Detection rules

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Each LLMContextKind is detected from one or more environment variables. A tool is detected when any of its variables matches:

LLMContextKind	Variables	Match when
ClaudeCode	`CLAUDECODE`, `CLAUDE_CODE_ENTRYPOINT`	Set
Cursor	`CURSOR_EDITOR`, `CURSOR_AI`	Set
Gemini	`GEMINI_CLI`	True
GitHubCopilot	`GITHUB_COPILOT_CLI_MODE`	True
GitHubCopilot	`GH_COPILOT_WORKING_DIRECTORY`, `COPILOT_CLI`, `COPILOT_AGENT`	Set
Codex	`CODEX_CLI`, `CODEX_SANDBOX`	Set
`Aider`	`OR_APP_NAME`	Equal to `Aider`
Plandex	`OR_APP_NAME`	Equal to `plandex`
Amp	`AMP_CURRENT_THREAD_ID`	Set
QwenCode	`QWEN_CODE`	Set
Droid	`DROID_CLI`	True
OpenCode	`OPENCODE_AI`	Set
KimiCLI	`KIMI_CLI`	True
`OpenHands`	`OR_APP_NAME`	Equal to `OpenHands`
Goose	`GOOSE_TERMINAL`	Set
Cline	`CLINE_TASK_ID`	Set
RooCode	`ROO_CODE_TASK_ID`	Set
Windsurf	`WINDSURF_SESSION`	Set
GenericAgent	`AGENT_CLI`	True

Set: the variable exists and its value is not empty. Its value does not matter.
True: the value is 1, or true, yes or on, ignoring case. 0, false, no, off, an empty value and any other value do not match.
Equal to: the value is the given text, ignoring case.

Variables that are not used

Some tools also set variables that a developer can set in any shell, such as configuration variables or the variables of an editor's terminal. They would detect a person as an agent, so they are ignored. For instance, AMP_HOME, a configuration variable, does not detect Amp: only AMP_CURRENT_THREAD_ID, which Amp sets in the commands it runs, does.

Flag your own agent

AGENT_CLI is not tied to a tool. Set it to 1 or true in the environment of the commands your own agent or automation runs, and they are detected as LLMContextKind.GenericAgent.