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9 Patterns for Automating Daily Work with Gemini Gems — Turning Custom Instructions Into Real Tools
Built a few Gems but only end up using one or two? You're not alone. Here are nine patterns that share what actually-used Gems have in common, with the custom-instruction shape for each.
Five Design Decisions to Make Before Putting gemini-2.5-pro-latest in Production
Running gemini-2.5-pro-latest in production is more than picking a fast model. Here are the five design decisions — versioning, retry, cost, fallback, observability — that I now resolve before any new service ships.
From Free Tier to First Paying User with the Gemini API — Three Walls Indie Devs Hit
Reaching 'it works' with the Gemini API is easier than ever. Reaching 'someone paid for it' is a different problem entirely. Here are the three non-technical walls indie developers hit before their first paying user — and how to break through each.
Gemini API Temperature Best Practices by Task — Translation, Summarization, Code, Chat, and More
The `temperature` parameter is one of the highest-leverage knobs in the Gemini API, yet most implementations ship with the default. This guide walks through the value I actually use for each task type — translation, summarization, code generation, chat, classification — and explains why.
Gemini Code Assist Agent Mode Not Working — Fixes for VS Code & JetBrains (2026)
Gemini Code Assist agent mode not starting, stalling mid-task, or unable to reference files? This guide walks through the most common causes and fixes for VS Code and JetBrains environments in 2026.
Build an Auto-Documentation Pipeline with Gemini API and GitHub Actions
Tired of outdated docstrings and READMEs? This guide shows you how to build a CI pipeline that uses Gemini API and GitHub Actions to automatically suggest documentation updates on every Pull Request.
Defending Gemini API Responses with Schema Validation — Never Let Unexpected Formats Reach Production
Gemini's structured output is convenient, but in production the day always comes when an unexpected format slips through. This piece walks through layered Zod/Pydantic validation, repair prompts, and graceful degradation — the defense lines I run on my own apps.
Architecting a Multi-Tenant SaaS on Gemini API — Tenant Isolation, Usage Metering, and Runaway Cost Defense in Production
A field-tested blueprint for serving Gemini API to multiple tenants on a single backend — covering tenant isolation choices, per-tenant rate limiting in Redis, request-level usage metering for billing, and runaway-cost defenses.
Tracing Gemini API in Production with OpenTelemetry: See Every Step of a Single Request
After three months of running Gemini API in production, plain logs stop telling you why latency, cost, or failures spike. This guide walks through wrapping Gemini in OpenTelemetry — Python and Node.js code, GenAI semantic conventions, sampling, and Grafana/Datadog wiring — so you can see the full anatomy of every request.
Why Your Gemini Function Calling Schema Gets Rejected with INVALID_ARGUMENT (and How to Fix It)
If you ported a working OpenAI tool definition to Gemini and got hit with 400 INVALID_ARGUMENT, this guide walks through the exact schema rejections, with before-and-after code for each one.
Why Your Gemini API system_instruction Gets Ignored — A 7-Point Checklist by SDK, Model, and Format
You wrote 'always answer in French' in your system_instruction and Gemini cheerfully ignores it. Nine times out of ten this isn't a bug — it's how the instruction was wired in. Here's the 7-point checklist I run by SDK, model, and format, with reproducible code for each fix.
A Blueprint for Growing a Gemini API Niche SaaS to ~$350/Month — Free Tier Graduation, Cost Control, and Stripe Integration
A premium implementation blueprint for taking a Gemini-API-based niche SaaS to roughly $350/month as a solo developer. Covers when to graduate from Free Tier, the three-layer quota design that prevents cost blowups, Context Caching at scale, and a minimal Stripe integration.