# Promptfoo MCP Proxy vs Witness AI for Developers: side-by-side comparison (2026)

[Promptfoo MCP Proxy](https://cybersectools.com/tools/promptfoo-mcp-proxy) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Promptfoo](https://cybersectools.com/companies/promptfoo). [Witness AI for Developers](https://cybersectools.com/tools/witness-ai-for-developers) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [WitnessAI](https://cybersectools.com/companies/witnessai). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Agentic AI Security Solutions for Business](https://cybersectools.com/shortlists/best-agentic-ai-security-solutions) picks CrowdStrike Falcon Guardian, Rubrik Agent Cloud, Silverfort AI Agent Security and 5 more.

## Side-by-side comparison

| | Promptfoo MCP Proxy | Witness AI for Developers |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Agentic AI Security | Agentic AI Security |
| Verified | No | No |
| Deployment type | Cloud | Hybrid |
| Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Promptfoo | WitnessAI |
| Headquarters | – | – |

### Use cases and capabilities

| | Promptfoo MCP Proxy | Witness AI for Developers |
|---|---|---|
| MCP Security | Yes | – |
| Agentic AI Security | Yes | – |
| AI Gateway | Yes | – |
| AI Observability | Yes | – |
| Proxy | Yes | – |
| Whitelist | Yes | – |
| PII | Yes | Yes |
| Sensitive Data | Yes | – |
| Log Management | Yes | – |
| AI Governance | Yes | – |
| Policy | – | Yes |
| Secrets Management | – | Yes |

### Core features

**Promptfoo MCP Proxy**

6 features listed. Sign in on the page to see them.

**Witness AI for Developers**

10 features listed. Sign in on the page to see them.

### Integrations

**Promptfoo MCP Proxy**

2 integrations listed. Sign in on the page to see them.

**Witness AI for Developers**

4 integrations listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Promptfoo MCP Proxy](https://cybersectools.com/tools/promptfoo-mcp-proxy) fits if you want a cloud product.
- [Witness AI for Developers](https://cybersectools.com/tools/witness-ai-for-developers) fits if you need both cloud and on-premises options and you are a small business.

## Promptfoo MCP Proxy vs Witness AI for Developers FAQ

Common questions when comparing Promptfoo MCP Proxy vs Witness AI for Developers for agentic AI security.

### What is the difference between Promptfoo MCP Proxy and Witness AI for Developers?

**Promptfoo MCP Proxy**: Proxy layer for controlling and monitoring MCP server access in AI apps. Built by Promptfoo.

**Witness AI for Developers**: Security platform for AI coding assistants and development agents. Built by WitnessAI.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Promptfoo MCP Proxy and Witness AI for Developers?

**Promptfoo MCP Proxy** is made by Promptfoo. **Witness AI for Developers** is made by WitnessAI. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Promptfoo MCP Proxy a good alternative to Witness AI for Developers?

Often, yes. Promptfoo MCP Proxy and Witness AI for Developers are both Agentic AI Security products, and both cover PII. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Promptfoo MCP Proxy vs KeyRunner](https://cybersectools.com/compare/keyrunner-vs-promptfoo-mcp-proxy)
- [Promptfoo MCP Proxy vs Agen.co Platform](https://cybersectools.com/compare/agenco-platform-vs-promptfoo-mcp-proxy)
- [Promptfoo MCP Proxy vs First Recon AI Agent Management](https://cybersectools.com/compare/first-recon-ai-agent-management-vs-promptfoo-mcp-proxy)
- [Witness AI for Developers vs KeyRunner](https://cybersectools.com/compare/keyrunner-vs-witness-ai-for-developers)
- [Witness AI for Developers vs Agen.co Platform](https://cybersectools.com/compare/agenco-platform-vs-witness-ai-for-developers)
- [Witness AI for Developers vs First Recon AI Agent Management](https://cybersectools.com/compare/first-recon-ai-agent-management-vs-witness-ai-for-developers)

## Alternatives to each

- [See all Promptfoo MCP Proxy alternatives](https://cybersectools.com/alternatives/promptfoo-mcp-proxy)
- [See all Witness AI for Developers alternatives](https://cybersectools.com/alternatives/witness-ai-for-developers)

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Source: https://cybersectools.com/compare/promptfoo-mcp-proxy-vs-witness-ai-for-developers

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/promptfoo-mcp-proxy.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Promptfoo MCP Proxy and Witness AI for Developers: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md