How do I fix "Forbidden"?

Verify the API key and that it is sent on the right header/path. Check the key's allowed origins/methods/chains. Confirm the plan permits the requested method or transport.

Forbidden (HTTP 403)

Last updated: June 20, 2026

At a glance

Error details
Property	Value
Code	HTTP 403
Message	Forbidden
Category	transport

Cause

The transport blocked the request: missing/invalid API key, an origin or method not allowed for the key, or a key/plan restriction.

Solution

Verify the API key and that it is sent on the right header/path.
Check the key's allowed origins/methods/chains.
Confirm the plan permits the requested method or transport.

Example

{
  "body": "Forbidden",
  "status": 403
}

FAQ

Why does "Forbidden" happen?: The transport blocked the request: missing/invalid API key, an origin or method not allowed for the key, or a key/plan restriction.
How do I fix "Forbidden"?: Verify the API key and that it is sent on the right header/path. Check the key's allowed origins/methods/chains. Confirm the plan permits the requested method or transport.
What is RPC error HTTP 403?: HTTP 403 means: Forbidden. The transport blocked the request: missing/invalid API key, an origin or method not allowed for the key, or a key/plan restriction.