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Show HN: I built an AI agent that helps me invest

https://github.com/lastmile-ai/mcp-agent/tree/main/examples/usecases/mcp_realtor_agent

A while back, I built a simple app to track stocks. It pulled market data and generated daily reports based on my risk tolerance. Basically a personal investment assistant. It worked well enough that I kept going.

Now, the same framework helps me with real estate: comparing neighborhoods, checking flood risk, weather patterns, school zones, old vs. new builds, etc. It’s a messy, multi-variable decision—which turns out to be a great use case for AI agents.

Instead of ChatGPT or Grok 4, I use mcp-agent, which lets me build a persistent, multi-agent system that pulls live data, remembers my preferences, and improves over time.

Key pieces: • Orchestrator: picks the right agent or tool for the job • EvaluatorOptimizer: rates and refines the results until they’re high quality • Elicitation: adds a human-in-the-loop when needed • MCP server: exposes everything via API so I can use it in Streamlit, CLI, or anywhere • Memory: stores preferences and outcomes for personalization

It’s modular, model-agnostic (works with GPT-4 or local models via Ollama), and shareable.

Let me know what you all think!

( 24 comments | 2 points | on HN )
Re:Show HN: I built an AI agent that helps me invest by axezing121321 on Saturday July 19, 2025 @12:28PM (#44616881)
Happy to elaborate on how ARC OS works — It parses subjective input into logic trees with assumptions, conflict checks, bias flags, and reasoning trails.

It’s symbolic only (no LLMs), designed for alignment auditing, law/policy frameworks, and decision explainability.

If anyone wants an example, I can post a breakdown here.

Re:Show HN: I built an AI agent that helps me invest by pizzathyme on Monday July 21, 2025 @10:08AM (#44635288)
I think others are asking more about the real-world investment value of this, not the technical implementation.

What actual trades were made by the user/creator? What was the ROI? How did profitability compare to their returns before using this tool?

With today's LLM's it's easy for anyone to generate a 20-page "report" with a analysis about investments. But a report that, when followed, actually gives you above-average returns? No one has shown evidence of that yet.

Re:Show HN: I built an AI agent that helps me invest by axezing121321 on Monday July 21, 2025 @11:50AM (#44636647)
Sorry, I think I replied in the wrong thread. My comment was meant for a different topic — feel free to ignore!
Re:Show HN: I built an AI agent that helps me invest by axezing121321 on Saturday July 19, 2025 @12:30PM (#44616903)
Here’s a full example from ARC Builder:

GOAL: Should we adopt 4-day work weeks? • Premises: • Burnout reduces long-term productivity • Productivity is currently stable but at risk • No legal constraints to switching • Constraints: Deliverables must not drop • Rule Applied: Cost-benefit logic (wellbeing vs output risk) • Bias Check: Potential optimism bias flagged • Confidence Level: Medium • Contrast Case: Reverses conclusion if burnout removed

The output includes conflict checks, rule reference, and audit trail. I’m curious how others here feel about symbolic scaffolds like this for alignment or decision evaluation?

Re:Show HN: I built an AI agent that helps me invest by axezing121321 on Monday July 21, 2025 @11:49AM (#44636638)
Sorry, I think I replied in the wrong thread. My comment was meant for a different topic — feel free to ignore!
Re:Show HN: I built an AI agent that helps me invest by btbuildem on Monday July 21, 2025 @09:51AM (#44635095)
Sounds interesting -- can you share some real examples?

In context of investing, what does "It worked well enough" translate to?

Re:Show HN: I built an AI agent that helps me invest by maddmann on Monday July 21, 2025 @10:04AM (#44635243)
Yeah I’d like to know this too. I have also done well (enough) with investing by literally sitting on my index fund investments.
Re:Show HN: I built an AI agent that helps me invest by freezey00 on Monday July 21, 2025 @10:00AM (#44635202)
I'd be curious also.
Re:Show HN: I built an AI agent that helps me invest by poulpy123 on Monday July 21, 2025 @09:58AM (#44635179)
Well the most important information is missing: what was your ROI ? :D
Re:Show HN: I built an AI agent that helps me invest by kqr on Monday July 21, 2025 @10:09AM (#44635292)
I'm going to assume this project is at best a few years old, so return over index is more likely to be an indicator of overbetting (taking on too much risk) than a performance indicator.

Backtesting would be more useful. Of course, LLMs cannot be backtested since they know the past.

This system is impossible to test. I would be hesitant to trust it.

Re:Show HN: I built an AI agent that helps me invest by tmaly on Monday July 21, 2025 @12:01PM (#44636793)
it looks like the code was committed a week ago. I do not see an iterative history on the code
Re:Show HN: I built an AI agent that helps me invest by TuringNYC on Monday July 21, 2025 @10:15AM (#44635367)
>> I'm going to assume this project is at best a few years old, so return over index is more likely to be an indicator of overbetting (taking on too much risk) than a performance indicator.

Best metric here would be a Sharpe Ratio and drawdown details. https://en.wikipedia.org/wiki/Sharpe_ratio

> This system is impossible to test. I would be hesitant to trust it.

Disagree. Best test would be a paper test going forward, audited by a common platform.

Re:Show HN: I built an AI agent that helps me invest by kqr on Monday July 21, 2025 @10:32AM (#44635567)
Any forward test depends on market assumptions. I'm not a practitioner, and as a layperson I wouldn't know whose assumptions to trust.
Re:Show HN: I built an AI agent that helps me invest by haniehz on Monday July 28, 2025 @12:10PM (#44712230)
I didn’t build this to beat the market...it started as a way to reduce my own decision fatigue and make sure I wasn’t missing obvious signals. That said, it’s more of a research agent than a trading bot. For ROI, it’s not auto-trading, but it has helped me avoid a few bad calls and made my reports more consistent and thorough.
Re:Show HN: I built an AI agent that helps me invest by 65 on Monday July 21, 2025 @10:09AM (#44635306)
Hate to be that guy but I'm not sure how this is any better or more reliable than something like FinViz or NeighborhoodScout.
Re:Show HN: I built an AI agent that helps me invest by throwawayoldie on Monday July 21, 2025 @10:20AM (#44635412)
Because it has AI. The latest, shiniest shiny object!
Re:Show HN: I built an AI agent that helps me invest by haniehz on Monday July 28, 2025 @12:13PM (#44712258)
Great question and those are solid tools! Where this differs is the orchestration. Instead of switching tabs or manually checking five sources, this bundles everything into one interactive, LLM-assisted report, plus it remembers your preferences, investment style, and context. You can even swap out GPT for a local model if you’re privacy-conscious or budget-sensitive.
Re:Show HN: I built an AI agent that helps me invest by astrange on Monday July 21, 2025 @10:11AM (#44635329)
The ideal design for such an agent is that it would tell you to put all your money in a Betterment account, and then if you try to do anything other than that it should give you electric shocks until you stop.

(Vanguard if you don't benefit from tax loss harvesting.)

Re:Show HN: I built an AI agent that helps me invest by moduspol on Monday July 21, 2025 @10:30AM (#44635544)
Is that going to beat FXAIX in a Fidelity account? The expense ratio is 0.015% and it tracks the S&P 500.
Re:Show HN: I built an AI agent that helps me invest by kyledrake on Monday July 21, 2025 @10:41AM (#44635673)
The main benefit of something common and well supported like VIX is that it's easier to transfer between companies without selling it, which for a brokerage account is a taxable event.

Fidelity has no expense funds or low expense funds, but if they change their mind or the company becomes bad for you, you can't move it to another provider without being taxed.

If you will never leave Fidelity or if it's not taxable anyways (retirement) then it's fine, but if you think you might have to move assets then it's a potential risk unless other providers also support them.

Being trapped is not worth the slightly lower expenses IMO.

Re:Show HN: I built an AI agent that helps me invest by moduspol on Monday July 21, 2025 @10:56AM (#44635900)
Thanks, that helps. In this case, it's my IRA money anyway, but that's good to keep in mind.
Re:Show HN: I built an AI agent that helps me invest by astrange on Monday July 21, 2025 @06:21PM (#44641059)
If you're fine with 100% risk then probably not, but you want some low-risk assets depending on your age. And if you have high marginal tax rates like anyone living in CA does then a little tax optimization is worth it.
Re:Show HN: I built an AI agent that helps me invest by astrange on Thursday July 24, 2025 @05:17PM (#44676284)
Oh, also mutual funds like FXAIX are less tax-efficient than ETFs.
Re:Show HN: I built an AI agent that helps me invest by thomasrp on Tuesday July 22, 2025 @05:40AM (#44644919)
Is it possible to try your real estate AI agent? I've built a real estate data API (stream.estate) and would be very much interested to see how it works; maybe we can add some features to make that kind of project better.