Skip to content
anlyon.devby Anlyon

Open Natural Gas: Georgia natural gas rates

org.opennaturalgas/open-natural-gasopennaturalgas.orgstreamable-httpv1.0.0Scanned

Compare Georgia natural gas marketers' PSC-filed rates, profiles and rate history since 2019.

3 tools: 1 do something that can't be undone, 1 change things and 1 only read.

Tools: 0 delete, 1 irreversible, 1 write, 1 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 1
  • 1 finding

Anlyon alternative

2 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →
Compare with similar serversMarkdownJSONReport this listing

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

3 tools

Can't be undone 1Claude Code: ask
  • rate_historyUse this when someone asks how Georgia natural gas rates have changed over time, whether gas prices in Georgia are going up or down, what gas cost last winter or in a past year, or…Can send data out1 finding

    Why it is in this group

    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • outboundThe input takes a destination (input.to): what the tool writes goes there.

    Findings

    • Warn

      The server marks "rate_history" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Use this when someone asks how Georgia natural gas rates have changed over time, whether gas prices in Georgia are going up or down, what gas cost last winter or in a past year, or how one marketer's price has moved. Returns month-by-month cheapest and median estimated annual cost for one plan type (fixed = standard 12-month) across the PSC filings Open Natural Gas has published since January 2019, optionally for one marketer. Months that were withheld by the data gate are listed, not skipped silently. Do not use for this month's prices or ranking (use compare_rates), forecasts of future rates, electricity, Atmos Energy or city/municipal gas systems, other states, or wholesale/Henry Hub prices.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
    • destructiveHint: false
    • idempotentHint: true
Changes things 1Claude Code: ask
  • marketer_profileUse this when someone asks about one Georgia natural gas marketer by name: its reviews or Google rating, PSC complaints, current plans and rates, contract terms such as term length…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Use this when someone asks about one Georgia natural gas marketer by name: its reviews or Google rating, PSC complaints, current plans and rates, contract terms such as term length and early termination fee, or its promo codes and advertised deals (for example, is this gas marketer any good, or how many complaints does it have). Returns current filed plans and verified advertised deals with promo codes, conditions and evidence, PSC complaint counts (24 months) and Google rating for one Georgia natural gas marketer, by name. Counts are shown as published; they are not scored or combined. Report the facts and let the user decide: do not give an overall verdict, grade or recommendation about the marketer, and do not treat rank or price as a measure of quality. Do not use for ranking or comparing several marketers (use compare_rates), electricity providers, Atlanta Gas Light itself (the delivery company, not a marketer), Atmos Energy or city/municipal gas systems, or companies outside Georgia.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
    • destructiveHint: false
    • idempotentHint: true
Only reads 1Show 1 read-only tool
  • compare_ratesUse this when someone asks for the cheapest natural gas in Georgia, Georgia natural gas rates this month, to compare Georgia gas marketers, whether to switch gas marketers, what th…No findings

    Why it is in this group

    • The name "compare_rates" says "compare": a word for reading.
    Description, as the server wrote it
    Use this when someone asks for the cheapest natural gas in Georgia, Georgia natural gas rates this month, to compare Georgia gas marketers, whether to switch gas marketers, what they would pay a year at a given usage (for example, what would I pay at 900 therms), or about current promo codes and advertised deals. Covers residential customers on Atlanta Gas Light's system. Ranks every Georgia natural gas marketer's current plans of one type by estimated annual cost, from the Georgia PSC's monthly filings. Cost = rate x therms + 12 x sign-up service charge + Atlanta Gas Light base charge. Rows the data gate refused to rank are returned unranked with the reason. Also returns current verified advertised deals across all terms, including promo codes, conditions and evidence. Present these separately alongside filed rates; do not call the PSC winner cheapest overall without comparing available advertised annual costs and terms. Read-only; does not enroll anyone. Do not use for electricity, commercial or business gas accounts, Atmos Energy or city/municipal gas systems, PSC-set Regulated Provider rates, other states, or wholesale/Henry Hub prices.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
    • destructiveHint: false
    • idempotentHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out1
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnrate_history

    The server marks "rate_history" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.

    What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http open-natural-gas https://mcp.opennaturalgas.org/mcp
claude mcp add --transport http open-natural-gas https://mcp.opennaturalgas.org/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__open-natural-gas__compare_rates"
    ],
    "ask": [
      "mcp__open-natural-gas__marketer_profile",
      "mcp__open-natural-gas__rate_history"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as open-natural-gas. Review it before you use it.

Capability tags behind 1 rule
  • mcp__open-natural-gas__rate_history outbound

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/org.opennaturalgas/open-natural-gas/verify?hash=f0467dc9ef2f9f8ffec5c6f888e5daafaeca8e6fc4e2d76cf855c0ebe8b59647" | jq -e '.changed == false'

Pinned hash f0467dc9ef2f, from Oct 29, 2026, 22:19 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/org.opennaturalgas/open-natural-gas/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

anlyon.dev badge for org.opennaturalgas/open-natural-gas
[![anlyon.dev](https://anlyon.dev/badge/org.opennaturalgas/open-natural-gas.svg)](https://anlyon.dev/servers/org.opennaturalgas/open-natural-gas)

Source: MCP Registry. Synced Oct 29, 2026, 22:19 UTC.