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Run work across more than one agent — choose between the task subagent, the delegate tool, and a second agentica CLI in tmux driven by peer messages (list_agents / send_message).
Passed 22 of 24 test cases with the skill, and 11 of 24 without it.
and 11 more in the full report
11 fixed11 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
I want to launch a background worker in a separate tmux session to write documentation inside `~/code/myrepo-docs`. Please generate the shell command to boot this agent, making sure it points to that target directory so its auto-generated name is clean and uses our saved profile named 'sonnet-prod'. Also, tell me what command I should give my team so they can attach to the tmux session and monitor its work.
| Checked | Without skill | With skill |
|---|---|---|
| Specifies launching agentica as the binary command inside tmux. | Missed | Passed |
| Uses the --profile flag with sonnet-prod to set the agent profile. | Passed | Passed |
| Provides tmux attach -t docs-worker as the attach command for team members. | Passed | Passed |
The instructions your model reads when the skill loads.
Three mechanisms, and they are not interchangeable. Pick by what you need back, not by how big the job feels.
task | delegate | a second CLI in tmux | |
|---|---|---|---|
| Runs in | your process | its own process, headless | its own terminal |
| You get back | the subagent's answer | the worker's final answer | messages, when it sends them |
| Can write files | no, read-only | yes | yes |
| Parallel | yes — several in one message | yes, a few at once | start several sessions |
| Human can watch or join | no | no | yes, attach to the pane |
| Outlives you | no | no | yes, until killed |
| Cost | cheap aux model each | a whole session each | a whole session each |
task for reading and reporting: explore, research, review. Cheapest,
and the default way to run workers in parallel — issue several task calls
in one message. Parallelism is not a reason to reach for delegate or a
second CLI.delegate for a self-contained job you want the answer to. It is a full
session with its own context window, tracked like a background process.Do not reach for the second CLI when task or delegate would do. It is the
most expensive option and the only one that leaves something running.
This session moving itself into a checkout of the same repo is the
worktree skill (the worktree tool), not a second process.
Requires tmux (command -v tmux). Everything below is one execute call.
tmux new-session -d -s docs-worker -c ~/code/myrepo-docs agentica
Then confirm it came up with list_agents - it publishes itself within a
test cases passed, vs 11 / 24 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.