Identifier limits
Maximum length and allowed characters for Pinecone identifiers, including organization, project, index, namespace, and record names.
An identifier is a string of characters used to identify "named" objects in Pinecone. The following Pinecone objects use strings as identifiers:
| Object | Field | Max # characters | Allowed characters |
|---|---|---|---|
| Organization | name |
512 | - UTF-8 except \0 - Cannot be empty |
| Project | name |
512 | - UTF-8 except \0 - Cannot be empty |
| Index | name |
45 | - a-z, 0-9, and - - Must be lowercase - Cannot start or end with - - Cannot be empty |
| Namespace | namespace |
512 | - ASCII except \0 - For the default namespace, use "" (or "__default__", in API versions 2025-04 and later) |
| Record | id |
512 | - ASCII except \0 - Cannot be empty |