Capping Parallel Agents With a Token Budget — Designing a Guard That Stops Runaway Cost
Running many agents in parallel quietly inflates your token bill. This is not about shrinking prompts — it is about a governance layer that meters spend in real time and cuts it off at a budget. Full design and TypeScript implementation, drawn from my own overnight jobs.
Multi-Agent CI/CD Quality Gate — Automating PR Review, Testing, and Security with Antigravity × GitHub Actions
A complete implementation guide for building a multi-agent CI/CD quality gate using AgentKit 2.0 and GitHub Actions. Covers parallel code review, test generation, and security scanning agents — with production cost management and pitfall solutions.
Five Paths to Sell AI Agents Built on AgentKit 2.0 — How Indie Developers Should Pick a Distribution Channel
AgentKit 2.0 lets a solo developer ship a real, useful AI agent. The hard question is where to sell it. This article walks through five distribution paths — marketplaces, direct sales, SaaS embedding, productized consulting, and subscription agents — with the trade-offs that matter.
Build an AI Agent SaaS with Antigravity × AgentKit 2.0 × Stripe — A Complete Implementation Guide for Solo Developers
How to build a subscription AI agent SaaS with AgentKit 2.0, Stripe and Antigravity. Architecture, billing, Webhook idempotency, production deployment — plus the Redis concurrency-slot bug that quietly locks out your heaviest users.
Orchestrating a Team of Specialist Agents Solo: Practical Multi-Agent Design in Antigravity
Master multi-agent development in Antigravity. Deep dive into Manager Surface architecture, specialist agent design, AGENTS.md configuration, common patterns, and production deployment strategies for enterprise-grade systems.
Antigravity × A2A Protocol: Complete Implementation Guide for Scalable Multi-Agent Systems
A complete guide to implementing Google's A2A (Agent-to-Agent) protocol with Antigravity. From agent card design to task delegation, streaming communication, and production deployment on Cloudflare Workers.
AgentKit 2.0 Production Design Patterns — Strategic Architecture for 16 Specialized Agents
How to compose AgentKit 2.0's 16 specialized agents on a real production project: five orchestration patterns, which four agents earn a permanent seat, AGENTS.md as team standards, and how to split work across a 1M token context with Gemini 3.1 Pro.
When A2A Tasks Sat Stuck in 'working' — Field Notes on Tracing State Transitions to Detect Stalls
Antigravity's A2A coordination fails less by crashing and more by sitting in 'working' without progress. This walks through recording state transitions as one timeline and naming a stalled task down to which agent and which edge froze, along with what running agents daily has taught me.
When Parallel Agents Ran the Same Task Twice and Quietly Doubled the Bill — Field Notes on Measuring and Stopping Duplicates
The bill for our parallel agents came in about 1.9x higher than expected — because multiple workers were running the same task twice. These are field notes on measuring the duplication, stopping it with idempotency keys, and attributing cost per task.
Before Your dynamic sub-agents Branch Out Too Far — Designing a Depth Budget and Fan-out Cap
Antigravity 2.0's dynamic sub-agents can spawn their own sub-agents at runtime. Handy, but without depth and fan-out control they can burn through your quota overnight. Here are three guards, with concrete code.
Before Your Antigravity Agents Fight Over the Same File — Ownership Manifests and Conflict Detection
Multi-agent workflows do not break at the design stage. They break at runtime. Here are the field notes: an ownership manifest that pins each agent's editable region, a git-only conflict detector, and a three-part handoff contract.
Your Antigravity Sandbox Isolates Multi-Agents Less Than You Think — Notes on Containing the Blast Radius
An Antigravity sandbox gives you the feeling of isolation, but isolation leaks through three real gaps: shared volumes, over-broad allowed domains, and approval fatigue. Field notes on plugging the leaks, containing the blast radius by design, and proving isolation holds with tests.