The Yes or No Generator is a local browser alternative to a hosted yes/no API for manual prompts, but it does not expose a callable API. Use it when you want one casual answer, a local decision prompt, or a short record of recent results. It runs entirely in the current browser tab.
The Yes or No Generator accepts an optional question, generates a Yes or No with browser Web Crypto, and shows a newest-first history of up to 20 entries. The question, answers, and history are never uploaded to Lizely, are not written to an account, and do not go to a remote service. However, there is no endpoint for an application to call, no SDK, and no documented machine-readable response contract. If a product must request many answers automatically, a local browser interface is not a drop-in substitute for API integration.
What an API alternative can—and cannot—replace
Searchers often use “API alternative” in two ways. For a person, it means a tool that returns a binary result without requiring a hosted service. For a developer, it can mean a callable replacement that another program can invoke repeatedly. The distinction is functional, not cosmetic: a page with a Generate button cannot satisfy an endpoint dependency.
- For a one-off prompt, the local tool removes the need for an API key, quota, hosted endpoint, or remote copy of the question.
- For a script, spreadsheet formula, server job, or mobile backend, you still need an actual callable interface or your own code using a supported cryptographic random source.
- For repeated automated decisions, verify the service’s response schema, error behavior, authentication rules, privacy policy, and uptime rather than assuming every yes/no endpoint offers the same contract.
Using the browser-based alternative
The supported workflow is short, but its boundaries matter when comparing it with a hosted tool.
- Open the generator and enter a low-stakes question if you want the result labeled. The field is optional, so an empty question is valid. The maximum is 1,000 UTF-16 code units; the exact limit is accepted, while one code unit beyond it fails without truncation or generation.
- Review the wording and select Generate Yes or No. If you edit the question after generating, the prominently displayed current answer and any prior error are cleared so an old result is not mislabeled. Editing does not remove earlier history entries.
- Read the current answer. Each normal generation obtains a new random Uint32 draw from the browser’s Web Crypto implementation. If Web Crypto is missing, blocked, or throws, the tool reports a clear failure and produces no answer.
- Use the newest-first history when you want to compare recent prompts. It keeps at most 20 entries. After the 21st generation, the oldest entry is removed and a cumulative message states exactly how many earlier answers have been discarded.
- Clear the history when finished. Clearing resets the visible entries, the discarded-answer count, and the current answer.
Keep the use casual. The generator supplies a random binary result, not advice about whether the question is sensible, what the available options mean, or what consequences should follow.
Why the yes/no mapping is balanced
Internally, one call to Crypto.getRandomValues fills a one-element Uint32Array, yielding an integer from 0 through 4,294,967,295. The mapper computes the largest multiple of the outcome count that does not exceed the 2^32 source range: limit = floor(2^32/N) × N. For N = 2, floor(2^32/2) × 2 = 2^32, so every valid Uint32 is accepted; the accepted value modulo 2 then decides the answer. Even values produce Yes and odd values produce No, assigning exactly half of the source range to each outcome.
For a general finite outcome count, values at or above that limit are rejected and accepted values are mapped with modulo. Rejection sampling prevents lower indexes from receiving an extra source value when the range does not divide evenly. A bounded 128-draw loop stops a broken injected or platform source from hanging forever. In ordinary two-outcome use, division is exact, so no valid Uint32 needs rejection. Deterministic tests separately verify the rejection path at a three-outcome boundary; injected values are a test seam, not a user-facing input.
Nothing about the optional question changes the next draw. Question text, prior answers, history, and time are not inputs to the mapping. The browser implementation chooses its own underlying generator, so the tool does not expose that algorithm or claim access to physical true randomness. The W3C Web Cryptography specification defines getRandomValues, and MDN’s Crypto.getRandomValues documentation describes its browser use.
Local browser use versus an API dependency
Choose by the requirement you need to satisfy rather than by the word “alternative.”
| Requirement | Local Yes or No Generator | Actual API or Custom Code |
|---|---|---|
| Primary use | Manual, casual prompts in one browser tab | Repeated automated requests from software |
| Interface | Visible Generate button, answer, and local history | Callable endpoint or function with a documented response |
| Data path | No upload to Lizely and no remote write | Depends on the provider or your own server design |
| Credentials | No account or API key | Provider-specific or defined by your implementation |
| Failure model | Clear failure and no answer if Web Crypto is unavailable or blocked | Network, provider, configuration, or application errors |
| Output destination | On-screen answer and up to 20 history entries | Machine-readable result subject to the API contract |
Because the local route makes no network call and requires no account, it avoids API-key distribution, hosted quotas, and dependence on a remote service’s uptime. The tradeoff is that every prompt is a manual browser action, and the result is not pushed into another system automatically.
When an actual API integration is necessary
If software needs machine-readable results, treat the browser page as a reference workflow rather than an SDK. For the underlying technique, the guide to generate a Yes or No answer with Web Crypto shows the code-level approach; for a hosted service, confirm the provider’s current contract directly.
- Define the interface. Specify whether callers can submit a question, what the result and error fields contain, and whether requests are single calls, batches, or streams.
- Choose and document the random source. Use Web Crypto where the runtime provides it. If it is unavailable, return an explicit error instead of silently changing to Math.random, because a hidden fallback makes the stated methodology unreliable.
- Set operational rules. For a public endpoint, decide on authentication, rate limits, HTTPS, CORS if browsers call it, logging, retention, and abuse controls. Treat these as requirements for the service you build, not features supplied by the browser generator.
- Test the boundary behavior. Check odd and even source values, confirm that every request performs a new draw, and exercise the failure path. The browser generator uses this parity mapping, but a public endpoint also needs its own contract, monitoring, and documentation.
Privacy and explicit failure behavior
The local workflow keeps the question, answers, and history in the current browser tab. Text is stored locally as entered; trimming is used only to decide whether the history displays the label “No question.” Nothing is written to an account or remote service, and no dependency, network call, Clipboard API, file, or ObjectURL is required.
The result is shown on screen in the current browser tab. When Web Crypto fails, the tool produces no answer and adds no history entry. Its refusal to substitute Math.random is intentional: an explicit failure is easier to detect than a result generated by a different random source than the one displayed.
Use limits that randomness cannot solve
Do not use this tool—or a yes/no API by itself—for medical, legal, financial, safety-critical, emergency, security, consent, employment, eligibility, compliance, or other high-stakes decisions. A mathematically balanced output does not validate the question, identify missing options, understand consequences, or supply professional judgment.
Repeated Yes or No results are also normal. Independent 50/50 draws can produce streaks, and the history is descriptive only: it does not rebalance later answers, force alternation, learn preferences, weight alternatives, guarantee fairness in a small sample, or predict future results. A new draw is not evidence that a particular answer is wise.
Bottom line: the Yes or No Generator is an appropriate local substitute for a hosted API when the task is a casual, manual prompt. For software-to-software calls, use a documented endpoint or implement the random mapping yourself; do not treat the browser interface as an API client.