npm · PyPI94Exceptionalhealth index

NVIDIA/SkillSpectorSecurity scanner for AI agent skills. Detect vulnerabilities, malicious patterns, security risks, prompt injection, data exfiltration, and supply-chain risks in Claude Code, Codex, and MCP skills before you install them.
Python★ 17.8KSep 19, 2026
npm94Exceptionalhealth index

arcjet/arcjet-jsRuntime security for AI apps and agents: prompt injection detection, tool-call authorization, sensitive-data redaction, bot protection, and rate limiting. Drop it into your JS/TS code.
TypeScript★ 682↓ 2.2M/moSep 11, 2026
crates.io94Exceptionalhealth index

nolabs-ai/nonosecure multiplexed execution paths for agents - zero trust, zero setup, zero latency.
Rust★ 4,037↓ 118.6K/moSep 11, 2026
Go93Exceptionalhealth index

Mindburn-Labs/helm-ai-kernelFail-closed execution firewall for AI agents: quarantine MCP tools, proxy OpenAI-compatible requests, emit signed receipts, and verify EvidencePacks offline.
Go★ 55Sep 10, 2026
PyPI · crates.io · npm93Exceptionalhealth index

hashgraph-online/hol-guardOpen-source antivirus for AI agents: block risky tools, secret access, prompt injection, malicious packages, MCP servers, plugins, and skills at runtime.
Python · TypeScript★ 557↓ 95.5K/moSep 5, 2026
Go · npm91Excellenthealth index

Garudex-Labs/caracal🐾 Authority, not credentials, for AI agents: policy-approved actions, delegation that can only narrow, instant revocation, tamper-evident audit.
TypeScript · Go★ 206Sep 8, 2026
PyPI · crates.io91Excellenthealth index

Rul1an/assayOpen evidence profile for MCP tool actions. Enforce configured tool-call policies and record decisions and observations in offline-verifiable bundles. Optional Linux kernel controls. No hosted backend required.
Rust · Python · Shell★ 13↓ 4,222/moOct 13, 2026
PyPI · RubyGems90Excellenthealth index
Python★ 155↓ 2,902/moAug 25, 2026
PyPI89Excellenthealth index

DataFog/datafog-pythonOffline PII firewall for AI agents and LLM apps: fast local detection and redaction, Claude Code hook, LiteLLM guardrail. Zero network calls, one dependency.
Python★ 72↓ 34K/moSep 9, 2026
npm89Excellenthealth index

node9-ai/node9-proxyThe Execution Security Layer for the Agentic Era. Providing deterministic "Sudo" governance and audit logs for autonomous AI agents.
TypeScript★ 211↓ 7,422/moSep 13, 2026
npm · PyPI · Go88Excellenthealth index
Go · TypeScript · Python★ 67↓ 3,281/moOct 9, 2026
PyPI · npm · Go88Excellenthealth index

responsibleai/agent-hooksFramework-neutral control contract for AI agents: eight interception points, three verdicts, and a conformance kit.
Rust · Python · Go★ 19↓ 31.1K/moOct 6, 2026
PyPI88Excellenthealth index

vaaraio/vaaraAccountable Autonomy: open-source evidence layer that gates every AI agent tool call against your policy and writes a hash-chained record an auditor verifies offline, without trusting you. Root-agnostic; binds to TPM 2.0 / SEV-SNP when present. Your environment, no SaaS, no telemetry. AGPL-3.0.
Python★ 15↓ 7,475/moOct 20, 2026
npm · PyPI87Excellenthealth index

Agent-Threat-Rule/agent-threat-rulesOpen detection-rule standard for AI agent security threats — like Sigma, but for AI agents. Executable rules across 10 categories; merged into Microsoft AGT, Cisco AI Defense, MISP, OWASP, FINOS & SigmaHQ. MIT-licensed.
TypeScript★ 388↓ 72.8K/moSep 9, 2026
Go · npm87Excellenthealth index

Asymptote-Labs/agent-beaconAgent Beacon is the world's first open-source telemetry layer for AI agents wherever they run: locally, in CI, in the browser, or in the cloud.
Go★ 332Sep 8, 2026
Go87Excellenthealth index

cfgaudit/cfgauditStatic security auditor for AI-agent configuration: Claude Code, MCP servers, Cursor, Codex, Copilot, Gemini CLI and more. 109 rules, SARIF output, OWASP LLM Top 10 mapping.
Go★ 8Oct 20, 2026
PyPI87Excellenthealth index

sattyamjjain/agent-airlockA type-checker and contract layer for AI agent tool calls, deny-by-default, in-process, Pydantic-only. Strict argument validation, ghost-argument stripping, and self-healing retries for MCP servers and agent frameworks.
Python★ 15↓ 3,569/moSep 18, 2026
npm86Excellenthealth index

emiliaprotocol/emilia-protocolAuthority control plane for autonomous work. EMILIA Gate enforces finite customer-owned mandates at protected executor boundaries; the open protocol keeps evidence verifiable.
TypeScript · HTML★ 649↓ 1,109/moSep 5, 2026
npm84Excellenthealth index

getlarge/themoltnetGive an agent a job, not your keys. Open-source control plane for AI agent work: each agent gets its own identity, a bounded job, and a signed record of what it did.
TypeScript · Go★ 16↓ 4,548/moSep 14, 2026
PyPI · npm83Excellenthealth index

PrismorSec/prismor Self-hosted runtime control plane for AI agents. Observe or HITL approve or Block rogue tool calls before it executes: secret leaks, prompt injection, supply chain etc in a local dashboard. Agent agnostic (Claude, codex, langchain etc.)
Python★ 343↓ 2,863/moSep 11, 2026
npm83Excellenthealth index

opena2a-org/opena2aOne scan for AI risk. `opena2a review` checks an AI project across credentials, shadow agents, MCP servers, and dependencies, returns a score, and routes each finding to the tool that fixes it. Open source.
TypeScript★ 21↓ 16.4K/moSep 28, 2026
Go83Excellenthealth index

peg/rampartOpen-source firewall for AI agents. Policy engine that audits and controls what OpenClaw, Claude Code, Cursor, Codex, and any AI tool can do on your machine.
Go★ 83Sep 6, 2026
Go83Excellenthealth index

perplexityai/numbatVisibility into AI agent activity on endpoints, with on-device detection, optional pre-action blocking, and forensic reconstruction.
Go★ 1,068Sep 20, 2026
PyPI81Excellenthealth index
Python★ 50↓ 46/moSep 20, 2026
Go81Excellenthealth index
Go★ 1Sep 14, 2026
npm81Excellenthealth index

lua-ai-global/governanceZero-dependency TypeScript SDK for AI agent governance: policy enforcement, injection detection, tamper-evident audit, and standards mapping (EU AI Act, OWASP, NIST, ISO 42001)
TypeScript★ 26↓ 18.7K/moSep 13, 2026
Go80Excellenthealth index
Go · Python★ 16Sep 13, 2026
PyPI80Excellenthealth index

pezhik/skilltotalScan AI components (MCP servers, agent skills, npm/PyPI packages) for malware & risky capabilities. Local, deterministic, evidence-anchored. Free & OSS.
Python★ 6↓ 2,906/moOct 9, 2026
npm80Excellenthealth index

thewaltero/mythos-routerThe leaked Anthropic reasoning protocol. Running locally. Zero-drift coding with Strict Write Discipline and adaptive Claude Opus 5 thinking. Mythos
TypeScript★ 299↓ 321/moSep 9, 2026
npm · PyPI78Goodhealth index

sinewaveai/agent-security-scanner-mcpSecurity scanner MCP server for AI coding agents. Prompt injection firewall, package hallucination detection (4.3M+ packages), 1000+ vulnerability rules with AST & taint analysis, auto-fix.
JavaScript · Python · TypeScript★ 122↓ 2,960/moOct 9, 2026