omiss-mcp

MCP server for OMISS, the Old Man International Sideband Society: the net schedule, OMISS nets on the air now, member lookup, past nets and who checked in, the Statehood schedule, officers, awards and net statistics, through any MCP-compatible AI assistant.

Data from omiss.net's public pages; nets on the air from NetLogger. Part of the qso-graph project. No login or API key needed.

Install

uvx omiss-mcp            # run it; nothing to install

Tools

Tool	Description	Key Parameters
omiss_net_schedule	Every net's band, UTC time, frequency, days, band coordinator and next run; holiday dates	—
omiss_nets_on_air	OMISS nets on the air now, from NetLogger, each matched to the net schedule	—
omiss_member_lookup	One member: OM number, call, name, status, grid, state, county, last check-in	callsign or om_number
omiss_checkin_history	Past nets, newest first, optionally only a member's, a band's or a date's	callsign, om_number, band, date, net_control
omiss_net_checkins	One past net: net control, relays, notes, and the check-in list	net_id
omiss_statehood_schedule	40m net dates and their free-call states, and the next one	—
omiss_officers	Officers, band coordinators, committees, appointees, past presidents	—
omiss_awards	The awards, with the IDs the other award tools take	—
omiss_award_rules	An award's rules, or every award's summary	award_id
omiss_award_recipients	Who holds an award, newest first, or check one member	award_id, callsign, om_number
omiss_net_statistics	Nets per band, last net per band, top check-ins and net controls, last check-in by state	state, top
omiss_eligibility	For a list of callsigns (a net's check-ins): member or not, OM number, silent key, and the military, first responder and state capital rosters	callsigns
omiss_set_callsign	Save your callsign, for omiss_nets_on_air (asked once)	callsign
get_version_info	Service version + upstream spec version (fleet identity attestation)	—

What is OMISS?

OMISS is an amateur-radio society that runs SSB nets on HF, from 10 to 160 meters, every day of the week. Members exchange OM numbers on the nets and work toward the society's awards. Its website publishes the net schedule, the member roster, check-in history for every net, and the award rules and recipients.

Nets Open Early

Net control often opens a net in NetLogger for check-ins well before its listed time (the 40m net has opened 35 minutes early). omiss_net_schedule gives the listed times; omiss_nets_on_air shows whether a net is open now.

Your Callsign

Only omiss_nets_on_air needs it: it asks NetLogger, which is told which station is asking. On first use the assistant asks for your callsign and saves it. You're asked once. The other tools don't need it.

Good Neighbour Policy

omiss.net is a volunteer-run club website, not an API. We read it gently:

Measure	Detail
One request at a time	At most one request every 2 seconds, shared by every copy you run (Claude Desktop, Claude Code, a script) through a locked file in your settings folder.
Response caching	Schedule, officers, Statehood, members and award recipients 24 hours; awards and rules 7 days; history and statistics 1 hour.
Stale answers over errors	When the site is down or busy, the last answer comes back with its age rather than an error.
Back-off	A "too many requests" or "unavailable" answer stops all requests for at least a minute, longer if the site asks.
Request timeout	20-second timeout.
User-Agent header	Every request names this project, so the site's operators can see who is asking.
NetLogger	omiss_nets_on_air keeps to NetLogger's call limits, shared with netlogger-mcp if you run it too.

Security and Privacy

• Every value is checked before it is sent: callsigns, OM numbers, bands from a fixed list, YYYY, YYYY-MM or YYYY-MM-DD dates, numeric net IDs, and award IDs from the site's own list. Free text is never sent to omiss.net.
• No postal addresses or email addresses are ever returned, even where a page prints one.
• Members are looked up one at a time, by callsign or OM number. There's no search by state, county or grid, and no roster download.

Quick Start

Configure your MCP client

omiss-mcp works with any MCP-compatible client. Add the server config and restart. The tools appear automatically.

Claude Desktop

Add to claude_desktop_config.json (~/Library/Application Support/Claude/ on macOS, %APPDATA%\Claude\ on Windows):

{
  "mcpServers": {
    "omiss": {
      "command": "uvx",
      "args": ["omiss-mcp"]
    }
  }
}

Claude Code

Add to .claude/settings.json:

{
  "mcpServers": {
    "omiss": {
      "command": "uvx",
      "args": ["omiss-mcp"]
    }
  }
}

ChatGPT Desktop

{
  "mcpServers": {
    "omiss": {
      "command": "uvx",
      "args": ["omiss-mcp"]
    }
  }
}

Cursor

Add to .cursor/mcp.json (project-level) or ~/.cursor/mcp.json (global):

{
  "mcpServers": {
    "omiss": {
      "command": "uvx",
      "args": ["omiss-mcp"]
    }
  }
}

VS Code / GitHub Copilot

Add to .vscode/mcp.json in your workspace:

{
  "servers": {
    "omiss": {
      "command": "uvx",
      "args": ["omiss-mcp"]
    }
  }
}

Gemini CLI

Add to ~/.gemini/settings.json (global) or .gemini/settings.json (project):

{
  "mcpServers": {
    "omiss": {
      "command": "uvx",
      "args": ["omiss-mcp"]
    }
  }
}

Ask questions

"When is the OMISS 40m net, and on what frequency?"

"Is KI7MT an OMISS member? What's their OM number?"

"Which OMISS nets are on the air right now?"

"Which nets did OM 7212 check in to this year?"

"Who checked in to last night's 80m net?"

"What are the free-call states on the next 40m Statehood net?"

"What does the Alphabet Soup award require, and have I earned it?"

"Who ran the most OMISS nets as net control in the last 90 days?"

As a Python Library

The same code works without an AI, with the same spacing and cache:

from omiss_mcp.omiss import OmissSource

om = OmissSource()
me = om.member_lookup(callsign="KI7MT")["members"][0]
for net in om.checkin_history(om_number_=me["om_number"], date_="2026")["nets"]:
    print(net["time"], net["name"], net["checkin_count"])

Apps can name themselves, using ADIF's PROGRAMID and PROGRAMVERSION: OmissSource(program_id="MyLogger", program_version="1.0").

Testing Without Network

OMISS_MCP_MOCK=1 omiss-mcp

MCP Inspector

omiss-mcp --transport streamable-http --port 8015

Development

git clone https://github.com/qso-graph/omiss-mcp.git
cd omiss-mcp
uv sync --group dev
uv run pytest

License

GPL-3.0-or-later