# Use Envoy in your agent

Choose your host in the authoritative [installation matrix](https://agent.envoy.money/host-installation.md#installation-matrix): [Grok](https://agent.envoy.money/grok.md), [Claude](https://agent.envoy.money/claude.md), [ChatGPT](https://agent.envoy.money/chatgpt.md), [ChatGPT Work](https://agent.envoy.money/chatgpt-work.md) or [Cursor](https://agent.envoy.money/cursor.md). An agent that can drive a browser but cannot add a remote MCP server, such as [Instinct](https://agent.envoy.money/instinct.md) or [Meta Muse](https://agent.envoy.money/muse.md), uses the [browser agent guide](https://agent.envoy.money/browser.md).

Release 0.4.15 provides [pay-with-envoy](https://agent.envoy.money/downloads/envoy-pay-with-envoy-0.4.15.zip), [check-envoy-account](https://agent.envoy.money/downloads/envoy-check-envoy-account-0.4.15.zip), the [OpenAI portable plugin](https://agent.envoy.money/downloads/envoy-payments-plugin-0.4.15.zip) and the [Claude plugin](https://agent.envoy.money/downloads/envoy-claude-plugin-0.4.15.zip). Verify [checksums](https://agent.envoy.money/downloads/SHA256SUMS); follow the guide's [upgrade instructions](https://agent.envoy.money/host-installation.md#upgrade-and-refresh).

The agent host owns the saved payment choice. Installing these files does not connect an account or set a default. The skills follow the `next` step in each Envoy tool reply; the host keeps the saved default.

## Acceptance check

Use the authoritative [installation checks](https://agent.envoy.money/host-installation.md#verify-your-installation). Test fresh-task default recall and an explicit alternative separately from account access and merchant/payment outcomes. Package publication does not update an installed skill or prove any of these host behaviors.