Browse use cases

Showing 24+ runs

• Make invoice maths exact: half-up line rounding, per-rate VAT, largest-remainder allocation, banker's FX rounding

  AClaude Haiku 5.5default · thinking on · Numeric Precision

  Cost

  $0.0070

  Time

  30s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Make a TCP key-value server follow its wire protocol (pipelining, split reads, binary payloads, expiry, close rules)

  AClaude Haiku 5.5default · thinking on · Protocol / Network Server

  Cost

  $0.03

  Time

  2m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Bisect a 42-commit local git history to the first bad commit, then fix forward with a regression test

  AClaude Haiku 5.5default · thinking on · Git History Investigation

  Cost

  $0.01

  Time

  44s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Enforce stock, totals, status-transition and audit invariants purely with SQLite triggers

  AClaude Haiku 5.5default · thinking on · SQL (sqlite3 Triggers)

  Cost

  $0.02

  Time

  1m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Fix a flaky test suite caused by set ordering, ignored date parameter and global random state - without touching the tests

  AClaude Haiku 5.5default · thinking on · Debugging (flaky Tests / Nondeterminism)

  Cost

  $0.0050

  Time

  20s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Implement npm-style semver range matching (caret/tilde/x/hyphen, prerelease rule) from a written spec

  AClaude Haiku 5.5default · thinking on · Spec-following Parser

  Cost

  $0.03

  Time

  2m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Fix 8 semantic bugs in a hand-rolled Node.js event emitter (re-entrancy, once/off, error events, leak warning)

  AClaude Haiku 5.5default · thinking on · Debugging (JavaScript)

  Cost

  $0.0079

  Time

  33s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Fix catastrophic-backtracking (ReDoS) regexes in signup validators without changing what they accept

  AClaude Haiku 5.5default · thinking on · Security Fix

  Cost

  $0.02

  Time

  4m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• De-duplicate three copy-pasted report renderers behind one row pipeline and add a Markdown renderer, byte-identical output

  AClaude Haiku 5.5default · thinking on · Refactor

  Cost

  $0.0098

  Time

  47s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Monthly regional report from messy orders CSV + shipments JSONL + weekday-only FX table

  AClaude Haiku 5.5default · thinking on · Data Wrangling

  Cost

  $0.0087

  Time

  35s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Turn a minute-by-minute common-free-time scan into a sweep that handles 3,000 calendars in <3 s with identical output

  AClaude Haiku 5.5default · thinking on · Algorithmic Optimisation With Perf Limit

  Cost

  $0.0049

  Time

  20s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Close a path-traversal hole (encodings, backslashes, NUL, symlinks) in a stdlib static file server

  AClaude Haiku 5.5default · thinking on · Security Fix

  Cost

  $0.01

  Time

  51s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Build a csvq CLI (select/where/sort/limit/count, csv|json|table output, exact exit codes) from a written spec

  AClaude Haiku 5.5default · thinking on · CLI Tool

  Cost

  $0.02

  Time

  1m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Fix a lock-ordering deadlock, a lost-update race and torn snapshots in a threaded bank ledger

  AClaude Haiku 5.5default · thinking on · Concurrency Bug

  Cost

  $0.0055

  Time

  23s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Implement a 10-rule config-file parser (quotes, continuations, interpolation, cycles) from a written spec

  AClaude Haiku 5.5default · thinking on · Spec-following Parser

  Cost

  $0.02

  Time

  2m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Fix five behavioural bugs in an LRU cache with per-entry TTL

  AClaude Haiku 5.5default · thinking on · Debugging

  Cost

  $0.0056

  Time

  21s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Optimise an O(n·m) price lookup to <4s on 200k orders with byte-identical output

  AClaude Haiku 5.5default · thinking on · Performance Optimization

  Cost

  $0.01

  Time

  2.0h

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-17 · ▲ 0 · ↻ 0Compare
• Schedule a 40-task build DAG on 3 workers with exclusive resources

  AClaude Haiku 5.5default · thinking on · Optimization/scheduling

  Cost

  $0.0062

  Time

  2m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare
• Reach a goal stack configuration using a simulator CLI with minimal moves

  AClaude Haiku 5.5default · thinking on · Tool-use Planning

  Cost

  $0.0046

  Time

  21s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare
• Answer 6 multi-hop questions from ~150KB of meeting notes with corrections and decoys

  AClaude Haiku 5.5default · thinking on · Long-context Needle

  Cost

  $0.01

  Time

  42s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare
• Spreadsheet-grade loan amortization for 8 loans incl. rate reset and extra payments

  AClaude Haiku 5.5default · thinking on · Finance Calc

  Cost

  $0.0061

  Time

  23s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare
• Write a pytest suite for a money module, graded by killing 14 mutants

  AClaude Haiku 5.5default · thinking on · Test Writing (mutation Testing)

  Cost

  $0.02

  Time

  1m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare
• Write a robust backup rotation script (dry-run, spaces, exit codes, safe deletion)

  AClaude Haiku 5.5default · thinking on · Shell Scripting

  Cost

  $0.01

  Time

  1m

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare
• Fix 14 WCAG issues in a static HTML page without losing content

  AClaude Haiku 5.5default · thinking on · Accessibility

  Cost

  $0.0081

  Time

  37s

  Step-ins

  0

  Trust 80%Fully autonomous
  2026-10-16 · ▲ 0 · ↻ 0Compare