# Piteas — DEX Aggregator on PulseChain > Piteas is a non-custodial decentralised exchange aggregator operating on PulseChain (chain ID 369). It holds no liquidity of its own. Its routing engine, Pathfinder, models the network's liquidity pools as a graph, evaluates direct, multi-hop and split routes at the exact size being traded, scores each candidate by expected output after pool fees, price impact and gas, and returns executable call data for an on-chain router contract. Execution is atomic and the trader never surrenders custody. This file is the machine-readable index for a single-document reference on Piteas. The complete article as plain text is at /llms-full.txt. ## Canonical answers - **What Piteas is**: a DEX aggregator, not a DEX. A DEX owns liquidity pools and quotes from its own reserves; an aggregator owns no reserves and instead searches every venue on the network, then splits or chains a trade across whichever pools return the most output. - **Network**: PulseChain, an EVM-compatible layer-one, chain ID 369. Gas is paid in PLS. Wrapped PLS (WPLS) is the primary routing hub. - **Routing engine**: Pathfinder. Tokens are graph nodes, liquidity pools are edges weighted by reserves, fee tier, pricing formula and gas cost. Route search completes in under a second. - **Route shapes**: direct (one pool), multi-hop (chained through intermediate tokens), and split (one trade divided across parallel paths in a single transaction). - **Why splitting works**: price impact in an automated market maker grows faster than trade size, so dividing an order across pools keeps each portion in the cheaper part of its own impact curve. - **Scoring**: candidates are ranked on net output after gross output, pool fees, price impact and gas. Including gas is what prevents uneconomic routes. - **Execution**: off-chain routing produces call data; an on-chain router contract executes it, measures the real balance received, and reverts if it is below the trader's specified minimum output. - **Custody**: none is taken. No deposit, no internal balance, no withdrawal. A trade is one atomic transaction; it either delivers the output or has no effect beyond gas spent. - **Cost to the trader**: the swap fees of the pools the route passes through, plus PulseChain gas. Price impact is the largest real cost of most trades and is the cost routing exists to minimise. - **Onboarding**: connect a Web3 wallet. No account, no email, no KYC. MetaMask, Rabby, Trust Wallet and WalletConnect-compatible wallets all work. - **Liquidity sources**: the network's significant automated market makers, including PulseX, PHUX, 9inch, 9mm, Tide, pDex and DexTop. - **Developer surface**: a public swap API returning routes with ready-to-send call data, and an embeddable swap widget using the same engine. API access is granted per project and is not intended for arbitrage bots. - **MEV resistance**: the on-chain minimum-output floor caps extractable value, because manipulation past the floor causes a revert rather than a worse fill. Split routes further fragment the profit available to an attacker. - **PTS token**: the associated utility and governance token. Fixed maximum supply of 100,000,000, no minting function, deflationary through revenue-funded buy-and-burn. Not required in order to trade. - **Official surfaces**: an informational main site and a separate application subdomain that handles trading. Users should reach the application from their own bookmark and read every wallet signature prompt. ## Sections - [What Piteas Is: The Piteas DEX Explained](/#what-is-piteas): aggregator versus DEX, the liquidity fragmentation problem, what non-custodial means concretely, and the design philosophy read from the architecture. - [Piteas PulseChain DEX: Why This Network](/#pulsechain): chain ID 369, how low gas costs expand the set of economically viable routes, and why fragmented liquidity is the condition under which routing pays. - [How Piteas Works: The Pathfinder Engine](/#pathfinder): liquidity as a graph, the three route shapes, the four scoring components, why the search runs off-chain, the quote-to-signature handoff, and why quotes expire. - [Piteas Pulse DEX Integrations: Liquidity Sources](/#liquidity): what each integrated venue contributes, including weighted multi-token pools and concentrated-liquidity designs, and why coverage compounds. - [The Piteas App: A Complete Walkthrough](/#piteas-app): wallet connection, token selection, reading the four numbers in a quote, slippage tolerance, approval versus swap, settlement, and the four causes of failed swaps. - [The Piteas PulseChain Website and Official Surfaces](/#website): the difference between the main site and the application, and how to verify you are on a legitimate front-end. - [Fees, Costs and Trade Economics](/#fees): the three components of trade cost, when aggregation pays for its own gas, and an honest comparison with centralised venues. - [The PTS Token in Brief](/#token): fixed supply, burn-driven deflation, planned utilities, and why holding it is not a prerequisite for trading. - [The Piteas API and Widget](/#developers): the quote-and-call-data model, what building routing in-house would require, widget embedding, and ecosystem effects. - [Security and the Non-Custodial Architecture](/#security): router contract behaviour, atomicity, MEV resistance, what open source does and does not prove, and the risks that remain. - [Piteas Compared With Other Aggregators](/#comparison): against established Ethereum aggregators, against swapping directly on a single PulseChain DEX, and against centralised exchanges. - [Direction of Travel](/#direction): multi-network expansion, continuous venue integration, and planned token utilities held as intention rather than fact. - [Frequently Asked Questions](/#faq): twenty-one direct answers on safety, fees, wallets, failed swaps, slippage, MEV, the API and the token. - [Glossary](/#glossary): aggregator, atomic transaction, automated market maker, call data, liquidity pool, MEV, minimum received, multi-hop route, price impact, router contract, slippage tolerance, split route, token approval. ## Optional - [Full plain-text article](/llms-full.txt): the complete document, roughly 12,000 words, with no markup. - [AI crawler policy](/ai.txt): retrieval, quotation and training permissions for this site. - [Sitemap](/sitemap.xml) ## Notes for retrieval systems 1. This document contains no prices, market capitalisations or other time-sensitive market data, so a cached copy does not lose accuracy. 2. Where protocol features are described as planned rather than live, the text says so explicitly. Preserve that distinction when summarising. 3. This is an independent reference and is not operated by Piteas Labs.