Nightfall

What it does

Nightfall is a security platform for organizational security teams. It detects sensitive information—including personal data, health and payment data, secrets, and source code—in SaaS, email, endpoint, browser, and AI-related activity. Its data discovery tools scan connected SaaS for exposed data, while its detection and response capabilities classify activity, apply policies, and can block or remediate actions. Alerts include contextual details such as the actor, data origin, and preceding activity.

For AI-agent and developer workflows, Nightfall describes an MCP Gateway and inference hooks that inspect prompts, tool calls, and responses during a session; it also detects prompt-injection attempts and shadow AI use. The platform can produce investigation context and trace data movement from origin to destination. The pricing page describes endpoint deployment and SaaS connections, with a demo or sales-assisted proof of value rather than a self-serve trial. Security teams should confirm which package, integrations, device coverage, and data volume they need: numeric rates require a quote, and some listed model-response coverage is monitor-only.

What it can do

• Detect and classify sensitive data in SaaS, email, endpoint, and AI activity
• Discover exposed data across connected SaaS applications
• Enforce real-time policy to block or remediate data exposure
• Inspect prompts, MCP tool calls, and responses with inference hooks
• Discover and inventory local and remote MCP servers
• Provide contextual alerts and data-movement lineage

Works with

• Salesforce
• Slack
• Google Drive
• Microsoft Teams
• Microsoft OneDrive
• Microsoft Exchange Online
• Gmail
• Microsoft SharePoint Online
• Atlassian Jira
• Atlassian Confluence

Before you choose

• Confirm annual per-user rates, required seats and data-volume charges.
• The described proof of value is time-limited and sales-assisted, not a self-serve recurring free tier.
• The pricing page says LLM model responses are monitor-only for specified developer hooks; verify enforcement scope, app coverage, and device limits for the selected package.

Listed under

• Security
• AI agent security
• Data loss prevention
• Dlp
• Endpoint security
• Mcp security
• SaaS security

Get started

1. Schedule a live demo or request the seven-day proof of value.
2. Work with Nightfall to connect a supported SaaS application or deploy the endpoint agent.
3. Review default detections and policies, then configure enforcement and remediation for the organization.

Packages are priced annually per user. The pricing page says each user license includes two endpoint devices. It lists 150 GB of data-at-rest scanning as included and annual add-on tiers of 1 TB, 3 TB, 5 TB, and 20 TB, but the add-on prices are blank. Confirm user minimums with sales. The page describes a seven-day sales-assisted proof of value.

7-day free trial.

Source: nightfall.ai/pricing, checked 2 Nov 2026. Prices can change; check before you buy.

Sources for this overview

Product pages, documentation, and pricing checked 2 Nov 2026. Each source supports part of the overview; availability and prices can change.

• Nightfall: AI Security Platform for Agents, MCP and Data Movement ↗www.nightfall.ai
• Plans and Pricing | Nightfall AI ↗www.nightfall.ai
• Nightfall: AI Data Security & Data Loss Prevention Platform ↗www.nightfall.ai
• Nightfall: AI Security Platform for Agents, MCP and Data Movement ↗www.nightfall.ai

Company website

nightfall.ai: product, pricing and policy pages

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Last checked 2 Nov 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.