HOL Guard vs Semgrep vs Arcjet
Side by side, from each listing’s own data. A row where every column says the same is shown once, dimmed.
 HOL Guardby Hashgraph OnlineRemove HOL Guard from this comparison |  Semgrepby SemgrepRemove Semgrep from this comparison |  Arcjetby ArcjetRemove Arcjet from this comparison | |
|---|---|---|---|
| Sets it apart |
| — |
|
| What it is | Blocks risky AI coding agent actions at runtime on your machine — shell commands, secret access, MCP servers, plugins and package installs — against local policy. Apache-2.0 CLI, free on one machine. | Scans source code with AI-assisted SAST, SCA, and secrets detection, finding 8x more true positives with 50% less noise than standalone foundation models. | Secures AI agents and apps at runtime: detects prompt injection, enforces tool-call policies, redacts sensitive data, and blocks bots, through SDKs, an MCP server, and a CLI. |
| Provider | Hashgraph Online | Semgrep | Arcjet |
| Official vendor | Not an official listingSame for all | ||
| Verified | YesSame for all | ||
| Access | CLI | API, CLI | API, MCP, CLI |
| Auth | None | API Key | API Key |
| MCP server | No MCP server | No MCP server | In its setup guide |
| CLI install | In its docsSame for all | ||
| API base URL | No API | In its docs | In its docs |
| Skills | Policy Lint, Install Doctor, Policy Verify, Secret Scan, Policy Eval | None listed | Prompt Injection Detection, Guard Policies, Sensitive Info Detection, Bot Protection, Request Investigation |
| Streaming | NoSame for all | ||
| Push notifications | NoSame for all | ||
| Categories | Security, Code & DevTools | Security | Security, Infrastructure & Ops |
| Tags | runtime-guardrails, policy-enforcement, mcp-security, secret-scanning, supply-chain, coding-assistants, open-source | sast, security, open-source, code-review, supply-chain | prompt-injection, agent-guardrails, policy-enforcement, bot-protection, rate-limiting, pii-redaction, rego |
| Listed since | Oct 24, 2026 | May 22, 2026 | Oct 31, 2026 |
| Use it now | |||
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