{"t2-invoice-chaser":"nika: v1\nworkflow:\n  id: invoice-chaser\n  description: \"Ledger CSV → overdue filter → drafted reminders → human gate → drafts file\"\n\nmodel: ollama/qwen3.5:4b   # local · zero key · swap for groq/llama-3.3-70b (drafting is a fast-model job)\n\nvars:\n  ledger_csv: \"./finance/invoices.csv\"\n\ntasks:\n  ledger:\n    invoke:\n      tool: \"nika:read\"\n      args: { path: \"${{ vars.ledger_csv }}\" }\n\n  rows:\n    with:\n      csv: ${{ tasks.ledger.output }}\n    invoke:\n      tool: \"nika:convert\"\n      args:\n        input: \"${{ with.csv }}\"\n        from: csv\n        to: json\n        has_header: true\n\n  overdue:\n    with:\n      rows: ${{ tasks.rows.output }}\n    invoke:\n      tool: \"nika:jq\"\n      args:\n        input: \"${{ with.rows }}\"\n        expression: 'map(select(.status == \"overdue\"))'\n\n  drafts:\n    with:\n      overdue: ${{ tasks.overdue.output }}\n    when: ${{ size(with.overdue) > 0 }}\n    infer:\n      prompt: |\n        Draft one short, polite payment reminder per overdue invoice ·\n        ${{ with.overdue }}\n        Markdown · one section per client · firm but warm.\n\n  approve:\n    with:\n      drafts: ${{ tasks.drafts.output }}\n    when: ${{ with.drafts != null }}   # nothing drafted · nothing to approve\n    invoke:\n      tool: \"nika:prompt\"\n      args:\n        message: \"Save the reminder drafts for sending?\"\n        default: false\n\n  save:\n    with:\n      drafts: ${{ tasks.drafts.output }}\n      approved: ${{ tasks.approve.output }}\n    when: ${{ with.drafts != null && with.approved == true }}   # zero overdue → drafts skipped (null) · don't write nothing\n    invoke:\n      tool: \"nika:write\"\n      args:\n        path: \"./finance/reminders-to-send.md\"\n        content: \"${{ with.drafts }}\"\n\noutputs:\n  overdue:\n    value: ${{ tasks.overdue.output }}\n    description: \"The overdue rows the reminders were drafted for\"\n","t4-deep-research-brief":"nika: v1\nworkflow:\n  id: deep-research-brief\n  description: \"plan → budgeted research agent → thinking synthesis → brief on disk\"\n\nmodel: ollama/qwen3.5:4b   # local default · per-task overrides below pick stronger models\n\nvars:\n  topic:\n    type: string\n    required: true\n    description: \"What to research\"\n\ntasks:\n  plan:\n    infer:\n      model: anthropic/claude-haiku-4-5    # planning is a fast-model job\n      prompt: \"Break '${{ vars.topic }}' into 4 sharp research queries · no overlap.\"\n      schema:\n        type: object\n        required: [queries]\n        properties:\n          queries:\n            type: array\n            items: { type: string }\n\n  investigate:\n    with:\n      plan_queries: ${{ tasks.plan.output.queries }}\n    agent:\n      system: |\n        You are a rigorous researcher. Work the queries one by one ·\n        fetch sources · keep verbatim quotes · note what each source\n        actually supports. Call nika:done when the plan is exhausted.\n      prompt: \"Research plan · ${{ with.plan_queries }}\"\n      tools:\n        - \"nika:fetch\"                 # the web\n        - \"nika:write\"                 # scratch notes\n        - \"nika:done\"                  # the loop-completion sentinel\n      max_turns: 25\n      max_tokens_total: 150000\n      schema:\n        type: object\n        required: [findings, sources]\n        properties:\n          findings:\n            type: array\n            items: { type: string }\n          sources:\n            type: array\n            items: { type: string }\n\n  brief:\n    with:\n      investigate_findings: ${{ tasks.investigate.output.findings }}\n      investigate_sources: ${{ tasks.investigate.output.sources }}\n    infer:\n      prompt: |\n        Findings · ${{ with.investigate_findings }}\n        Sources · ${{ with.investigate_sources }}\n        Write the executive brief · what's true · what's contested ·\n        what it means · what to do. Two pages max.\n      thinking:\n        enabled: true\n        budget_tokens: 8000\n\n  save:\n    with:\n      brief: ${{ tasks.brief.output }}\n    invoke:\n      tool: \"nika:write\"\n      args:\n        path: \"./research/${{ vars.topic }}.md\"\n        content: \"${{ with.brief }}\"\n        create_dirs: true\n\noutputs:\n  brief: ${{ tasks.brief.output }}\n  sources:\n    value: ${{ tasks.investigate.output.sources }}\n    description: \"Every source the agent actually used\"\n","t3-localization-factory":"nika: v1\nworkflow:\n  id: localization-factory\n  description: \"glob docs → parallel read → parallel translate → mirror tree\"\n\nmodel: ollama/qwen3.5:4b   # local default · swap for mistral/mistral-large (EU model for EU locales)\n\nvars:\n  lang: \"fr\"\n  source_glob: \"./docs/**/*.md\"\n\ntasks:\n  files:\n    invoke:\n      tool: \"nika:glob\"\n      args:\n        pattern: \"${{ vars.source_glob }}\"\n        exclude: [\"**/node_modules/**\"]\n\n  texts:\n    with:\n      files: ${{ tasks.files.output }}\n    for_each: ${{ with.files }}\n    max_parallel: 8\n    invoke:\n      tool: \"nika:read\"\n      args: { path: \"${{ item }}\" }\n\n  pairs:\n    with:\n      files: ${{ tasks.files.output }}\n      texts: ${{ tasks.texts.output }}\n    invoke:\n      tool: \"nika:jq\"\n      args:\n        input: [\"${{ with.files }}\", \"${{ with.texts }}\"]\n        expression: \"transpose | map({path: .[0], text: .[1]})\"\n\n  translated:\n    with:\n      pairs: ${{ tasks.pairs.output }}\n    for_each: ${{ with.pairs }}\n    max_parallel: 3                    # rate-limit the provider\n    fail_fast: false                   # finish the batch · a failed file yields null at its index\n    on_error:\n      recover: null                    # null keeps the transpose zip aligned (order preserved)\n    infer:\n      prompt: |\n        Translate to ${{ vars.lang }} · keep markdown structure, code blocks\n        untouched, and the original tone ·\n        ${{ item.text }}\n\n  bundle:\n    with:\n      pairs: ${{ tasks.pairs.output }}\n      translated: ${{ tasks.translated.output }}\n    invoke:\n      tool: \"nika:jq\"\n      args:\n        input: [\"${{ with.pairs }}\", \"${{ with.translated }}\"]\n        expression: \"transpose | map(select(.[1] != null)) | map({path: .[0].path, text: .[1]})\"\n\n  mirror:\n    with:\n      bundle: ${{ tasks.bundle.output }}\n    for_each: ${{ with.bundle }}\n    max_parallel: 8\n    invoke:\n      tool: \"nika:write\"\n      args:\n        path: \"./i18n/${{ vars.lang }}/${{ item.path }}\"\n        content: \"${{ item.text }}\"\n        create_dirs: true\n\noutputs:\n  files:\n    value: ${{ tasks.files.output }}\n    description: \"Every source file that was mirrored\"\n"}

the workflow library

The shelf.

The files the home page picks from — every one real, every claim honest: a file with a recorded trace replays from the record; a browse-only file is shown to read, with nika run as the affordance. Each owns a room.

10filesone room each
7recordedreal traces, replayed
3browse-onlyread, then run yourself
4verbs at mostthe whole grammar

daily-brief.nika.yamlrecorded · invoke · infer
notes, inbox and calendar become the morning brief.
pr-risk-review.nika.yamlrecorded · exec · infer · agent · invoke
scores a diff’s blast radius, probes only when it’s high.
meeting-actions.nika.yamlrecorded · invoke · infer
a transcript becomes typed action items with owners.
price-watch.nika.yamlrecorded · invoke
zero model · pings when the price crosses your line.
social-repurpose.nika.yamlrecorded · invoke · infer
one post rewritten for three channels, in parallel.
standup-digest.nika.yamlrecorded · invoke · exec · infer
yesterday’s commits become your three standup bullets.
etl-quarantine.nika.yamlrecorded · invoke
zero model · bad rows quarantine, good rows aggregate.
t2-invoice-chaser.nika.yamlbrowse-only · invoke · infer
finds the overdue, drafts reminders, waits for your yes.
t4-deep-research-brief.nika.yamlbrowse-only · infer · agent · invoke
an agent works the web inside hard caps, then the brief.
t3-localization-factory.nika.yamlbrowse-only · invoke · infer
every doc translated in parallel, the tree mirrored back.

The wider gallery lives in the showcase — every entry conformance-gated upstream. Read the spec →