No. 21 of 29 ·AI Security Testing Tools

Crucible

Linux · Self-hosted

Freedom report

One barScore 5.1

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedThinly documented

Crucible is ranked #21 of 29 in AI security testing tools on Freedom251. It runs on Linux, Self-hosted. There is a free plan.

Crucible plans and pricing

All plans

Community Free For individual builders and open-source projects · Full CLI & all 8 test modules · 153 attack vectors across 11 modules · Local & CI reports (JSON/HTML) · Community Discord support crucible-security.github.io · 5 Oct 2026

Team Not published Early Access For teams shipping agents to production · Everything in Community · Drift monitoring & Slack alerts · Regression tracking · Hosted dashboards · Priority support crucible-security.github.io · 5 Oct 2026

Enterprise Not published Custom For orgs with compliance & scale requirements · Everything in Team · SSO, audit logs, on-prem / VPC deploy · Custom attack modules & SLAs · Dedicated security engineering support crucible-security.github.io · 5 Oct 2026

Compared on AI security testing tools

Free plan: Yes
Prompt injection tests: Yes
Jailbreak tests: Yes
Unsafe output tests: Yes
Custom test cases: Yes
Deployment mode: self_hosted

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The record

Purpose: Crucible stress-tests AI agents against attack vectors including prompt injection, goal hijacking, and tool misuse before production.
Attack coverage: The site lists 11 modules and 153 attack vectors, with 8 of 10 OWASP Agentic risks covered and two in active development.
Scan speed: Crucible says it runs 90 attack payloads against an agent in under 60 seconds.
Reports: Scans produce an A–F graded report with severity, OWASP mapping, and reproduction steps.
Testing approach: Crucible evaluates actual agent tool calls, side effects, and outcomes rather than only generated text.
Integrations: It supports LangChain, CrewAI, AutoGen, raw MCP endpoints, and agents with an HTTP or MCP interface.
CI/CD: The GitHub Actions integration can fail a build when an agent's security score drops below a configured threshold.
Install requirements: The CLI installs with pip, supports Python 3.10+, and the site says no Docker, cloud signup, or API key is needed to start.
Privacy: The site says local scanning requires no signup and has no telemetry by default.
License: The core engine and test modules are described as Apache 2.0 and free, with no feature gating on security tests.
Support: The Community plan lists Discord support, while Team lists priority support and Enterprise lists dedicated security engineering support.
Intended users: The Community plan is for individual builders and open-source projects, and Team is for teams shipping agents to production.
Maker: The team page names Khalid Saifullah Sayyed as Founder & Core and says the team was built in 2026.
Price from: Free

Where it ranks on Freedom251

Best AI Security Testing Tools in 2026#21 of 29

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Sources

crucible-security.github.io/crucible-website/· checked 5 Oct 2026