Software advice
Best AI API Security Software in 2026
AI API security software finds the APIs a company runs, tests them for flaws such as broken object authorization, and in some products watches live traffic for abuse. The AI part usually means agents that plan attacks, models that learn normal behavior, or coverage of LLM and MCP endpoints. It is not a web application firewall, and it is not an API gateway, although it can sit next to both.
Quick answer
APIsec ranks first because it prints per-endpoint prices and offers a free plan. StackHawk fits developer teams that want a per-user price and a stated SOC 2 Type II audit. Levo fits buyers who need a hybrid or air-gapped deployment and a no-training statement.
A security lead picking an API security tool has to decide between testing before release and watching traffic in production, and then between a self-serve tool and a platform sold through sales. Vendors now add agents, LLM testing and MCP coverage to their pages, but few print what it costs, where the data goes or how the AI works. This ranking weighs what a buyer can verify without a sales call: printed prices, free access, stated certifications, deployment options and the clarity of each AI claim. It does not measure detection rates, which only your own APIs can show. Where a vendor stated nothing, the entry says so.
The 10 best AI API security software in 2026, ranked
There is no score. Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. How we rank.
| # | Tool | Best for | Free plan | Entry price |
|---|---|---|---|---|
| 1 | APIsec | Teams with a known endpoint count that want published per-endpoint pricing | Yes | $690 per month per 100 endpoints (Standard) |
| 2 | StackHawk | Developer teams that want API tests inside AI coding agents and CI at a per-user price | Trial | $10 per user per month (Wingman) |
| 3 | Levo | Enterprises that need runtime API and AI visibility in hybrid or air-gapped environments | No | Quoted |
| 4 | Equixly | Security teams that want continuous autonomous API pentesting with proof of exploit | No | Quoted |
| 5 | Pynt | Teams that want API tests built from live traffic and run in CI | Trial | Quoted |
| 6 | Escape | Engineering-led teams that want AI pentesting and DAST connected through API and CLI | No | Quoted |
| 7 | Salt Security | Large enterprises with gateways, WAFs and a SOC that want agentless discovery first | No | Quoted |
| 8 | Cequence | Enterprises that combine API security with bot management and an AI gateway | No | Quoted |
| 9 | Akto | Security teams that need to find and govern AI agents and MCP servers | No | Quoted |
| 10 | Data Theorem | Security teams that want API discovery, attacker-style testing and runtime protection from one vendor | No | Quoted |
- 1
APIsec ranks first because a buyer can see the free plan, the Standard and Pro rates per 100 endpoints and the yearly prices without a call. Its privacy policy states 365 days of retention after termination. The AI claims on the page, such as AI DAST and AI-BOM, come without detail, and no certification is named, so verification stops at price and retention.
Strong on
- Free forever plan, then $690 and $2,750 a month per 100 endpoints
- Hosted agent for private APIs on every plan, on-prem on a custom plan
- Policy states retention of up to 365 days after account termination
Weak on
- AI DAST and AI-BOM are listed without a description
- No security certification is named on the pricing page
Skip it if: Buyers who need runtime blocking or published SOC 2 or ISO evidence from the pricing page. Free tests public APIs; Standard and Pro are priced per 100 endpoints; Bug Bounty is custom.
- 2
StackHawk ranks second because it prints a per-user price, offers a 14-day trial with no card and states an annual SOC 2 Type II audit with AWS hosting. Its newer pitch is testing and fixing vulnerabilities inside AI coding agents. The trade-off is scope: it is a pre-release tester, so it does not discover unknown production APIs.
Strong on
- Wingman costs $10 per user a month with unlimited apps
- SOC 2 Type II audit yearly, report available on request
- Skills for Claude Code, Cursor, Codex and GitHub Copilot
Weak on
- Scale pricing is not published on the page
- Tests running apps, so shadow APIs in production go unseen
Skip it if: Security teams that need live traffic discovery or runtime blocking. Wingman includes unlimited apps and 50 scans per user monthly; Scale is quoted.
- 3
Levo ranks third because its privacy policy states that customer data does not train AI models and that payload-level data is avoided where possible, and its pricing page lists SaaS, on-prem, hybrid and air-gapped options. It prints no price and states no region. The feature list is broad, so confirm which modules a quote includes.
Strong on
- Policy states customer data is not used to train AI models
- Deployment as SaaS, on-prem, hybrid, air-gapped or private cluster
- eBPF-based runtime discovery of APIs, agents, MCP servers and LLMs
Weak on
- No price, tier or hosting region is printed on the page
- Feature breadth makes scope hard to read before a demo
Skip it if: Small teams that want a self-serve price and a trial. Per-endpoint pricing with no figure on the pricing page; a custom quote is required.
- 4
Equixly ranks fourth because it explains its AI design in the most detail: four cooperating agents, a gate that reports only reproduced findings and its own models rather than third-party ones. ISO 27001 and SOC 2 badges and a regulated EU residency claim appear on the site. No price is shown, and the residency claim carries no region.
Strong on
- Four agents are named: Discovery, Attacker, Evaluator and Orchestrator
- Reports only findings that the Evaluator agent reproduced in testing
- ISO 27001 and SOC 2 badges plus a stated EU data residency claim
Weak on
- Pricing is shown only by quote through a form
- Hosting provider and region are not named on the site
Skip it if: Teams that want to start a test today without a sales conversation. Quote only; the page says cost scales with what you test, with no per-test charge.
- 5
Pynt ranks fifth because its integration list is concrete (Postman, Burp, Kong, GitHub Actions, Jenkins, Jira) and its privacy policy describes encryption, retention and EU transfer safeguards. It adds LLM discovery and an MCP runtime firewall. No plan, price or certification is named, and its customer counts differ between sections of the same page. It suits CI-first teams.
Strong on
- Named integrations across Postman, Burp, gateways and CI tools
- LLM Security Testing against the OWASP LLM Top 10
- Policy cites SCCs and a DPO contact for requests
Weak on
- No tiers or limits for the free start
- Customer counts conflict, 500 and 2000 brands on one page
Skip it if: Buyers who need a published price list or a named SOC 2 report. A Start Free button exists but the page states no tiers, limits or prices.
- 6
Escape ranks sixth because it is a real French company with a registered address in Biarritz and a public API, CLI and MCP server, but the pricing page lists modules without a price, a free trial or hosting detail. Its customer claims, such as 2,000 security teams, are vendor figures. It suits teams that will run a demo.
Strong on
- Public API, CLI and MCP server, with Wiz, Cursor and Claude Code integrations
- Products span AI pentesting, DAST, external network testing and ASM
- Compliance reports map to PCI DSS, HIPAA, SOC 2 and ISO 27001
Weak on
- No price, trial or hosting information on the pricing page
- Customer results on the home page are self-reported
Skip it if: Buyers who want a fixed price before a sales call. The pricing page asks buyers to talk to the team; no figure or free tier is shown.
- 7
Salt Security ranks seventh because its site gives clear module names, over 40 named integrations and a free assessment, while its pages print no price or certification. The policy says data may be stored in the United States, Israel and the EU, and lists AI services among providers. It fits large estates that already run the integrated tools.
Strong on
- Agentless discovery of agents, MCP servers and APIs, including shadow and zombie APIs
- Named integrations with AWS, Azure, Cloudflare, Kong, CrowdStrike and Wiz
- Free Agentic Security Assessment of the attack surface
Weak on
- No price or certification printed on the home page
- Privacy policy leaves its hosting and cloud providers unnamed
Skip it if: Small teams that need a published price and a self-serve start. Discovery, posture and runtime modules have no printed price; a free attack surface assessment exists.
- 8
Cequence ranks eighth because its page lists the products clearly (AI Gateway, API Security, Bot Management, WAAP) and an address in Santa Clara, but no price, certification or deployment model appears. Its figures, such as 10 billion daily interactions, are vendor claims. It suits teams that want one vendor for bots and APIs. It suits bot-heavy estates.
Strong on
- API security, bot management and WAAP on one platform
- AI Gateway with OAuth 2.1 agent authentication and per-tool rate limits
- Solution pages for PCI DSS and the EU AI Act
Weak on
- No pricing, certification or deployment model on the home page
- Headline results on the page are vendor-reported figures only
Skip it if: Buyers who want a developer-led test tool with a published price. No pricing shown; the only calls to action are a demo and a get-started button.
- 9
Akto ranks last because its current pages center on AI agents, MCP servers and guardrails rather than classic API testing, and print no price, certification or HQ label. The detail on MCP attacks, 30 plus guardrails and audit trails is specific. Its two product lines, Atlas and Argus, split employee-side and homegrown-app coverage. It suits agent-first teams.
Strong on
- Discovers agents, CLI assistants and MCP servers across endpoints
- 30 plus guardrails for PII, secrets and source code in prompts
- Audit trails of prompts, responses and skill calls
Weak on
- No price, free plan or certification on the pages we read
- The address is shown but not labeled as headquarters
Skip it if: Teams that mainly need classic REST API testing in CI. Usage-based enterprise pricing; two product lines, Atlas and Argus, link to sales.
- 10
Data Theorem sits last because the pages we read leave the most open: no price, no certification, no hosting region and no named integrations, and the API Secure product page returned a 404. Its homepage does describe a three-part flow of discovering APIs, testing them like an attacker and protecting them at runtime, plus AI Exploits and AI Auto-Remediation. Ask for the missing items before a demo.
Strong on
- Homepage covers API discovery, attacker-style testing and runtime protection in one product, API Secure
- Names AI Exploits, AI Auto-Remediation and AI Active Protection as separate AI features
- Privacy policy says customer information is not used to train third-party AI models
Weak on
- No price, plan tier or free plan appears on the pricing page
- Certifications, hosting region and integrations are not stated on the pages read
Skip it if: Buyers who need a published price, a named certification or a documented integration list before talking to sales. The pricing page shows no prices, tiers or free plan, only a demo request.
How these AI API security software were judged
How good is AI at finding API vulnerabilities?
No vendor page shows an independent detection rate, so read what each AI actually does. Equixly describes four cooperating agents that discover endpoints, attack, judge success and carry context, and reports only findings it reproduced. Escape describes agents that discover, test and remediate. Salt and Cequence stress behavior analysis of agents and traffic. APIsec lists AI DAST and AI-BOM without detail. Treat percentages on vendor pages as marketing and run a trial against an API with known flaws to count what each tool finds and misses.
What does API security software cost?
Only a few vendors publish a price, and the units differ. As of November 2026, APIsec lists Standard at $690 a month per 100 endpoints and Pro at $2,750, with a free plan. StackHawk lists Wingman at $10 per user a month with 50 scans per user. Levo prices per endpoint but prints no figure. Equixly, Escape, Pynt, Salt, Cequence and Akto name no price on the pages we read. Multiply published rates by your endpoint count before comparing against a quote.
Where does your API traffic and scan data go?
API security tools see requests, tokens and sometimes payloads, so data handling is a real selection criterion. Levo's privacy policy says it avoids processing payload-level data where possible and that customer data is not used to train AI models. StackHawk states AWS hosting, AES-256 at rest and TLS 1.2 or higher in transit. Pynt names storage in the EU, the US and other regions, and Equixly claims regulated EU data residency. Most other pages were silent on model training, so the vendor's policy was not checked for this beyond the points above.
How hard is it to move off an API security tool?
Switching a scanner is simple, switching a runtime sensor is not. Test-based tools such as StackHawk and Pynt run from a CLI or a CI step, so removal means deleting a pipeline stage and exporting findings. Sensors that attach to Kubernetes, gateways or eBPF, as Levo and Salt describe, take more work to remove and to replace. Per-endpoint pricing at APIsec and Levo also ties cost to inventory size. Ask for a findings export in an open format and a termination clause that covers deletion.
Which API security tool fits your team?
Start from who fixes the issues. A small engineering team with CI fits StackHawk or APIsec. A security team that wants autonomous pentesting fits Equixly or Escape. A large estate with many gateways fits Levo, Salt or Cequence, each of which connects to existing infrastructure. A company that wants to govern AI agents and MCP servers should look at Akto, then at the agent modules of the runtime vendors. Match deployment too: Levo lists on-prem, hybrid and air-gapped options, and APIsec lists on-prem on a custom plan.
How to choose an AI API security platform in three steps
- Test against an API with known flaws. Build or borrow a staging API that contains a few flaws you already know, such as an object that any user can read by changing an ID and an endpoint with no authentication. Run each trial against it and record what is found, what is missed and how many false findings appear. APIsec and StackHawk offer self-serve starts, and Escape, Equixly and Levo offer demos. A tool that reports only exploitable findings should show proof for each one, so ask for the request and response.
- Decide between pre-release and runtime coverage. Pre-release testing finds flaws in the build you control, and runtime tools find shadow and zombie APIs that nobody listed. Pynt and Levo state discovery from live traffic, Salt describes agentless discovery, and StackHawk tests a running app in CI. Write down which gap hurts more today: unknown APIs or untested known ones. Buying both from one vendor is convenient but widens the contract, so check whether modules can be bought separately. Ask each vendor to list what it covers.
- Get deployment and data terms in writing. Ask where the sensor or agent runs, which data leaves your network, how long findings are kept and whether any of it trains a model. Levo states a no-training position in its policy, and APIsec states 365 days of retention after termination. Request the SOC 2 or ISO report where a badge is shown, since StackHawk makes its SOC 2 Type II report available on request. Put the answers in the order form or the data processing addendum. Keep copies of both.
Frequently asked questions
What is the best AI API security software in 2026?
APIsec ranks first here because it prints per-endpoint prices, offers a free plan and states 365 days of retention after termination. StackHawk is the better fit for developer teams and Levo for buyers who need hybrid or air-gapped deployment. The right choice depends on whether you test before release or watch production.
What is the difference between API security and a web application firewall?
A web application firewall filters requests against rules at the edge. API security tools inventory your endpoints, test business logic such as authorization, and in some products learn normal traffic. They overlap in runtime blocking, which is why Levo and Salt connect to gateways and WAFs. Most teams use both.
Can AI replace a manual API penetration test?
Partly. Equixly and Escape sell autonomous testing that runs continuously and reports proven exploits, which covers repeatable checks well. A human tester still adds judgment on unusual business logic and scope. Many teams use the AI tools between yearly manual tests and keep the manual test for compliance evidence.
How is API security software priced?
By endpoint, by user or by quote. APIsec charges $690 a month per 100 endpoints on Standard, StackHawk charges $10 per user a month on Wingman, and Levo prices per endpoint with no printed figure. Enterprise tiers are quote-only. Count your endpoints first, because that number drives most bills.
Do I need a tool that covers MCP servers and LLM endpoints?
Only if you run them. Pynt lists LLM discovery and an MCP runtime firewall, Akto centers on agents and MCP servers, and Salt, Levo and Cequence add agent modules. If your APIs are conventional REST or GraphQL services, a testing tool without AI-agent coverage may be enough today.
Does the vendor train AI on my API data?
Levo's privacy policy states customer data is not used to train AI models. The other pages we read did not address it, so the vendor's policy was not checked for this. Ask each vendor in writing, and keep the answer next to the data processing agreement.
Which tools offer a free plan or trial?
APIsec has a free plan that tests public APIs, StackHawk offers a 14-day trial with no credit card, and Pynt shows a Start Free button without terms. Salt offers a free assessment of attack surface. The others use demos. Free tiers rarely include CI integrations or private API testing.
Can I run API security software on premises?
Some vendors can. Levo lists SaaS, on-prem, hybrid, air-gapped and private cluster options. APIsec lists on-premises deployment on a custom plan and a hosted agent for private APIs on every plan. Akto's page title mentions cloud and self-hosted options. Check what features differ in each mode.