Path of Agent

Curse of the Allflame

Challenge League 3.29 · Launches 24 July


  • Revealed live at GGG Live on 16 July
  • Launches 24 July at 10 PM CEST
  • Teased gems: Holy Hammer of Spirals, Reap of Butchering
  • Nautical horror theme, per the teasers
  • Mirage ends 20 July, 3PM PDT
To the Reveal
To Launch
Ask the Agent it reads the patch notes and the ladder daily

The web agent goes live with the 3.29 league. The desktop app answers about your own build today.

The desktop app

Theorycrafting, made accessible.

Use Path of Building without learning it first.

Most Path of Exile players never actually use Path of Building. PoB is powerful, but it takes hours of accumulated game knowledge most players never build up. So the typical workflow becomes: copy a build from poe.ninja, follow it line by line, hope for the best. Path of Agent is meant to close that gap.

You import your build, then either run a full analysis or just ask a question in plain English. An agent drives Path of Building on your behalf, tests whatever you ask, and answers with results from real PoB calculations.

A full analysis takes 5 to 9 minutes and runs around 250 to 400 separate tests in PoB. It costs around 70 to 90 cents at today's model prices, and that should drop as cheaper models get good enough. The first 100 beta users get 100 credits free.

How it works

Every answer comes from a real PoB calculation

We built an engine on top of Path of Building so the agent can test and validate everything it claims.

Path of Building is the community calculator every serious PoE player uses. It does the math the game does not expose: real DPS with all your modifiers, EHP under each damage type, the effect of any gear or passive change.

We forked Path of Building and built an engine on top: a programmatic interface with 52 functions the agent calls as tools. Equip an item. Swap a gem. Allocate a tree node. Run the calculation. Read the result. Every action goes through the real PoB engine, so the agent can test and validate any claim it makes before reporting it.

When the agent says "swap Greater Volley to Pierce Support, +47.5% DPS", it really did call the swap-and-recalculate function, and PoB really did return that number. The model never invents stats.

~5,900
lines of custom Lua we wrote on top of PoB Community
52
functions the agent can call (equip, swap, allocate, calculate, read)
100%
of stat numbers in the output come from a real PoB calculation
What the screen looks like

The desktop app

One main panel for the analysis, sidebars for live build stats and the gear / skills / tree breakdown.

Skill analysis with support gem comparisons and DPS impact
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Skills: gem swaps, link options, DPS deltas
Gear analysis with item upgrades and mod menus
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Gear: per-slot upgrades and mod choices
Tree analysis showing notable swaps and the resulting stat changes
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Tree: notable swaps and cluster changes
Combined upgrade packages with DPS and EHP gains
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Combined packages, ranked by total impact
Import a build

Paste a PoB code, drop a pastebin URL, or sign in with your PoE Account and pick a character. Takes a few seconds.

Click Analyze, wait 5 to 9 minutes

The agent reads your build state, runs hundreds of tests in Path of Building (gear swaps, gem swaps, tree changes), then combines the best ones into full upgrade packages. Results stream as they finish.

Read the recommendations

You get a list of concrete changes, each with the measured DPS and EHP impact. Ask follow-up questions in the same chat if you want to drill deeper or test alternatives.

Free reference

Build Library: 38 ladder-curated guides

Real characters from the ladder, pinned per tier. No account, no credits.

Build Library with 38 ladder-curated guides
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For each popular skill + ascendancy combination on the current ladder, we pin three real characters: one in Early Mapping, one in Endgame, one Aspirational. Each one shows full gear, gem links, and passive tree at that tier. There is also a leveling section with a passive tree plan you can scrub through act by act.

The guides are browsable inside the desktop app today and are coming to this site as the 3.29 ladder data matures in the first weeks of the league.

Browse the guides
Pricing

Credits, no subscription

You buy credits, you spend them when you run an analysis. They do not expire.

Why we charge per use

One analysis runs OpenAI GPT-5.5 through dozens of tool calls and hundreds of Path of Building simulations. We pay OpenAI for every call, and that money has to come from somewhere. We tested cheaper models. They couldn't reliably operate the 52-function PoB interface: they lost track of context across long tool chains, skipped verification steps, or invented stat numbers. Until cheaper models close that gap, GPT-5.5 is what we run.

Per-analysis cost should drop over time as cheaper models get good enough to handle the work. We will switch to them the moment they can, and you pay less.

Credits let you pay for what you use. No subscription, no surprise charges. Inside the app the Oracle's Ledger shows exactly how many credits each call cost.

Oracle's Ledger with per-call credit breakdown
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Numbers

70–90¢
per full analysis (current model prices)
15–20¢
per follow-up question
expected to drop as cheaper models catch up

Internally each analysis is billed in credits (about 80 to 100 per analysis, 100 credits ≈ $1 at pack pricing). Packs come in €5, €10, and €20 sizes. Credits never expire.

Whole-build testing during an analysis
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100

First 100 users get 100 credits free

Make an account during the beta and verify your email. 100 free credits land in your account automatically. That covers your first full analysis and a follow-up question or two. No credit card required.

Create free account
Questions

FAQ

Is this just AI doing my build for me?
No. The point of Path of Agent is to give average players the same theorycrafting access experienced PoB users already have, not to replace your decisions. The agent operates Path of Building on your behalf and reports results from real PoB calculations. You still pick the direction, you still pick what to actually do. The agent does the testing legwork, not the choosing.
What version of Path of Exile does this work with?
Path of Exile 1. Game data tracks Path of Building and RePoE, so anything those two projects support, this app supports. The League page always shows which league the data currently covers. PoE 2 is not supported.
How does the analysis actually work?
You import a build (PoB code, pastebin URL, or PoE Account character). The desktop app runs Path of Building locally on your PC. We forked PoB and added a programmatic interface with 52 functions: equip an item, swap a gem, allocate a passive, run the calculation, read the result. The agent calls those functions to test changes against your real build state, reads back the resulting stats from PoB, and uses those numbers to pick what to recommend. Every DPS and EHP figure in the output came from a real PoB calculation.
How long does an analysis take?
About 5 to 9 minutes end to end, based on recent runs. The first 2 to 4 minutes are setup: reading your build state, pre-running a batch of test cases, and pulling ladder data for similar characters. After that the agent runs three rounds of testing in Path of Building, and the final summary streams to the screen.
How many tests does an analysis actually run?
Roughly 250 to 400 separate Path of Building calculations per analysis, depending on build complexity. The agent batches them in three rounds and combines the winners into whole-build packages.
What model does it use?
OpenAI GPT-5.5. We tested several smaller and cheaper models. The agent has to chain dozens of tool calls and hold full build context across all of them, and the smaller ones lose track of context, skip verification steps, or invent stat numbers. Until cheaper models close that gap, GPT-5.5 is what we run. Per-analysis cost is expected to fall as cheaper models catch up.
Why credits instead of a subscription?
Each analysis runs the model through dozens of real Path of Building calculations, and we pay OpenAI for every one of them. Credits let you pay only for what you use, no recurring charge. The Oracle's Ledger inside the app shows exactly where every credit went, per call.
How much does an analysis cost?
Around 70 to 90 cents per full analysis at current model prices, or roughly 80 to 100 credits (100 credits ≈ $1 at pack pricing). Follow-up questions are about 15 to 20 cents each. This should drop as cheaper models get good enough to handle the work, and you pay less.
Is there a free trial?
The first 100 beta users get 100 free credits when they make an account and verify their email. That covers your first full analysis and a follow-up question or two. The Build Library is free for everyone, no account required.
What does the server see? What gets stored?
Your build data lives on your PC. To run the analysis the desktop app sends the build context through our server, which forwards it to OpenAI. The server does not keep that data after the analysis finishes, by default. The first time you import a build the app explicitly asks whether you want to share your analysis logs with us for quality improvement and debugging. If you opt in, those logs are kept for 30 days. If you don't, nothing about the analysis is stored on our end. See the privacy policy for the full breakdown.
What platforms?
Windows 10 or newer. The app is built with Tauri.
Why are you asking for feedback?
The product is in beta. Build analysis works and people use it daily, but it is still rough in places and we are figuring out which features matter most. We need real users telling us what they hit, what they want, and what they wish was different. Discord and email are both linked at the bottom of every page.
Intent

What this is for, plainly

We know LLM-based tools are a sensitive topic in the PoE community.

The point of Path of Agent is not to play the game for you or hand you a finished build to copy without thinking. It's the opposite. The point is to give average players the same theorycrafting access experienced PoB users already have, so you don't stay permanently reliant on ninja builds and step-by-step guides. You should be able to understand and improve your own character. The app just lowers the barrier to doing it.

The model is not the part that picks the answer. PoB is. The agent is what lets you talk to PoB without first becoming a PoB expert.

About me

Who is behind this

Path of Agent is a personal project. I'm doing a PhD in physics, and I have been building this alongside the PhD for months. The PoB engine layer alone is around 5,900 lines of custom Lua on top of PoB Community, and the agent has 52 functions wired into that engine. None of this was vibe-coded together. Getting an agent to operate Path of Building reliably enough to be trusted with real numbers takes serious engineering work, and that is what has gone in.

Before reflexively dismissing this as AI slop, please try it. You are welcome to call it whatever you want afterwards, but at least take a look before judging. The output is the only honest way to evaluate it.

The desktop client and the PoB engine extension are public on GitHub if you want to read the code:

What we need

If you want to help, here is the concrete ask

The product is in beta. Build analysis works and people use it daily, but it is still rough in places, the build library is small, and we are figuring out which features matter most. User feedback is the only way to know what to fix and what to build next.

  1. 1

    Download Path of Agent.

    Windows 10 or newer. pathofagent.com/download

  2. 2

    Register an account and verify your email.

    First 100 beta users get 100 free credits. That covers your first full analysis and a follow-up or two.

  3. 3

    Run an analysis on one of your own builds.

    Paste a PoB code, drop a pastebin URL, or sign in with your PoE Account. The first analysis is free with the welcome credits.

  4. 4

    Share what you saw on Discord.

    The output, what worked, what did not, what you wished it could do. Suggestions for major changes to how the app works are as welcome as bug reports. discord.gg/Xe78YapHxp