How does Atlas prevent context window issues when auditing a large Solidity repo?

Atlas launches parallel subagents in their own sessions, ensuring their file dumps never enter your main context window. Only their conclusions return, allowing comprehensive sweeps of large Solidity codebases without overload.

Can Atlas modify my Solidity contracts during an audit?

For audits, Atlas recommends the `explore` subagent type, which is deny-by-default and read-only. This ensures no changes are made to your Solidity contracts without explicit approval in the main session.

What Solidity tools does Atlas integrate with for auditing?

Atlas integrates deeply with the Foundry toolchain. It can read your contracts, storage layout, and libraries installed by `forge soldeer`, and can run `forge test`, `forge snapshot`, and `forge fmt` behind permission prompts.

How do I review the impact of Atlas's suggested Solidity fixes?

Atlas computes a unified diff for every file edit and surfaces it for approval. For Solidity, you can have Atlas run `forge snapshot` to see the gas delta before approving, ensuring you understand the cost implications.

How does Atlas ensure security when running commands in my Solidity project?

Every Atlas tool call is permission-gated against allow, ask, and deny rules before it runs. Atlas also drafts a plan in a read-only plan agent and asks for approval before switching to a build agent to execute commands in your Solidity environment.

Can Atlas help me write fuzz tests for my Solidity contracts?

Yes, Atlas can write a fuzz test in your `test/` directory and run `forge test` behind a permission prompt, helping you improve the test coverage and security of your Solidity smart contracts.

Does Atlas support local embeddings for Solidity code indexing?

Yes, Atlas can build its code index with local Ollama embeddings, keeping your sensitive Solidity code off third-party servers and ensuring privacy during the audit process.

Audit a Solidity Repo with Parallel Subagents in Atlas, 2026

Atlas empowers Solidity developers in 2026 to sweep an entire repository for a class of problems without blowing the main session's context window by launching parallel subagents. This approach allows you to audit your Foundry project's `src/` directory, identify issues, and even suggest fixes like adding reentrancy guards or converting `require` strings to custom errors, all while integrating direct with `forge test` and `forge fmt`.

How to audit Solidity code with parallel subagents in Atlas

Atlas allows Solidity developers to sweep an entire repository for problems without blowing the main session's context window by launching parallel subagents. This method is ideal for large Foundry projects, enabling 2026 developers to efficiently review multiple contract files concurrently and identify issues like reentrancy vulnerabilities or gas inefficiencies.

Auditing a Solidity repository with Atlas's parallel subagents means you can thoroughly examine your smart contracts without overwhelming your primary Atlas session. The `task` tool launches subagents in their own isolated sessions, ensuring that their extensive file dumps and intermediate thoughts never consume your main context window. Only their concise conclusions and identified issues are returned. For Solidity projects, this is crucial given the complexity of contract logic and the need to analyze every line for potential attack vectors or gas inefficiencies. Atlas indexes your Solidity code by AST declarations using tree-sitter, providing a deeper understanding than blind line windows. This allows subagents to intelligently search code with hybrid semantic and keyword retrieval, fused by reciprocal rank fusion, specifically targeting Solidity constructs like modifiers, storage layouts, and installed libraries from `forge soldeer`.

Splitting Solidity audit tasks for concurrent subagents

To maximize efficiency, Solidity audits with Atlas should be split into independent slices, allowing multiple subagents to run concurrently. For instance, a large Foundry project might divide its `src/` directory into 3 distinct subdirectories, each assigned to a dedicated subagent for a focused, read-only review of its Solidity contracts.

Effectively auditing a Solidity codebase with parallel subagents requires dividing the work into manageable, non-overlapping slices. You can split the audit by directory, by package, or by specific rule sets. For a typical Foundry project, this might involve assigning different subdirectories within `src/` to individual subagents. For example, one subagent could focus on `src/tokens/`, another on `src/governance/`, and a third on `src/utils/`. You launch these tasks concurrently using the `task` tool, ensuring they run in parallel rather than sequentially. For a read-only sweep, which is highly recommended for initial Solidity audits due to the high stakes of smart contract security, you specify `subagent_type explore`. The `explore` subagent is deny-by-default and read-only, making it the perfect choice for identifying problems without risking unintended modifications to your critical Solidity files or `foundry.toml` configuration.

Reviewing Solidity findings and applying fixes with Atlas

After parallel subagents complete their sweeps, Atlas collects each subagent's final message, including any error text, to present a unified view of findings. This allows a Solidity developer in 2026 to quickly merge identified issues into a `todowrite` list, ensuring a comprehensive audit report and streamlined remediation process.

Once all parallel subagents have finished their Solidity audit tasks, Atlas automatically collects their final messages. If a subagent encounters an issue or fails, Atlas surfaces the child's error text verbatim, providing immediate insight into the problem. You then merge these individual findings into a single `todowrite` list within your main Atlas session. This consolidated list becomes your actionable plan for remediation. Using the `edit` tool, you can then address each identified issue directly. For Solidity-specific problems, Atlas can assist with concrete fixes, such as adding a `reentrancy` guard to a vulnerable function or converting a `require` string to a custom error to reduce deploy size and gas costs. Before committing any changes, Atlas computes a unified diff for every file edit and surfaces it for your approval. You can even have Atlas run `forge snapshot` to see the gas delta of your proposed Solidity changes, providing a clear understanding of their economic impact before final approval.

Ensuring safety and control during Solidity audits

Atlas prioritizes safety during Solidity audits by using permission-gated tool calls and a read-only `explore` subagent type. Every Atlas tool call is permission-gated against allow, ask, and deny rules before it runs, providing a critical layer of security for sensitive smart contract code in 2026, where every diff has a gas cost and an attack surface.

The integrity and security of Solidity smart contracts are paramount, and Atlas is built with this in mind. When performing an audit, the `explore` subagent type is your safest bet, as it operates in a deny-by-default, read-only mode, preventing any accidental modifications to your `src/` directory or `foundry.toml`. Beyond subagent types, Atlas implements robust permission gating for every tool call, requiring explicit approval against allow, ask, and deny rules before execution. This means that even if a subagent suggests running `forge test` or `forge fmt`, you retain full control. Atlas further enhances safety by drafting a plan in a read-only plan agent and asking for your approval before switching to a build agent to execute any commands. All file changes are presented as unified diffs, and Atlas can even snapshot file changes as git patches, allowing edits to be diffed and rolled back, providing an unparalleled level of control and auditability for your Solidity development workflow.

Step by step

01Initialize Atlas in your Foundry project, ensuring `foundry.toml` and a `src/` directory are present for your Solidity contracts.
02Define independent audit slices for your Solidity codebase, perhaps by `src/` subdirectories or contract types, to prevent subagent overlap.
03Launch parallel `explore` subagents using the `task` tool, issuing calls concurrently for each slice to perform read-only sweeps of your Solidity files.
04Collect the final messages from each subagent; Atlas will surface any child error text verbatim if a Solidity audit task fails.
05Merge all identified Solidity issues into a single `todowrite` list within your main Atlas session.
06Use the `edit` tool to apply fixes, such as adding a reentrancy guard to a Solidity contract or converting a `require` string to a custom error to cut deploy size.
07Before approving changes, have Atlas run `forge snapshot` to review the gas delta for your Solidity contract edits.
08Approve the changes, then instruct Atlas to run `forge fmt` to ensure your Solidity code adheres to formatting standards.

Frequently asked questions

How does Atlas prevent context window issues when auditing a large Solidity repo?: Atlas launches parallel subagents in their own sessions, ensuring their file dumps never enter your main context window. Only their conclusions return, allowing comprehensive sweeps of large Solidity codebases without overload.
Can Atlas modify my Solidity contracts during an audit?: For audits, Atlas recommends the `explore` subagent type, which is deny-by-default and read-only. This ensures no changes are made to your Solidity contracts without explicit approval in the main session.
What Solidity tools does Atlas integrate with for auditing?: Atlas integrates deeply with the Foundry toolchain. It can read your contracts, storage layout, and libraries installed by `forge soldeer`, and can run `forge test`, `forge snapshot`, and `forge fmt` behind permission prompts.
How do I review the impact of Atlas's suggested Solidity fixes?: Atlas computes a unified diff for every file edit and surfaces it for approval. For Solidity, you can have Atlas run `forge snapshot` to see the gas delta before approving, ensuring you understand the cost implications.
How does Atlas ensure security when running commands in my Solidity project?: Every Atlas tool call is permission-gated against allow, ask, and deny rules before it runs. Atlas also drafts a plan in a read-only plan agent and asks for approval before switching to a build agent to execute commands in your Solidity environment.
Can Atlas help me write fuzz tests for my Solidity contracts?: Yes, Atlas can write a fuzz test in your `test/` directory and run `forge test` behind a permission prompt, helping you improve the test coverage and security of your Solidity smart contracts.
Does Atlas support local embeddings for Solidity code indexing?: Yes, Atlas can build its code index with local Ollama embeddings, keeping your sensitive Solidity code off third-party servers and ensuring privacy during the audit process.

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