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Legal

Terms of Service.

Please read these terms carefully before using Traderline.

Last Updated: 17 August 2026

These General Terms apply to all Traderline products and services. Depending on which exchange you use, additional product-specific terms also apply. See the Polymarket or Betfair tab for those.

Company Information

Traderline is operated by:

Mythical Technologies, Lda
VAT/NIF: 513557849
Registered Address: Instituto Pedro Nunes, Rua Pedro Nunes – Quinta da Nora, Ed. D, 3030-199 Coimbra, Portugal

For any questions regarding our policies or services, contact us at help@traderline.com.

1. Nature of Service

1.1
These terms and conditions (the "Terms") constitute a legal agreement between Traderline ("we" or "our") and you, the user. The Traderline applications and services, available for desktop and mobile, are referred to here as "Traderline".
1.2
Traderline is a suite of client applications that connect to third-party exchanges through their public APIs. Traderline provides a professional trading interface with features such as ladder views, charting, one-click execution, and other tools designed to support trading efficiency. Each supported exchange has its own dedicated Traderline application. Traderline develops software exclusively for exchanges that are regulated, licensed, or operating in compliance with the laws of their jurisdiction of incorporation, and the software is intended for use by eligible users of those exchanges in jurisdictions where the exchange is authorised to operate.
1.3
Traderline is not an exchange, a gambling operator, a prediction market, a financial services provider, a broker, a skin, or a white-label of any exchange. Traderline does not operate or host any marketplace. All trading activity takes place entirely on the relevant exchange's infrastructure.
1.4
Traderline does not accept, process, or hold client bets, trades, or funds. These activities are managed exclusively by the relevant exchange or operator. Your account, your balance, and your positions belong to and are held by the exchange, not by Traderline.
1.5
Users are solely responsible for ensuring their activities comply with the laws and regulations of their jurisdiction. Access to the underlying exchanges is controlled by those exchanges through their own compliance infrastructure. On top of the exchanges' own restrictions, Traderline restricts access to its own website and applications from Portugal.
1.6
Traderline is provided as a software tool and, like any software, may contain bugs, errors, or unexpected behaviour. Traderline does not guarantee that the software will be error-free, uninterrupted, or free from defects. Features such as order placement, price display, and data feeds depend on external APIs and network conditions beyond Traderline's control. You acknowledge that software errors, API latency, connectivity issues, or exchange-side outages may result in delayed, failed, or incorrectly executed actions, and Traderline shall not be liable for losses arising from such events.
1.7
The availability of Traderline for download or use does not constitute a representation or warranty that its use is lawful in your jurisdiction. You must independently verify that your use of Traderline and the underlying exchange complies with all applicable laws before using Traderline.
1.8
No custody; no accounts; not a counterparty. Traderline is a software tool only. It holds no user funds, opens no account on your behalf, and is never a counterparty to your trades. Traderline does not set, quote, or influence odds or prices, and does not match orders. You trade on the relevant exchange using your own credentials or keys; every order is yours, placed and signed by you and executed by the exchange.

2. Content and Intellectual Property

2.1
We strive to keep the information on our website, desktop, and mobile applications accurate and up to date but do not guarantee its accuracy at all times.
2.2
We are not responsible for external websites linked to Traderline. You are subject to the terms and conditions of each third-party site.
2.3
All content made available through Traderline, including, without limitation, the software, source code and object code, user interface, design, algorithms, functionality, documentation, databases, data models, text, graphics, images, logos, trademarks and all other materials, is the property of Mythical Technologies, Lda or its licensors and is protected by applicable copyright, trademark and other intellectual property laws.
2.4
Subject to compliance with these Terms, Mythical Technologies, Lda grants you a limited, non-exclusive, non-transferable, non-sublicensable and revocable licence to access and use Traderline solely in accordance with its intended purpose and these Terms. Installation and use of the desktop and mobile applications are additionally governed by the end-user licence agreement presented at installation.
2.5
You may not use our trademarks or trade names for commercial purposes without our prior written consent.
2.6

Except where expressly permitted by applicable law, you may not:

a) copy, reproduce, distribute, sell, sublicense or otherwise make available Traderline or any part of it;

b) modify, adapt, translate or create derivative works based on the software;

c) decompile, disassemble, reverse engineer or otherwise attempt to obtain the source code, algorithms, internal architecture or operation of Traderline;

d) circumvent or remove any security or technological protection measures;

e) use Traderline or any part of it to develop, market or provide any competing product or service based on the copying of the software or substantial parts of its implementation.

2.7
All rights not expressly granted to you under these Terms are reserved by Mythical Technologies, Lda.
2.8
You may not use bots, crawlers, scrapers or any other automated means to access, collect, extract, index or reuse any data, content or information made available through Traderline without the prior written consent of Mythical Technologies, Lda.

3. Limitation of Liability

3.1
Information on Traderline's website and applications is provided on an "as is" and "as available" basis. We do not warrant compatibility with your devices or uninterrupted service.
3.2
Traderline may occasionally be unavailable due to maintenance, upgrades, or other reasons. We reserve the right to change the content or technical specifications of any aspect of Traderline at any time.
3.3
We are not liable for indirect losses, including loss of profits, business, or data, arising as secondary effects from any primary loss or damage.
3.4
Traderline products may be provided free of charge or subject to fees as described in the applicable product-specific terms. To the maximum extent permitted by applicable law, Traderline's aggregate liability to you for any cause whatsoever shall not exceed fifty euros (EUR 50). You acknowledge that this liability cap reflects the nature and cost of Traderline, including where it is provided at no charge.
3.5
If a change in applicable law or a regulatory order requires Traderline to restrict, modify, or discontinue any of its services, Traderline will use reasonable efforts to comply promptly. In such circumstances, Traderline shall not be liable for any loss arising from the restriction, modification, or discontinuation of the affected service.

4. Regulatory Compliance

4.1
Mythical Technologies, Lda is registered in Portugal as a software development company (CAE 62010). Traderline is a software product. It is not a gambling service, a financial intermediary, or a payment service.
4.2
Traderline cooperates with regulatory authorities and will comply with any lawful order directed at it. Traderline does not hold user funds or exchange accounts. Access to the exchanges is restricted by the exchanges themselves through their own compliance and geo-restriction infrastructure; on top of those restrictions, Traderline restricts access to its own website and applications from Portugal. If you believe your use of a supported exchange may conflict with the laws of your jurisdiction, you must not use Traderline.
4.3
Traderline does not target, market, or promote its services to residents of jurisdictions where the underlying exchange is not licensed or otherwise not permitted to operate. The availability of Traderline's website or applications in a given jurisdiction does not constitute an offer or invitation to use Traderline where doing so would be unlawful. Traderline's website is available in English and Brazilian Portuguese to serve its international user base; the availability of content in a given language does not constitute targeting of any specific country or jurisdiction.
4.4
Any fees collected by Traderline, including builder fees on supported exchanges, constitute compensation for the provision of software services and API infrastructure. They do not represent a commission on, or participation in, any gambling, trading, or investment outcome. Where fees are calculated on a per-order basis, this pricing model reflects the structure of the relevant exchange's builder or vendor program and is a standard method of pricing API-based software services.
4.5
Eligibility verification, including age verification, identity verification, and geographic restriction enforcement for trading, is performed by the underlying exchange, not by Traderline. Traderline relies on the exchange's own API-level controls and compliance infrastructure to restrict access from ineligible users and, on top of those restrictions, restricts access to its own website and applications from Portugal. Users who misrepresent their eligibility do so in violation of these Terms and the underlying exchange's terms of use, and bear sole responsibility for the consequences.

5. Data Protection

5.1
Traderline processes personal data in accordance with applicable data protection law, including Regulation (EU) 2016/679 (the General Data Protection Regulation). Details on what data is collected, how it is used, and your rights as a data subject are set out in our Privacy Policy.
5.2
Traderline does not sell, rent, or share personal data with third parties for marketing purposes.

6. Indemnification

You agree to indemnify, defend, and hold harmless Traderline, its operators, officers, employees, contractors, and affiliates from and against any claims, damages, losses, liabilities, costs, and expenses (including reasonable legal fees) arising out of: (i) your use of Traderline; (ii) your breach of these Terms; (iii) your violation of any law or regulation; (iv) your violation of any applicable exchange's terms of use; or (v) any false or misleading representation made under these Terms.

7. Modifications

Traderline may modify these Terms at any time by posting the revised Terms on its website. Material changes will be notified through the application or by email where provided. Continued use after the effective date constitutes acceptance.

8. Termination

Traderline may suspend or terminate your access at any time, with or without notice, for any reason, including breach of these Terms. Sections 2, 3, 4, 5, 6, and 9 survive termination.

9. Governing Law

These Terms are governed by the laws of Portugal, without regard to conflict of laws principles. Any dispute shall be resolved exclusively by the competent courts of Coimbra, except where mandatory consumer protection laws of your country of residence provide otherwise.

10. Consumer Information (Portugal)

In accordance with Law no. 144/2015, consumer disputes may be submitted to an alternative dispute resolution entity. The competent entities are the Centro de Arbitragem de Conflitos de Consumo da Região de Coimbra (CACRC), Av. Fernão Magalhães 240, 1.º, 3000-172 Coimbra (cacrc.pt), and the national residual entity CNIACC (cniacc.pt). More information at consumidor.gov.pt. Complaints may also be submitted through the Livro de Reclamações Eletrónico at livroreclamacoes.pt.

11. Contact

For any questions regarding these Terms, contact us at help@traderline.com.

Last Updated: 17 August 2026

These terms apply specifically to Traderline for Polymarket and supplement the General Terms. By using Traderline for Polymarket, you agree to both.

1. Eligibility and User Representations

By using Traderline for Polymarket, you represent and warrant that:

(a) You are at least 18 years of age and, if higher, you meet the minimum legal age required in your jurisdiction to access and use the services offered by Polymarket;

(b) You are not a resident of, located in, a citizen of, or organized under the laws of any jurisdiction where access to Polymarket is blocked or restricted, as set out in Polymarket's Terms of Use at polymarket.com/tos and as updated from time to time, including any jurisdiction where Polymarket permits closing positions only, for the purpose of opening new positions (the "Restricted Jurisdictions");

(c) You are not acting on behalf of, or under the direction of, any person located in a Restricted Jurisdiction;

(d) You are not listed on any sanctions list maintained by OFAC, the EU, or the UK;

(e) You are not using, and will not use or attempt to use, any technical or other means to conceal, falsify or misrepresent your location, identity or eligibility, or otherwise to circumvent, evade or interfere with any geographic, eligibility, sanctions or access restriction applicable to Traderline or Polymarket; and

(f) You will not assist, enable or facilitate any other person in doing anything prohibited by paragraphs (b) to (e).

Any breach of this Section is a material breach of these Terms and may result in immediate termination of your access.

2. Relationship to Polymarket

Traderline is an independent third-party interface that connects to Polymarket via the public Polymarket Builder Program. Traderline is not affiliated with, endorsed by, or operated by Adventure One QSS, Inc., Blockratize, Inc., or any Polymarket entity.

Your use of Polymarket is governed by Polymarket's Terms of Use at polymarket.com/tos, which you must independently review and accept.

3. Nature of the Builder Fee

Traderline charges no subscription and does not gate access. Orders you route to Polymarket through Traderline carry a per-order builder fee, calculated as a percentage of the order's traded value and shown to you before you confirm each order. The current rate is published on Traderline's Polymarket builder profile.

The builder fee is compensation for Traderline's software and API infrastructure — not a wager, stake, deposit, or commission on winnings, and not participation in any trading or investment outcome. Traderline holds no funds and is not a counterparty to your trade: you sign each order yourself with your own keys (an EIP-712 signed message), Polymarket matches and settles it on-chain, and the protocol attributes the fee to Traderline's builder profile. It is separate from any fees charged by Polymarket itself.

The current builder fee rate is publicly queryable through Polymarket's builder profile system. Traderline will provide at least 3 days' advance notice before any change to the builder fee rate, in accordance with Polymarket's Builder Program policies.

4. Wallet and Key Responsibility

You are solely responsible for the security, backup, and recovery of your private keys, wallets, and credentials. Traderline cannot recover, reset, or restore lost private keys.

If you import a private key originally generated through Polymarket's email login (Magic Link), you acknowledge that the key, once exported, is no longer recoverable through Polymarket's email recovery process.

Traderline takes reasonable measures to secure the application and protect user data. However, the ultimate responsibility for safeguarding your private keys and wallet credentials remains with you.

5. Trading Risk and No Advice

Trading on prediction markets involves substantial risk of loss. Contracts traded on Polymarket are experimental, volatile, and irreversible. You may lose the full amount of any cryptoassets used to enter into a Contract.

Traderline does not provide investment, legal, tax, or financial advice. All information displayed in Traderline is for informational purposes only. You are solely responsible for your trading decisions.

6. Portugal Restriction

Traderline for Polymarket is not offered, marketed or made available for use in Portugal or by persons resident in Portugal. You must not download, access or use Traderline for Polymarket while located in Portugal or if you are resident in Portugal. Traderline may use technical and compliance measures to verify geographic eligibility and may block or terminate access where eligibility cannot be established or where circumvention is detected or reasonably suspected. For the purposes of Section 1, Portugal is a Restricted Jurisdiction.

Last Updated: 11 August 2026

These terms apply specifically to Traderline for Betfair and supplement the General Terms. By using Traderline for Betfair, you agree to both.

1. Relationship to Betfair

1.1
Traderline for Betfair is an independent third-party application listed in the Betfair App Directory as part of the Betfair Vendor Program. Listing in the App Directory does not constitute or imply any form of endorsement or recommendation by Betfair. Betfair accepts no responsibility for any loss, direct or indirect, suffered as a result of using Traderline.
1.2
Your use of the Betfair Exchange is governed by Betfair's Terms and Conditions at betfair.com/aboutUs/Terms.and.Conditions, which you must independently review and accept. Your relationship with Traderline is separate from your relationship with Betfair.

2. Account and Jurisdiction Requirements

2.1
You must hold an active Betfair account to use Traderline for Betfair. Traderline for Betfair is not available to residents of Portugal or any other jurisdiction where the Betfair Exchange restricts access or does not operate.
2.2
Traderline for Betfair is provided free of charge. There are no subscription fees, licence fees, or usage charges. Traderline for Betfair is a client application for the Betfair Exchange that integrates additional features and tools, some of which are not available on Betfair's platform, to support user control and efficiency in trading.
2.3
The same geographic restrictions enforced by the Betfair Exchange apply when using Traderline for Betfair. Betfair determines which jurisdictions it serves based on its own licensing and regulatory obligations. Traderline defers to Betfair's own geo-restriction controls, which are enforced at the API level. You are responsible for independently verifying that your use of the Betfair Exchange is lawful in your jurisdiction.
2.4
Traderline does not market or promote Traderline for Betfair to residents of jurisdictions where Betfair does not operate or restricts access.

3. Credential Storage and Privacy

3.1
Traderline does not have visibility of your Betfair username, password, or any other sensitive data that may link you to a Betfair account. All authentication happens directly between the application on your device and the Betfair API over a secure channel.
3.2
If you choose to store your Betfair credentials locally on your device, they are encrypted. Traderline never transmits, stores, or processes your credentials on our servers, and the application does not communicate with the Betfair API through any proxy.

4. Responsible Gambling

4.1
The Betfair Exchange operates under licences issued by gambling regulators including the UK Gambling Commission and the Malta Gaming Authority. By using Traderline for Betfair, you acknowledge that all betting and trading activities are subject to the responsible gambling rules and regulations of the relevant licensing authorities.
4.2
Traderline does not encourage excessive or irresponsible gambling. If you believe you may have a gambling problem, we encourage you to use the responsible gambling tools provided by Betfair, including deposit limits, self-exclusion, and time-out features, accessible through your Betfair account.

5. Affiliates

5.1
Affiliates are bound by these Terms and by their separate Affiliate Agreement. Affiliates must not promote, advertise, or direct traffic regarding the Polymarket product to any person in a jurisdiction where prediction-market trading is restricted, and must not promote the Betfair product where Betfair is not licensed. Affiliates must make no representation as to trading profitability, returns, or edge; must include an 18+ and responsible-gambling notice and a clear advertising/affiliate disclosure on their channels; and must not target minors or use venue trademarks as an endorsement.
5.2
Traderline may audit affiliate channels at any time and will terminate the arrangement and withhold unpaid commissions on any breach, on any promotion into a restricted territory, or on any regulator contact concerning the affiliate's activity. On termination the affiliate must remove all Traderline and venue references within 48 hours.
Last Updated: 17 August 2026

This Privacy Policy describes how Mythical Technologies, Lda (VAT 513557849, Coimbra, Portugal) processes personal data in accordance with Regulation (EU) 2016/679 (GDPR). Contact: help@traderline.com.

1. Data We Collect and Why

1.1
Email address — collected when you subscribe to communications or contact support. Legal basis: consent (newsletter) or legitimate interest (support).
1.2
Website analytics — Google Analytics collects anonymised usage data (pages visited, browser type, approximate location). Analytics cookies require your consent and are only placed after you accept them. You may withdraw consent at any time through your browser settings or by clearing cookies. Legal basis: consent.
1.3
Crash reports — Sentry collects diagnostic data (device type, OS, app version, error details) when the application encounters an error. Legal basis: legitimate interest in software quality.
1.4
Exchange credentials and private keys are stored locally on your device. Traderline does not transmit or store this data on its servers.
1.5
My Predicts and Leaderboard (optional) — If you use My Predicts, we associate your chosen display name and your predictions with your wallet address so they can be shown on the Leaderboard. This information is public by design. Traderline does not create accounts and does not store passwords; identification is by wallet signature. Legal basis: performance of a contract. Exchange credentials and private keys remain stored locally on your device (see 1.4).

2. Third Parties and International Transfers

Data may be processed by Google (analytics), Sentry (crash reports), and our email service provider (newsletters). Some of these services are based in the United States; where data is transferred outside the EEA, appropriate safeguards (Standard Contractual Clauses or equivalent) are in place. We do not sell or share personal data for third-party marketing.

3. Retention

Email addresses are retained until you unsubscribe. Analytics data is retained for up to 14 months. Crash reports are retained for up to 90 days. Support correspondence is retained for up to 24 months. My Predicts data is retained while you use the feature; you may request its removal at help@traderline.com.

4. Your Rights

Under the GDPR you may request access to, rectification of, or erasure of your personal data, restrict or object to processing, or request data portability. You may withdraw consent at any time. Contact help@traderline.com; we will respond within 30 days. You also have the right to lodge a complaint with the CNPD (cnpd.pt) or your local supervisory authority.