sysplant
SysPlant is a code-generation tool that produces syscall invocation/stub code for Windows from multiple “iterator” methods (e.g., Hell’s Gate, Halos’ Gate, SysWhispers variants, Canterlot’s Gate). It can generate code in several languages (Python module/CLI producing Nim/C/C++/Rust outputs) and also includes a built-in MCP server to let AI coding assistants generate syscall code via chat.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Security posture is difficult to assess from the provided README/manifest. No authentication/authz is described for the MCP/CLI, which can be risky when exposed beyond localhost. The project is explicitly intended for syscall retrieval/invocation techniques associated with offensive tradecraft; use should be restricted to authorized, permitted environments. TLS enforcement is unclear (SSE/HTTP transport mentioned without explicit TLS details). Secret handling cannot be validated from the provided excerpts.
⚡ Reliability
Best When
You need offline code generation for educational or authorized pentesting/research workflows, and you want an agent-friendly interface (MCP) to produce syscall-related templates.
Avoid When
You cannot guarantee the target environment and use are authorized; or you need a general-purpose, security-hardening-focused API (this tool is explicitly about syscall retrieval/invocation techniques).
Use Cases
- • Generate Windows syscall stubs/code using different syscall discovery/iterator techniques
- • Create direct/indirect/random/egg-hunter syscall call patterns from a CLI
- • Use an MCP server interface to generate syscall code from an AI assistant
Not For
- • Production malware/Evasion use
- • Environments without authorization to perform low-level system instrumentation or code execution
- • Systems where generating or executing such stubs is disallowed by policy/compliance
Interface
Authentication
No explicit auth mechanism is described for the CLI/MCP server in the provided materials.
Pricing
No pricing model is described (project appears to be an open-source tool).
Agent Metadata
Known Gotchas
- ⚠ Tooling generates security-sensitive low-level code; agents should avoid using it in unauthorized contexts.
- ⚠ The README indicates WIP and some platform support gaps (x86/WoW64 TODO), so generated output may be incomplete for those architectures.
- ⚠ MCP usage details exist, but specific MCP tool schemas/transport behaviors are not shown in the provided excerpts.
Alternatives
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Scores are editorial opinions as of 2026-03-30.