nace Migration Agent

A Claude Code plugin and MCP server that scans your codebase for LLM calls and document-processing calls, shows which ones can move to nace, estimates the cost before and after, and migrates them with your approval.

• Drex for decisions about text: pick a label (drex_choice), answer yes or no (drex_noul), rate on a scale (drex_score), with calibrated probabilities. drex-v2.0 is $0.06 per million input tokens; output is free.
• NDI for files: parse, split, classify, extract (with citations) and ground, billed in credits per page.

Privacy: the scan runs locally. The MCP server makes no network calls and no code is sent to nace. Your coding agent reads the code with its own model. nace is only called when your migrated code runs.

Install

From a local clone:

claude --plugin-dir ~/nace-migration-agent

From GitHub:

/plugin marketplace add saruar-dev/nace-migration-agent
/plugin install nace-migrate@nace
/reload-plugins

Then, in any project:

/nace-migrate:evaluate

The report

nace-report.md in the project root has:

• a summary: files scanned, sites for Drex, sites for NDI, calls that stay on the LLM, and the estimated cost of 1,000 runs of each site today and with nace;
• the architecture overview;
• every Drex and NDI site with its location, confidence, reason and cost line;
• the calls that stay on the LLM, and why;
• split-up plans for calls that do several jobs;
• the nace API reference and setup.

Costs are estimates from token and page counts and a dated price list (src/tools/pricing.ts). A model that is not on the list is reported as "not estimated". Each NDI tool has its own price; tools without one are shown in credits. To see dollars, set the per-tool prices the console's Models & pricing page lists, in USD per 1,000 pages (per 1,000 targets for ground):

export NACE_NDI_PRICES="parse=…,split=…,classify=…,extract=…,ground=…"

MCP tools

Tool	What it does
get_ai_detection_patterns	grep patterns for LLM providers, raw HTTP LLM calls and document pipelines
get_integration_template	before/after code with nace-sdk for each of the eight types
generate_migration_plan	builds the report and does the cost arithmetic
save_migration_report	writes nace-report.md to the project root

Development

npm install
npm test             # unit and server tests
npm run typecheck
npm run bundle       # rebuilds dist/index.js; commit it with any src change
NACE_API_KEY=nace_sk_... npm run live-check   # runs every after_snippet against the live API

Credits

Forked from scaledown-team/SLM_Agent (MIT). See LICENSE.