claude-eta
Claude has no concept of time. claude-eta gives it one.
Claude says "this should take about 2 days." You finish in 12 minutes.
LLMs have zero feedback between what they promise and what actually happens.
claude-eta creates that loop: it times every task, learns your velocity,
and feeds real data back into Claude before it responds.
After 10 tasks of the same type, ETAs appear automatically — calibrated on YOUR project.
How it works
- You type a prompt
- claude-eta classifies it, starts a timer, injects your velocity stats
- Claude works. Tool calls, file ops, errors counted silently.
- Task completes. Real duration recorded. Next estimate improves.
- After 10 tasks of the same type, ETAs appear automatically at the start of Claude's responses.
Eval results
Walk-forward replay over real, single-developer task history.
- p80 coverage at prompt typically lands in the 75–80% target range (target: ~80%, since p80 is by definition the value the real duration should fall at or below 80% of the time).
- MdAPE (median absolute % error) sits in the 70–95% range depending on the evaluator stage (
prompt / first edit / first bash) — expected for a single-user dataset and tightens as task volume grows.
The exact numbers, the per-stage breakdown, and the version they were captured at live in docs/eval-snapshot.md, refreshed at each release. Run /eta eval to compute the same report on your own local task history.
Also catches repair loops
When Claude hits the same error 3+ times, claude-eta detects the pattern and intervenes:
- At 3x: warning injected at the next prompt
- At 5x: blocks and forces a strategy change
The key: it fingerprints error CONTENT, not just count. TDD (different errors each time) won't trigger it.
Also catches hallucinated estimates
When Claude says "2 days" for a 10-minute task, the bullshit detector corrects inline
using your measured project data.
Requirements
- Node.js >= 18
- Claude Code CLI (latest recommended)
- macOS, Linux, Windows (WSL)
Install
Tested with the current Claude Code CLI. The working install flow is:
claude plugin marketplace add mmmprod/claude-eta
claude plugin install claude-eta
In any already-open Claude Code session, run /reload-plugins before trying /eta.
Fallback from a local checkout:
git clone https://github.com/mmmprod/claude-eta.git
cd claude-eta
claude plugin marketplace add ./
claude plugin install claude-eta --scope local
Current Claude Code uses claude plugin install, not claude plugin add.
Update
claude plugin marketplace update claude-eta && claude plugin update claude-eta@claude-eta
Then restart Claude Code or run /reload-plugins.
Uninstall
claude plugin uninstall claude-eta
Local data stays under ${CLAUDE_PLUGIN_DATA} (typically ~/.claude/plugins/data/claude-eta-*/) until you delete it manually.
Commands
