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Application Programming Interface

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Xero's Reference field stops returning invoice numbers on July 13 — and reconciliation won't notice

Xero's Reference field stops returning invoice numbers on July 13 — and reconciliation won't notice

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4 min read
Rate Limiting Without User Accounts — Strategies for Anonymous APIs

Rate Limiting Without User Accounts — Strategies for Anonymous APIs

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5 min read
Building a Clean and Maintainable API Layer in SaaS Platforms

Building a Clean and Maintainable API Layer in SaaS Platforms

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1 min read
Why Idempotency Is Critical in Modern SaaS Architectures

Why Idempotency Is Critical in Modern SaaS Architectures

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1 min read
Designing a Reliable Sync Engine for Multi‑Channel SaaS Platforms

Designing a Reliable Sync Engine for Multi‑Channel SaaS Platforms

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1 min read
The Wildberries API in English: How to Get Products, Prices and Reviews as JSON

The Wildberries API in English: How to Get Products, Prices and Reviews as JSON

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13 min read
I Built a Free Currency Converter API — No API Key, No Signup

I Built a Free Currency Converter API — No API Key, No Signup

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4 min read
Ingest invoices and receipts into an agent mailbox

Ingest invoices and receipts into an agent mailbox

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10 min read
NestJS and the Discipline It Takes to Never Let a Bank's Numbers Lie to You

NestJS and the Discipline It Takes to Never Let a Bank's Numbers Lie to You

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4 min read
We Spent Months Cleaning SEC EDGAR 13F Data So You Don't Have To

We Spent Months Cleaning SEC EDGAR 13F Data So You Don't Have To

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3 min read
The 40% productivity gain came with an invoice. Nobody read it

The 40% productivity gain came with an invoice. Nobody read it

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6 min read
What a Bank's Payment Flow Actually Needs Underneath, and Why NestJS Was Built for Exactly That

What a Bank's Payment Flow Actually Needs Underneath, and Why NestJS Was Built for Exactly That

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4 min read
The Version That Broke Everything

The Version That Broke Everything

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8 min read
Government Open-Data APIs: Every Guess I Made Was Wrong Until I Probed It Live

Government Open-Data APIs: Every Guess I Made Was Wrong Until I Probed It Live

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7 min read
Embed a Historical Exchange Rate Widget in Any Blog or Dashboard

Embed a Historical Exchange Rate Widget in Any Blog or Dashboard

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2 min read
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