List Linear teams as {key, name}. Team keys are the prefix of issue identifiers, e.g. the GOV in GOV-123.

List the workflow states for a team, in workflow order, as {name, type}. These names are what create_issue and update_issue accept for state. team: team key or full team name.

List the issue labels that can be applied to an issue, as {name}. team: optional team key or full team name. With a team, returns that team's own labels followed by the workspace-wide labels; without one, the workspace-wide labels only. Names are what create_issue and update_issue accept for labels.

List active Linear users as {name, email}. name is the display name that create_issue and update_issue accept for assignee. query: optional case-insensitive substring filter over name and email.

Fetch a Linear issue by its human identifier, e.g. "GOV-123". Returns title, description, state, assignee, team, priority, labels, URL, and the git branch name Linear suggests for the issue.

List issues assigned to the owner of the configured API key, most recently updated first. state: optional state-name filter, e.g. "In Progress". Case-insensitive. The filter is applied after the fetch, so passing one makes the server over-fetch (four times limit, at least 50 issues) and then cut the result back to limit. It is therefore best-effort within that window: a matching issue further down the list than the window reaches is not returned. Raise limit if you suspect one is missing. limit: maximum number of issues returned.

Full-text search over Linear issues, with optional filters. team: team key or full team name, e.g. "GOV" or "Governance". state: workflow state name, e.g. "In Progress". Resolved against the team's workflow when team is given; without a team there is no workflow to resolve against, so the value is sent as written and must match the state name Linear stores. assignee: user display name, full name, or email. See list_users. Names are resolved the same way create_issue resolves them: a name that does not match returns an error listing the valid options, not an empty result.

Fetch the comments on a Linear issue, oldest first. identifier: human issue identifier, e.g. "GOV-123".

Post a comment on a Linear issue. Markdown is supported. identifier: human issue identifier, e.g. "GOV-123".

Create a Linear issue. Returns the created issue including its new identifier. team: team key or name, e.g. "GOV". assignee: user display name or email. See list_users. state: workflow state name, e.g. "Backlog". See list_states. priority: 0 none, 1 urgent, 2 high, 3 medium, 4 low. labels: label names on that team. See list_labels.

Update fields on an existing Linear issue. Only the fields you pass are changed. identifier: human issue identifier, e.g. "GOV-123". state, assignee, labels: names, resolved against the issue's own team. priority: 0 none, 1 urgent, 2 high, 3 medium, 4 low. Passing labels replaces the issue's labels entirely.