Contrast AI SmartFix vs Nullify autonomous product-security agents
Quick answer
Contrast AI SmartFix (agentic vulnerability remediation) (Contrast Security) and Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent) (Nullify (Nullify Holdings Pty Ltd)) are both listed in the Code security category of Agent Index.
They share no framework tags in our dataset.
This is not a ranking.
Contrast AI SmartFix (agentic vulnerability remediation) (Contrast Security) and Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent) (Nullify (Nullify Holdings Pty Ltd)) are both listed in the Code security category of Agent Index. They share no framework tags in our dataset.
| Field |  Contrast AI SmartFix (agentic vulnerability remediation) |  Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent) |
|---|---|---|
| Vendor | Contrast Security | Nullify (Nullify Holdings Pty Ltd) |
| HQ | United States · North America | Australia · Australia and New Zealand |
| Primary category | Code security | Code security |
| Also listed in | Code security | Code security, Security |
| Summary | An AI agent that runs as a GitHub Action, takes vulnerabilities found by Contrast's IAST (Assess) and SAST, writes code fixes using runtime context, runs your build and tests, and opens pull requests for developers to review. | Australian 'autonomous system of agents' for product security that covers code, secrets, API pentesting and exploit validation. It proves findings with reproducible evidence, scores them against the customer's assets, writes merge-ready fix PRs routed to code owners, and runs remediation campaigns through Jira and Slack until merge, with the customer keeping final merge approval. |
| Frameworks (vendor-stated) | — | — |
| Frameworks (vendor-claimed) | — | — |
| Capabilities / tasks | appsec, sast, remediation, pr review | appsec, sast, sca, secrets detection, remediation, vulnerability management, pen test management |
| Pricing (as published) | Not published | Not published. Nullify says it prices on work performed (scoped program and estimated volume), not seats or license tiers. |
| Pricing model | quote | quote |
| Primary source | https://docs.contrastsecurity.com/en/contrast-ai-smartfix.html | https://www.nullify.ai/ |
| Last checked | 2026-10-18 | 2026-10-19 |
| Official site | https://docs.contrastsecurity.com/en/contrast-ai-smartfix.html | https://www.nullify.ai/ |
FAQ (from this dataset)
What is the difference between Contrast AI SmartFix and Nullify autonomous product-security agents?
Both are listed under Code security. Shared tasks: appsec, sast, remediation. Contrast AI SmartFix-only tasks: pr-review. Nullify autonomous product-security agents-only tasks: sca, secrets-detection, vulnerability-management, pen-test-management. Differences are from stored category and task tags, not a ranking.
Which one publishes pricing?
Contrast AI SmartFix (agentic vulnerability remediation): Not published Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent): Not published. Nullify says it prices on work performed (scoped program and estimated volume), not seats or license tiers.
Where are Contrast AI SmartFix and Nullify autonomous product-security agents headquartered?
Contrast AI SmartFix (agentic vulnerability remediation) publishes HQ in United States. Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent) publishes HQ in Australia.
Also in this use case
Other verified listings that share a task tag or use-case group with Contrast AI SmartFix (agentic vulnerability remediation) or Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent). Open a pair page or the use-case table — this is not a ranking.
- Amnify security agents (agent-driven code audit, AI pentesting, PR review and autofix pull requests) — German AppSec product from Düsseldorf: a team of agents audits repositories (SAST, secrets, SCA, IaC, CI/CD) and cloud accounts, triages signals so only confirmed findings surface, pentests running apps inside a verified scope with a separate agent reproducing every finding, reviews pull requests with a merge-blocking status check, and opens fix pull requests that run your tests but never merge themselves. · Amnify security agents (agent-driven code audit, AI pentesting, PR review and autofix pull requests) pair comparison
- Covasant TPRM (agentic third-party risk management) — Third-party risk product from Hyderabad-headquartered Covasant. Purpose-built AI agents onboard vendors through due-diligence workflows, chase vendors who are slow to respond, keep watching news, sanctions and financial data, and, when risk thresholds break, open remediation workflows, track vendor responses, escalate unresolved issues and produce DORA, SOX and NIST reporting packages.
- noze CyberAgent (AI agent for continuous attack-surface monitoring, automated validation pentesting and NIS2 evidence) — Italian agent for mid-sized companies and NIS2 entities without an in-house SOC: after verifying domain control it continuously discovers assets and assesses network, web apps and APIs, correlates findings with EPSS and CISA KEV, confirms exploitability with automated validation pentests, ranks risks by business impact and prepares NIS2, DORA and ISO 27001 reports; the team decides what to fix.
Use-case comparisons
- AI code security agents — 33 listings (Application security scanning, suggested or automated code fixes, and pull-request security review)
- Agentic pentesting AI agents — 33 listings (Autonomous or AI-assisted penetration testing, attack-surface testing and exploitable-path verification)
Related
- Contrast AI SmartFix (agentic vulnerability remediation) alternatives
- Nullify autonomous product-security agents (find-to-fix with merge-ready PRs and AI Pentest Agent) alternatives
- Best code security AI agents
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