Semgrep
vigolium/piolium
Run Semgrep static analysis scan on a codebase using parallel subagents.
Build a target project into an opentaint project model. An agent skill from seqra/opentaint.
$ npx skills add seqra/opentaint --skill build-project -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install seqra/opentaint build-project --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/seqra/opentaint.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/build-project .claude/skills/build-project && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "build-project" agent skill from https://github.com/seqra/opentaint/tree/main/skills/build-project into .claude/skills/build-project/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "build-project", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/seqra/opentaint/tree/main/skills/build-projectType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add seqra/opentaint --skill build-project -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install seqra/opentaint build-project --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/seqra/opentaint.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/build-project .agents/skills/build-project && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "build-project" agent skill from https://github.com/seqra/opentaint/tree/main/skills/build-project into .agents/skills/build-project/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "build-project", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add seqra/opentaint --skill build-project -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install seqra/opentaint build-project --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/seqra/opentaint.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/build-project .cursor/skills/build-project && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "build-project" agent skill from https://github.com/seqra/opentaint/tree/main/skills/build-project into .cursor/skills/build-project/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "build-project", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/seqra/opentaint.git --path skills/build-project--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add seqra/opentaint --skill build-project -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install seqra/opentaint build-project --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/seqra/opentaint.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/build-project .gemini/skills/build-project && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "build-project" agent skill from https://github.com/seqra/opentaint/tree/main/skills/build-project into .gemini/skills/build-project/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "build-project", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install seqra/opentaint build-projectInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add seqra/opentaint --skill build-project -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/seqra/opentaint.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/build-project .github/skills/build-project && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "build-project" agent skill from https://github.com/seqra/opentaint/tree/main/skills/build-project into .github/skills/build-project/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "build-project", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add seqra/opentaint --skill build-project -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install seqra/opentaint build-project --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/seqra/opentaint.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/build-project .opencode/skills/build-project && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "build-project" agent skill from https://github.com/seqra/opentaint/tree/main/skills/build-project into .opencode/skills/build-project/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "build-project", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
build-projectBuild a target project into an opentaint project model. An agent skill from seqra/opentaint.
Build Project is an agent skill from seqra/opentaint. Build a target project into an opentaint project model. Use whenever a fresh opentaint project model needed
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/java.md`).
It sits in Security, covering Static analysis and SAST. The repository describes itself as: The open source taint analysis engine for the AI era. A formal dataflow analysis tool you can customize and self-host, built so AI agents drive your application security analysis… The licence is Apache-2.0.
7 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit f945f92. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Build Project loads about 1.1k tokens when it runs, and up to ~1.7k if it reads all its reference files. Until then it costs about 30 tokens; SKILL.md has 626 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from seqra/opentaint at commit f945f92, republished under its Apache-2.0 licence (© seqra). 626 words, ~1,128 tokens.
.claude/skills/build-project/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.Turn a target project into an opentaint project model: run the project's build, resolve its dependencies if needed. The build tool, toolchain, and scope flags are language-specific — detect the target language from the project's build files, then read the matching references/<language>.md and follow its numbered steps, which key to the ones below.
Provided by the caller, fall back to the default value when omitted. Ask back only when a required input is missing and has no sensible default
project-root (optional) — root of the target project. Opentaint keeps all analysis artifacts under the fixed <project-root>/.opentaint/ directory, so every .opentaint/... path below resolves there. Default: current directorybuild-hints (optional) — anything known about how this project builds: required toolchain version, modules/profiles to enable, project-specific build approach and so onDelete any existing .opentaint/project first, so files from an old model can't bleed into the new one
Determine how the project builds — its build tool, or whether it ships pre-compiled artifacts
Re-enable every module the project disables so their code lands in the model, then build with them included. Enabling a disabled module is a config edit, not a source change, so the model still represents the current commit. If a specific module cannot be made to compile after reasonable effort, exclude only that one. Report which modules were enabled and which (if any) were excluded.
opentaint compile <project-root> -o .opentaint/projectopentaint compile runs the project's real build, so it resolves the full dependency graph and the actual module reactor automatically — no hand-listing of dependencies or scope. Set the build toolchain the project needs first. Use this path almost always.
Feedback loop: a failure here is almost always a fixable build problem, not grounds to leave this path — and the autobuilder's wrapper message is terse, so don't judge fixability from it. Reproduce the project's own build directly to surface the real error, fix it, then re-run opentaint compile.
opentaint project — last resortOnly when the project's own build cannot be made to pass at all, build the artifacts by hand, then create the model from them with opentaint project, restricting analysis to project code. It's required to show the analyzer which code belongs to the project and which to third-party packages. Take the scope roots from what the code actually declares, not the build config or the folder layout. Verify final list of methods carefully, it's very important to list ALL third-party packages.
.opentaint/project/project.yaml exists, non-empty, and its module/scope entries cover every root the project's own code declares. For a multi-module project, confirm the expected module count is present. Make sure, that dependencies at .opentaint/project/dependencies resolved and downloaded correctly.
When the build won't converge after ~3 fixes → report non-convergence and leave the build stage pending, for the orchestrator to intervene.
Short and concise report of what was done
.opentaint/project/ — the opentaint project modelopentaint project was used.opentaint/project, don't produce any other files. This skill does not write any tracking state, only return info per Outputopentaint, never hand-edit project.yaml or anything under the model dir. To change what's analyzed, fix the command and rebuild© seqra, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 1 other file (references) in skills/build-project of seqra/opentaint.
Open the folder on GitHubat commit f945f92
Build Project next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Build Project this skillseqra/opentaint | 162 | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Semgrepvigolium/piolium | 138 | 1 repos | ~2.4k | Automated safety check: Notes | MIT | |
| C To AstNarwhal-Lab/MagicSkills | 316 | — | ~1.1k | Automated safety check: Pass | MIT | |
| Semgrep Security Scantrailofbits/skills | 7.4k | — | ~3.7k | Automated safety check: Notes | CC-BY-SA-4.0 | |
| LLM Sast ScannerSunWeb3Sec/llm-sast-scanner | 286 | — | ~6.2k | Automated safety check: Pass | None | |
| Sast SemgrepAgentSecOps/SecOpsAgentKit | 219 | 2 repos | ~2.4k | Automated safety check: Pass | Custom licence |
vigolium/piolium
Run Semgrep static analysis scan on a codebase using parallel subagents.
Narwhal-Lab/MagicSkills
Parse C source code into an Abstract Syntax Tree (AST). An agent skill from Narwhal-Lab/MagicSkills.
trailofbits/skills
Detects languages, proposes rulesets for approval, then runs the approved Semgrep scan across a codebase and merges the output into one SARIF file.
SunWeb3Sec/llm-sast-scanner
General-purpose Static Application Security Testing (SAST) skill for code vulnerability analysis.
AgentSecOps/SecOpsAgentKit
Static application security testing (SAST) using Semgrep for vulnerability detection, security code review, and secure coding guidance with OWASP and CWE framework mapping.
Automattic/agent-skills
A skill your agent uses when configuring, running, or fixing PHPStan static analysis in WordPress projects (plugins/themes/sites): phpstan.neon setup, baselines, WordPress-specific typing, and…
seqra/opentaint
Analyze an OpenTaint scan's dropped external methods and decide which of them are propagators and optionally sinks.
seqra/opentaint
Model a method's taint propagation as code-based dataflow approximation and refine it against a test project until the sample passes.
seqra/opentaint
Run one stage of the OpenTaint pipeline by coordinating leaf subagents and deterministic joins.
seqra/opentaint
Run an end-to-end OpenTaint application-security analysis while owning the long project build and scans and delegating each other pipeline stage.
seqra/opentaint
Model a method's taint propagation as a passThrough approximation.
seqra/opentaint
Author and verify an OpenTaint rule. An agent skill from seqra/opentaint.
Categories
Build a target project into an opentaint project model. An agent skill from seqra/opentaint. Build Project is an agent skill from seqra/opentaint. Build a target project into an opentaint project model.
Build Project fits situations like: A fresh opentaint project model needed; tasks that involve Static analysis and SAST.
Run `npx skills add seqra/opentaint --skill build-project -a claude-code`. Or copy the skill folder (skills/build-project in seqra/opentaint) into .claude/skills/build-project in your project. Claude Code loads it when a task matches its description.
Run `npx skills add seqra/opentaint --skill build-project -a codex`. Or copy the skill folder (skills/build-project in seqra/opentaint) into .agents/skills/build-project in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add seqra/opentaint --skill build-project -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/build-project, .gemini/skills/build-project, .github/skills/build-project and .opencode/skills/build-project in your project.
SKILL.md names no scripts, command-line tools or credentials: Build Project is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Build Project is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.1k tokens (SKILL.md is roughly 4.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 609 tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Build Project: Semgrep (vigolium/piolium, 138 stars), C To Ast (Narwhal-Lab/MagicSkills, 316 stars), Semgrep Security Scan (trailofbits/skills, 7.4k stars) and LLM Sast Scanner (SunWeb3Sec/llm-sast-scanner, 286 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
seqra (a GitHub organization) maintains it in seqra/opentaint, which has 162 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 7, 2026.
Source: seqra/opentaint on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.