HEAD TO HEAD
Bloom Security matched with Onyx Security: agentic endpoint security compared
SHORT ANSWER
On our published weights Onyx Security scores higher overall, 6.85 to 4.65 out of 10. Bloom scores higher on capability rules; Onyx scores higher on stop before it runs, verdict range, actor trail, rollout path, cloud and workspace reach and public proof; they tie on named agent coverage. 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?
Bloom Security
Inventory and supply-chain rules for endpoint software
Rank 6 of 6 among agentic endpoint vendors
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 | Bloom Security | Onyx Security | Higher |
|---|---|---|---|---|
| Stop before it runs | 25% | 6 / 10 Defines what agents can access, execute and transmit; runtime decisions on individual actions are not detailed. Source: Bloom Security homepage · 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 | Onyx |
| Verdict range | 15% | 3 / 10 Documents 2 of six verdict types: Block or deny and Remove or scale back. "Blocks malicious or policy-violating packages and skills; removes risky tools, revokes permissions and scales back overpermissioned MCP servers." Source: Bloom Security homepage · 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% | 8 / 10 Rules on what agents can access, execute and transmit, automatic scaling back of overpermissioned MCP servers, and package and skill policies across npm, Chrome Web Store and Open VSX. Source: Bloom Security homepage · 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 | Bloom |
| Actor trail | 10% | 4 / 10 Not described on the pages we read. Source: Bloom Security homepage · 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% | 4 / 10 Deployment method not published. Source: Bloom Security homepage · 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 | Onyx |
| Cloud and workspace reach | 10% | 2 / 10 Endpoint fleet only; no cloud, SaaS or homegrown agent coverage described. Source: Bloom 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% | 0 / 10 Names 0 of the six agents we track: none. Source: Bloom Security homepage · 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 | Tie |
| Public proof | 10% | 5 / 10 SOC 2 listed and a $20 million seed round reported by Ctech (secondary); pricing and deployment detail not published. Source: Ctech by Calcalist (secondary): Bloom Security seed round (30 July 2026) · 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 | Onyx |
Which verdicts does each document?
| Verdict type | Bloom Security | Onyx Security |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Not described | Documented |
| Alert or warn | Not described | Documented |
| Mask or modify | Not described | Documented |
| Simulate first | Not described | Not described |
| Remove or scale back | Documented | Not described |
- Bloom Security: "Blocks malicious or policy-violating packages and skills; removes risky tools, revokes permissions and scales back overpermissioned MCP servers."
Source: Bloom Security homepage · 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?
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 | Bloom Security | Onyx Security |
|---|---|---|
| Claude Code | Not named | Not named |
| Cursor | Not named | Not named |
| GitHub Copilot | Not named | Not named |
| OpenAI Codex | Not named | Not named |
| Windsurf | Not named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 0 of 6 | 0 of 6 |
Which should you choose?
Choose Bloom Security if you need capability rules and stop before it runs. Bloom Security is best for: Inventory and supply-chain rules for endpoint software.
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, Bloom Security or Onyx Security?
On our published weights Onyx Security scores higher overall, 6.85 to 4.65 out of 10. See the criterion table above for where each scores higher.
Which stops an agent action before it runs more fully, Bloom Security or Onyx Security?
Onyx Security scores higher on stopping an action before it runs (8 to 6). Bloom Security: Defines what agents can access, execute and transmit; runtime decisions on individual actions are not detailed. Onyx Security: Inspects every prompt, tool call and model response inline before acting on it.
Do Bloom Security and Onyx Security publish prices?
Bloom Security: not published. Bloom Security publishes no pricing. Onyx Security: not published. Onyx Security publishes no pricing.