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Claude Prompt to Generate Documentation from Code

Build an AI documentation pipeline: module docs, architecture overview, API reference, getting-started guide, glossary, and a freshness checker.

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Your Prompt
prompt.txt
Create a documentation generation pipeline using AI for a TypeScript project with 40 components. The documentation should target new team members and external API consumers and follow Diátaxis (tutorials, how-to, reference, explanation) conventions. Execute these steps: 1) Design prompts that extract module-level documentation from source files — for each module, the AI should identify the public API, describe each function purpose and parameters, note side effects, and provide a usage example. 2) Generate an architecture overview document by feeding the AI the project directory structure, key configuration files, and dependency graph — it should produce a high-level diagram description, component interaction map, and data flow narrative. 3) Create API reference documentation for 35 endpoints by analyzing route definitions, middleware, request validation, and response schemas — output in Markdown with OpenAPI 3.1 specs format with request/response examples. 4) Build a getting-started guide that walks a new developer through cloning, installing dependencies, configuring DATABASE_URL, API_KEY, REDIS_HOST, S3_BUCKET, running the project, and making their first change. 5) Generate a glossary of domain-specific terms by scanning model names, enum values, and business logic comments across the codebase. 6) Create a troubleshooting section by analyzing error handling patterns, common exception types, and log messages to document the most likely failure modes and their resolutions. 7) Output a documentation freshness checker script that compares source file modification dates against doc file dates and flags stale documentation.

What this prompt does

This prompt builds an AI-driven documentation pipeline for a [language] project with [component_count] components, targeting [audience] and following [doc_standard] conventions. Instead of asking for one document, it defines seven generation steps, each with prompts tuned to a different documentation artifact — so the output is a repeatable system, not a one-off page.

The structure works because each step feeds the model the right source signal. Module docs come from source files; the architecture overview comes from directory structure, config files, and the dependency graph; API reference for [api_count] endpoints comes from route definitions and response schemas, rendered in [doc_format]. A getting-started guide walks a new developer through setup including [env_vars], a glossary is mined from model and enum names, and a troubleshooting section is derived from real error-handling patterns. The final step — a freshness checker that compares source and doc modification dates — is what keeps the whole set from rotting after the first pass.

When to use it

  • You have undocumented or thinly documented code across [component_count] modules.
  • You need an API reference for [api_count] endpoints generated from real route definitions.
  • You want an architecture overview that matches the actual directory and dependency structure.
  • You are onboarding new developers and need a reliable getting-started guide.
  • You want docs structured to a standard like [doc_standard] rather than ad hoc.
  • You need a way to detect when documentation has gone stale.

Example output

Expect a pipeline of prompts plus their intended outputs, not a single page. The first stage yields per-module documentation listing the public API, parameter descriptions, side effects, and a usage example for each module. The architecture stage produces a high-level diagram description, a component interaction map, and a data-flow narrative. From there you get API reference entries in [doc_format] with request and response examples, a getting-started guide covering cloning, dependency install, and [env_vars], a domain glossary mined from model and enum names, a troubleshooting section keyed to common failure modes, and a freshness-checker script that flags any doc older than the source it describes.

Pro tips

  • Feed the architecture step the real directory tree and dependency graph; its accuracy depends entirely on that input.
  • Set [doc_format] to match your toolchain (for example Markdown with OpenAPI specs) so the API reference drops straight into your docs site.
  • Keep [env_vars] complete and current — a getting-started guide that misses one variable will block every new hire.
  • Use the freshness checker on a schedule, not once; it is the step that prevents documentation rot.
  • Pick a [doc_standard] like Diátaxis up front so tutorials, how-tos, reference, and explanation stay cleanly separated.
  • Review the generated glossary against your real domain terms; the model mines names well but can miss intent behind them.

Frequently Asked Questions

How does it make the architecture overview match my real system?
It generates the overview from concrete inputs you provide — the project directory structure, key configuration files, and the dependency graph. Because it reasons from your actual layout rather than assumptions, the component map and data-flow narrative reflect how the system is really wired.
What documentation standard does it follow?
Whatever you set in `[doc_standard]`. The default is Diátaxis, which separates tutorials, how-to guides, reference, and explanation, but you can specify another convention and the structure of the generated docs will follow it.
What does the freshness checker actually do?
It outputs a script that compares each source file's modification date against the corresponding documentation file's date and flags docs that are older than the code they describe. This is what stops the documentation from silently drifting out of date after the initial generation pass.
Can it generate API reference for a REST API?
Yes. You point it at your route definitions, middleware, request validation, and response schemas for `[api_count]` endpoints, and it produces reference entries in `[doc_format]` with request and response examples. Review the schemas it infers, since edge-case fields are sometimes missed.
Engr Mejba Ahmed

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Engr Mejba Ahmed

AI Developer · Software Engineer

I'm Mejba — I design and ship production AI systems, automations, and full-stack apps. If you want this turned into a working solution for your team, let's talk.

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