CISO Tribune

Vendor comparison · 2 companies

Asymptote Labs vs Onyx Security

Asymptote Labs sells a runtime data platform for AI agents. Onyx Security sells a secure control plane for AI agents and models. CISO Tribune files both under AI model and agent security, AI governance and Workforce AI usage security. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Asymptote Labs
  • Onyx Security
Asymptote Labs vs Onyx Security: Products, Customers and Funding Compared
Asymptote LabsAsymptote Labs sells a runtime data platform for AI agents.asymptotelabs.aiOnyx SecurityOnyx Security sells a secure control plane for AI agents and models.onyx.security
What it sells
  • Agent Beacon[2][3][4]An open-source telemetry layer for capturing and normalizing agent activity across every environment.
  • Asymptote Platform[4]A managed runtime data platform for operating AI agents across the organization.
  • Asymptote Guard[7][9]Controls that steer behavior, block actions inline, revoke access, contain sessions, or terminate agents.
  • AI Security[1][7]Onyx provides the runtime and posture layer of the Onyx Secure AI Control Plane.
  • MCP Gateway[8]The MCP Gateway governs the agent-to-tool surface.
Categories
Headquarters
New York City, United States[2]Not stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately heldNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • October 20, 2026Asymptote Labs announced an oversubscribed $5.5 million seed round led by Tower Research Ventures.[12]
  • July 29, 2026Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners.[15]
  • March 12, 2026Onyx Security officially launched operations after securing $40 million in initial funding.[14]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, Onyx Security sells mainly to security, governance, and AI teams that need control over AI agent adoption across the enterprise. Onyx Security describes a single platform for security, governance, and infrastructure teams. Onyx Security offers cloud, hybrid, or self-hosted options for organisations with sensitive data residency requirements. Onyx Security presents one console for AI agents and models across SaaS, cloud, endpoint, and code environments. Onyx Security names security, finance, and platform teams as the teams that share its usage, cost, and policy ledger.
Last verified
October 21, 2026October 19, 2026

Where they overlap

  • AI model and agent security is the primary category of both Asymptote Labs and Onyx Security; both are also filed under AI governance and Workforce AI usage security.

Where they differ, field by field

  • Onyx Security is also filed under Non-human identity security.
  • Asymptote Labs lists Agent Beacon, Asymptote Platform and Asymptote Guard. Onyx Security lists AI Security and MCP Gateway.
  • Asymptote Labs is headquartered in New York City, United States.
  • Asymptote Labs is privately held.

How they differ

CISO Tribune files both Asymptote Labs and Onyx Security under AI model and agent security as the primary category, and both also appear under AI governance and Workforce AI usage security. CISO Tribune also files Onyx Security under Non-human identity security. Onyx Security sells a secure control plane for AI agents and models, with an AI Security product for runtime and posture and an MCP Gateway for the agent-to-tool surface.

Agent Beacon captures activity across 20+ agent harnesses including Claude Code, Cursor, Codex, and OpenClaw, and forwards normalized telemetry to Splunk, Datadog, and CrowdStrike. Onyx Security inspects prompts, tool calls, and model responses inline and offers five enforcement actions: alert, block, mask, steer, or ask. Onyx Security forwards alerts and session records to Splunk and CrowdStrike NG-SIEM. Asymptote Guard blocks actions inline, revokes access, contains sessions, or terminates agents. Both companies connect to Okta. Asymptote Labs can be self-hosted in AWS, Azure, or GCP, and Onyx Security offers cloud, hybrid, or self-hosted options.

Asymptote Labs is headquartered in New York City, United States, and is privately held. On October 20, 2026, Asymptote Labs announced an oversubscribed $5.5 million seed round led by Tower Research Ventures. On March 12, 2026, Onyx Security officially launched operations after securing $40 million in initial funding. On July 29, 2026, Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners. Onyx Security states that it holds SOC 2 Type II and ISO 27001 certifications.

What it sells: Asymptote Labs

What Agent Beacon does[2][3][4]
Agent Beacon captures activity across 20+ agent harnesses including Claude Code, Cursor, Codex, and OpenClaw. Agent Beacon forwards normalized telemetry to Splunk, Datadog, CrowdStrike, and other existing systems. Agent Beacon stores a portable local activity record in JSONL.
What Asymptote Platform does[4]
Asymptote Platform is a managed runtime data platform for operating AI agents across the organization. Asymptote Platform includes managed ingest, retention, search, and analytics. Asymptote Platform includes fleet-wide agent inventory and usage visibility.
What Asymptote Guard does[7][9]
Asymptote Guard steers behavior, blocks actions inline, revokes access, contains sessions, or terminates agents when needed. Asymptote Guard enforces model, budget, and session-level controls so teams can limit expensive usage, stop runaway workflows, and keep AI spend within policy.

What it sells: Onyx Security

What AI Security does[1][7]
Onyx provides the runtime and posture layer of the Onyx Secure AI Control Plane. Onyx inspects every prompt, tool call, and model response inline across browser AI, coding assistants, desktop AI agents, cloud workloads, and MCP servers. Onyx offers five enforcement actions: alert, block, mask, steer, or ask.
What MCP Gateway does[8]
The MCP Gateway governs the agent-to-tool surface. Every tool call an agent makes to an MCP server gets inspected and policy-enforced. MCP Gateway coverage spans the MCP ecosystem, including servers using dynamic client registration and popular servers like GitHub.

Questions about Asymptote Labs and Onyx Security

What do Asymptote Labs and Onyx Security sell?
Asymptote Labs sells Agent Beacon, Asymptote Platform and Asymptote Guard. Onyx Security sells AI Security and MCP Gateway.
Are Asymptote Labs and Onyx Security in the same category?
Yes. AI model and agent security is the primary category of both on CISO Tribune.
Where are Asymptote Labs and Onyx Security headquartered?
Asymptote Labs is headquartered in New York City, United States.
Who owns Asymptote Labs and Onyx Security?
Asymptote Labs is privately held.
Who are Asymptote Labs and Onyx Security sold to?
From its own pages, Onyx Security sells mainly to security, governance, and AI teams that need control over AI agent adoption across the enterprise.
What have Asymptote Labs and Onyx Security announced recently?
October 20, 2026: Asymptote Labs announced an oversubscribed $5.5 million seed round led by Tower Research Ventures. July 29, 2026: Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners.

About Asymptote Labs

Asymptote Labs sells a runtime data platform for AI agents. Asymptote gives teams one place to understand agent activity, investigate behavior, enforce controls, and analyze usage across tools and environments. Asymptote provides enterprise security and engineering teams a unified AI telemetry layer to see what agents are doing, govern how they operate, and continuously improve them over time.[3]

Asymptote says agents are spreading across tools and teams faster than organizations can track them. Asymptote says agents can access data and take actions without enough real-time oversight or control. Asymptote says teams can't see which agents are effective, failing, or wasting spend.[3]

Beacon is the open-source part of the offering. Asymptote is powered by Beacon, an open-source telemetry layer for capturing and normalizing agent activity across every environment. Agent Beacon is the open-source telemetry foundation, and the Asymptote platform builds on it with the managed control enterprises need to govern agent activity at scale. Agent Beacon captures activity across 20+ agent harnesses including Claude Code, Cursor, Codex, and OpenClaw. Agent Beacon forwards normalized telemetry to Splunk, Datadog, CrowdStrike, and other existing systems. Agent Beacon stores a portable local activity record in JSONL. Beacon gives Security and IT teams local endpoint visibility into supported agent harnesses. Beacon normalizes captured activity into a stable endpoint event schema and writes JSONL for local inspection or customer-managed forwarding.[3][4][5]

Beacon is deployed to endpoints in several ways. Asymptote deploys Beacon across endpoints with Jamf, Fleet, and other MDM workflows. Beacon macOS deployment uses a signed and notarized package distributed through Jamf Pro, Fleet, or another MDM. On Linux, the Beacon collector runs as a systemd service. Beacon browser chat telemetry is limited to the Claude.ai and ChatGPT conversation streams captured by the optional Agent Beacon browser extension.[4][5][6][10]

Asymptote Platform is the managed layer. Asymptote Platform is a managed runtime data platform for operating AI agents across the organization. Asymptote Platform includes managed ingest, retention, search, and analytics. Asymptote Platform includes fleet-wide agent inventory and usage visibility. Asymptote captures prompts, tool calls, file edits, approvals, and runtime events. Asymptote inventories Claude Code, Codex, Cursor, and other agent harnesses. Asymptote normalizes activity into one consistent source of agent runtime data.[3][4]

Asymptote builds a complete inventory of agents and the environments they run in across an organization. Asymptote detects malicious and suspicious agent behavior in real time, with the full execution context needed to understand what happened. Asymptote surfaces threats like secret access, prompt injection, malicious tool use, suspicious commands, and data exfiltration across the complete agent session. Asymptote Guard steers behavior, blocks actions inline, revokes access, contains sessions, or terminates agents when needed. Asymptote adds visibility into the agent runtime, including the harness, prompt context, tool calls, resources accessed, and policy decisions behind each action.[1][7]

Asymptote correlates every action in an agent session so engineers can pinpoint failed commands, retries, tool errors, slow steps, and execution loops. Asymptote lets engineering teams understand which agents, models, and workflows developers rely on across the organization. Asymptote connects model spend to the teams, agents, users, and workflows that generated it. Asymptote adds runtime context, connecting AI spend to specific users, agents, repositories, sessions, and workflows. Asymptote Guard enforces model, budget, and session-level controls so teams can limit expensive usage, stop runaway workflows, and keep AI spend within policy.[8][9]

Asymptote can be self-hosted in AWS, Azure, or GCP for tighter control over infrastructure, networking, and data residency. Asymptote offers dedicated infrastructure for organizations that need tighter control over how agent data is stored and operated. Asymptote integrates with providers like Okta for secure access without additional passwords. Asymptote protects data with AES-256 for storage and backups and TLS 1.2+ for all data in transit. Asymptote enforces zero-day retention with providers such as OpenAI and Anthropic, ensuring customer data is not stored or used for training. Asymptote connects to the tools teams already use and extends with custom actions for workflows and systems unique to a business.[4][10][11]

Asymptote Labs on the record

Sources

Asymptote Labs full record

  1. [1]asymptotelabs.aiAsymptote Labs · asymptotelabs.ai · undated page, accessed October 21, 2026 · Tier A
  2. [2]Asymptote labs raises 5 5m seed roundAsymptote Labs · asymptotelabs.ai · published October 20, 2026 · Tier A
  3. [3]Asymptote: Real-time Visibility & Control for AI AgentsAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  4. [4]PricingAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  5. [5]Security & IT Rollout Guide - AsymptoteAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  6. [6]Linux Install - AsymptoteAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  7. [7]Asymptote For Security & ITAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  8. [8]Asymptote For EngineeringAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  9. [9]Asymptote For AI FinOpsAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  10. [10]SecurityAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  11. [11]IntegrationsAsymptote Labs · undated page, accessed November 10, 2026 · Tier A
  12. [12]Asymptote Labs Raises $5.5M to Build Runtime Infrastructure for AI Agents | AsymptoteAsymptote Labs · published October 20, 2026 · Tier A

Onyx Security full record

  1. [1]onyx.securityOnyx Security · onyx.security · undated page, accessed October 19, 2026 · Tier A
  2. [2]The Secure AI Control Plane for the Agentic Era | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  3. [3]About Onyx | The Team Behind the AI Control PlaneOnyx Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]One Platform to Discover and Control Every AI Agent | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]AI Observability – Discover Every Agent & Session | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Agent Security | Block Prompt Injection in Real TimeOnyx Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]AI Governance Platform Built for the EU AI Act | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]AI Orchestration – Governed Routing & Control | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI ROI Platform – Prove Value & Control Costs | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Secure Claude Enterprise with Onyx | Anthropic IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]Secure ChatGPT Enterprise with Onyx | OpenAI IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Secure Amazon Bedrock Agents | Onyx IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]Copilot Studio Security – Discover, Govern & Control | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  14. [14]Israeli cyber firm Onyx Security launches operations with $40 million funding round | ReutersReuters · published March 12, 2026 · Tier B
  15. [15]Onyx Security Raises $113M Series B to Control Advanced AI, Quadrupling Revenue since Stealth Launch Four Months AgoBusiness Wire · published July 29, 2026 · Tier A

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