Changelog

What's new in SpectrAPI. Every feature, fix, and improvement documented.

Feature

Improvement

Fix

v0.3.0March 10, 2026Latest

Category System & Saved Rules

Introducing saved categories with custom output rules. Define reusable patterns for your data generation needs, paired with enhanced instruction parsing capabilities.

Feature

Added category_id support for saved output rules

Feature

Category management dashboard for creating and editing saved patterns

Feature

Instruction-based data generation with natural language processing

Feature

Locale support (en-US, en-GB, de-DE, fr-FR, ja-JP) via instruction context

Improvement

Improved response consistency — schema validation now runs pre-generation

Improvement

Enhanced nested object support in instruction parsing

Fix

Fixed edge case where instruction parsing could return inconsistent field types

Fix

Resolved intermittent 502 errors on high-concurrency requests with categories

v0.2.0February 18, 2026

Financial Data Patterns & Performance

Enhanced instruction parsing for financial data patterns, plus a major infrastructure upgrade that cuts response times nearly in half.

Feature

Enhanced instruction parsing for financial data patterns

Feature

Support for transaction data, merchant categories, and balance information via instructions

Feature

Pagination support in instruction format (page + limit in request body)

Feature

Rate limit headers (X-RateLimit-Limit, X-RateLimit-Remaining, Retry-After)

Feature

Request IDs in all responses for debugging (meta.request_id)

Improvement

Average latency reduced from 280ms to under 150ms via edge caching layer

Improvement

Vehicle instruction patterns now support dealer info, VIN, and feature lists

Improvement

Property instruction patterns now support agent info and days_on_market

Fix

Fixed instruction-generated prices occasionally returning negative values

Fix

Corrected ZIP code formatting for northeast US addresses in instruction output

v0.1.1February 3, 2026

Stability Patch

Hotfix release addressing authentication edge cases and improving error messages for new users.

Fix

Fixed 500 error when Authorization header included extra whitespace

Fix

Resolved issue where expired test keys returned 500 instead of 401

Improvement

Error responses now include human-readable messages alongside machine codes

Improvement

Improved input validation with descriptive error messages for invalid request bodies

v0.1.0January 25, 2026

Initial Beta Launch

The first public release of SpectrAPI. Instruction-based generation with a single endpoint, REST API with bearer auth, and a free tier to get started.

Feature

Instruction-based data generation via POST /api/v1/generate

Feature

Natural language processing for structured data output

Feature

Support for vehicle, property, and general data patterns via instructions

Feature

REST API with Bearer token authentication

Feature

Consistent JSON envelope response format with data + meta

Feature

Free tier: 1,000 requests/month, 10 req/min rate limit

Feature

Pro tier: 50,000 requests/month, 100 req/min rate limit

Feature

API dashboard for key management and usage monitoring

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