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Classifier Dev: Zero-shot text classification over plain HTTP — no API key, no account. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Classifier Dev. This is an automatic list. We have not written a researched verdict for Classifier Dev yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Local-first, governed AI agent runtime for Python — embed it in your app, or run it as a CLI or ACP server.
Agentao is an embeddable agent runtime for Python. A developer imports it into an application and gets a stateful, tool using assistant running in process, and the same runtime can also run as a command line tool or as an Agent Client Protocol server, so hosts written in other languages can drive it without reimplement...
The open-source TypeScript SDK for running AI coding agents in sandboxes.
AgentBox is an open source TypeScript SDK from Twill for running AI coding agents inside sandboxes through one unified API. Instead of calling an agent command line tool in non interactive mode, it launches each agent as a server process inside the sandbox and talks to it over WebSocket or HTTP, which preserves approva...
Security toolkit for AI agents.
AgentSeal is a security scanner for AI agents that red teams system prompts, audits Model Context Protocol servers and inspects skill and instruction files from a single command line tool. It installs from PyPI or npm and runs four core commands: scan, which fires an adversarial probe suite at a prompt; guard, which au...
Mock everything your AI app talks to — LLM APIs, MCP, A2A, AG-UI, vector DBs, search.
aimock, from the CopilotKit team, is a deterministic mock server for testing AI applications. It stands in for the services an AI app talks to, returning fixed responses defined in JSON fixtures, so tests run the same way every time in CI without API keys, network flakiness or model costs. It is built for developers w...
The CLI for the Claude API
The Anthropic CLI, invoked as ant, is Anthropic's official command line tool for the Claude API. Every API resource is exposed as a subcommand, so developers can send Messages requests, manage resources and connect to Managed Agents sessions directly from a terminal, with formatted output, response filtering and input ...
Talk with your AWS using Claude.
AWS MCP is an open source Model Context Protocol server that lets an AI assistant such as Claude query and manage an Amazon Web Services account in plain language. Once connected, a user can ask for things like a list of EC2 instances, S3 buckets with their sizes, Lambda functions deployed in a given region, or ECS clu...