Prismor
FreemiumRuntime security control plane that intercepts every AI agent tool call before execution.
By Tanmay Verma, Founder · Last verified 06 Jul 2026
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Added 6d ago
77/100Safe BetIn short
Prismor — Runtime security control plane that intercepts every AI agent tool call before execution. Best for Enterprises deploying AI coding agents in production, Security teams needing audit trails and policy enforcement for agent tool calls, Developers using Claude Code / Cursor who want to prevent accidental secret leaks. Free to start; paid plans from $20/mo.
Is Prismor actually worth it?
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Editorial Verdict
Best for
Enterprises deploying AI coding agents in productionSecurity teams needing audit trails and policy enforcement for agent tool callsDevelopers using Claude Code / Cursor who want to prevent accidental secret leaksCompliance teams requiring SBOM and runtime attestation for agents
Not ideal for
Simple chatbots that don't call toolsTeams that don't use AI agents or coding assistantsOrganizations wanting a full SAST/DAST application security scanner
Prismor fills a critical gap in agent security by intercepting tool calls in real time, not just auditing after the fact. Its policy-as-code approach is mature, but the product is new (2026) and the free tier is limited. Worth adopting if you run production agents and need enforceable guardrails. For basic chatbots or non-agent workflows, consider a simpler tool like Guardrails AI or just logging.
Skip Prismor if Skip Prismor if you run simple chatbots that don't call external tools, or if your AI agents are already fully locked down by your infrastructure security team.
Last verified: July 2026
What's new in Prismor
Checked 3 days agoAcross the latest 2 updates: 1 launch and 1 news mention.
LaunchBlog·14 days agoNewest
Why We Built Prismor to Secure AI Coding Agents at the Tool-Call Boundary
Prismor announces its focus on securing AI coding agents by monitoring tool-call boundaries.
NewsBlog·Apr 13
Your AI Agent Remembers Your Secrets
Highlights how AI agents can inadvertently retain and expose secrets, a problem Prismor's secret masking solves.
What independent users actually report about Prismor
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).
85% positive15% critical
Recurring strengths
- +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.
Recurring frustrations
- −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.
Patterns worth knowing
Prismor is uniquely positioned for runtime security of AI agents, not just post-hoc auditing.
Seen on Hacker News
The security audit of popular agent frameworks demonstrated concrete value in uncovering vulnerabilities.
Seen on Hacker News
There is a strong desire for tools like Prismor to become mandatory in build processes to prevent supply chain attacks.
Seen on Hacker News
Learning curve
beginnerProductive in ~5 minutes
Hidden costs people mention
- • Data retention limits may push you to paid tiers
- • Custom integrations may require professional services
Viability Score
77/100
Safe BetHow likely is Prismor to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
momentum
55
funding runway
80
website health
90
wrapper dependency
100
Last calculated: July 2026
How we score →Key Features
- Intercepts every tool call before execution
- Blocks destructive commands (rm -rf, curl | bash, etc.)
- Masks secrets before they reach the model
- Detects and blocks prompt injection
- Risk-scores npm, pip, and cargo package installs
- Network egress allowlisting and tunnel detection
- Canary honeytokens
- Policy as code with git-versioned rules
- Org-wide policy with per-team overrides and exemptions
- Live telemetry dashboard and session forensics
- Integration with OpenAI Agents SDK, LangChain, CrewAI, Vercel AI SDK, MCP
- Automated SBOM generation and compliance reporting
- Scans MCP servers and agent skills for risky capabilities
- GitHub App for PR scanning and auto-fixes
- Supports Claude Code, Cursor, and browser-use agents
About Prismor
FreemiumIntermediateAPI availableCLI · Web · Plugin
Prismor is a runtime security control plane for AI agents that intercepts every tool call before execution, enforcing policy as code to block destructive actions, mask secrets, and prevent prompt injection. Designed for enterprises deploying coding agents like Claude Code, Cursor, or frameworks like LangChain and CrewAI, it provides a full audit trail and live dashboard of agent activity. It wraps agent frameworks in one step – supported frameworks include OpenAI Agents SDK, MCP agents, LangChain, CrewAI, and Vercel AI SDK. Key capabilities include secret cloaking, supply chain risk scoring for npm/pip/cargo installs, network egress allowlisting, canary honeytokens, and semantic guard for prompt injection detection. The platform offers both CLI and web dashboard for session telemetry and forensics. Pricing starts at $0/month for solo developers.
Behind the Verdict
Prismor addresses a real and growing pain: AI coding agents making destructive or insecure tool calls. The real-time interception approach is a clear differentiator from post-hoc scanning tools. The policy-as-code model with layered org/team/person overrides is well-suited for enterprise compliance. The free tier gives solo developers a useful safety net, but the most valuable features – prompt injection detection, IAM, session replay – are locked behind the $20/month Starter Team plan. The product launched in 2026, so the ecosystem of integrations and community support is still young. If you're running Claude Code, Cursor, or LangChain agents in production, Prismor is worth a trial. If you just need a simple chatbot that doesn't call tools, it's overkill.
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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.
Solo developer using Claude Code
Install Prismor CLI in one step, add a policy to block rm -rf and mask API keys, then run Claude Code with full protection.
Outcome: All destructive commands blocked, secrets masked before reaching model, full audit trail accessible via dashboard.
Enterprise security team deploying LangChain agents across teams
Wire Prismor into LangChain via guard_tools(), set org-level policies in Git, override per team with scoped IAM.
Outcome: Every tool call intercepted and governed; policy changes versioned; compliance export available on demand.
Startup using OpenAI Agents SDK in production
Add Prismor one-liner to agent setup, enable prompt injection detection, configure network egress allowlist.
Outcome: Reduced risk of data exfiltration; prompt injection blocked; telemetry dashboard shows live agent activity.
Use Cases
- Block destructive shell commands (rm -rf, curl | bash) from AI coding agents in real time.
- Mask API keys and database connection strings before they reach the model's context.
- Detect and block prompt injection attacks by analyzing tool calls with semantic guard.
- Enforce least-privilege identities per agent with scoped tool permissions.
- Generate SBOM and audit trail for every tool call to meet compliance requirements.
- Prevent supply chain attacks by risk-scoring npm/pip installs before execution.
Models Under the Hood
Semantic Guard (LLM-based intent check)
as of 2026-07-06
Limitations
- The free tier only includes CLI interception, secret masking, and audit trail – prompt injection detection and IAM require the $20/month Starter Team plan.
- Enterprise features (org-wide policy hierarchy, SSO, on-prem) are available only on custom pricing.
- The product is relatively new (launched 2026), so the ecosystem of integrations and community support is still growing.
as of 2026-07-06
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Annual total
Free
Over 12 months
Effective monthly
Free
Billed monthly
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/month
Ideal for
Solo developer experimenting with AI coding agents who wants basic protection against destructive commands and secret leaks.
What this tier adds
Starting tier: CLI-based interception, secret masking, audit trail for one user – no prompt injection detection or IAM.
Starter Team
$20/month
Ideal for
Small team collaborating on agent development who needs agent IAM, prompt injection detection, and session replay.
What this tier adds
Adds agent IAM with named identities, prompt injection detection, team policy overrides, and session replay over Free.
Enterprise
Custom
Ideal for
Large organization requiring org-wide policy hierarchy, SSO, on-prem deployment, and priority support for high-throughput agent usage.
What this tier adds
Adds org-wide policy hierarchy with per-team overrides, SSO, hardened rules, high throughput, on-prem deployment, priority support over Starter Team.
Integrations
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 pricing is competitive for agent security: the Free tier is ideal for solo developers, while the $20/month Starter Team plan undercuts many enterprise security tools. For larger teams, custom Enterprise pricing aligns with competitors like Guardrails AI or Datadog's security offerings.
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.
Solo developers can install Prismor CLI and have it intercepting tool calls in under 10 minutes. Enterprise deployments with layered policy and IAM may take 1-2 hours for initial configuration and team rollout.
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.
Migrating in
- →From manual logging: Replace custom shell hooks with Prismor's policy engine for automated enforcement.
- →From no security: Add Prismor CLI to existing agent setup - no code changes required.
- →From alternative guardrails: Migrate rules into Prismor's policy.yaml format, then switch the adapter.
Migrating out
- ↗To no security: Remove the Prismor wrapper from your agent framework - agents continue to work without interruption.
- ↗To a different guardrail tool: Adapt your Prismor policies to the new tool's rule format.
Resources & Guides
- Documentationprismor.dev
Docs · Prismor
Full product docs from prismor.dev
- Quickstartprismor.dev
Getting Started · Prismor
Get up and running fast from prismor.dev
- Documentationprismor.dev
Github App · Prismor
Full product docs from prismor.dev
- API Referenceprismor.dev
Cli · Prismor
Methods, params, types from prismor.dev
- Documentationprismor.dev
Architecture · Prismor
Full product docs from prismor.dev
- Documentationprismor.dev
Framework Adapters · Prismor
Full product docs from prismor.dev
- Documentationprismor.dev
Integrations · Prismor
Full product docs from prismor.dev
- Documentationprismor.dev
Sbom Visualizer · Prismor
Full product docs from prismor.dev
- Documentationprismor.dev
Prompt Injection Scanner · Prismor
Full product docs from prismor.dev
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