code-maturity-assessor
by trailofbitscode-maturity-assessor provides an evidence-based maturity review using Trail of Bits’ 9-category framework. It assesses arithmetic safety, auditing, access control, complexity, decentralization, documentation, MEV risk, low-level code, and testing, with actionable recommendations for security audit readiness.
This skill scores 78/100, which means it is a solid listing candidate for directory users who want a structured code-maturity assessment workflow rather than a generic review prompt. The repository gives enough operational detail to understand when to use it, what it analyzes, and what output to expect, though it still leaves some adoption questions around exact triggering and runtime integration.
- Strong triggerability: the SKILL.md clearly frames a 9-category Trail of Bits code-maturity assessment with a defined purpose and phase-based workflow.
- Good operational clarity: the repository spells out discovery, analysis, and report phases, plus supporting criteria and report format resources.
- Useful install decision value: users can see the intended deliverable—a scorecard with evidence-based ratings, file references, and improvement roadmap—before installing.
- No install command or execution glue: the repo does not show how the skill is invoked in practice, so agents may need some trial-and-error to trigger it correctly.
- Some workflow content is truncated in the excerpt, and there are no scripts or reference files to validate automation or external dependencies.
Overview of code-maturity-assessor skill
What code-maturity-assessor does
The code-maturity-assessor skill performs a structured maturity review of a codebase using Trail of Bits’ 9-category framework. It is designed for teams that need an evidence-based scorecard, not a vague code review. If you are deciding whether a project is ready for a security audit, a release gate, or a remediation plan, this skill gives you a repeatable way to assess gaps.
Who should use it
Use the code-maturity-assessor skill if you work on smart contracts or adjacent code where correctness, test depth, access control, and operational readiness matter. It is especially useful for maintainers, security reviewers, and teams preparing a codebase for external review. It is less useful if you want a quick stylistic lint, a generic architecture review, or a broad threat model without code-level evidence.
What makes it decision-useful
The main value is that it separates “looks okay” from “supported by evidence.” The assessment looks for concrete signals such as arithmetic handling, event coverage, decentralization choices, documentation quality, complexity hotspots, and testing practice. That makes it a strong fit when you need to justify priorities to engineers, auditors, or stakeholders.
How to Use code-maturity-assessor skill
Install and scope the skill
Install with npx skills add trailofbits/skills --skill code-maturity-assessor. Then read SKILL.md first, followed by resources/ASSESSMENT_CRITERIA.md, resources/REPORT_FORMAT.md, and resources/EXAMPLE_REPORT.md. Those three files show how the rating rubric works, what the final report should contain, and how detailed the output should be.
Give it a real assessment target
The code-maturity-assessor usage works best when you specify a concrete repository, module, or release candidate. Good inputs name the codebase, platform, and goal: for example, “Assess the maturity of this Solidity protocol before security audit” or “Evaluate the maturity of the access-control and testing layers in contracts/.” If you only ask for “review this project,” the skill has to guess what to inspect first.
Use a prompt that matches the framework
A strong code-maturity-assessor guide prompt should include the scope, urgency, and any known risk areas. For example: “Run a code maturity assessment for a DeFi protocol, focus on arithmetic safety, auditing events, access control, and tests, and flag anything that would block a Security Audit.” That phrasing helps the skill map your objective to the 9 categories instead of producing a generic summary.
Read the report files before relying on output
The most useful repository files are resources/ASSESSMENT_CRITERIA.md, resources/REPORT_FORMAT.md, and resources/EXAMPLE_REPORT.md. Together they show the threshold logic, the expected structure of the scorecard, and the level of evidence each rating needs. For install decisions, this matters because it tells you whether the output will be actionable or just descriptive.
code-maturity-assessor skill FAQ
Is this only for smart contracts?
It is strongest for Solidity and related building-secure-contracts workflows, but the framework can still help on codebases where security, testing, and operational controls are central. If your project is a typical web app with no on-chain logic, the code-maturity-assessor skill may be overkill compared with a conventional code review prompt.
How is this different from a normal prompt?
A normal prompt usually produces an ad hoc review. code-maturity-assessor install gives you a defined rubric, a fixed report shape, and a clear evidence standard. That makes the result easier to compare across repositories or across time.
Is it suitable for a Security Audit precheck?
Yes, code-maturity-assessor for Security Audit is one of its best use cases. It helps identify whether the codebase has enough documentation, test depth, and design clarity to justify moving into a formal audit. It does not replace an audit, but it can prevent wasting audit time on obvious maturity gaps.
What should I do if the repo is sparse?
If the repository has limited documentation, thin tests, or unclear structure, expect the skill to ask follow-up questions or mark categories conservatively. In that case, provide extra context about deployment assumptions, off-chain monitoring, governance, and any specs that live outside the repo.
How to Improve code-maturity-assessor skill
Give it evidence-rich inputs
The best way to improve results is to supply the exact files that describe intent: specs, architecture notes, testing strategy, and any security process docs. For code-heavy repos, point it to the main contracts or modules and the test directories. Strong inputs reduce guesswork in categories like arithmetic, complexity, and access control.
Clarify what “maturity” should mean for this repo
A token contract, a DAO, and a DeFi protocol do not fail for the same reasons. Tell the skill what you care about most: release readiness, audit readiness, upgrade safety, or operational monitoring. That lets it weight the 9 categories in a way that matches your risk profile instead of treating every category as equally important.
Watch for the common failure modes
The most common misses are missing specs, undocumented unchecked operations, weak event strategy, and tests that do not cover edge cases. If the first pass is too optimistic, ask for a second pass focused on the weakest category and require file:line evidence. If it is too cautious, provide the missing docs or explain process decisions that are not visible in code.
Iterate after the first report
Use the first assessment as a gap map, then resubmit with the files or context that address the highest-risk findings. This is where the code-maturity-assessor skill becomes more valuable than a one-shot prompt: you can re-run it after adding tests, tightening docs, or clarifying governance, and compare whether the maturity score actually improved.