Geofeed Tuner

Name: Geofeed Tuner
Author: github

github/awesome-copilot

Generate and validate RFC 8805-style geofeed CSV rows with correct ISO 3166-1 country and subdivision codes for IP ranges you announce.

Overview

geofeed-tuner is an agent skill for the Operate phase that formats and tunes IP geofeed CSV entries with valid ISO 3166-1 geography codes.

Install

npx skills add https://github.com/github/awesome-copilot --skill geofeed-tuner

What is this skill?

Emits geofeed lines: prefix, ISO country, optional region, city, postal fields
Aligns entries with ISO 3166-1 alpha-2 country list including flags for human review
Documents that small city-states may omit subdivision codes when appropriate
Supports both IPv4 CIDR and IPv6 prefix notation in comma-separated rows
Helps agents avoid inventing invalid region codes when tuning provider geofeeds

Compatible agents: Claude Code, Cursor, Codex, Windsurf

Adoption & trust: 1.1k installs on skills.sh; 34.6k GitHub stars; 1/3 security scanners passed (skills.sh audits).

What problem does it solve?

Your IP ranges moved regions but your geofeed still lists the wrong country or invalid subdivision codes and providers reject the file.

Who is it for?

Indie operators announcing modest IPv4/IPv6 blocks who must keep geolocation CSVs accurate without a dedicated NetEng hire.

Skip if: Builders with no BGP or static IP announcements, or teams that outsource all network policy to a hyperscaler default geolocation with no custom geofeed.

When should I use this skill?

User mentions geofeed, IP geolocation CSV, ISO country codes for prefixes, or tuning provider geolocation files.

What do I get? / Deliverables

You get a validated-style geofeed fragment with consistent CIDR rows and ISO codes ready to merge into your published geofeed URL or ticket attachment.

Geofeed CSV snippet with corrected geography fields
Commented diff or checklist of prefixes updated per region

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Journey fit

Primary fit

OperateInfrastructure & cost

Operate is the canonical shelf because geofeed publishing is ongoing network hygiene after you ship services that announce public prefixes. Infra matches BGP announcements, geolocation accuracy for CDN edges, and keeping provider geofeed files synchronized with reality.

Also useful

ShipCI/CD & deploy

How it compares

Skill package for geofeed line editing—not a full IPAM system or live BGP optimizer.

Common Questions / FAQ

Who is geofeed-tuner for?

Solo founders and small teams who manage public IP prefixes and need agent help drafting geofeed updates without memorizing every ISO subdivision rule.

When should I use geofeed-tuner?

Use it in Operate / infra when updating geofeeds after deploys, region changes, or new prefixes—typically after Ship, not during Idea market research.

Is geofeed-tuner safe to install?

It guides text formatting for network metadata; confirm changes against your IRR/ROA and provider docs, and check the Security Audits panel on this Prism page before trusting automated edits.

SKILL.md

READMESKILL.md - Geofeed Tuner

202.125.100.144/28,ID,,Jakarta,
2605:59c8:2700::/40,CA,CA-QC,"Montreal"
150.228.170.0/24,SG,SG-01,Singapore,
# It's OK for small city states to leave state ISO2 code unspecified
2406:2d40:8100::/42,SG,SG,Singapore,

{
  "3166-1": [
    {
      "alpha_2": "AD",
      "name": "Andorra",
      "flag": "🇦🇩"
    },
    {
      "alpha_2": "AE",
      "name": "United Arab Emirates",
      "flag": "🇦🇪"
    },
    {
      "alpha_2": "AF",
      "name": "Afghanistan",
      "flag": "🇦🇫"
    },
    {
      "alpha_2": "AG",
      "name": "Antigua and Barbuda",
      "flag": "🇦🇬"
    },
    {
      "alpha_2": "AI",
      "name": "Anguilla",
      "flag": "🇦🇮"
    },
    {
      "alpha_2": "AL",
      "name": "Albania",
      "flag": "🇦🇱"
    },
    {
      "alpha_2": "AM",
      "name": "Armenia",
      "flag": "🇦🇲"
    },
    {
      "alpha_2": "AO",
      "name": "Angola",
      "flag": "🇦🇴"
    },
    {
      "alpha_2": "AQ",
      "name": "Antarctica",
      "flag": "🇦🇶"
    },
    {
      "alpha_2": "AR",
      "name": "Argentina",
      "flag": "🇦🇷"
    },
    {
      "alpha_2": "AS",
      "name": "American Samoa",
      "flag": "🇦🇸"
    },
    {
      "alpha_2": "AT",
      "name": "Austria",
      "flag": "🇦🇹"
    },
    {
      "alpha_2": "AU",
      "name": "Australia",
      "flag": "🇦🇺"
    },
    {
      "alpha_2": "AW",
      "name": "Aruba",
      "flag": "🇦🇼"
    },
    {
      "alpha_2": "AX",
      "name": "Åland Islands",
      "flag": "🇦🇽"
    },
    {
      "alpha_2": "AZ",
      "name": "Azerbaijan",
      "flag": "🇦🇿"
    },
    {
      "alpha_2": "BA",
      "name": "Bosnia and Herzegovina",
      "flag": "🇧🇦"
    },
    {
      "alpha_2": "BB",
      "name": "Barbados",
      "flag": "🇧🇧"
    },
    {
      "alpha_2": "BD",
      "name": "Bangladesh",
      "flag": "🇧🇩"
    },
    {
      "alpha_2": "BE",
      "name": "Belgium",
      "flag": "🇧🇪"
    },
    {
      "alpha_2": "BF",
      "name": "Burkina Faso",
      "flag": "🇧🇫"
    },
    {
      "alpha_2": "BG",
      "name": "Bulgaria",
      "flag": "🇧🇬"
    },
    {
      "alpha_2": "BH",
      "name": "Bahrain",
      "flag": "🇧🇭"
    },
    {
      "alpha_2": "BI",
      "name": "Burundi",
      "flag": "🇧🇮"
    },
    {
      "alpha_2": "BJ",
      "name": "Benin",
      "flag": "🇧🇯"
    },
    {
      "alpha_2": "BL",
      "name": "Saint Barthélemy",
      "flag": "🇧🇱"
    },
    {
      "alpha_2": "BM",
      "name": "Bermuda",
      "flag": "🇧🇲"
    },
    {
      "alpha_2": "BN",
      "name": "Brunei Darussalam",
      "flag": "🇧🇳"
    },
    {
      "alpha_2": "BO",
      "name": "Bolivia, Plurinational State of",
      "flag": "🇧🇴"
    },
    {
      "alpha_2": "BQ",
      "name": "Bonaire, Sint Eustatius and Saba",
      "flag": "🇧🇶"
    },
    {
      "alpha_2": "BR",
      "name": "Brazil",
      "flag": "🇧🇷"
    },
    {
      "alpha_2": "BS",
      "name": "Bahamas",
      "flag": "🇧🇸"
    },
    {
      "alpha_2": "BT",
      "name": "Bhutan",
      "flag": "🇧🇹"
    },
    {
      "alpha_2": "BV",
      "name": "Bouvet Island",
      "flag": "🇧🇻"
    },
    {
      "alpha_2": "BW",
      "name": "Botswana",
      "flag": "🇧🇼"
    },
    {
      "alpha_2": "BY",
      "name": "Belarus",
      "flag": "🇧🇾"
    },
    {
      "alpha_2": "BZ",
      "name": "Belize",
      "flag": "🇧🇿"
    },
    {
      "alpha_2": "CA",
      "name": "Canada",
      "flag": "🇨🇦"
    },
    {
      "alpha_2": "CC",
      "name": "Cocos (Keeling) Islands",
      "flag": "🇨🇨"
    },
    {
      "alpha_2": "CD",
      "name": "Congo, The Democratic Republic of the",
      "flag": "🇨🇩"
    },
    {
      "alpha_2": "CF",
      "name": "Central African Republic",
      "flag": "🇨🇫"
    },
    {
      "alpha_2": "CG",
      "name": "Congo",
      "flag": "🇨🇬"
    },
    {
      "alpha_2": "CH",
      "name": "Switzerland",
      "flag": "🇨🇭"
    },
    {
      "alpha_2": "CI",

What is this skill?

Emits geofeed lines: prefix, ISO country, optional region, city, postal fields

Aligns entries with ISO 3166-1 alpha-2 country list including flags for human review

Documents that small city-states may omit subdivision codes when appropriate

Supports both IPv4 CIDR and IPv6 prefix notation in comma-separated rows

Helps agents avoid inventing invalid region codes when tuning provider geofeeds

Compatible agents: Claude Code, Cursor, Codex, Windsurf

Adoption & trust: 1.1k installs on skills.sh; 34.6k GitHub stars; 1/3 security scanners passed (skills.sh audits).

Journey fit

Primary fit

OperateInfrastructure & cost

Also useful

ShipCI/CD & deploy

SKILL.md

READMESKILL.md - Geofeed Tuner

202.125.100.144/28,ID,,Jakarta,
2605:59c8:2700::/40,CA,CA-QC,"Montreal"
150.228.170.0/24,SG,SG-01,Singapore,
# It's OK for small city states to leave state ISO2 code unspecified
2406:2d40:8100::/42,SG,SG,Singapore,

{
  "3166-1": [
    {
      "alpha_2": "AD",
      "name": "Andorra",
      "flag": "🇦🇩"
    },
    {
      "alpha_2": "AE",
      "name": "United Arab Emirates",
      "flag": "🇦🇪"
    },
    {
      "alpha_2": "AF",
      "name": "Afghanistan",
      "flag": "🇦🇫"
    },
    {
      "alpha_2": "AG",
      "name": "Antigua and Barbuda",
      "flag": "🇦🇬"
    },
    {
      "alpha_2": "AI",
      "name": "Anguilla",
      "flag": "🇦🇮"
    },
    {
      "alpha_2": "AL",
      "name": "Albania",
      "flag": "🇦🇱"
    },
    {
      "alpha_2": "AM",
      "name": "Armenia",
      "flag": "🇦🇲"
    },
    {
      "alpha_2": "AO",
      "name": "Angola",
      "flag": "🇦🇴"
    },
    {
      "alpha_2": "AQ",
      "name": "Antarctica",
      "flag": "🇦🇶"
    },
    {
      "alpha_2": "AR",
      "name": "Argentina",
      "flag": "🇦🇷"
    },
    {
      "alpha_2": "AS",
      "name": "American Samoa",
      "flag": "🇦🇸"
    },
    {
      "alpha_2": "AT",
      "name": "Austria",
      "flag": "🇦🇹"
    },
    {
      "alpha_2": "AU",
      "name": "Australia",
      "flag": "🇦🇺"
    },
    {
      "alpha_2": "AW",
      "name": "Aruba",
      "flag": "🇦🇼"
    },
    {
      "alpha_2": "AX",
      "name": "Åland Islands",
      "flag": "🇦🇽"
    },
    {
      "alpha_2": "AZ",
      "name": "Azerbaijan",
      "flag": "🇦🇿"
    },
    {
      "alpha_2": "BA",
      "name": "Bosnia and Herzegovina",
      "flag": "🇧🇦"
    },
    {
      "alpha_2": "BB",
      "name": "Barbados",
      "flag": "🇧🇧"
    },
    {
      "alpha_2": "BD",
      "name": "Bangladesh",
      "flag": "🇧🇩"
    },
    {
      "alpha_2": "BE",
      "name": "Belgium",
      "flag": "🇧🇪"
    },
    {
      "alpha_2": "BF",
      "name": "Burkina Faso",
      "flag": "🇧🇫"
    },
    {
      "alpha_2": "BG",
      "name": "Bulgaria",
      "flag": "🇧🇬"
    },
    {
      "alpha_2": "BH",
      "name": "Bahrain",
      "flag": "🇧🇭"
    },
    {
      "alpha_2": "BI",
      "name": "Burundi",
      "flag": "🇧🇮"
    },
    {
      "alpha_2": "BJ",
      "name": "Benin",
      "flag": "🇧🇯"
    },
    {
      "alpha_2": "BL",
      "name": "Saint Barthélemy",
      "flag": "🇧🇱"
    },
    {
      "alpha_2": "BM",
      "name": "Bermuda",
      "flag": "🇧🇲"
    },
    {
      "alpha_2": "BN",
      "name": "Brunei Darussalam",
      "flag": "🇧🇳"
    },
    {
      "alpha_2": "BO",
      "name": "Bolivia, Plurinational State of",
      "flag": "🇧🇴"
    },
    {
      "alpha_2": "BQ",
      "name": "Bonaire, Sint Eustatius and Saba",
      "flag": "🇧🇶"
    },
    {
      "alpha_2": "BR",
      "name": "Brazil",
      "flag": "🇧🇷"
    },
    {
      "alpha_2": "BS",
      "name": "Bahamas",
      "flag": "🇧🇸"
    },
    {
      "alpha_2": "BT",
      "name": "Bhutan",
      "flag": "🇧🇹"
    },
    {
      "alpha_2": "BV",
      "name": "Bouvet Island",
      "flag": "🇧🇻"
    },
    {
      "alpha_2": "BW",
      "name": "Botswana",
      "flag": "🇧🇼"
    },
    {
      "alpha_2": "BY",
      "name": "Belarus",
      "flag": "🇧🇾"
    },
    {
      "alpha_2": "BZ",
      "name": "Belize",
      "flag": "🇧🇿"
    },
    {
      "alpha_2": "CA",
      "name": "Canada",
      "flag": "🇨🇦"
    },
    {
      "alpha_2": "CC",
      "name": "Cocos (Keeling) Islands",
      "flag": "🇨🇨"
    },
    {
      "alpha_2": "CD",
      "name": "Congo, The Democratic Republic of the",
      "flag": "🇨🇩"
    },
    {
      "alpha_2": "CF",
      "name": "Central African Republic",
      "flag": "🇨🇫"
    },
    {
      "alpha_2": "CG",
      "name": "Congo",
      "flag": "🇨🇬"
    },
    {
      "alpha_2": "CH",
      "name": "Switzerland",
      "flag": "🇨🇭"
    },
    {
      "alpha_2": "CI",

Overview

Install

What is this skill?

What problem does it solve?

Who is it for?

When should I use this skill?

What do I get? / Deliverables

Recommended Skills

Journey fit

Who is geofeed-tuner for?

When should I use geofeed-tuner?

Is geofeed-tuner safe to install?

SKILL.md

This week for builders

Overview

Install

What is this skill?

What problem does it solve?

Who is it for?

When should I use this skill?

What do I get? / Deliverables

Recommended Skills

Journey fit

Who is geofeed-tuner for?

When should I use geofeed-tuner?

Is geofeed-tuner safe to install?

SKILL.md