HEAD TO HEAD
Lasso Security matched with Prompt Security (SentinelOne): agentic endpoint security compared
SHORT ANSWER
On our published weights Lasso Security scores higher overall, 6.40 to 5.45 out of 10. Lasso scores higher on stop before it runs, verdict range and capability rules; Prompt Security scores higher on no criterion; they tie on actor trail, rollout path, cloud and workspace reach, named agent coverage and public proof. 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
Prompt Security (SentinelOne)
SentinelOne (deal announced 5 August 2025; completion reported in September 2025)
SentinelOne Singularity estates
Rank 8 of 8 among broader AI security platforms
Which scores higher on each criterion?
| Criterion | Weight | Lasso Security | Prompt Security (SentinelOne) | 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 | 6 / 10 Governs what agents and MCP servers can do; per-tool-call enforcement is not detailed. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Lasso |
| 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 | 3 / 10 Documents 2 of six verdict types: Block or deny and Mask or modify. "Prevents prompt injection and data leakage; its browser extension inspects and redacts prompts." Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 2026 | Lasso |
| 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 | 5 / 10 Maps agents and MCP servers and finds shadow MCP servers; capability rules are not itemized. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Lasso |
| 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 | 5 / 10 Agent versus person attribution is not described on the pages we read. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Tie |
| 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 Two resident sensors, a browser extension and a dedicated AI endpoint agent, inside the SentinelOne Singularity Platform. Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 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 | 6 / 10 Covers homegrown AI apps from testing to runtime as well as employee and developer AI use. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Tie |
| 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 | 5 / 10 Names 3 of the six agents we track: Claude Code, Cursor and GitHub Copilot. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Tie |
| 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 | 8 / 10 Backed by SentinelOne, which announced the acquisition on 5 August 2025; pricing not published. Source: SentinelOne press release: agreement to acquire Prompt Security (5 August 2025) · Read 27 Sep 2026 | Tie |
Which verdicts does each document?
| Verdict type | Lasso Security | Prompt Security (SentinelOne) |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Not described | Not described |
| Alert or warn | Documented | Not described |
| 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
- Prompt Security (SentinelOne): "Prevents prompt injection and data leakage; its browser extension inspects and redacts prompts."
Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026
Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 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
Prompt Security (SentinelOne)
Two local sensors, a browser extension and a dedicated AI endpoint agent, built into the SentinelOne Singularity Platform.
Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 2026
Which agents does each name?
| Agent | Lasso Security | Prompt Security (SentinelOne) |
|---|---|---|
| Claude Code | Named | Named |
| Cursor | Named | Named |
| GitHub Copilot | Not named | Named |
| OpenAI Codex | Not named | Not named |
| Windsurf | Named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 3 of 6 | 3 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 Prompt Security (SentinelOne) if you need public proof and stop before it runs. Prompt Security (SentinelOne) is best for: SentinelOne Singularity estates.
Frequently asked questions
Which is better for agentic endpoint security, Lasso Security or Prompt Security (SentinelOne)?
On our published weights Lasso Security scores higher overall, 6.40 to 5.45 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 Prompt Security (SentinelOne)?
Lasso Security scores higher on stopping an action before it runs (8 to 6). 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. Prompt Security (SentinelOne): Governs what agents and MCP servers can do; per-tool-call enforcement is not detailed.
Do Lasso Security and Prompt Security (SentinelOne) 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. Prompt Security (SentinelOne): not published. SentinelOne publishes no pricing for Prompt Security.