a[ssistan]t
Tools you talk to that take action.
1 project →I build AI you can leave running.
I'm Leonardo Cardoso, a senior software engineer in Berlin with over a decade in production codebases across backend, web, and mobile, currently at Trade Republic. a7t is where I publish the agentic systems I build off-hours, the ones I actually keep running every day.
The five
a · _ · ta[rchivis]t
Memory you can trust and recall.
1 project →a[rchitec]t
Infrastructure for agents and pipelines.
2 projects →a[utopilo]t
Routines that hold the line without you.
2 projects →a[utoagen]t
Agents that plan, act, and report back.
1 project →Projects
open sourceOpenAI-compatible router that greedy-batches calls so a burst of requests costs one model swap.
Five workflows that pick issues from a project board, implement them, fix their own CI failures, merge green PRs, and keep the board updated.
GitHub Actions + Fastlane that take a clean Xcode project from feature-merged to TestFlight delivered, version bump and App Store metadata included.
A native macOS companion that lets you browse Claude Code sessions, explore diffs, and re-run commands, all from a polished SwiftUI interface.
Articles
long-form, slowly writtenAlmost sherlocked by Anthropic
On the same day I released Three-Body Agent, Anthropic shipped Managed Agents. Two solutions to the same problem, one solo dev and one frontier lab, no overlap in audience. What the convergence means.
Orchestrating agents with GitHub Actions
I moved my whole autonomous coding pipeline onto GitHub Actions in two days, because Anthropic shut the door on the previous setup overnight. Notes on what changed and what I would do differently.
How I built an agent factory that ships code while I sleep
182 PRs merged in 10 days, most of it while I was asleep or with my family. The architecture matters less than the discipline around it. Here is what made it work.
Booklets
Architectural deep-dives, one-time price. Lifetime updates.v0.1 · 41 pages
Three-Body Agent: the Playbook
Blueprints for autonomous frontier LLM pipelines that carry a GitHub issue to a merged pull request, with no human in the loop.
Coming soon
Slipway: the Playbook
The iOS release pipeline, written down: GitHub Actions and Fastlane carrying a merge on main all the way to a TestFlight build.
Contact
work with meWant one of these wired into your stack, or a system spec'd from scratch? Book a 45-minute call, or send me an email.
Stay in the loop
One email when something ships.Get told when the next booklet ships, plus the free seven prompts behind Three-Body Agent 1-pager.
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