Preflight Python Packages

chain-signer

Security suite for AI agents — catch the dangerous thing before signing: preflight EVM transactions for drains, inspect EIP-712 signatures for permit-phishing, and gate agent actions by policy. Pairs with any wallet/MCP stack; non-custodial wallet included.

agentbill-sdk

Spend control & billing for AI agents. Prevent API bill shock with 3 lines of code. Supports OpenAI, Claude & MCP.

agentbill-mcp

Spend control & billing for AI agents. Prevent API bill shock with 3 lines of code. Supports OpenAI, Claude & MCP.

little-canary

Sacrificial LLM instances as behavioral probes for prompt injection detection

blackwall-hermes-plugin

BLACK_WALL pre-action guardrail for Hermes Agent (NousResearch). Hooks pre_tool_call to call forecast() before any tool runs; blocks STOP verdicts; auto-reports outcomes via observe(). Decision receipts are Ed25519-signed and verifiable offline.

blackwall-sdk

Python client for BLACK_WALL — pre-action risk gate for AI agents. Call forecast() before any irreversible action; observe() to close the loop. Zero dependencies; stdlib-only.

envguard-tool

macOS-first Python environment orchestration framework — preflight validation, dependency resolution, lock files, and safe managed execution.

policynim

A policy-aware NVIDIA NIM engineering preflight layer for AI coding agents.