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Message: [QUOTE="Shamiso, post: 93180, member: 160"] ElevenLabs API keys authenticate requests through the xi-api-key header and charge usage against the workspace quota connected to the key. To get one, sign in, open Developers in the left sidebar, choose API Keys, create a named key, and copy the secret immediately. ElevenLabs only shows the full key when it is created, so losing that value means creating another key rather than revealing the old one again. An ElevenLabs API key can be free because most API endpoints are available on the free plan and consume the credits attached to that account. Free access does not make every product feature free, and some APIs or higher-quality output still depend on plan limits or Pay As You Go access. The [URL='https://goldmidi.com/community/threads/elevenlabs-and-the-economics-of-ai-voice.76571/'][B]economics of AI voice[/B][/URL] matter after authentication works because the key is the meter that connects requests to usage. [HEADING=2]Restrict the key before you use it[/HEADING] New user keys are restricted by default. ElevenLabs lets you choose which API capabilities the key may call, set an optional credit quota, and restrict requests to approved public IP addresses. A request from an address outside that allowlist is rejected with a 403 response. The safest setup is therefore narrower than simply creating a key and turning every permission on. Give the application only the endpoints it needs and set a spending boundary that fits the job. For a small integration, a low monthly key quota can catch a loop or runaway retry before it consumes the workspace balance. Workspace resources can have their own access boundaries as well. A production process does not need every voice or project visible to every credential. [URL='https://goldmidi.com/community/threads/licensed-ai-voices-can-carry-technical-limits.77632/']Service-account access can be kept narrow[/URL] by sharing only the required resources with the service account that runs the application. ElevenLabs recommends service-account API keys for backend systems and automation because they are not tied to an individual employee remaining in the workspace. User API keys suit personal scripts and development, but they follow the user who owns them. They can also be given an expiry from 15 minutes through 30 days, while service-account keys are intended to be long-lived. If a person leaves the workspace or their access changes, a user key can be affected with them. A backend that must survive staff changes should not quietly depend on one developer’s personal credential. [HEADING=2]Keep the secret off the client[/HEADING] Do not place an ElevenLabs API key in browser JavaScript, a shipped mobile app, or public game code. Anyone who extracts it can make requests against the same account and consume its credits. ElevenLabs explicitly recommends keeping the key secret, while its quickstart stores the value as a managed secret or environment variable rather than embedding it in source. Certain client-side connections can use short-lived single-use tokens instead of exposing the master credential. Public repositories deserve extra care. ElevenLabs participates in GitHub secret scanning, and a detected public key can be disabled automatically when the key permits third-party disabling. Rotation is the clean recovery path after exposure. Create the replacement, move the application to it, verify requests, and then delete the old key. Keeping billable calls efficient still matters afterward, and [URL='https://goldmidi.com/community/threads/tts-caching-saves-money-until-the-cache-lies.76678/']TTS caching can avoid repeat generations[/URL] when the exact text, voice, model, and effective settings genuinely match. A credit limit is a guardrail rather than a cost optimization strategy. Model choice, retries, repeated synthesis, and traffic shape still determine how quickly a working credential burns through its allowance. The practical controls for [URL='https://goldmidi.com/community/threads/how-to-cut-an-ai-voice-bill-without-losing-quality.76574/']cutting an AI voice bill[/URL] belong beside the key limit, especially once an application is generating at scale. [HEADING=2]Diagnose the status code before rotating[/HEADING] A nonworking ElevenLabs API key doesn't always need replacing. An expired user key is rejected with a 401 response, while an otherwise valid key used from an unapproved IP can produce a 403. A 422 usually points elsewhere, such as an invalid request shape or unsupported parameter, so regenerating the credential can leave the real problem untouched. ElevenLabs also exposes request identifiers that help trace failed API calls. Test the credential with a small server-side request before debugging an entire framework integration. Confirm that the request sends the key in the xi-api-key header, that the selected permission covers the endpoint, that the account has usable credits, and that the source IP satisfies any allowlist. A working key proves authentication, not every right surrounding the product. The same boundary appears when [URL='https://goldmidi.com/community/threads/an-eleven-music-api-key-does-not-grant-resale-rights.76705/']API access and resale permission diverge[/URL], so a successful request should never be treated as automatic permission to expose the underlying service to other users. [/QUOTE]

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