# SlopCop > SlopCop is a hosted code check for coding agents. It checks each change an agent makes for bugs and security risks, and reports every new finding with its rule, severity, file and line, so the agent can fix it and check again. The findings come from static-analysis rules run by Bifrost, an open-source engine. - It runs from the `slopcop` CLI, inside coding agents such as Claude Code and Codex, over MCP, and on GitHub pull requests. - It covers 13 languages: C, C++, C#, Go, Java, JavaScript, Kotlin, PHP, Python, Ruby, Rust, Scala and TypeScript. Coverage differs by language. - A workspace gets 1,000 free checks each calendar month. Each check after those costs $0.001, paid from prepaid credits. Repositories are free. - A check reads the repositories you choose and never builds or runs their code. ## Product - [SlopCop](https://slopcop.com/): SlopCop checks every change your coding agent makes for bugs and security risks, in 13 languages, and hands it the evidence to fix them on the spot. - [What it catches](https://slopcop.com/code-quality-checks): A SlopCop check reports the bugs and security risks your coding agent’s change introduced, each with its rule, severity, file and line, in 13 languages. - [Pull request checks](https://slopcop.com/pull-request-checks): SlopCop checks each push to a GitHub pull request and puts every new finding on its line. You can require it to merge. 1,000 checks a month are free. - [Custom rules](https://slopcop.com/custom-static-analysis): SlopCop writes custom static analysis rules from the fixes your team keeps making, tests each on code it should and shouldn’t flag, and sets them up in your CI. - [Pricing](https://slopcop.com/pricing): A SlopCop workspace gets 1,000 free checks each calendar month, then pays $0.001 a check from prepaid credits. Repositories are free, with no per-seat price. ## Documentation - [Documentation index](https://docs.slopcop.com/llms.txt): Every documentation page, with a link to its Markdown version. - [Quickstart](https://docs.slopcop.com/get-started/quickstart/): Install the slopcop CLI, add its skill to your coding agent, sign in, and run a first check. - [SlopCop in your coding agent](https://docs.slopcop.com/agents/overview/): How a coding agent checks its own change with SlopCop, reads what it found, and fixes it before handing the work back. - [What a check finds](https://docs.slopcop.com/get-started/what-a-check-finds/): The kinds of findings a SlopCop check reports, how severity and certainty differ, which languages are covered, and what a check leaves out. - [Read a report](https://docs.slopcop.com/checks/read-a-report/): What a SlopCop report claims and what it does not: status, certainty, new versus existing findings, and incomplete checks. - [Check pull requests](https://docs.slopcop.com/checks/pull-requests/): Turn on pull request checks for a GitHub repository and every push gets a SlopCop check run, with each new finding annotated on its line. - [Gate a change in CI](https://docs.slopcop.com/checks/ci/): Run slopcop in GitHub Actions or any CI with a stored token, act on the exit code, and upload SARIF to code scanning. - [Repository rules](https://docs.slopcop.com/checks/repository-rules/): Add your own Bifrost policies under .slopcop/policies and every check evaluates them alongside the hosted catalog. - [Credits and what it costs](https://docs.slopcop.com/account/credits/): Free checks each month, the price of a check after those, buying credits, and what happens when credits run out. - [What leaves your machine](https://docs.slopcop.com/account/privacy/): Exactly what a slopcop check sends, what the service does with it, what it never does, and what an agent session adds. ## Comparisons - [SlopCop compared](https://slopcop.com/compare): How SlopCop compares with Semgrep, CodeQL, CodeRabbit, SonarQube and your agent’s own review as of November 2026, with our benchmark numbers where they exist. - [SlopCop vs Semgrep](https://slopcop.com/compare/semgrep): SlopCop vs Semgrep as of November 2026: what each one is, our benchmark of Bifrost and Semgrep Community Edition, and when Semgrep is the better pick. - [SlopCop vs CodeQL](https://slopcop.com/compare/codeql): SlopCop vs CodeQL as of November 2026: what each one is, our benchmark of Bifrost and CodeQL in eleven languages, and when CodeQL is the better pick. ## Benchmarks and research - [AI Coding Model Power Ranking](https://slopcop.com/power-ranking): AI coding models ranked on intelligence, speed and value, from judged head-to-head results on real coding tasks. - [DataFlowBench](https://dataflowbench.slopcop.com/): Our benchmark of how well static analyzers follow data from a source to a sink, with its method and limits. - [UsageBench](https://usagebench.slopcop.com/): Our benchmark of Bifrost against language servers. - [Bifrost](https://github.com/BrokkAi/bifrost): The open-source static analysis engine a SlopCop check runs. - [Blog](https://blog.slopcop.com/llms.txt): The blog’s own index: posts on coding agents, static analysis and benchmarks. ## Optional - [Changelog](https://slopcop.com/changelog): What’s new in SlopCop: the changes to checks, the slopcop CLI and the web app, newest first. - [Changelog as JSON](https://slopcop.com/changelog.json): The released changelog as JSON, newest first, with paging and a since filter. - [Privacy Policy](https://slopcop.com/privacy): How SlopCop collects, uses, retains and shares information, including source code, billing details and browser storage. - [Terms of Service](https://slopcop.com/terms): The terms for using SlopCop and buying credits. - [Refund & Cancellation Policy](https://slopcop.com/refunds): SlopCop's refund and cancellation policy for credits, automatic top-ups and subscriptions.