Enforce real-time token budgets and spending limits for OpenAI, Anthropic Claude, and Google Gemini API calls in Node.js

Countersign as MCP tools — the cross-vendor kill switch + spend guard inside any MCP client (Claude, Cursor, …).

The Agent Economy Layer — agents earn, agents spend, Guard protects. 13 skills with runtime cost cap, recursive kill, tool firewall.

Countersign SDK — the typed client agents and operators use to wire in the cross-vendor freeze, spend-guard, and live audit ledger. Browser + Node.

A metered CREDIT LEDGER: append-only transactions, balance, the ATOMIC debit-if-covers (a single conditional INSERT that can never drive the ledger negative under concurrency), the idempotent debit (INSERT OR IGNORE — the money-OUT double-spend guard for

Community toolkit for building on Arc (not affiliated with Circle/Arc) — a scaffolder + CLI + library for agentic commerce: wallets, x402 paywalls, Circle Gateway nanopayment batching, cross-chain withdrawal (CCTP), and a spend-guard safety kernel.

A pure, zero-dependency spend guard: 'given how much I've already spent in each window, may I make one more paid action?' Denial-of-wallet ceilings for email sends, LLM calls, SMS, or any paid API — bring your own counters. Runs anywhere (Cloudflare Worke

Token budgets and a kill-switch for AI coding agents — reads Claude Code/Cursor usage, prices it, and enforces daily/monthly/per-project USD limits. Read-only, zero dependencies.

Cross-script confusable detection, slug safety, and LLM Denial of Spend defence. Zero dependencies.

Cost-control guardrails for OpenAI- and Hugging Face-compatible chat calls.

A drop-in spend cap and audit log for LLM API calls

A local budget guardrail for AI agents — hard-stops your agent before its next LLM call crosses a USD ceiling. Vercel AI SDK middleware.

Used to ensure modern CLI scripts fail silently on old js versions. Useful for static analysis tools and similar

Methods for working with BIP 174 PSBTs

OCI NodeJS client for Cloud Guard Service

A Vite plugin that lets SPA applications generate a Content Security Policy (CSP).

Navigation Guard for Next.js App Router and Pages Router.

SDK for interacting with the Coinbase Developer Platform Wallet API

elizaOS plugin for AgentFeed — paid crypto liquidation data over x402 micropayments on Solana. Full-universe cascade detection across ~600 USDT perps on Bybit, OKX and Binance, plus positioning, funding, prices and token risk. $0.001–$0.05 per call in USD

Automated Test-Driven Development enforcement for Claude Code