Obsidian Security review

Obsidian Security is a security platform for AI agents, identities, and third-party apps. The company says it gives teams visibility into agents and integrations, governance over access, and runtime controls on agent activity. Its product scope also includes third-party app posture, audit and compliance, supply chain visibility, and threat detection and response.

That puts it in the SaaS security and AI security category, rather than the note-taking app category suggested by its name. The practical job is to help security teams find apps and agents, understand access and activity, and respond to risks across connected services. The pricing page lists a free tier for up to 1,000 users, with shadow AI and SaaS discovery and spear-phishing detection. The broader Foundations and Advanced tiers add governance and detection capabilities, but their prices are not published. Our read: it is worth considering when SaaS and AI visibility are the priority, but buyers should verify how well findings translate into safe remediation.

Obsidian’s clearest strength is the breadth of its stated coverage. The product brings AI agents, identities, integrations, and third-party apps into one security picture, rather than treating agent access as separate from the SaaS environment. Its listed capabilities include:

• Discovering shadow apps, AI, agents, integrations, and browser extensions.
• Reviewing third-party access, ownership, and last activity, and identifying access violations.
• Applying runtime guardrails and AI security controls, with threat triage, remediation, and full-chain forensics on Advanced.
• Detecting account takeover, session hijacking, insider risk, and sensitive data exposure on Advanced.

That split gives buyers a way to match the product to a use case: Foundations is described for discovery and governance, while Advanced is aimed at detection and incident response. A commenter in one Reddit thread described Obsidian as useful for visibility and said it monitors behavior deeply inside M365 or Salesforce. That is an individual report, not proof that every integration offers the same depth. Still, the combination of discovery, access review, and runtime controls is more relevant to AI-era SaaS risk than an inventory-only pitch—provided the controls work in the apps that matter to your team.

Pricing is the first limitation. The pricing page lists Free at $0 per month for up to 1,000 users; it does not publish prices for Foundations or Advanced, and it does not state annual billing terms. The free tier lists shadow AI and SaaS discovery and spear-phishing detection, but not the broader governance and response features named for paid plans. Ask for a quote and confirm which tier includes the controls you need before comparing it with another vendor.

There is also a gap to validate between finding an app and deciding what to do about it. In one Reddit thread, a commenter said shadow SaaS discovery produced a large inventory requiring manual triage; another discussion questioned whether some integrations provide actionable detection and remediation context. Those are user reports, not verified product-wide limitations, but they point to useful proof-of-concept questions: can the platform show app ownership, recent activity, OAuth scope risk, and the impact of revoking access? The product materials list last-activity review and remediation features, but do not publish specific integration coverage, remediation limits, or detection rates. Confirm those details against your own apps.

Obsidian Security lists a Free plan at $0 per month for up to 1,000 users. It includes discovery of unsanctioned AI and shadow SaaS, plus spear-phishing detection with no manual tuning. That is the only published price in the published pricing information.

Foundations and Advanced are quote-based; their prices are not published. Foundations covers discovery and governance, including shadow apps, agents, integrations, access violations, and compliance mapping. Advanced adds account-takeover and insider-risk detection, runtime guardrails, AI security controls, and incident response features. The published pricing page information does not state a dollar jump between tiers, so ask for quotes based on the same user count and requirements before comparing them.

No add-ons are listed. Annual billing is not stated, so confirm contract length, renewal terms, and whether the free plan has any limits beyond its 1,000-user cap. The free tier gives teams an entry point, but it does not reveal the cost of expanding into paid controls.

Treat the move as a discovery and governance project, not a simple license swap. Obsidian’s stated scope includes AI agents, identities, integrations, and third-party apps. Before committing, map which apps and access risks you need covered, then ask Obsidian to confirm integration coverage, remediation workflows, and the work required to connect your environment. The published information does not specify migration services or implementation effort.

Lock-in and exit details are also unclear: data-export options, retention after cancellation, and export formats are not published on the vendor's site. Get those answers in writing before moving alert history or governance workflows. The product verdict flags automated shadow-app cleanup and proven integration depth as concerns, so confirm what it can remediate rather than assume visibility means cleanup.

We were not given Reddit posts or comments for this review, so we can’t responsibly say what users report as reasons for leaving. Ask for customer references and a documented exit process before switching.