Classify at scale without reading

classifier.dev assigns text to your categories. No key, no signup, no SDK. One HTTP call takes up to a thousand texts at a time and comes back in about a second, each with a confidence you can act on.

Data sharing and workspace usage

Synchronous classification text, labels, instructions and results are retained for training and operator review by default. Pass share_data: false in MCP arguments or the HTTP JSON body when the user has not chosen to contribute the data. The equivalent HTTP header is X-Classifier-Share-Data: false. Do not send confidential or personal information as training data. See https://classifier.dev/privacy for the current policy.

Public calls use anonymous limits. Workspace attribution and paid features require a workspace API key in the client's secure credential configuration; never put keys in this skill, chat, or committed configuration. Do not claim a connection is working until a real tool call succeeds.