# Tool Plaza > Browser-based utility tools with programmatic agent APIs (A2A + REST). ## Agent APIs - Agent card: https://toolplaza.app/.well-known/agent-card.json - A2A JSON-RPC: POST https://toolplaza.app/api/a2a (discovery: GET https://toolplaza.app/api/a2a) - REST execute: POST https://toolplaza.app/api/helpers/execute (discovery: GET https://toolplaza.app/api/helpers/execute) - Per-skill schema: GET https://toolplaza.app/api/helpers/{skillId} - Skill search: GET https://toolplaza.app/api/a2a/skills?q= - Skill resolve: GET https://toolplaza.app/api/a2a/resolve?q= - Developer guide: https://toolplaza.app/en/developers/agents - REST helper index: https://toolplaza.app/en/developers/helpers - New tools: https://toolplaza.app/en/tools/new ## Privacy Server-side agent API calls log aggregate usage (skillId, outcome) via Google Analytics. Request arguments and payloads are not logged. ## Catalog Browse tools: https://toolplaza.app/en/tools