> For the complete documentation index, see [llms.txt](https://guides.stellaraio.com/stellar/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.stellaraio.com/stellar/navigating-stellaraio/what-is-the-settings-tab/captcha-service-settings.md). # Captcha Services **Settings → Captcha** connects Stellar to supported third-party captcha-solving services. A captcha is a challenge a website uses to check a visitor. Some task setups use an external service to solve supported challenges. ![](https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQL0BOlyqRRf7zyNKSf%2Fuploads%2F0iiId2AppzABH9hpNBaq%2Fclipboard.png?alt=media\&token=ddd508a5-c5e8-43da-b5e4-3eb7651b8903) Stellar 4.0 captcha settings ### Do I need this? Follow your retailer guide first. You do not need to create accounts with every provider or fill every field. Choose a service supported by your task setup. ### Connect a provider 1. Create or sign in to the provider's account. 2. Copy its API key from its dashboard. An API key lets Stellar access that service on your behalf. 3. Paste the key into the matching field in Settings → Captcha. 4. Use **Get Balance** beside the field and make sure the account has funds for solving captchas. * **CapMonster:** Create an account at [CapMonster](https://capmonster.cloud/en/), copy the API key from its [dashboard](https://capmonster.cloud/Dashboard), and paste it into **CapMonster Key**. * **CapSolver:** Create an account at [CapSolver](https://www.capsolver.com/), copy the key from its [dashboard](https://dashboard.capsolver.com/), and use **CapSolver Key**. * **2Captcha:** Create an account at [2Captcha](https://2captcha.com/?from=10708313), copy the key from its [dashboard](https://2captcha.com/enterpage), and use **2Captcha Key**. * **AntiCaptcha:** Create an account at [AntiCaptcha](https://anti-captcha.com/mainpage), copy the key from its [dashboard](https://anti-captcha.com/clients/reports/dashboard), and use **Anticaptcha Key**. The page accepts CapMonster, CapSolver, AntiCaptcha, and 2Captcha. Poseidon is no longer supported in 4.0. ### How this differs from Captcha Harvesters A Captcha Harvester is a browser window managed from Stellar's **Harvesters** tab. It is a different setup from entering a third-party API key here. For Pokémon Center's AI autosolve setup, use **hCaptcha AI Solver** in a Captcha Harvester and follow the retailer/harvester guide. There is no separate server-side AI option. Google Chrome is required for Captcha Harvesters. AYCD AutoSolve is configured in **Settings → AYCD**, not in these provider fields. ### Keep your keys private Do not post API keys in screenshots or public channels. If a connection fails, check the correct provider field, copied spaces, key validity, and balance before changing your task setup. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://guides.stellaraio.com/stellar/navigating-stellaraio/what-is-the-settings-tab/captcha-service-settings.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.