fluent-brownfield-migration

fluent-brownfield-migration is a skill for Claude Code from serac-labs/serac. It costs 79 tokens per session (2,390 once invoked), scanned A, original, Apache-2.0.

A migration guide for moving an existing ServiceNow scoped application from a ServiceNow instance into a Git-managed ServiceNow SDK project. It supports an incremental move while keeping the application's behaviour unchanged at first.

In plain words
What is it for?
Checking the current project state, downloading the application, keeping metadata as XML, and gradually moving it into Fluent SDK code and Git workflows.
Why use it?
It gives developers a way to bring an application that exists only in ServiceNow into source control without changing its behaviour immediately.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the skills plugin — 56 skills shipped together

Good fit Checking the current project state, downloading the application, keeping metadata as XML, and gradually moving it into Fluent SDK code and Git workflows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/serac-labs/serac/fluent-brownfield-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 serac-labs/serac --skill fluent-brownfield-migration
Clone the repo
git clone --depth 1 https://github.com/serac-labs/serac

Made for: Claude Code.

Or install skills, the plugin that ships this one along with the rest of its 56 skills.

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 fluent-brownfield-migration

README.md
[![agentmods](https://agentmods.dev/badge/skills/serac-labs/serac/fluent-brownfield-migration.svg)](https://agentmods.dev/skills/serac-labs/serac/fluent-brownfield-migration)
Your own site
<a href="https://agentmods.dev/skills/serac-labs/serac/fluent-brownfield-migration"><img src="https://agentmods.dev/badge/skills/serac-labs/serac/fluent-brownfield-migration.svg" alt="Measured on agentmods" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,390 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00079 $0.02390
Opus 5 $0.00039 $0.01195
Sonnet 5 $0.00016 $0.00478
Haiku 4.5 $0.00008 $0.00239

Measured 8d ago against content hash a8f636ae1971, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

fluent-brownfield-migration scanned grade A with 0 findings 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 8d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/skills/fluent-brownfield-migration/SKILL.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brownfield Migration: Existing Scoped App → Fluent + Git

Take a scoped app that lives only on an instance and move it into a git-managed ServiceNow SDK (Fluent) project — incrementally, with zero functional change at the start. Based on @servicenow/sdk 4.x (now-sdk CLI). Run snow_fluent_status first to see where a project already stands (scope, SDK pin, keys.ts, XML vs Fluent counts); use snow_fluent_explain for offline SDK docs on any topic.

Where these tools run: the snow_fluent_* tools are local-only — they execute the ServiceNow SDK (now-sdk) on the developer's machine, so they only exist when the MCP server runs locally over stdio. Over a hosted HTTP transport (e.g. a web chat) they are not available, so do not call them; drive the same flow through git + CI instead: commit the project files, trigger the build/deploy pipeline, and follow the workflow runs.

1. Step zero: pull the app down as-is

Use snow_fluent_init with from=<sys_app sys_id> (CLI: now-sdk init --from <sys_id>). Since SDK 2.2.6 this does not generate Fluent code by default — it leaves every record as XML in the metadata/ folder. Those XML files are the exact files the instance exports, so there is no change to the application at this point. now.config.json captures scope + scopeId (= the sys_app sys_id), and the XML builds and installs as-is.

This means you get value immediately: the app is in git, diffable, and deployable via snow_fluent_build + snow_fluent_install — before converting a single record to TypeScript. Commit this baseline first.

✅ init --from sys_id → commit metadata/ + now.config.json + keys.ts → build → install to dev → verify
❌ init --from sys_id → immediately transform everything → fight 200 build errors with no known-good baseline

2. Convert incrementally — never big-bang

Convert table-by-table with snow_fluent_transform using the tables arg (CLI: now-sdk transform --table <comma-separated tables>, table targeting since 4.7.0). After a successful conversion, transformed files are scaffolded into the generated/ directory and removed from metadata/.

Read the full file on GitHub · 122 lines

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. 8d ago First seen · 122 lines · 79 tokens per session scan A a8f636ae1971

Subscribe to this mod's changes

fluent-brownfield-migration is a skill published in the GitHub repository serac-labs/serac (78 stars, last pushed 13d ago), licensed Apache-2.0. It adds 79 tokens to every session and 2,390 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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