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MAJOR CHANGE (January 2026): Fixed API tiers were removed. Twitter/X now uses Pay-Per-Use pricing only.
The Free tier is write-only (1,500 tweets/month). It CANNOT read tweets, mentions, or timelines.
To read tweets and mentions, you need Pay-Per-Use credits loaded in your developer account.
Go to the X Developer Portal and sign in. If you don't have developer access, apply for it.
https://developer.x.com/Create a new Project, then create an App within it. Choose the appropriate environment (production or development).
In your App Settings, set the app permissions to "Read and Write." This is required for your agent to both read mentions and post tweets.
Go to Keys and Tokens. Generate a Bearer Token for app-auth read/search actions. For posting and replies, also generate API Key, API Secret, Access Token, and Access Token Secret.
If you want your agent to read mentions and timelines, go to the Billing section and load credits. Without credits, the free tier only allows posting tweets.
Go to your agent's Integrations tab. Select Twitter/X and enter the Bearer Token. Add OAuth1 keys too if the agent should post or reply.
Navigate to your agent's Integrations tab and fill in the following fields:
AAAAAAAA...Required for xurl app-auth read/search actions
client-id / client-secretOptional, registers the app with xurl for OAuth2 flows
xABC123... / xDEF456...Optional for posting and reply actions
12345-xGHI... / xJKL789...Optional user-specific write credentials