Alternatives to Alter

Self-hosted AI agent governance with an access map, Cedar policy enforcement and a signed audit ledger for Claude Code, Codex, Gemini CLI

agentsh enforces syscall-level policy for AI coding agents — file, network, and process control that holds no matter what the prompt says.

ElevenAgents Guardrails puts real-time safety checks on ElevenLabs voice agents — prompt-injection blocking, reply screening, and custom policy enforcement

Traccia is an AI agent control plane that traces, costs, evaluates and enforces policy on agents you already run.

Arcade AI is the MCP authorization runtime that governs, executes, and audits every action your AI agents take.

Identity control plane that brokers short-lived, policy-scoped credentials for AI agents, MCP servers, and non-human workloads.

Kontext is runtime authorization for AI agents — it hooks every Claude Code, Codex, and Cowork tool call before it runs, with no gateway in

Task-level authorization for AI agents: approve the purpose once, every tool call is scoped to it.

Sponsio compiles plain-English agent policies into deterministic LTL contracts enforced at every tool call in under 0.01ms with zero LLM calls in the hot path.

Enterprise AI security platform that discovers agents and MCP servers, red-teams them, and enforces policy inline at the gateway.

Pre-execution action authorization for AI agents — a deterministic, signed gate on every tool call before it runs.

AI governance platform that discovers shadow AI, tests models and agents, and enforces policy at runtime with Guardian Agents.

Vorlon enforces AI agent runtime security — blocking policy-violating agent actions, masking sensitive data in transit, and restricting write access at the

Runtime authorization for AI agents — allow, deny, redact, or hold every action before it executes

Cycles is runtime authority for AI agents: it denies overspending tool calls before they execute, self-hosted under Apache 2.0.

Contextual security guardrails that inspect and block risky tool calls from AI agents and MCP servers.

Unbound is an Agent Access Security Broker that governs what AI coding agents can run, reach, and touch across your org.

Clarm Atlas builds governed AI coworkers from pre-approved blocks — with citations and an audit trail on every action.

Self-hosted AI gateway that signs and commits verifiable evidence for every LLM call before the response is released.

Plurai turns a plain-language policy into sub-100ms SLM evals and guardrails for AI agents.

Rogue by Qualifire red teams AI agents and enforces real-time LLM guardrails with purpose-built SLM judges.

CTGT constrains any LLM to your written policy at inference time, with deterministic policy graphs and an attestable audit trail.

Agent enablement platform that versions, scans and evaluates the skills your coding agents run.

Agentic law platform that encodes legal rules into verifiable AI agents for banks, asset managers, and insurers.

Runtime security layer that inspects what goes into your AI agents and controls what comes out

Open-source CLI that red-teams AI agent prompts and audits MCP servers with real attack payloads.

Exogram is a permanent AI memory vault that gives ChatGPT, Claude and Gemini one shared, encrypted context graph.

Fail-closed human approval layer that freezes high-risk AI agent actions at the hook seam and records a signed audit trail.

Salt Security maps the full agentic path — AI agents, MCP servers, and APIs — so you know what they can reach.

Open-source credential broker and MITM proxy that keeps real API keys out of AI agents by substituting dummy tokens in transit.