generated: '2026-09-03' method: searched source: https://dialnexa.com/docs/sdks/overview.md + https://dialnexa.com/docs/agents/testing-agents.md + https://dialnexa.com/docs/mcp-tools/quickstart.md description: >- DialNexa has no separate sandbox environment, test-mode key prefixes, or simulated telephony - testing happens against production with real (billable) calls. What the provider does publish: an interactive playground on every endpoint reference page ("Every endpoint in the reference includes a built-in playground for quick testing"), a documented agent-testing flow using phone test calls against published agent versions with country validation and dynamic variables, and explicit guidance to use a dedicated test workspace when evaluating MCP tools that change data or spend wallet balance. The MCP preview_batch_call_leads tool previews leads before a campaign is created. console: type: docs-playground url: https://dialnexa.com/docs/api-reference/introduction note: Mintlify API playground embedded in each endpoint page; runs against production with a real API key. test_mode: separate_environment: false test_key_prefixes: null test_values: null note: No published test phone numbers or fixture values; phone test calls are real calls to a validated recipient number. practices: - Use a dedicated test workspace for evaluating state-changing or billable MCP tools. - Test agents with phone test calls against published versions before assigning live routes. - Preview batch leads (MCP preview_batch_call_leads) before creating a campaign.