Prismor
Runtime security control plane that intercepts every AI agent tool call before it executes.
Prismor is a credible, affordable safety net for teams running AI agents that call tools. The open-source runtime is genuinely free and effective, and the $15/month Starter is low-risk for most teams. Their benchmark data against production agents shows real risk reduction across all six harm categories. Skip it if you're not ready for policy-as-code or if your agents don't touch external tools. For production fleets, it's a strong option compared to generic app scanners that don't cover the tool-call boundary.
Verified 2d ago · liveness 73/100 · cite: rightaichoice.com/tools/prismor
- Enterprises running AI coding agents (Claude Code, Cursor, Codex) in production and needing guardrails
- Security teams that want audit trails and policy enforcement at the tool-call boundary
- Developers who need to prevent secret leaks from agent tool calls
- Compliance teams requiring SBOM and runtime attestation for AI agent activity
- Simple chatbots that don't call tools — security control plane is overkill
- Teams not currently using AI agents or coding assistants
- Organizations wanting a full SAST/DAST application security scanner
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Skip Prismor if you're not running AI agents that call external tools, or if you're not ready to adopt policy-as-code for security rules.
Starter plan caps you at 1 user, 5 agents, and 100k tool-interception events per month; beyond that, events pause until the next cycle or you must upgrade to Enterprise with custom pricing.
Prismor's freemium model is ideal for small teams: free open-source runtime, $15/mo Starter for solo devs, and custom Enterprise for fleets. Compared to generic app scanners that may charge per-seat or per-agent, Prismor's per-event cap (100k) is clear. For larger fleets, alternatives like commercial agent security platforms may quote higher, but Prismor's pricing is transparent and low-risk.
In short
Prismor — Runtime security control plane that intercepts every AI agent tool call before it executes. Best for Enterprises running AI coding agents (Claude Code, Cursor, Codex) in production and needing guardrails, Security teams that want audit trails and policy enforcement at the tool-call boundary, Developers who need to prevent secret leaks from agent tool calls. Free to start; paid plans from $15/mo.
What's new in Prismor
Checked 2 days agoAcross the latest 5 updates: 5 news mentions.
Why Agent Identity Needs More Than OAuth Delegation
Argues OAuth delegation insufficient for agent identity; calls for stronger controls at tool-call boundary.
Where AI Agent Security Tools Attach, and What Each One Misses
Survey of AI agent security tool attachment points; identifies gaps in existing approaches.
How to Build a Trustworthy AI Control Plane for Enterprises
Blueprints for enterprise AI control planes: policy enforcement, auditability, and tool-call boundary focus.
The EU AI Act Is in Motion: Scope, Timelines, and What Your Team Actually Has to Do
Breaks down EU AI Act scope and deadlines; practical compliance steps for engineering teams.
Google Dialogflow CX Rogue Agent Showed How One Playbook Editor Could Reach Every Code Block Agent
Case study on Dialogflow CX misconfiguration allowing cross-agent access; emphasizes need for execution boundaries.
What people actually say about Prismor — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
6 mentions across 1 source (Hacker News) · researched Jul 3, 2026.
- +Intercepts tool calls before execution, not after.
- +Masks secrets before they reach the model.
- +Detects and blocks prompt injection in real time.
- +Risk-scores npm, pip, and cargo package installs.
- +Provides policy-as-code with git-versioned rules.
- −Very little independent community feedback available.
- −Could introduce latency in tool call execution.
- −Supported frameworks may not cover all use cases.
- −No data on customer support responsiveness.
- −Policy as code requires YAML/JSON skills.
- • Data retention limits may push you to paid tiers
- • Custom integrations may require professional services
Viability Score
How well maintained and how widely used is Prismor? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: September 2026
How we score →Key Features
- Intercepts every tool call before execution
- Blocks destructive commands like rm -rf and curl | bash
- Masks secrets (API keys, DB credentials) before they reach the model
- Prompt injection detection with semantic guard
- Policy-as-code with git versioning, linting, and exemptions
- Live dashboard with verdicts: allowed, blocked, masked
- MCP gateway - one policy layer in front of every MCP server
- MCP Hub - inventory of servers & tools with deny controls
- Skill scanner - scans MCP servers and agent skills for risky capabilities
- Canary honeytokens that trip when agents look for credentials
- Scoped agent identity profiles with least-privilege IAM
- Supply chain risk scoring for npm/pip/cargo installs
- Network isolation with egress allowlists and tunnel detection
- Build scanning & auto-fix via GitHub App
- OpenTelemetry routing to any SIEM
About Prismor
Prismor is a runtime security control plane for AI agents, sitting between your agents and the tools they call. Every tool call is intercepted before execution, so destructive commands get blocked, secrets get masked before they ever reach the model, and every action lands in an audit trail you can read back. It's built for teams running coding agents like Claude Code, Cursor, and Codex, as well as frameworks like LangChain, CrewAI, and the OpenAI Agents SDK. If your agents call tools, Prismor gives you a layer of control that doesn't exist in the agent itself. At the core is policy-as-code. You write security rules once, version them in git, and apply them the same way you ship infra config. Set defaults for the whole org, override per team, grant exemptions per person. Every change sits in git for review. The open-source runtime is free forever, runs locally with no account, and gives you command interception, secret masking, prompt-injection detection, and a tamper-evident local audit trail. Paid tiers add the platform: a live dashboard showing every tool call with verdicts like allowed, blocked, or masked, plus full session timelines. The MCP gateway and MCP Hub put every MCP server behind one policy layer. The skill checker scans agent skills for hidden risks. Enterprise adds contextual learning, per-session taint control, human-in-the-loop approvals, and OpenTelemetry routing. The vendor's own benchmarks, run against production Claude Opus 5 and Codex (GPT-5.6) agents, show lower harmful outcome rates across all six categories of the Anthropic Societal Impacts framework: goal hijack, tool misuse, ID/priv abuse, supply chain, code execution, and memory poisoning. For teams deploying agents at scale, Prismor is a practical guardrail that plugs into existing workflows. It's not a general application security scanner; it's a specialized tool for the tool-call boundary where agent risk actually lives.
Behind the Verdict
Prismor addresses a real gap: the tool-call boundary where agent risk actually lives. Most security tools focus on the model or the network, but Prismor intercepts every tool call before it executes—blocking destructive commands like rm -rf and masking secrets before they reach the model. This is the kind of guardrail you want when your agents are handling production data. Strengths: - Policy-as-code: you can version, lint, and review security rules like infra config, which fits DevOps workflows. - Broad framework support: adapters for LangChain, CrewAI, OpenAI Agents SDK, and more, so you can guard agents you build, not just run. - Transparent pricing: free open-source tier, $15/month Starter, and Enterprise with no caps. - Benchmark evidence: vendor ran adversarial tests against production Claude Opus 5 and Codex agents, showing lower harmful outcome rates in all six categories. Weaknesses: - Requires policy-as-code mindset; if you prefer point-and-click, this may feel heavy. - Starter has usage caps (1 user, 5 agents, 100k events/month), which may not suit larger teams. - Some CLI docs are marked deprecated, so the surface is evolving. - Enterprise features like SSO and on-prem are behind custom pricing. The product is evolving, and the news around governance shows the space is heating up—Prismor's focus on the tool-call boundary is timely. If you're deploying agents at scale, it's worth a serious look.
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Real-world workflow fit
Concrete scenarios for the personas Prismor actually fits — and what changes day-one when you adopt it.
They install the Prismor CLI, run the setup wizard, and add a policy that blocks rm -rf and masks AWS keys. They review the live dashboard to see blocked attempts.
Outcome: Within an hour, they have a working security layer that prevents common destructive commands and secret leaks, with a full audit trail.
They connect the MCP gateway and hub, see all MCP servers and tools, and deny a risky tool call from the console.
Outcome: They can control MCP server access from a single policy layer, reducing risk from untrusted MCP integrations.
They use the export feature to pull a full session timeline with verdicts and SBOM for every tool call.
Outcome: They can produce evidence for audits, satisfying requirements for traceability of AI agent actions.
Use Cases
- Block destructive shell commands from AI coding agents in real time
- Mask API keys and database connection strings before they reach the model
- Detect and block prompt injection attacks with semantic guard
- Enforce least-privilege identities per agent with scoped tool permissions
- Generate SBOM and audit trail for every tool call for compliance
- Prevent supply chain attacks by risk-scoring npm/pip installs
- Scan MCP servers and agent skills for hidden risks
- Automate PR vulnerability scanning and fixes via GitHub App
Models Under the Hood
as of 2026-08-28
Limitations
- Prismor intercepts AI agent tool calls before execution, offering an open-source CLI runtime that is free forever and can be used without an account.
- The Starter platform adds a live dashboard, MCP gateway, contextual security, skill scanning, and 30 days of hosted history for $15/month after a free first month, covering 1 user, up to 5 agents, 100,000 tool-interception events, and 1,000 skill scans per month.
- Enterprise features like SSO, on-prem deployment, and org-wide policy hierarchy require custom pricing.
- The product is evolving, with some CLI documentation marked as deprecated.
- No stated support for other programming languages beyond the adapters listed.
as of 2026-09-01
Verification history
We have re-verified Prismor 7 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 7 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Prismor tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0 forever
Ideal for
Solo developers exploring agent security with no budget, wanting to protect local agent runs with no account.
What this tier adds
Starting tier: open-source CLI with command interception, secret masking, prompt injection detection, and local audit trail.
Starter
$15/month, first month free
Ideal for
Individual developers or very small teams needing a live dashboard and MCP gateway for up to 5 agents.
What this tier adds
Adds platform dashboard, MCP gateway/hub, contextual security, skill checker, and 30-day session history for $15/month.
Enterprise
Custom
Ideal for
Companies managing fleets of agents across teams, needing SSO, on-prem, and no usage caps.
What this tier adds
Adds contextual learning, per-session taint control, human-in-the-loop approvals, OpenTelemetry routing, and SSO/SCIM.
Where the pricing makes sense
The company stage and team size where Prismor's pricing actually pencils out — and where peers do it cheaper.
Prismor's freemium model is ideal for small teams: free open-source runtime, $15/mo Starter for solo devs, and custom Enterprise for fleets. Compared to generic app scanners that may charge per-seat or per-agent, Prismor's per-event cap (100k) is clear. For larger fleets, alternatives like commercial agent security platforms may quote higher, but Prismor's pricing is transparent and low-risk.
Setup time & first value
How long it actually takes to get something useful out of Prismor — broken out by persona, not the marketing-page minute.
Security engineer: ~30 minutes to install CLI and configure basic policies. Developer with MCP: ~1 hour to set up gateway and review tools. Compliance officer: ~2 hours to configure export and understand session timelines.
Switching to or from Prismor
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From manual guardrails: replace scattered scripts and manual reviews with Prismor's policy engine and audit trail.
- ↗To a general security platform: export audit logs and SBOM via OpenTelemetry for integration with existing SIEM.
Integrations
Resources & Guides
- Documentationprismor.dev
Docs · Prismor
Full product docs from prismor.dev
- Quickstartprismor.dev
Quickstart · Prismor
Get up and running fast from prismor.dev
- Documentationprismor.dev
Mcp Gateway · Prismor
Full product docs from prismor.dev
- Documentationprismor.dev
Skill Scanner · Prismor
Full product docs from prismor.dev
Tutorials & Learning
Official links
Featured Head-to-Head Comparisons
Prismor vs Audioeye
Prismor and AudioEye serve entirely different domains: Prismor secures AI agent tool calls for enterprises deploying coding agents, while AudioEye automates web accessibility compliance. Choose Prismor if you're a security team running AI agents and need runtime policy enforcement; choose AudioEye if you need ADA/WCAG compliance with scanning, remediation, and legal support. They are not direct competitors.
Prismor vs Push Security
Push Security is the better choice if your primary concern is browser-borne attacks and AI data leakage by employees, especially in SaaS-heavy environments. Prismor wins if you're deploying AI coding agents like Claude Code or Cursor and need runtime security for tool calls. They are complementary — Push protects the user browser side, Prismor protects the agent runtime side. Choose based on your immediate threat surface.
Prismor vs Sublime Security
Prismor and Sublime Security serve entirely different threat landscapes: Prismor secures AI agent tool calls (destructive commands, secret leaks, package supply chain risk) while Sublime defends email (BEC, phishing). Choose Prismor if you deploy coding agents like Claude Code or LangChain and need runtime guardrails; choose Sublime if your priority is email security with low false positives and custom detection.
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