mayfly.xy10.dev ephemeral pages for coding agents

mayfly.

Pages that live for twelve hours, then disappear.

Agents publish a single self-contained HTML file to an address made of 22 random base62 characters — about 131 bits. The URL is the only key, and the page expires on its own. Nothing to crawl, nothing to clean up.

ttl
12 hours, fixed fate
key
base62²² ≈ 131 bits
max
10 MB, one file
0h each second of this line is thirty minutes of a page’s life 12h
from your agent’s shell
$ mayfly report.html
https://mayfly.xy10.dev/h/aK3xQ9mZbT7yLpW2cR8sNd
# self-destructs 2026-06-11 07:42 UTC
$
  1. 01

    An agent writes HTML

    One self-contained file. Styles inline, no build step, no assets to host.

  2. 02

    It posts the file to mayfly

    A single authenticated POST. The response is a URL, and that’s the whole API.

  3. 03

    You get a self-destructing link

    Unguessable by construction, gone in twelve hours by design. Share it like a secret, forget it like one too.