GenerateSpecs is a product specification (Spec / PRD) generation service for AI coding agents. Its core idea is this: if agents are given only a short prompt to develop an application, they will guess at the architecture on their own and miss key details, resulting in nothing more than a prototype at best; but if they are given a detailed specification containing the architecture, database design, complete features, and build plan, they can use it to build an application close to production grade in one pass.
Purpose and Positioning The problem GenerateSpecs solves is "turning ideas into highly detailed specification documents that AI agents can execute." Users first describe their requirements, then the agent asks several interview questions, and after the user answers, the generation process begins. The specification is generated in about 60 to 90 minutes (the page also has a "generated in 1-3 hours" label), and users can watch the generation process in real time on the page. Once complete, it is sent to their inbox by email.
What the Specification Document Contains Each specification document is 6,000 to 12,000 lines, is a Markdown file, and is divided into eight sections:
- System architecture: the main components and the reasons they exist.
- Database schema: the complete design of every table, column, and relationship.
- Tech stack: lists and justifies every framework and library.
- Design patterns and style guide: conventions and visual style details.
- Screen-by-screen features: specifies every interface and every feature.
- API endpoints: defines the input and output of every endpoint.
- Security: authentication, privacy, and the protections a real product needs.
- AI agent build instructions: detailed milestones and the build steps for the agent to execute in order. It is officially stated that the specification covers the parts where real products tend to run into problems: databases, APIs, login, payments, error handling, security, and execution order. If the user specifies the tools they want to use, the specification will use them; if not, the agent will choose "boring and popular" technologies to reduce the probability of coding agents making mistakes.
How to Use It After the specification is generated, it can be used with any agent harness. Official examples include Claude, Codex, or CRHQ. The page provides prompt templates for Claude and Codex, instructing them to act as the orchestrator, use sub-agents, maintain a progress.md progress file, and strictly follow the milestones and implementation steps in the specification until 100% completion.
The Accompanying Build Process (CRHQ Project Builder) The document introduces the second stage: handing the specification to the Project Builder, which will split the planFor each task, build step by step, have it tested by a new agent that did not write the code, and conduct two rounds of code review against the specification. Its lifecycle includes: 01 Implementation (build each milestone in specification order), 02 QA and testing (run the app and check it against the specification), 03 code review, 04 second-round code review, 05 polish, 06 specification review and gap closure. It is officially said that Project Builder can turn a detailed specification into a complete, usable product in one long session (typically 12 to 24 hours of build time). Project Builder's loop code will be released on GitHub.
Pricing and free policy The official policy is stated as a one-time payment, with no subscription. The price rises in tiers as sales increase: the first 20 copies are $29, then $49, then $69, and it stays at $69; users pay the price in effect at the time of generation, and the price only goes up, never down. The first 100 copies are free, each publicly and permanently published, limited to one per GitHub account, and the account must be at least 6 months old; free users receive the same specification as paying users, but skip the paid queue; paid specifications are private, visible only to the purchaser, and can be used by them. The official statement is clear: one payment purchases one specification, it is written only once, and there are no revision rounds; if an interruption is caused by their own issue, it can be rerun for free.
Licensing and public policy Public specifications use the CC BY 4.0 license, and anyone may read, build, or sell the products built from them, but must credit GenerateSpecs.com. Paid private specifications belong exclusively to the user, are not published by the official service, and no rights are claimed over what is built from them.
Other information The page provides examples of completed specifications, such as an all-in-one online forms platform, LinkHub (link pages, branded short links and dynamic QR codes), a testimonials and social proof platform, an asynchronous product demo and screen recording platform, a privacy-first PDF toolkit, a macOS/Windows streaming voice dictation app, a lightweight CRM, and more. There is also canivibecodeit.com, which tracks which SaaS products can be rebuilt with AI. Founder Andrej Šimunaj comes from Zero Point Studio (zeropointstudio.io), and used this process to build Zillapi.com, StayingAPI.com, and GenerateSpecs.com, running on the CRHQ.ai platform.
Limitations The official description states: no revision rounds, one specification per payment; free specifications are public and limited to one per GitHub account(the account must be at least 6 months old); paid specifications are private. After generation, the built app still needs human review. The specific supported programming languages, framework scope, refund details, and similar information are not yet provided.
