# Research a third-party API before integrating it in Nim with Atlas in 2026

> Atlas empowers Nim developers to accurately research external API documentation using websearch and webfetch, ensuring integrations are based on current specifications.

Nim developers in 2026 can leverage Atlas to efficiently research the current shape of a third-party API before writing any integration code, avoiding guesswork. Atlas uses tools like websearch and webfetch to retrieve up-to-date documentation, then helps you draft code, verify against your codebase with grep, and format with nph before committing changes via nimble.

## Key takeaways

- Atlas uses websearch and webfetch to efficiently research third-party API documentation for Nim projects.
- Atlas integrates directly with Nim's toolchain, including nimble, nimble test, and nph, for development and verification.
- Permission prompts, unified diffs, and grep ensure safety and adherence to Nim codebase conventions during API integration.
- Atlas indexes Nim code by AST declarations, understanding nimble packages and exported symbols for precise context.
- Local Ollama embeddings allow Nim developers to keep their project code private while using Atlas's AI capabilities.

## How Atlas researches external APIs for Nim projects

In 2026, Atlas streamlines the initial research phase for Nim developers integrating third-party APIs. It employs websearch to locate the most current documentation pages, injecting the current year into its queries to prioritize fresh sources. This ensures that the API shape gathered is up-to-date, preventing integration issues.

When a Nim developer needs to integrate a new third-party API, the first step is understanding its current structure and behavior. Atlas facilitates this by using its websearch tool to find relevant documentation. This tool is designed to bias towards fresh sources by injecting the current year, 2026, into its search description, ensuring the information retrieved is not outdated. Once a promising URL is identified, Atlas can then use webfetch to retrieve the actual content of the documentation page. The webfetch tool supports format negotiation, allowing Atlas to request the content in markdown or plain text, which often provides a more compact and parseable representation for the agent. Before any external request is made, Atlas presents a permission prompt, displaying the URL as the pattern, requiring explicit approval from the Nim developer. This permission gating ensures that no context is exfiltrated to arbitrary hosts without consent, maintaining the security and privacy of the Nim project. This research phase is crucial for Nim developers to get the current shape of an external API into context, instead of guessing from memory, laying a solid foundation for accurate integration.

## Integrating API knowledge into Nim code with Atlas

After researching an external API, Atlas assists Nim developers in 2026 with writing the actual integration code. It uses the write or edit tools to draft new Nim modules or modify existing ones, directly incorporating the real API signatures discovered during the research phase. This process ensures accuracy from the start.

Once Atlas has successfully fetched and processed the external API documentation, it can proceed to help the Nim developer integrate this knowledge into their codebase. Atlas leverages its write or edit tools to generate or modify Nim source files, such as those within a nimble package. The agent can draft new Nim modules, define procedures, types, and constants that mirror the external API's signatures, ensuring the integration is precise. For instance, if the API requires specific data structures, Atlas can define corresponding Nim objects or tuples. Atlas understands Nim's structure, including exported symbols marked with an asterisk and requires lines in the nimble file, allowing it to generate idiomatic Nim code. Furthermore, Atlas can assist in setting up verification for the new integration. It can be asked to add a suite and check block from Nim's std/unittest module under the tests/ directory, creating a robust testing framework. Before committing any changes, Atlas can run nimble test behind a permission prompt, allowing the Nim developer to confirm the new integration functions as expected within the project's existing test suite.

## Ensuring Nim code quality and safety with Atlas

Atlas provides multiple layers of safety and quality assurance for Nim developers in 2026, particularly when integrating new APIs. Every Atlas tool call, including webfetch and nimble test, is permission-gated, requiring explicit approval. This prevents unintended actions and maintains control over the development process.

Safety and code quality are paramount when modifying a Nim codebase, especially for new API integrations. Atlas implements several mechanisms to ensure this. Firstly, every Atlas tool call, whether it is webfetch to retrieve documentation or nimble test to run unit tests, is permission-gated. This means the Nim developer must explicitly approve the action based on allow, ask, or deny rules before it executes, preventing any unauthorized operations. When Atlas drafts a plan, it does so in a read-only plan agent and asks for approval before switching to a build agent to make changes. For any file edits, Atlas computes a unified diff and surfaces it for approval, giving the Nim developer a clear view of proposed changes before they are written to disk. After writing or editing Nim modules, Atlas can verify the new code against the repo's own conventions using grep, ensuring the integration adheres to established patterns and styles within the codebase. Finally, Atlas can format the touched Nim modules with nph, Nim's standard formatter, ensuring consistent code style. Atlas also reads git branches, status, and diffs, and can stage and create commits on your behalf, providing a comprehensive and controlled development workflow for Nim projects.

## Steps

1. Run Atlas in your Nim package directory, ensuring a .nimble file is present for Atlas to read your modules and dependencies.
2. Ask Atlas to find the current API documentation page using the websearch tool, which biases towards 2026 sources.
3. Fetch the documentation page with the webfetch tool, specifying 'format markdown' or 'format text' to get a compact representation, and approve the permission prompt with the URL.
4. Read the fetched content, then instruct Atlas to write or edit Nim modules using the write or edit tools, incorporating the real API signatures into your Nim code.
5. Verify the newly written or edited Nim code against your repository's own conventions using the grep tool to ensure consistency.
6. Ask Atlas to add a suite and check block from Nim's std/unittest module under your tests/ directory for the new integration.
7. Let Atlas run nimble test behind a permission prompt to verify the integration functions correctly within your Nim project's test suite.
8. Have Atlas format the touched Nim modules with nph to maintain consistent code style across your project.
9. Review the unified diffs presented by Atlas for all file edits and approve them before Atlas stages and creates commits on your behalf.

## FAQ

### How does Atlas find current API documentation for Nim?

Atlas uses its websearch tool, which injects the current year, 2026, into its queries. This biases the search results towards fresh sources, ensuring Nim developers receive the most up-to-date API documentation for their integration tasks.

### Can Atlas help me write Nim code based on API documentation?

Yes, after fetching documentation with webfetch, Atlas can use its write or edit tools to draft Nim integration code. It incorporates real API signatures into your Nim modules, ensuring accuracy and adherence to the external API's specifications.

### How does Atlas ensure my Nim code changes are safe?

Atlas provides permission prompts for all tool calls, computes unified diffs for every file edit for your approval, and can verify against Nim codebase conventions using grep. This multi layered approach ensures controlled and safe modifications.

### Does Atlas support Nim's testing and formatting tools?

Absolutely. Atlas can be asked to add std/unittest blocks, run nimble test behind a permission prompt to verify functionality, and format touched Nim modules with nph to maintain consistent code style.

### How does Atlas handle privacy for my Nim project code?

Atlas can build its code index with local Ollama embeddings. This capability ensures that your Nim project's source code remains on your local machine, preventing it from being sent to third-party servers and enhancing privacy.

### What Nim specific elements does Atlas understand?

Atlas indexes Nim code by AST declarations using tree-sitter. It understands nimble packages, compile time macros, and exported symbols marked with an asterisk, providing a deep and precise contextual understanding of your Nim codebase.

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Licence: Atlas is proprietary with a free core. It is not open source and there is no public source repository.
