MigraDiff

v1.4.0 Feature

This release adds 4 notable features for engineering teams evaluating rollout.

Published 2d Relational Databases

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Summary

AI summary

Four optional AI-powered flags added: explain, rollback, advise, and generate migrations from natural language.

Changes in this release

Type	Severity	Summary	CVE
Security	High	Hard‑refuses bulk‑destructive requests in --generate mode before any API call Hard‑refuses bulk‑destructive requests in --generate mode before any API call Source: llm_adapter@2026-06-02 Confidence: high	—
Feature
Feature	Low	Adds --explain flag for plain-English migration explanation Adds --explain flag for plain-English migration explanation Source: llm_adapter@2026-06-02 Confidence: high	—
Feature	Low	Adds --rollback flag to generate reversal migrations Adds --rollback flag to generate reversal migrations Source: llm_adapter@2026-06-02 Confidence: high	—
Feature	Low	Adds --advise flag for deterministic AI risk assessment of migrations Adds --advise flag for deterministic AI risk assessment of migrations Source: llm_adapter@2026-06-02 Confidence: high	—
Feature	Low	Adds --generate flag to create migrations from plain‑English descriptions using live schema Adds --generate flag to create migrations from plain‑English descriptions using live schema Source: llm_adapter@2026-06-02 Confidence: high	—
Feature	Low	Marks all AI output as AI‑generated with temperature 0 for determinism Marks all AI output as AI‑generated with temperature 0 for determinism Source: llm_adapter@2026-06-02 Confidence: high	—
Dependency	Low	Requires Anthropic API key; install migradiff[ai] for AI features Requires Anthropic API key; install migradiff[ai] for AI features Source: llm_adapter@2026-06-02 Confidence: high	—
Bugfix	Medium	Soft‑warns and flags individual destructive operations in --generate mode Soft‑warns and flags individual destructive operations in --generate mode Source: llm_adapter@2026-06-02 Confidence: high	—

Full changelog

MigraDiff v1.4.0 turns the PostgreSQL schema-diff tool into a complete
AI-powered migration assistant. Four schema-aware AI flags, all optional —
the core diff engine stays dependency-free.

Added

--explain — plain-English explanation of any migration
--rollback — generates a reversal migration for a given diff
--advise — deterministic + AI risk assessment of a migration
--generate — writes a migration from a plain-English description,
using your real table names and column types from a
live connection or schema file

Safety

--generate hard-refuses bulk-destructive requests ("drop all",
"wipe", etc.) before any API call is made
Soft-warns and flags individual destructive operations
All AI output is marked as AI-generated; temperature 0 for determinism
--generate is combinable with --advise for immediate risk feedback

175 tests passing. AI features require an Anthropic API key: