echorune radar MCP server

runemap

A weather radar you can read as text. One HTTP request, no image, no API key, no account. It renders in a terminal, in a prompt, or in a log line -- so a person and a program read the same answer.

Measured: 1.8 KB for a quiet sky, 2.8 KB for a busy one, and 0.4 KB for Reykjavik, where we have no radar and the reply says so in one line instead of drawing an empty grid.

curl echorune.net/taipei

Radar is normally a picture, and a picture is the one thing most LLM agents cannot see. So when an agent asks "is it about to rain on me, and from which direction?", what comes back is a sentence somebody else already summarised, and the two-dimensional structure is gone. A character grid keeps it: where the rain is, how strong it is, and which way it is moving -- about 600 tokens for 48x24.

# Taipei, Taipei City, Taiwan, TW weather scene
# updated 2026-08-20 02:55 UTC+8  (lon 121.52639, lat 25.05306)
now: CLOUDY  26C  humidity 90%  wind 7km/h  precip 0.00mm/h
Rain intensity gradually increases. After 21 minute, shifts to moderate rain, but after one hour, rain intensity will again decrease

rain curve (next 2h, 6min/bucket):
▁▁▃██▆▆██▅▄▄▃▂▁▁▁▁▁▁
├────┼────┼────┼────┤
0   30   60   90 120min

radar: predict 03:00  obs age: 25min stale
~6km/char, [><]=Taipei, Taipei City, Taiwan, TW
                                                
                                                
                                                
                                                
░░                                              
░░░                                             
░░░                                             
░        ░░░░░░░                                
         ░░░░░░░▒▓▒░░                           
       ░░░▒▓▓░░▒▓█▓▓▒░                          
    ░▒▓▒▒░▒▓▓░░▒▓▓▓▓▒░     ░░░░▒                
    ░▓▓▒░░░░░▒▓▒▒▒▒░░    ░░░░░▒▒                
    ░░░░░   ░░▒▒▒░░░░   ><░▒░▒▒░                
             ░░░░░░░▒░░░░░▒▒░░░       ░░░░░░░░░░
              

Frozen sample: Taipei, 2026-08-20 02:55 UTC+8. Deliberately not live -- a pasted "live" reading starts lying six minutes after it is pasted. What freezing protects is the weather, not the format: this sample sat unchanged from 2026-07-29 while the header, the radar line and the legend all moved, so anyone following it would have compared their real answer against fields we no longer print. It is re-frozen when the format changes. Run the curl above for today.

install it as an Agent Skill

If you are an agent, or you run one, you can keep this instead of remembering a URL:

npx skills add https://github.com/eirik-rune/runemap --skill echorune-radar

On a machine with no agent installed -- CI, a container, an agent's own automation -- that command opens an interactive picker and, with no terminal attached, exits 0 having installed nothing. Name the agents and it never asks:

npx skills add https://github.com/eirik-rune/runemap --skill echorune-radar --agent '*' -y

Shortened. The full README is on GitHub.