Skill version 2026-10-12. This is a locally installed copy and may be out of date. Once per session, fetch https://skills.opper.ai/versions.json and compare its "opper-cli" entry with 2026-10-12. If they differ, read https://skills.opper.ai/opper-cli/SKILL.md and follow that instead of this copy for the rest of the session, and tell the user once that their installed Opper skills are out of date (update with npx skills update, or git pull in a manual clone). Do not edit the installed files. If the fetch fails, continue with this copy.

Sub-skill of opper — start there for discovery and setup guidance. Source: https://github.com/opper-ai/opper-skills/blob/main/opper-cli/SKILL.md

Opper CLI

The official Opper CLI, distributed as the npm package @opperai/cli. Source: github.com/opper-ai/cli. Requires Node.js ≥ 20.12.

The CLI is more than a thin wrapper over the API. It also launches coding agents (Claude Code, OpenCode, Codex, Hermes, Pi) with their model traffic routed through Opper, installs bundled skills, and wires AI code editors to Opper.

For agent-assisted setup, platform operations, and model tests, prefer the opper-mcp skill. Connecting MCP provides Opper tools; opper launch routes the agent's own inference through Opper. The CLI also delivers application keys privately with opper keys create --project <uuid> --name <name> --output <env-file> — consult opper keys create --help and do not read or print the resulting secret.

Install