Nullify vs. Claude Code

Claude Code can scan a branch and draft a patch when someone asks it to. Nullify runs your product-security program end to end, from proven findings to fixes that get merged. Here's where building it yourself on Claude Code stops and Nullify takes over.

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Last updated: 2026-11-06 · Based on Claude Code's public documentation

Always on, not on requestEvery commit and pull request, without anyone opening a session.

Proof before it reaches youFindings validated on reachability, exploitability and business context.

Fixes managed to mergeValidated against your build, then followed through review and CI.

A program, not a promptOwners routed, SLAs escalated, MTTR reported.

Build it yourself or buy it

How Nullify and Claude Code compare for security

14 capabilities, grouped by what a security program needs: finding risk, fixing and closing it, and running it week after week.

Capability

Finding risk

Code vulnerability scanning

✓

Multi-agent scans on requestThe Claude Security plugin maps your architecture, builds a threat model and hunts for vulnerabilities in a repo or diff when you run /claude-security.

✓

Every commit and pull requestAI-native SAST across 16 languages traces untrusted input through real code paths, including business-logic flaws such as IDOR.

Finding validation

–

Independent verifier agentsSeparate agents review each finding before it's reported. Anthropic notes scans are nondeterministic, so two scans of the same code can surface different findings.

✓

Reproducible exploit proofAPI findings are exploited live with request/response evidence, screenshots and video; code findings are validated on reachability, exploitability and business context.

Secrets detection

Not documentedNo live credential verification is described in the security tooling docs.

✓

Live credential verificationTests candidate secrets against AWS, GCP, Azure, GitHub, GitLab, Stripe and Slack, with a suspected owner and rotation guidance.

Cloud security

Not documentedThe security tooling scans repositories, not cloud accounts.

✓

AWS, GCP, Azure and Kubernetes auditsEvent-driven, mapped to CIS, PCI-DSS, HIPAA and SOC 2, and traced back to the repo that created each resource.

API pentesting

Not documentedNo continuous testing of running APIs is described.

✓

Continuous AI pentestsMulti-stage exploitation of REST and GraphQL APIs, with each exploit re-reviewed before it's reported; frontends via Bug Hunts.

Fixing and closing risk

Fix generation

✓

Independently reviewed patchesEach patch is checked by a second agent against your tests, then written to a patches/ folder.

✓

Fix PRs validated against your buildA minimal root-cause fix is checked against builds and tests before the pull request opens.

Getting fixes merged

Up to youPatches are never applied automatically: you apply each one, or ask Claude to open the PR, and see it through review.

✓

Managed through reviewNullify reads CI output and fixes failures, with at most 3 open fix PRs per repo so reviewers aren't buried.

Ownership and routing

Not documentedFindings land in a report directory in your repo; assigning them is a manual step.

✓

Routed to the right ownerCommit author, then CODEOWNERS, then team, with assignment that accounts for each person's open PRs and tickets.

SLA tracking and escalation

Not documentedNo SLA tracking or escalation is described.

✓

Escalated before the SLA slipsStalled security PRs and tickets are escalated in Slack with the risk and SLA stated.

Program reporting

–

A report per scanMarkdown, JSONL and SARIF files for each scan, tied to the commit it covered.

✓

MTTR and SLA compliancePlus campaign progress, per-team progress and current finding counts across one prioritized backlog.

Running it

When it runs

◷

On demand, in a sessionA scan needs Claude Code left open until it finishes. Anthropic's hosted, monitored option is a separate Enterprise product.

◷

ContinuouslyScans every default-branch commit and pull request; cloud audits run when your environment changes.

Source control

◇

Any local git repositoryThe plugin works on your checkout; change scans and patches need git.

◇

GitHub, GitLab, Bitbucket or Azure DevOpsA dedicated enterprise tenant with scoped, least-privilege access.

Cost model

Your token usageEach scan counts toward your Claude plan or API usage, and Anthropic notes a scan may use a significant number of tokens.

Outcome-basedPriced against the security work Nullify performs, not per seat or per token.

Who runs it

◎

Your teamSomeone has to run scans, triage reports, apply patches and chase every PR to merge.

◎

NullifyYour team sets the guardrails and approves every merge.

✓Supported –Limited or partial ×Not offered or not documented

4 areas where Nullify goes further than Claude Code

It runs without anyone asking

Nullify

Nullify scans every default-branch commit and every pull request, audits your cloud when it changes, and pentests your APIs continuously.

Claude Code

The Claude Security plugin scans when someone runs /claude-security, and Claude Code has to stay open until the scan completes.

Proof before it reaches your team

Nullify

API findings are exploited live with request/response evidence, screenshots and video. Code findings are validated on reachability, exploitability and business context, so only real risk makes the list.

Claude Code

Verifier agents review each finding by reading the code. Scans are nondeterministic, so Anthropic recommends running them regularly and at higher effort to catch more.

Fixes that get merged

Nullify

Fixes are validated against your build and tests before the PR opens. If CI fails, Nullify reads the logs and fixes it, with no more than 3 open fix PRs per repo.

Claude Code

Reviewed patches are written to a folder. Someone applies each one, opens its pull request and follows it through review.

A program that reaches closure

Nullify

One prioritized backlog scored 0–100, campaigns toward a target, owners routed by CODEOWNERS and capacity, Slack escalation before the SLA slips, and MTTR reporting.

Claude Code

Each scan produces a report. Routing, tracking, SLAs and reporting are whatever your team builds around it.

Use both

Your developers keep their coding agent while Nullify runs the security program

Keep Claude Code for writing software

Your developers keep using Claude Code to write and review code, and its in-session security guidance still catches common mistakes as they work.

Let Nullify close the last mile

Nullify proves what's real, writes fixes validated against your build, routes each one to an owner with time to review it, and escalates before the SLA slips. Your team approves every merge.

FAQ

Questions teams ask before building their own security harness

Can't we build this ourselves on Claude Code?

You can get a long way: the Claude Security plugin finds issues and drafts reviewed patches on demand. The hard part is everything after the report: running it continuously, proving findings, routing each fix to an owner, getting PRs merged and reporting MTTR against your SLAs. Nullify does that work, so your engineers don't maintain a harness.

Does Nullify replace Claude Code?

No. Developers keep using Claude Code to write software. Nullify runs the security program alongside it, from detection through to merge-ready fixes.

Does Nullify merge fixes automatically?

No. Nullify is automated through merge readiness and human-controlled at merge. Your team approves every merge.

How does pricing compare?

Claude Code security scans count toward your Claude plan or API token usage. Nullify is outcome-based, priced against the security work it performs rather than per seat or per token.

Reduce your vulnerability backlog and lower your MTTR

The AI harness that finds, proves and fixes vulnerabilities across your codebase. Watch Nullify find, prove and fix a vulnerability in your own stack.

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Sources. Claude Code details on this page come from its maker's own documentation, checked on 2026-11-06. Features and pricing change, so confirm current terms with the vendor.