Christian Arango
Side projects

Side project · AI agent

Tarima Carmesí

Good calls for musicians hide in scattered event pages and PDFs. I’m building an installable app whose Claude agent searches the web, reads each call’s official rules, and scores it against the artist’s profile. It never submits a form or pays a fee: the artist decides.

Author
Christian Arango
Role
Product Owner and builder, with Claude Code
Platform
Next.js · PWA
Status
In development · October 2026
Real open calls from my register, ranked by score with the deadline in view.

The problem

Good calls hide in long rules with short deadlines

I started it for my own music project. Finding paid gigs, grants, and contests meant reading dozens of rule documents to learn who could apply, what it paid, and when it closed.

What I built

An agent that reads, and code that decides

  • Agent

    Reads the official sources

    A Claude agent with web search and web fetch reads each call’s rules. The only thing it can do is record an opportunity.

  • Scoring

    Scores in code, not in the model

    The agent rates four dimensions; code applies the weights, the vetoes, and a 14-day urgency flag, so the ranking is reproducible.

  • Accounts

    Several artists per account

    Each artist is an isolated space, and every query filters by artist. Tests check that no artist can see another’s data.

Each score shows its four dimensions, and the decision stays with the artist.
See how the score is calculated
src/lib/scoring.tsts
// Se calcula en código, no lo decide el modelo: el agente solo aporta las notas por dimensión.
export const WEIGHTS: Scores = { artistico: 0.25, economico: 0.25, visibilidad: 0.3, viabilidad: 0.2 };

export function verdict(total: number): Verdict {
  if (total >= 75) return 'Prioridad alta';
  if (total >= 60) return 'Buena';
  if (total >= 45) return 'Moderada';
  if (total >= 30) return 'Débil';
  return 'No conviene';
}
The model supplies the ratings; the code decides the verdict.

Decisions

The artist stays in charge, and the costs stay bounded

  • Read, never act

    The agent doesn’t send forms, pay entry fees, or accept terms. Every application is the artist’s call.

  • Search runs at Anthropic

    Web search and page reading happen on Anthropic’s side, so the server never fetches arbitrary URLs.

  • A daily search limit

    Each artist gets three searches a day by default, so a shared install can’t run up the bill.

Where it stands

It runs locally, and a clean copy is ready for other artists

It runs on one computer with an embedded Postgres database, and the same schema moves to Vercel and Neon when it’s shared. One export command produces a clean copy that other artists can install.