# n8n Review 2026: Features, Strengths and Gaps | SealGate

An honest n8n review: what it is, where it is strong, and where it falls short for runtime agent data security, with a source-checked feature comparison against SealGate.

Source: https://sealgate.ai/comparison/n8n-review

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Workflow automation platform

# n8n review

What n8n is, where it is strong, and where it falls short for securing AI agents and their tool calls. Every claim is drawn from n8n's own public material, listed in Sources.

Last updated: September 2026

## What n8n is

n8n is a fair-code (source-available), self-hostable workflow-automation platform where you build integrations and AI-agent workflows on a visual node canvas, with 400+ connectors and native MCP client and server nodes.

## Where n8n is strong

- SSO, SCIM and RBAC. Enterprise identity, group sync and role-based access.
- Self-host, on-prem or VPC. Run it in your own environment for data residency.
- Open source core. An open, inspectable core rather than a closed proxy.

## Where n8n falls short

Measured against a runtime agent data firewall. These are the gaps that matter if your priority is stopping data loss at the point of the tool call.

- n8n orchestrates agents and tools; it does not sit inline as a security control on agent tool calls, with no runtime DLP, PII or secrets scanning, no prompt-injection or tool-poisoning defense, and no pre-execution blocking of dangerous calls.
- SealGate is a device-level endpoint agent that discovers and governs MCP activity on the machine, including shadow-MCP discovery, and keeps local stdio MCP servers on-device; n8n has no endpoint agent and is not an MCP governance gateway.
- SealGate produces provable per-call security audit (agent, tool, policy version, result) with a CEL policy engine; n8n offers workflow execution logs and enterprise log streaming, which is operational logging rather than agent-tool-call security telemetry.
- Credit to n8n: a source-available, fully self-hostable, air-gappable core with SSO, SAML, LDAP, RBAC and SOC 2 Type 2, strong platform hygiene that is simply not an agent security firewall.

## n8n vs SealGate, feature by feature

SealGate leads with the rows at the top, its clearest points of difference, then the parity rows every enterprise gateway is expected to cover.

| Capability | SealGate | n8n |
| --- | --- | --- |
| How local stdio MCP servers are handled. Whether your local MCP server stays on the device or is shipped elsewhere. | Tunnel in place (Yes) | Not an MCP gateway (No) |
| Local stdio servers stay on-device. The server keeps running on the machine, with no host-and-lift and no HTTP re-expose. | ✓ Yes | ✕ No |
| Device-level management. An endpoint agent that discovers and governs MCP activity on the device itself. | ✓ Yes | ✕ No |
| Interface coverage. Whether the gateway governs only the MCP protocol, or the agent CLI and LLM API too. | MCP + CLI (Yes) | Workflow nodes (No) |
| Runtime enforcement. Blocks a dangerous tool call before it executes, not just after the fact. | ✓ Yes | ✕ No |
| DLP, PII and secrets scanning. Inspects tool inputs and outputs for sensitive data at runtime. | ✓ Yes | ✕ No |
| Prompt injection and tool-poisoning defense. Detects and stops injection, tool poisoning and rug-pull attacks. | ✓ Yes | ✕ No |
| Gateway holds the credential. The gateway issues the final call so the agent cannot bypass policy and retry. | ✓ Yes | ~ Partial |
| Shadow MCP discovery. Finds unauthorized MCP servers before they are used. | ✓ Yes | ✕ No |
| Provable per-call audit. A receipt for every call: agent, tool, policy version, result. | ✓ Yes | ~ Partial |
| SIEM integration and export. Streams audit events to Splunk, Sentinel and other SIEMs. | ✓ Yes | ~ Partial |
| SSO, SCIM and RBAC. Enterprise identity, group sync and role-based access. | ✓ Yes | ✓ Yes |
| Tool-level policy. Read and write tiers, per-tool rules and human-in-the-loop approvals. | ✓ Yes | ~ Partial |
| Self-host, on-prem or VPC. Run it in your own environment for data residency. | ✓ Yes | ✓ Yes |
| Compliance mapping. Evidence mapped to SOC 2, NIST AI RMF and the EU AI Act. | ~ Partial | ~ Partial |
| Low latency overhead. Minimal added latency on the tool-call path. | ✓ Yes | – Not publicly verified |
| Open source core. An open, inspectable core rather than a closed proxy. | ✕ No | ✓ Yes |

›

✓ Strong or native ~ Partial or via a partner ✕ Not offered – Not publicly verified

Bottom line: n8n is where you build and run agent and integration workflows; SealGate is the runtime security firewall that governs and inspects the tool traffic those agents produce, so teams often run both.

## How SealGate delivers this

The capabilities above are covered in depth on the product, security and deployment pages.

[How the SealGate gateway works](https://sealgate.ai/product) [Runtime DLP and prompt-injection defense](https://sealgate.ai/security) [Self-hosting and data residency](https://sealgate.ai/self-hosting)

## Evaluating n8n for agent security?

See how SealGate blocks dangerous tool calls, scans for data loss, and keeps local servers on the device. Start free, or book a walkthrough.

[Start Free](https://dashboard.sealgate.ai) [Book a Demo](https://sealgate.ai/contact)

## Frequently asked questions

Is SealGate an alternative to n8n? No. They solve different problems: n8n builds and runs automation and AI-agent workflows, while SealGate is a runtime security and DLP firewall that inspects and enforces policy on the agent tool traffic. Teams commonly run both, building agents in n8n and governing their tool calls with SealGate.

Doesn't n8n already secure my AI agents? n8n secures the platform (SSO, RBAC, self-host, SOC 2) and stores credentials for its own nodes, but it does not scan tool inputs and outputs for sensitive data, stop prompt injection or tool poisoning, block dangerous tool calls at runtime, or discover unauthorized MCP servers on the endpoint.

What is n8n? n8n is a fair-code (source-available), self-hostable workflow-automation platform where you build integrations and AI-agent workflows on a visual node canvas, with 400+ connectors and native MCP client and server nodes.

What are the main limitations of n8n? The clearest gap for teams focused on runtime data security: n8n orchestrates agents and tools; it does not sit inline as a security control on agent tool calls, with no runtime DLP, PII or secrets scanning, no prompt-injection or tool-poisoning defense, and no pre-execution blocking of dangerous calls. Weigh this against your own priorities before deciding.

Is n8n worth it? It depends on the axis you care about. n8n is where you build and run agent and integration workflows; SealGate is the runtime security firewall that governs and inspects the tool traffic those agents produce, so teams often run both. Compare the two on the capabilities that matter to you.

## Sources

Claims about n8n are drawn from its own public documentation, last reviewed September 2026. If something is out of date, tell us at [hello@sealgate.ai](mailto:hello@sealgate.ai) and we will correct it.

- [n8n docs: compare editions](https://docs.n8n.io/deploy/host-n8n/community-edition-features)
- [n8n docs: set up SSO](https://docs.n8n.io/hosting/securing/set-up-sso/)
- [n8n Sustainable Use License](https://docs.n8n.io/sustainable-use-license/)
- [n8n (GitHub)](https://github.com/n8n-io/n8n)

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