CISO Tribune

Vendor comparison · 2 companies

Endor Labs vs Promptfoo

Endor Labs sells AURI, a security intelligence layer for AI coding agents. Promptfoo builds open-source tools for secure, reliable AI applications. CISO Tribune files both under Static application security testing. 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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  • Endor Labs
  • Promptfoo
Endor Labs vs Promptfoo: Products, Customers and Funding Compared
Endor LabsEndor Labs sells AURI, a security intelligence layer for AI coding agents.endorlabs.comPromptfooPromptfoo builds open-source tools for secure, reliable AI applications.promptfoo.dev
What it sells
  • AURI[3][4][5]A security intelligence layer for AI coding agents.
  • AI Coding Agent Governance[5]Shows which models, MCP servers, and tools are active in a development environment.
  • Container Reachability[6]Extends function-level reachability through the runtime and OS layers.
  • Red Teaming[2][4][5]Simulates real users to uncover application-specific vulnerabilities.
  • Evaluations[2][5]LLM evaluation of prompts and models that can run inside CI workflows.
Categories
Headquarters
Not stated on its pagesSan Francisco, United States[1][3]
Founded
Not stated on its pages2024[1][12]
Ownership and funding
Privately held[9]Owned by OpenAI[12]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • March 9, 2026OpenAI agreed to buy Promptfoo, a startup helping businesses find and fix security issues in AI models during development.[13]
  • March 9, 2026OpenAI announced it has acquired Promptfoo, an AI security startup founded in 2024 to protect LLMs from adversarial attacks.[12]
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[9]
  • 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
From its own pages, the company sells mainly to security teams and developers in organizations where coding agents write code and install dependencies. Its pages describe coverage from startup to enterprise. Its package controls apply on developer laptops and in CI/CD pipelines. Its pre-built workflows run on the customer's own infrastructure, read-only by default.Not written yet
Last verified
November 6, 2026November 4, 2026

Where they overlap

  • Endor Labs and Promptfoo are both filed under Static application security testing.

Where they differ, field by field

  • Endor Labs's primary category is Software composition analysis; Promptfoo's is AI model and agent security.
  • Endor Labs is also filed under Secrets detection and Software supply chain security. Promptfoo is also filed under AI firewalls and guardrails and Breach simulation and automated pen-testing.
  • Endor Labs lists AURI, AI Coding Agent Governance and Container Reachability. Promptfoo lists Red Teaming and Evaluations.
  • Promptfoo is headquartered in San Francisco, United States.
  • Promptfoo was founded in 2024.
  • Endor Labs is privately held. Promptfoo is owned by OpenAI.

What it sells: Endor Labs

What AURI does[3][4][5]
AURI plugs into the coding agent harness to block malicious packages before install, verify code is secure, fix vulnerabilities, and flag secrets before they are leaked. AURI inventories every coding agent, model, MCP server, and skill.
What AI Coding Agent Governance does[5]
AI Coding Agent Governance shows which models, MCP servers, and tools are active in a development environment and whether their behavior matches policies. Every agent action is checked against policy before it runs, with the outcomes allow, block, or ask a human. Every action is recorded.
What Container Reachability does[6]
Container Reachability by Endor Labs extends function-level reachability through the runtime and OS layers. Container Reachability classifies every package as Reachable, Potentially Reachable, or Unreachable, application by application. Reachability from code to image needs nothing to be installed in the cluster.

What it sells: Promptfoo

What Red Teaming does[2][4][5]
Promptfoo creates thousands of context-aware attacks tailored to the customer's application. The open-source Community version includes up to 10k probes per month at no charge.
What Evaluations does[2][5]
Promptfoo's LLM evaluation can be integrated into a CircleCI pipeline. Promptfoo can be integrated with test frameworks like Jest and Vitest to evaluate prompts as part of existing testing and CI workflows. Promptfoo provides real-time alerts and automated evaluations to show LLM security status across all projects.

Questions about Endor Labs and Promptfoo

What do Endor Labs and Promptfoo sell?
Endor Labs sells AURI, AI Coding Agent Governance and Container Reachability. Promptfoo sells Red Teaming and Evaluations.
Are Endor Labs and Promptfoo in the same category?
They share Static application security testing. Endor Labs's primary category is Software composition analysis and Promptfoo's is AI model and agent security.
Where are Endor Labs and Promptfoo headquartered?
Promptfoo is headquartered in San Francisco, United States.
When were Endor Labs and Promptfoo founded?
Promptfoo was founded in 2024.
Who owns Endor Labs and Promptfoo?
Endor Labs is privately held. Promptfoo is owned by OpenAI.
Who are Endor Labs and Promptfoo sold to?
From its own pages, the company sells mainly to security teams and developers in organizations where coding agents write code and install dependencies.
What have Endor Labs and Promptfoo announced recently?
March 9, 2026: OpenAI agreed to buy Promptfoo, a startup helping businesses find and fix security issues in AI models during development.

About Endor Labs

Endor Labs sells AURI, a security intelligence layer for AI coding agents. AURI plugs into the coding agent harness to block malicious packages before install, verify code is secure, fix vulnerabilities, and flag secrets before they are leaked. AURI inventories every coding agent, model, MCP server, and skill. AURI learns architecture from context files such as AGENTS.md and CLAUDE.md, design docs, and custom prompts. Endor Labs replaces disconnected scanners, triage queues, and remediation handoffs with one continuously managed workflow.[3][4]

Endor Labs describes a problem in which coding agents require privileged access but can expose sensitive data, credentials, or run unsafe commands. Endor Labs states that coding agents are already writing code, installing dependencies, and shipping changes across an organization, and that most security teams cannot yet answer for any of it. Endor Labs also states that every model, skill, MCP server, and tool call extends the supply chain.[4]

Endor Labs anchors every finding to its code context graph, a continuously updated model of application behavior across code, dependencies, secrets, and containers. AURI can orchestrate its own agents, with their own sub-agents, that navigate the code context graph to detect, triage, validate, and remediate vulnerabilities. AURI by Endor Labs combines LLM-based reasoning with program analysis trained on ground-truth vulnerability data. AURI maps how data flows through source code, through direct and transitive dependencies, and into container base images. AURI security agents are catching emerging malware campaigns across npm, PyPI, Maven, and other package ecosystems in real time. AURI is the engine behind the AI SAST of Endor Labs.[3][5]

Developer, architect, and security engineer agents review every PR for architectural risk. Pre-built workflows triage findings and remediate dependencies using codebase context from AURI. The pre-built workflows run on the customer's infrastructure, read-only by default, with every change approval-gated. Every agent action is checked against policy before it runs, with the outcomes allow, block, or ask a human, and every action is recorded. AI Coding Agent Governance shows which models, MCP servers, and tools are active in a development environment and whether their behavior matches policies.[4][5]

Only vulnerabilities that application code can reach are added to the backlog. Endor Labs analyzes call graphs across first-party code, direct and transitive dependencies, and container layers to determine whether an application can actually invoke a vulnerable function. Container Reachability by Endor Labs extends function-level reachability through the runtime and OS layers, classifying every package as Reachable, Potentially Reachable, or Unreachable, application by application. Reachability from code to image needs nothing to be installed in the cluster. Upgrade impact analysis shows which breaking changes a patch will trigger before anyone touches a version number. Endor Patches fix vulnerabilities in hard-to-upgrade libraries without forcing a major version bump. SBOM generation, artifact signing, and CI/CD posture management are part of coverage from dependency selection through delivery.[1][4][5][6]

Package Firewall was released in May to help organizations stop software supply chain attacks by preventing installs of malicious packages on developer laptops or in CI/CD pipelines. Package Firewall scans newly published packages across npm, PyPI, and other ecosystems and flags emerging malware campaigns in under 10 minutes. Package Firewall blocks both developers and coding agents from pulling malicious packages into a local machine or CI runner. Package Firewall enforces a cooldown policy so that package versions need to be a sufficient age to be installed. Package Firewall cross-checks package versions against a malware database in case a malicious version is available on the registry beyond the cooldown period. Malicious packages are blocked at install, with one control point for every dependency entering the organization from an agent or a developer.[1][4][5][7]

Endor Labs launched AURI alongside a partnership with OpenHands. AURI integrates through a plugin that bundles dozens of security skills into a full-stack security review spanning code, secrets, dependencies, and container images. AURI is available to everyone, and its Skills plugin, MCP, and CLI are free for developers. Developers can use these tools to detect vulnerabilities and exposed secrets in code and open source dependencies, block malware attacks, and fix security bugs.[1][2][3][8]

Endor Labs on the record

Sources

Endor Labs full record

  1. [1]endorlabs.comEndor Labs · endorlabs.com · undated page, accessed November 6, 2026 · Tier A
  2. [2]Endor labs drives 225 revenue growth pioneers the future of secure sdlcEndor Labs · endorlabs.com · published September 16, 2025 · Tier A
  3. [3]Introducing AURI: Security Intelligence for AI Coding Agents and Developers | Endor LabsEndor Labs · undated page, accessed November 10, 2026 · Tier A
  4. [4]Endor Labs | Agentic Application Security PlatformEndor Labs · undated page, accessed November 10, 2026 · Tier A
  5. [5]Endor Labs Recognized by Gartner® in the 2026 Hype Cycle™ for Application Security | Endor LabsEndor Labs · undated page, accessed November 10, 2026 · Tier A
  6. [6]Container Security & Reachability | Endor LabsEndor Labs · undated page, accessed November 10, 2026 · Tier A
  7. [7]Customer Zero: Implementing Package Firewall at Endor Labs | Endor LabsEndor Labs · undated page, accessed November 10, 2026 · Tier A
  8. [8]Customers | Endor LabsEndor Labs · undated page, accessed November 10, 2026 · Tier A
  9. [9]Endor Labs Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 10, 2026 · Tier C

Promptfoo full record

  1. [1]PressPromptfoo · promptfoo.dev · undated page, accessed November 4, 2026 · Tier A
  2. [2]promptfoo.devPromptfoo · promptfoo.dev · undated page, accessed November 4, 2026 · Tier A
  3. [3]About Promptfoo | AI Security Experts | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  4. [4]Build Secure AI Applications | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  5. [5]Pricing | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  6. [6]Setting up Promptfoo with CircleCI | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  7. [7]Testing prompts with Jest and Vitest | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  8. [8]Finding LLM Jailbreaks with Burp Suite | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  9. [9]SharePoint Integration | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  10. [10]Langfuse integration | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  11. [11]AI Security for Real Estate | PromptfooPromptfoo · undated page, accessed November 10, 2026 · Tier A
  12. [12]OpenAI acquires Promptfoo to secure its AI agents | TechCrunchTechCrunch · published March 9, 2026 · Tier B
  13. [13]OpenAI Buying AI Security Startup Promptfoo to Safeguard AI Agents - BloombergBloomberg · published March 9, 2026 · Tier B

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