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News
Controlling AI API Spend in a Next.js 15 Micro-SaaS with Cordis
10+ hour, 11+ min ago (529+ words) At 3:17 AM on a Sunday, your credit card gets charged $1,400 because a mobile user tapped "Generate" four times on a flaky cellular connection. The browser timed out and retried; your serverless handler caught each severed TCP socket and spawned another…...
Model Vendor Routing Constraints: A Prepaid API Balance Guard in Node.js
10+ hour, 55+ min ago (711+ words) The constraint that decides this one isn't cost and it isn't benchmark quality. It's that the account funding the calls is prepaid, the batch runs at 03:00, and nobody is awake to approve a fallback. Our storefront regenerates product copy and…...
Redis Rate Limits for LLM API Keys and Tenant Quotas
22+ hour, 41+ min ago (822+ words) This post was created with AI assistance and reviewed for accuracy before publishing. Rate limiting a normal API protects your servers. Rate limiting an LLM API protects your bank account. The difference matters, because it changes what you are counting…...
What to Do When an API Has Too Many Endpoints for One MCP Server
23+ hour, 32+ min ago (953+ words) Large APIs are where MCP design gets interesting. If your API has 15 endpoints, you can review each one by hand and decide which operations should become tools. If your API has 300 endpoints, exposing everything creates a different problem: the MCP…...
SCIM Deprovisioning in Multi-Tenant SaaS: What Should Actually Be Deleted?
4+ day, 3+ hour ago (816+ words) An employee leaves Acme, so Acme’s identity provider sends your SaaS application a SCIM deprovisioning request. The same user is still an administrator in Beta. Your application should remove the access controlled by Acme and leave Beta alone. In multi-tenant…...
Multi-Provider LLM Router, or How I Got Tired of Forgetting Which API Format I Had To Use
4+ day, 8+ hour ago (177+ words) If you've ever built an application that integrates with multiple LLM providers (Anthropic, Google, OpenAI, DeepSeek), you already know the pain: I recently extracted the core streaming router from my platform into an open-source FastAPI template. Here is how it…...
Ten questions to answer before you route production traffic through someone else's LLM endpoint
6+ day, 16+ hour ago (1080+ words) Every LLM endpoint's landing page says fast, reliable, compatible, secure. Those words are free. This is the list of questions that aren't free — the ones where the answer takes a vendor real work to be able to give, and where…...
Building a Zero-Dependency Validation API on Cloudflare Workers
1+ week, 5+ hour ago (236+ words) I wanted a small side project that could actually run itself once shipped — no cron jobs to babysit, no upstream API to go down at 3am and take my uptime with it. That constraint led somewhere specific: an API that validates…...
How to route LLM requests by task difficulty (a practical guide to cutting API spend without losing quality)
1+ week, 2+ day ago (618+ words) If you run language models in production, there is a good chance your bill is dominated by one frontier model that became the default because it was the model the demo was built on. Routing by task difficulty is the…...
When the Token Well Runs Dry: A Degradation State Machine for LLM Services
1+ week, 3+ day ago (415+ words) The alert fires at 3:14 AM. Your LLM service returns 500s. The free quota is gone. You check the dashboard. 10,000,000 tokens. Zero remaining. Most guides teach prevention. Budgets. Ledgers. Pre-checks. This one teaches survival. What happens after the quota dies? The answer…...