A migration tool that converts older Sigint configuration files into the newer JSON format and creates a project context file.

Use it to migrate project or global Sigint settings, including configurations written as markdown or older version 1 JSON.

It avoids rewriting old configuration by hand and keeps the original files backed up. It can also preview changes before making them.

migrate — Skill by zircote-plugins

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.

agentmods

npx agentmods add skills/zircote-plugins/sigint/migrate

Any agent

npx skills add zircote-plugins/sigint --skill migrate

Clone the repo

git clone --depth 1 https://github.com/zircote-plugins/sigint

Made for: Claude Code, Codex.

Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,498 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5	$0.00070	$0.02498
Opus 5	$0.00035	$0.01249
Sonnet 5	$0.00014	$0.00500
Haiku 4.5	$0.00007	$0.00250

Measured 2d ago against content hash 2a1e23c521ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

migrate 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 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.

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.

skills/migrate/SKILL.md · 301 lines

How it starts

The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sigint Migrate Skill

Migrates legacy sigint configuration to the v2.0 JSON format with per-topic support. Safe to run multiple times (idempotent). Always backs up source files before overwriting.

Structured Data Protocol: JSON file creation MUST follow protocols/STRUCTURED-DATA.md. Use jq via Bash for writing sigint.config.json. Every write MUST be followed by schema validation using schemas/sigint-config.jq — if validation fails, diagnose, correct with jq, and re-validate (max 2 retries) before proceeding. See the Retry-and-Correct protocol in protocols/STRUCTURED-DATA.md.

Arguments

Parse $ARGUMENTS:

--dry-run → dry_run = true — preview what would be written, no files modified
--global → migrate_global = true — also migrate ~/.claude/sigint.local.md (default: project only)

Phase 0: Detect Source Files

Step 0.1: Inventory legacy config files

Check for each (silent, no errors if missing):

project_local_md — ./.claude/sigint.local.md exists
global_local_md — ~/.claude/sigint.local.md exists (relevant only if migrate_global)
project_config_v1 — ./.sigint.config.json exists and its version field is "1.0" (if version is missing or not "1.0", ignore this file and emit: "Skipping .sigint.config.json — version is not 1.0.")
target_exists — ./sigint.config.json exists

Step 0.2: Check for existing v2.0 target

If ./sigint.config.json exists:

Parse it. If version == "2.0":

AskUserQuestion(
  question: "sigint.config.json v2.0 already exists. How would you like to proceed?",
  options: [
    "Merge: add missing topics from legacy config, preserve existing topic customizations",
    "Overwrite: replace entirely with freshly migrated config",
    "Cancel"
  ]
)

Store as merge_mode ("merge", "overwrite", or cancel/exit).

If version != "2.0": treat as overwrite.

Step 0.3: Early exit if nothing to migrate

If no source files found AND no v1.0 target:

Output: "Nothing to migrate. No legacy config files found."
Output: "To create a fresh config, run /sigint:init."
Exit.

Read the full file on GitHub · 301 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

evals/evals.json 9.0 KB

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.

2d ago First seen · 301 lines · 70 tokens per session scan A 2a1e23c521ca

Subscribe to this mod's changes

migrate is a skill published in the GitHub repository zircote-plugins/sigint (20 stars, last pushed 15d ago), licensed MIT. It adds 70 tokens to every session and 2,498 once invoked, about $0.0003 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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