set_history_limit
Set the scrollback history limit for a session or its global default. From tmux 3.7 existing panes take it too, and lowering it discards their scrollback past the new limit. Delete tmux state; accepts no command payload.
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Arguments
limitrequired · integer- Lines of scrollback to keep per pane.
sessionoptional · string | null- The session to change, by `$`-prefixed id or name. Omit to change the global default.
Schemas
The schema defines required fields, nested values, defaults, and validation constraints.
Input schema
{ "$schema": "https://json-schema.org/draft/2020-12/schema", "additionalProperties": false, "properties": { "limit": { "description": "Lines of scrollback to keep per pane.", "minimum": 0, "type": "integer" }, "session": { "description": "The session to change, by `$`-prefixed id or name. Omit to change the\nglobal default.", "type": [ "string", "null" ] } }, "required": [ "limit" ], "type": "object"}Output schema
{ "$schema": "https://json-schema.org/draft/2020-12/schema", "properties": { "name": { "type": "string" }, "target": { "type": [ "string", "null" ] }, "value": { "type": "string" } }, "required": [ "name", "value" ], "type": "object"}Tool annotations
{ "destructiveHint": true, "idempotentHint": true, "openWorldHint": false, "readOnlyHint": false, "title": "Set History Limit"}