Deterministic delegation: run repeatable jobs as checked workflow files

How to use

This is a first-party integration with a runnable offline demonstration that needs no keys.

Paid runs can be capped with --max-cost-usd, while the offline mock and Ollama routes need no keys.

Workflows are intentionally non-interactive; use OpenCode for autonomous coding and this route for repeatable digest, triage, ETL, or report pipelines.

The offline demonstration needs no API key or model server.

The engine is AGPL-3.0, while the specification and TypeScript SDK are Apache-2.0; the source was contributed by the Nika author.

1. Install the single-binary runner and the skill.

   brew install supernovae-st/tap/nika
   hermes skills tap add supernovae-st/nika-agents

2. No additional component is required for the offline demonstration.

Use a prompt to define the workflow.

Ask Hermes to capture a repeated job as a workflow and run it with receipts.

Use the nika skill. Create a workflow file daily-brief.nika.yaml that
fetches https://news.ycombinator.com/rss (feed mode), keeps the top 5
titles, and writes them to brief.md. Check it with nika check first,
run it on the mock model, then verify the trace and tell me the chain
head from the terminal output, not from memory.

Alternatively, give Hermes an existing workflow file.

Run nika check on report.nika.yaml, explain any findings with
nika explain, fix the file, and only run it once check passes.
Cap the run at $0.10 with --max-cost-usd.

Run the supplied demonstration offline with zero keys.

nika examples run 01-hello --model mock/echo   # deterministic offline run
nika examples run 01-hello --model ollama/qwen3.5:4b   # same run, real local model
nika trace verify                              # latest run · exit 0 = chain intact