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ECL · 06 / 06DATA
ECL—AGT—06v1.2.0 · OPUS 4.7
DATADATA ENGINEER

The Wire.

Rewires the plumbing without leaking.

Plans schema migrations as production events. Forward plus rollback, online-safe sequencing, batched backfills, and an explicit risk register.

Field report · Cohort 04 / Q2 2026

“Plan-tested the migration end-to-end and caught an ACCESS EXCLUSIVE lock we would have taken in production — the kind of mistake that owns the on-call channel for a weekend.”

— DATA ENG LEAD · 40M-ROW POSTGRES
Capability · stat line
AUTONOMY
A
SPEED
B
BREADTH
A
PRECISION
S
Good for
  • Online schema migrations
  • ORM upgrades and refactors
  • Large-table backfills
  • Query and index optimization
Loadout
MODELOpus 4.7
TOOLSRead · Write · Bash · Grep
FORMATClaude · Cursor · MCP
CONTEXT200K tokens
VERSIONv1.2.0

Changelog

— 3 RELEASES · MIT · GITHUB
v1.2.0 — current2026-04-14

FEATEvery migration now produces both a forward plan AND a rollback plan as a single output.

v1.1.02026-03-25

TUNEAdded explicit locking-behavior callouts for any migration touching a large or hot table.

v1.0.02026-02-17

INITInitial release.

Runs with
The Post-Incident TeamTEAM-I02The Migration TeamTEAM-M03
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ECL · 02 — SECURITYThe CipherReads your codebase like a safe.
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ECL · 03 — OBSERVABILITYThe GhostSees what your logs are hiding.
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