"Bearer {DEVIN_API_KEY}"},
files={"file": f}
)
file_url = response.text
# Step 2: Create a session that references the uploaded file
session_response = requests.post(
"https://api.devin.ai/v1/sessions",
headers={"Authorization": f"Bearer {DEVIN_API_KEY}"},
json={
"prompt": f"""Please analyze the data in the attached CSV file and create a summary report.
Focus on identifying trends and key insights.
ATTACHMENT:"{file_url}"
"""
}
)
print(session_response.json())
ATTACHMENT: prefix must be on its own line in the prompt with the URL enclosed in double quotes, exactly as shown above: ATTACHMENT:"{url}". To attach multiple files, add one ATTACHMENT:"{file_url}" line per file.⌘I