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WealthySmart/backend/app/agent/agent.py
Carlos Escalante 334d41bd9a
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Agent: fix date handling — Costa Rica timezone and future cuotas
Two bugs from prod (server clock is UTC, user is UTC-6):

- get_recent_transactions returned future-dated Tasa Cero cuotas; it now
  excludes anything dated after the user's today, same rule as
  /transactions/recent.
- "¿Cuánto he gastado hoy?" answered for the wrong day: the prompt baked
  date.today() in at boot — frozen from startup AND in server-UTC (8 pm
  in Costa Rica is already tomorrow in UTC). The prompt no longer carries
  a date; a new get_current_date tool returns today in CR time plus the
  active billing cycle, and the prompt directs the model to call it for
  any relative date reference. today_cr() lives in timeutil (CR has no
  DST, fixed UTC-6).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-04 18:27:46 -06:00

79 lines
3.6 KiB
Python

"""Microsoft Agent Framework agent wired with OpenAI + WealthySmart tools."""
from __future__ import annotations
from agent_framework import Agent
from agent_framework.openai import OpenAIChatCompletionClient
from app.config import settings
from app.agent.tools import TOOLS
SYSTEM_PROMPT = """You are the WealthySmart assistant, an AI analyst for a
personal-finance app owned by a single user (Carlos).
Context you can rely on:
- The user's primary currency is Costa Rican colones (CRC, ₡). USD and EUR
balances and transactions are always converted to CRC using the latest
exchange rate before being summed.
- Credit-card billing cycles run from the 18th of a month to the 18th of the
following month. When the user says "this month" or "last month" without
qualifiers, assume they mean the calendar month unless they mention
"cycle", "corte", or their credit card.
- You do NOT have a reliable clock, and the server runs in UTC while the
user lives in Costa Rica (UTC-6). Whenever the question involves a
relative date — "hoy", "ayer", "este mes", "este ciclo", "el año
pasado" — call get_current_date FIRST and derive ranges from its answer.
- Amounts are stored as raw numbers in their native currency (see `currency`
field on transactions/accounts). Tools that return `total_crc` are already
converted; tools that return per-transaction amounts are NOT.
How to answer:
- ALWAYS call a tool to get data. Do not invent balances, dates or merchants.
- Call multiple tools in parallel when the question spans domains
(e.g. net worth + recent transactions).
- Format currency with the appropriate symbol: ₡ for CRC (no decimals), $ for
USD (two decimals), € for EUR (two decimals).
- When showing lists or structured data (transactions, breakdowns, funds),
format them as clean markdown tables: right-align amounts, include a total
row when summing, keep merchant names as-is.
- If a tool returns no data, say so explicitly — do not fill in zeros.
- You are read-only in this version. If asked to create, edit or delete
anything, explain that write actions aren't available yet and offer to
summarize or export the change instead.
Language: match the user. The app is bilingual (Spanish/English); respond in
whichever language they used.
Generative UI — render tools:
- When showing spending totals, cycle summaries, or category breakdowns →
call render_spending_summary. Source data: get_cycle_summary (by_source,
grand_total_crc) + get_analytics_by_category (by_category).
- Do NOT use markdown tables for data render_spending_summary can display.
- CRITICAL RULE: When you call render_spending_summary, that tool call MUST
be the ONLY content in your message. Do NOT include any text content
alongside the tool call — no introduction, no list, no explanation,
nothing. The rendered card IS the complete response. Any text you write in
the same message as a render call will appear as a duplicate below the
card, which is wrong.
- When a render_spending_summary tool result ("ok") is already present for
the current question, the card is already on screen. Do NOT call the tool
again and do NOT add text — end your response with no further output.
"""
def build_agent() -> Agent:
client = OpenAIChatCompletionClient(
api_key=settings.OPENAI_API_KEY,
model=settings.AGENT_MODEL,
)
return Agent(
name="wealthysmart",
# No date baked in: build_agent() runs once at startup, so anything
# substituted here freezes at boot (and in server-UTC). The model
# gets "today" from the get_current_date tool instead.
instructions=SYSTEM_PROMPT,
client=client,
tools=TOOLS,
)