HEAD TO HEAD
Lasso Security matched with Onyx Security: agentic endpoint security compared
SHORT ANSWER
On our published weights Onyx Security scores higher overall, 6.85 to 6.40 out of 10. Lasso scores higher on named agent coverage and public proof; Onyx scores higher on verdict range, actor trail and cloud and workspace reach; they tie on stop before it runs, capability rules and rollout path. Which fits depends on which of those criteria matters most to you.
By The Agent Desk · Agentic Endpoint Compare · Published 2026-10-11
Desk research from public vendor pages, press releases and standards pages read on 27 September and 11 October 2026. Editorial assessment; we did not run the products.
How do they compare at a glance?
Lasso Security
Claude Code hooks and an open-source MCP gateway
Rank 5 of 8 among broader AI security platforms
Onyx Security
Inline control with the widest set of verdicts
Rank 2 of 8 among broader AI security platforms
Which scores higher on each criterion?
| Criterion | Weight | Lasso Security | Onyx Security | Higher |
|---|---|---|---|---|
| Stop before it runs | 25% | 8 / 10 Inspects every Claude Code tool call before it is executed through the agent's lifecycle hooks, and gates MCP traffic through its gateway. Source: Lasso Security: AI coding assistants · Read 27 Sep 2026 | 8 / 10 Inspects every prompt, tool call and model response inline before acting on it. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Tie |
| Verdict range | 15% | 5 / 10 Documents 3 of six verdict types: Block or deny, Alert or warn and Mask or modify. "MCP actions block, alert or sanitize; masks sensitive data before prompts reach third-party models." Source: Lasso Security: MCP security · Read 27 Sep 2026 Source: Lasso Security: AI usage control · Read 27 Sep 2026 | 7 / 10 Documents 4 of six verdict types: Block or deny, Ask a person, Alert or warn and Mask or modify. "Five actions: alert, block, mask, steer, or ask." Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Onyx |
| Capability rules | 15% | 6 / 10 Controls which users and teams can connect to which MCP servers, with role-based permissions and DLP; broader capability rules are not itemized. Source: Lasso Security: MCP security · Read 27 Sep 2026 | 6 / 10 Agent posture covers misconfigurations, excessive permissions and credential handling; rules by capability type (shell, packages, cloud CLIs) are not itemized. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Tie |
| Actor trail | 10% | 5 / 10 Keeps a history of inputs, policy decisions and enforcement actions; agent versus person attribution is not described. Source: Lasso Security: AI usage control · Read 27 Sep 2026 | 7 / 10 Agent identity and access governance is a named solution; per-action attribution detail is lighter than the leader. Source: Onyx Security homepage · Read 27 Sep 2026 | Onyx |
| Rollout path | 10% | 6 / 10 Browser extension, proxy, gateway and Claude Code hooks: several components to run. Source: Lasso Security: AI usage control · Read 27 Sep 2026 | 6 / 10 Endpoint agents, browser extensions, APIs and gateways; the device component is resident software. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Tie |
| Cloud and workspace reach | 10% | 6 / 10 Runtime enforcement at the proxy, API or AI gateway layer reaches AI apps beyond the laptop; agents in cloud workspaces are not described. Source: Lasso Security homepage · Read 27 Sep 2026 | 9 / 10 Covers cloud workloads alongside browser AI, coding assistants, desktop agents and MCP servers, across SaaS, cloud, endpoint and code. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Onyx |
| Named agent coverage | 5% | 5 / 10 Names 3 of the six agents we track: Claude Code, Cursor and Windsurf. Source: Lasso Security: AI coding assistants · Read 27 Sep 2026 Source: Lasso Security: MCP security · Read 27 Sep 2026 | 0 / 10 Names 0 of the six agents we track: none. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Lasso |
| Public proof | 10% | 8 / 10 Lists Lasso for Employees at $20,000 per 12 months on AWS Marketplace (marketplace list price), and its newsroom describes a $30 million round led by ClearSky in September 2026. Source: AWS Marketplace: Lasso for Employees · Read 11 Oct 2026 | 7 / 10 Series B of $113M announced 29 July 2026; SOC 2 Type II and ISO 27001 listed; pricing not published. Source: Onyx Security blog: $113M Series B (29 July 2026) · Read 27 Sep 2026 | Lasso |
Which verdicts does each document?
| Verdict type | Lasso Security | Onyx Security |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Not described | Documented |
| Alert or warn | Documented | Documented |
| Mask or modify | Documented | Documented |
| Simulate first | Not described | Not described |
| Remove or scale back | Not described | Not described |
- Lasso Security: "MCP actions block, alert or sanitize; masks sensitive data before prompts reach third-party models."
Source: Lasso Security: MCP security · Read 27 Sep 2026
Source: Lasso Security: AI usage control · Read 27 Sep 2026
- Onyx Security: "Five actions: alert, block, mask, steer, or ask."
Source: Onyx Security: AI security platform · Read 27 Sep 2026
How does each reach devices?
Lasso Security
Browser extension, proxy integrations, the MCP gateway and Claude Code hooks through the enterprise management platform; works with stacks such as Palo Alto Networks or CrowdStrike.
Source: Lasso Security: AI usage control · Read 27 Sep 2026
Onyx Security
Endpoint agents, browser extensions, APIs and gateways; Onyx says no SDK changes are needed.
Source: Onyx Security: AI security platform · Read 27 Sep 2026
Which agents does each name?
| Agent | Lasso Security | Onyx Security |
|---|---|---|
| Claude Code | Named | Not named |
| Cursor | Named | Not named |
| GitHub Copilot | Not named | Not named |
| OpenAI Codex | Not named | Not named |
| Windsurf | Named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 3 of 6 | 0 of 6 |
Which should you choose?
Choose Lasso Security if you need stop before it runs and public proof. Lasso Security is best for: Claude Code hooks and an open-source MCP gateway.
Choose Onyx Security if you need cloud and workspace reach and stop before it runs. Onyx Security is best for: Inline control with the widest set of verdicts.
Frequently asked questions
Which is better for agentic endpoint security, Lasso Security or Onyx Security?
On our published weights Onyx Security scores higher overall, 6.85 to 6.40 out of 10. See the criterion table above for where each scores higher.
Which stops an agent action before it runs more fully, Lasso Security or Onyx Security?
They tie at 8. Lasso Security: Inspects every Claude Code tool call before it is executed through the agent's lifecycle hooks, and gates MCP traffic through its gateway. Onyx Security: Inspects every prompt, tool call and model response inline before acting on it.
Do Lasso Security and Onyx Security publish prices?
Lasso Security: AWS Marketplace list price: $20,000 per 12 months (Lasso for Employees, GenAI Chatbots annual commit). Marketplace list price for one listing. Other listings, such as Lasso for Secured Gateway for LLMs, were not priced on the pages we read; lasso.security publishes no pricing. Onyx Security: not published. Onyx Security publishes no pricing.