Javier Cuevas

CEO @ Stealth Startup.
Formerly: Co-founder at @Gudog (acquired). CEO at @Diacode.
Interests: Marketplaces, Elixir, Ruby, React Native, AI.

[Javier Cuevas @javier_dev]

Gemini 4 Carbon High just cut my ExUnit test suite time in half 🫡

[Javier Cuevas @javier_dev]

@DNtizar del antibalas al portabebés 🫨

[Javier Cuevas @javier_dev]

@tohuerta @BisiestoEstudio @relajaelcoco @secture_com @MiguelBisiesto dream team

[Javier Cuevas @javier_dev]

Existe incluso la "M-20", o "segundo cinturón de circunvalación de Madrid", históricamente conocido como la Ronda o el Paseo de Ronda.

https://t.co/RtFBV45k2P

[Javier Cuevas @javier_dev]

En mi grupo de amigxs, [quienes antes vivían todxs mayoritariamente en el centro hasta que se volvió imposible 🪦💀], siempre se ha usado el término "M10" para referirse al centro-CENTRO, de Madrid.

Pero nunca hubo un consenso claro sobre qué entraba dentro de la M10 y qué no.

[Javier Cuevas @javier_dev]

BTW el concepto original de "M-10" viene del "primer cinturón de circunvalación o paseo de ronda de Madrid", y es claramente una referencia a las carretera de circunvalación M-30, M-40, etc.

https://t.co/EmfBYEAVik

[Javier Cuevas @javier_dev]

@iamposti Es verdad que se friegan mejor. De eso no hay duda.

[Javier Cuevas @javier_dev]

¿Queda algún restaurante en Malasaña que no tenga vajilla de acero inoxidable y vinos naturales?

[Javier Cuevas @javier_dev]

🙃

[Paul Graham @paulg]

Amazon banning agents is the first opportunity I've seen since Amazon was founded for a startup to create an Amazon competitor. People will want agents to buy stuff for them. It will be one of the main use cases. And they won't want to use some Amazon-supplied agent to do it.

[Javier Cuevas @javier_dev]

@DNtizar "Patrás Deployed Engineer"

[Javier Cuevas @javier_dev]

So... no "great lock in"™️ happening this year?

[Javier Cuevas @javier_dev]

@thsottiaux ahh, actually it has been renamed to /subagents

[Javier Cuevas @javier_dev]

@thsottiaux codex cli 0.149.0 shipped a new `codex agents` dashboard, and now I cannot even use `/agent` to see my subagents within a session. I get this.

Note that opening `codex agents` in a different terminal doesn't help. It's really confusing.

[Javier Cuevas @javier_dev]

If your app perf is awful, it's not because of AI. You just don't care enough.

Just slammed a 600ms INP to 72ms (kudos to gpt-5.6s-sol)

[Javier Cuevas @javier_dev]

Spent the last few months on Conductor, but officially migrated to @orca_build. Missing Ghostty for xterm.js is a small trade-off for how much better the workflow is.

[Javier Cuevas @javier_dev]

Both "Claude Code on the web" and "Codex cloud", (remote sessions in docker containers), are way behind of what they should be.

Their containers are slow, environment setup is a nightmare with their firewalls, and Codex doesn't even let you pick your model (Sol/Terra/Luna).

[Javier Cuevas @javier_dev]

01. I
02. wonder
03. why
04. LLMs
05. like
06. numbering
07. and
08. zero-padding
09. things
10. so
11. much

[Javier Cuevas @javier_dev]

My AI coding history:

Past:
1. VSCode + GitHub Copilot (Pro sub)
2. Gemini CLI
3. OpenCode + Copilot (Pro sub)
4. Claude Code CLI (Max 20x sub)
5. OpenClaw (for remote, till Antrophic killed it).

Current:
* @conductor_build + (Claude Max 20x sub)
* @paseo_sh (for remote)