What is diff-seismograph?
diff-seismograph is a Claude Code mod by ccdwyer that a live braille seismograph of every edit above the prompt, quake alerts for big changes, and a heat treemap of the repo. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | ccdwyer |
| Repository | ccdwyer/diff-seismograph |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Low risk (88/100) |
| Rank | #2,850 of 5,272 Claude Code mods; #1,186 in Interface |
| License | MIT |
| Last commit | 2026-10-02 |
| Hooks | 4 events |
| Sees | every tool call |
| Draws on | AbovePrompt, Pane |
Is diff-seismograph safe to install?
diff-seismograph scores 88/100 on the MCPMods security check: Low risk. Things to review: starts processes outside the sandbox. It passed 7 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.every | |
$.command.register | |
$.fs.stat | reads files |
$.process.run | runs processes |
$.session.cwd | |
$.state.get | |
$.state.set | |
$.ui.blit | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
How do I install diff-seismograph?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/ccdwyer/diff-seismograph claude plugin validate ./diff-seismograph/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/ccdwyer/diff-seismograph && claude --plugin-dir ./diff-seismograph/.
Or ask Claude to set it up
Paste this into Claude Code and it installs diff-seismograph for you:
Install the "diff-seismograph" Claude Code mod from https://github.com/ccdwyer/diff-seismograph. Run claude plugin validate on it first and show me what it can access before you enable it.