nika-migration

nika-migration is a skill for Claude Code from supernovae-st/nika. It costs 72 tokens per session (2,123 once invoked), scanned A, original, AGPL-3.0.

A tool for turning existing automation—such as shell scripts, Python glue, CI jobs, or prompt chains—into checkable .nika.yaml workflows.

In plain words
What is it for?
Use it to convert scripts that call language models or handle HTTP and files, and to formalize prompt chains from documentation or notebooks.
Why use it?
It helps make informal automation easier to audit, limit in cost, and replay with recorded traces.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: installed under .agents/ (shared by several agents).

Part of the nika plugin — 4 skills, 6 commands, 3 agents, 1 MCP server shipped together

Good fit Use it to convert scripts that call language models or handle HTTP and files, and to formalize prompt chains from documentation or notebooks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/supernovae-st/nika/nika-migration
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add supernovae-st/nika --skill nika-migration
Clone the repo
git clone --depth 1 https://github.com/supernovae-st/nika

Made for: Claude Code.

Or install nika, the plugin that ships this one along with the rest of its 4 skills, 6 commands, 3 agents, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for nika-migration

README.md
[![agentmods](https://agentmods.dev/badge/skills/supernovae-st/nika/nika-migration/github.svg)](https://agentmods.dev/skills/supernovae-st/nika/nika-migration)
Your own site
<a href="https://agentmods.dev/skills/supernovae-st/nika/nika-migration"><img src="https://agentmods.dev/badge/skills/supernovae-st/nika/nika-migration/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for nika-migration

Your own site · 80×15
<a href="https://agentmods.dev/skills/supernovae-st/nika/nika-migration"><img src="https://agentmods.dev/badge/skills/supernovae-st/nika/nika-migration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,123 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00072 $0.02123
Opus 5 $0.00036 $0.01061
Sonnet 5 $0.00014 $0.00425
Haiku 4.5 $0.00007 $0.00212

Measured 2d ago against content hash 4559007ccecc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

nika-migration scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| `curl` / `wget` / `fetch()` helper | `invoke:` `tool: "nika:fetch"` — **for an API, set `mode: raw` or `mode: jq`** (the default `markdown` mode is for pages and escapes JSON bodies) |
.agents/plugins/nika/skills/nika-migration/SKILL.md · 129 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago Changed 4559007ccecc
  2. 4d ago Changed · +11 lines f6911147347a
  3. 10d ago First seen · 118 lines · 72 tokens per session scan A 67476ce982c4

Subscribe to this mod's changes

nika-migration is a skill published in the GitHub repository supernovae-st/nika (75 stars, last pushed today), licensed AGPL-3.0. It adds 72 tokens to every session and 2,123 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.