Every deployed function is protected by default with a runtime token. Requests without a valid token receive 401 Unauthorized.
Quick start
Deploy your function
jelou deploy
# ✓ Deployed
# ▸ URL: https://my-function.fn.jelou.ai
# ⚠ A default runtime token was created for this function.
# Save it now — it will not be shown again.
# ▸ Token jfn_rt_abc123...
Save the token immediately. It will not be shown again. If you lose it, create a new one with jelou tokens create.
Call with the token
curl -X POST https://my-function.fn.jelou.ai \
-H "Content-Type: application/json" \
-H "X-Jelou-Token: jfn_rt_abc123..." \
-d '{"query": "test"}'
{ "error": "Unauthorized", "message": "Missing or invalid X-Jelou-Token header" }
How it works
- On the first deploy, the platform generates a runtime token (prefix
jfn_rt_)
- Every request must include that token in the
X-Jelou-Token header
- If the token is valid, the request reaches your handler. Otherwise, it returns
401
Routes without authentication
The /__health and /openapi.json routes never require a token. Cron triggers don’t either — the platform authenticates them automatically.
Usage examples
curl
Node.js
Python
Brain Studio (MCP)
curl -X POST https://my-function.fn.jelou.ai \
-H "Content-Type: application/json" \
-H "X-Jelou-Token: jfn_rt_abc123..." \
-d '{"phone": "593987654321"}'
const res = await fetch("https://my-function.fn.jelou.ai", {
method: "POST",
headers: {
"Content-Type": "application/json",
"X-Jelou-Token": process.env.JELOU_FUNCTION_TOKEN,
},
body: JSON.stringify({ phone: "593987654321" }),
});
const data = await res.json();
import requests
import os
res = requests.post(
"https://my-function.fn.jelou.ai",
headers={
"Content-Type": "application/json",
"X-Jelou-Token": os.environ["JELOU_FUNCTION_TOKEN"],
},
json={"phone": "593987654321"},
)
data = res.json()
To connect your function as an external MCP server in Brain Studio:
- URL:
https://my-function.fn.jelou.ai/mcp
- Header:
X-Jelou-Token → jfn_rt_abc123...
The platform does not validate anything — your code is responsible.
