"nika: v1\nworkflow:\n  id: social-repurpose\n  description: \"One post → thread + LinkedIn + newsletter, in parallel\"\n\nmodel: ollama/qwen3.5:4b   # local · zero key · swap for mistral/mistral-large or any provider\n\nconst:\n  # The sample post ships with the repo. Point this at your own and move the\n  # read permit with it — `permits:` cannot interpolate (NIKA-AUTH-007).\n  post_path: \"examples/fixtures/launch-post.md\"\npermits:\n  tools: [\"nika:read\", \"nika:write\"]\n  # One file in, one file out · each named exactly, no subtree granted.\n  fs:\n    read: [\"examples/fixtures/launch-post.md\"]\n    write: [\"out/social-bundle.md\"]\n\ntasks:\n  post:\n    invoke:\n      tool: \"nika:read\"\n      args: { path: \"\u0024{{ const.post_path }}\" }\n\n  # Three rewrites · no deps between them · they run concurrently.\n  thread:\n    with:\n      post: \u0024{{ tasks.post.output }}\n    infer:\n      max_tokens: 700\n      prompt: \"Turn this post into a 6-tweet thread · keep the voice · \u0024{{ with.post }}\"\n\n  linkedin:\n    with:\n      post: \u0024{{ tasks.post.output }}\n    infer:\n      max_tokens: 500\n      prompt: \"Rewrite this post for LinkedIn · hook first · \u0024{{ with.post }}\"\n\n  newsletter:\n    with:\n      post: \u0024{{ tasks.post.output }}\n    infer:\n      max_tokens: 200\n      prompt: \"Write a 3-sentence newsletter blurb for this post · \u0024{{ with.post }}\"\n\n  bundle:\n    with:\n      t: \u0024{{ tasks.thread.output }}\n      l: \u0024{{ tasks.linkedin.output }}\n      n: \u0024{{ tasks.newsletter.output }}\n    invoke:\n      tool: \"nika:write\"\n      args:\n        path: out/social-bundle.md\n        create_dirs: true\n        # Prose artifact → a `content: |` block with interpolations is right\n        # here. A `.json` artifact is the opposite case: one `\u0024{{ … }}` value,\n        # never hand-typed braces (that emits unquoted fields).\n        content: |\n          # Social bundle\n\n          ## Thread\n          \u0024{{ with.t }}\n\n          ## LinkedIn\n          \u0024{{ with.l }}\n\n          ## Newsletter\n          \u0024{{ with.n }}\n\noutputs:\n  bundle_path: \u0024{{ tasks.bundle.output }}\n"

{"a":{"graph_format":2,"workflow":"social-repurpose","nodes":[{"id":"post","verb":"invoke","tool":"nika:read","permits":["tool: nika:read"]},{"id":"thread","verb":"infer","model":"ollama/qwen3.5:4b","permits":[]},{"id":"linkedin","verb":"infer","model":"ollama/qwen3.5:4b","permits":[]},{"id":"newsletter","verb":"infer","model":"ollama/qwen3.5:4b","permits":[]},{"id":"bundle","verb":"invoke","tool":"nika:write","permits":["fs.write: out/social-bundle.md","tool: nika:write"]}],"edges":[{"from":"linkedin","to":"bundle","kind":"value"},{"from":"newsletter","to":"bundle","kind":"value"},{"from":"post","to":"linkedin","kind":"value"},{"from":"post","to":"newsletter","kind":"value"},{"from":"post","to":"thread","kind":"value"},{"from":"thread","to":"bundle","kind":"value"}]},"engine":"0.106.1"}

showcase · tier 1 · content

Social repurpose

One post becomes a thread, a LinkedIn version and a newsletter blurb, rewritten in parallel.

Write once, publish everywhere, same voice on every channel. · conformance-gated in nika-spec ↗ · re-proven at every push

5tasksthe plan falls out of the bindings
3wavesparallel by construction
2verbs exercisedinvoke · infer
T1the tiercontent

The whole file

5 tasks · 3 waves

The plan falls out of the bindings, nothing is scheduled by hand.

social-repurpose.nika.yamlsource

1nika: v12workflow:3  id: social-repurpose4  description: "One post → thread + LinkedIn + newsletter, in parallel"56model: ollama/qwen3.5:4b   # local · zero key · swap for mistral/mistral-large or any provider78const:9  # The sample post ships with the repo. Point this at your own and move the10  # read permit with it — `permits:` cannot interpolate (NIKA-AUTH-007).11  post_path: "examples/fixtures/launch-post.md"12⛨permits:13  ⛨tools: ["nika:read", "nika:write"]14  # One file in, one file out · each named exactly, no subtree granted.15  ⛨fs:16    ⛨read: ["examples/fixtures/launch-post.md"]17    ⛨write: ["out/social-bundle.md"]1819tasks:20  post:21    ◆invoke:22      tool: "nika:read"23      args: { path: "${{ const.post_path }}" }2425  # Three rewrites · no deps between them · they run concurrently.26  thread:27    with:28      post: ${{ tasks.post.output }}29    ◇infer:30      max_tokens: 70031      prompt: "Turn this post into a 6-tweet thread · keep the voice · ${{ with.post }}"3233  linkedin:34    with:35      post: ${{ tasks.post.output }}36    ◇infer:37      max_tokens: 50038      prompt: "Rewrite this post for LinkedIn · hook first · ${{ with.post }}"3940  newsletter:41    with:42      post: ${{ tasks.post.output }}43    ◇infer:44      max_tokens: 20045      prompt: "Write a 3-sentence newsletter blurb for this post · ${{ with.post }}"4647  bundle:48    with:49      t: ${{ tasks.thread.output }}50      l: ${{ tasks.linkedin.output }}51      n: ${{ tasks.newsletter.output }}52    ◆invoke:53      tool: "nika:write"54      args:55        path: out/social-bundle.md56        create_dirs: true57        # Prose artifact → a `content: |` block with interpolations is right58        # here. A `.json` artifact is the opposite case: one `${{ … }}` value,59        # never hand-typed braces (that emits unquoted fields).60        content: |61          # Social bundle6263          ## Thread64          ${{ with.t }}6566          ## LinkedIn67          ${{ with.l }}6869          ## Newsletter70          ${{ with.n }}7172outputs:73  bundle_path: ${{ tasks.bundle.output }}74

audited · 5 tasks · 3 waves · permits declarednika 0.106.1

nika inspect · engine 0.106.1 · vendored graph, never re-derived

6 declared edges · 3 waves · the plan falls out of the bindings

try itopen in the playground guidethe walkthrough · docs verbinvoke verbinfer toolnika:read toolnika:write