Top Formal Alternatives for 2026
Formal focuses on protocol-aware access control. many teams evaluate alternatives for broader agent coverage, different deployment models, or pricing that fits their scale. Here are the top competitors to consider.
Category: Agent Identity & Access • Last reviewed: 2026-07-03
What is Formal?
A protocol-aware reverse proxy that parses 15+ wire protocols — Postgres, MongoDB, Snowflake, SSH, Kubernetes, S3, and MCP — and enforces least-privilege policies inline at query level. In 2026 it positions as AI-native PAM, proxying agent access to data stores with PII masking and tool-call blocking. Backed by Thrive Capital and Y Combinator; AARM Core conformant.
GuardionAI
Agent runtime governance — EDR for AI agents. Guardion governs every agent command, tool call, and data access inline: a security gateway, runtime guardrails, DLP, and detection & incident response for AI agents.
Why it's better than Formal
sub-130ms guardrails latency • 96.3 F1 on the Prompt Security Leaderboard with 0.02% false positives • 50M+ agent actions protected per month
Permit.io
Policy-as-code platform that now includes specialized authorization for AI agents and tool calls.
Okta (AI Agent Identity)
Okta secures AI agents as first-class identities: Auth for GenAI (via Auth0) provides Token Vault, async human-in-the-loop authorization, and fine-grained RAG access, while Okta for AI Agents manages agent lifecycle. Its Cross App Access (XAA) protocol extends OAuth/OIDC so identity providers govern agent-to-app connections, with 25+ adopters including Anthropic, Atlassian, and Slack.
- Standards-based (extends OAuth/OIDC) rather than proprietary controls
- Large partner ecosystem for Cross App Access
Highflame
Agent security and AI governance platform (formerly Javelin) that issues verified agent identities, authorizes every action inline, and maps decisions to EU AI Act, NIST AI RMF, OWASP, and MITRE ATLAS. Its DeepContext multi-turn guardrail model and 150+ runtime detectors target agentic attack patterns; ZeroID identity core is open source (SPIFFE/OIDC). AARM Core conformant.
- Sub-1ms inline authorization with fast fleet-wide revocation
- Open-source ZeroID identity core on SPIFFE/OIDC standards
Frequently asked questions
What is Formal?
A protocol-aware reverse proxy that parses 15+ wire protocols — Postgres, MongoDB, Snowflake, SSH, Kubernetes, S3, and MCP — and enforces least-privilege policies inline at query level. In 2026 it positions as AI-native PAM, proxying agent access to data stores with PII masking and tool-call blocking. Backed by Thrive Capital and Y Combinator; AARM Core conformant. It is categorized under Agent Identity & Access in the Guardion AI Security Index.
How much funding has Formal raised?
Formal raised a $6M Seed (2024-11), bringing total disclosed funding to $7M.
Is Formal open source?
No, Formal is a commercial product (Enterprise (quote)).
What are the best Formal alternatives?
Teams evaluating Formal most often compare it with Permit.io, Okta (AI Agent Identity), Highflame, and GuardionAI — all listed under Agent Identity & Access.
How does Formal compare to GuardionAI?
Formal focuses on protocol-aware access control, while GuardionAI is an agent runtime governance platform ("EDR for AI agents") that governs every agent tool call inline with sub-130ms guardrails latency.