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Verifications

Define verification checks that automatically validate run outputs. Browse the verification catalog to see all available checks, and review per-run results to catch regressions before merging. Verifications run after each workflow completes and report pass/fail status, so you get a quality gate between “the agent finished” and “the code is ready.”

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Retrospectives

After each run, an LLM-powered retro agent analyzes what happened and generates a structured summary — what worked, what didn’t, timing breakdown, cost, and improvement suggestions. The retro prints inline in your terminal after the run completes, rendered as Markdown. 
fabro run start my-workflow.fabro
# ... run executes ...
# === Retro ===
# The run completed in 4m 32s across 6 stages...
Previously, understanding what happened in a run meant reading through raw logs. Now you get a concise post-mortem automatically.

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Insights SQL workbench

Query your run data directly with SQL to answer questions like “which workflows fail most?” or “what’s the average cost per stage?” The web app includes a query editor, template library, and execution history.

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Parallel git branching

Workflow branches now execute in isolated git worktrees, so parallel stages can edit files simultaneously without conflicts. At fan-in nodes, changes merge cleanly back together. Previously, parallel stages sharing a single worktree would overwrite each other’s changes. Worktree isolation makes parallel execution reliable.

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More

  • Fixed non-transient infrastructure failures (like invalid API keys) triggering retries instead of failing immediately
  • Fixed UTF-8 string slicing panics when truncating multi-byte characters in progress output
  • Interactive SVG graph rendering with animated nodes showing which stage is currently executing
  • Failure signatures and circuit breakers detect deterministic failure cycles (like the same syntax error on every retry) and short-circuit them, saving tokens and time
  • Stall watchdog detects hung pipeline handlers and reports them instead of silently blocking
  • Run data, sessions, and verifications stored in SQLite for fast querying and the Insights feature
  • Full light mode support with a theme toggle in the web app
  • File-based structured tracing across all crates controlled by FABRO_LOG