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+---
+name: opencode
+description: Delegate coding tasks to OpenCode CLI agent for feature implementation, refactoring, PR review, and long-running autonomous sessions. Requires the opencode CLI installed and authenticated.
+version: 1.2.0
+author: Hermes Agent
+license: MIT
+metadata:
+  hermes:
+    tags: [Coding-Agent, OpenCode, Autonomous, Refactoring, Code-Review]
+    related_skills: [claude-code, codex, hermes-agent]
+---
+
+# OpenCode CLI
+
+Use [OpenCode](https://opencode.ai) as an autonomous coding worker orchestrated by Hermes terminal/process tools. OpenCode is a provider-agnostic, open-source AI coding agent with a TUI and CLI.
+
+## When to Use
+
+- User explicitly asks to use OpenCode
+- You want an external coding agent to implement/refactor/review code
+- You need long-running coding sessions with progress checks
+- You want parallel task execution in isolated workdirs/worktrees
+
+## Prerequisites
+
+- OpenCode installed: `npm i -g opencode-ai@latest` or `brew install anomalyco/tap/opencode`
+- Auth configured: `opencode auth login` or set provider env vars (OPENROUTER_API_KEY, etc.)
+- Verify: `opencode auth list` should show at least one provider
+- Git repository for code tasks (recommended)
+- `pty=true` for interactive TUI sessions
+
+## Binary Resolution (Important)
+
+Shell environments may resolve different OpenCode binaries. If behavior differs between your terminal and Hermes, check:
+
+```
+terminal(command="which -a opencode")
+terminal(command="opencode --version")
+```
+
+If needed, pin an explicit binary path:
+
+```
+terminal(command="$HOME/.opencode/bin/opencode run '...'", workdir="~/project", pty=true)
+```
+
+## One-Shot Tasks
+
+Use `opencode run` for bounded, non-interactive tasks:
+
+```
+terminal(command="opencode run 'Add retry logic to API calls and update tests'", workdir="~/project")
+```
+
+Attach context files with `-f`:
+
+```
+terminal(command="opencode run 'Review this config for security issues' -f config.yaml -f .env.example", workdir="~/project")
+```
+
+Show model thinking with `--thinking`:
+
+```
+terminal(command="opencode run 'Debug why tests fail in CI' --thinking", workdir="~/project")
+```
+
+Force a specific model:
+
+```
+terminal(command="opencode run 'Refactor auth module' --model openrouter/anthropic/claude-sonnet-4", workdir="~/project")
+```
+
+## Interactive Sessions (Background)
+
+For iterative work requiring multiple exchanges, start the TUI in background:
+
+```
+terminal(command="opencode", workdir="~/project", background=true, pty=true)
+# Returns session_id
+
+# Send a prompt
+process(action="submit", session_id="<id>", data="Implement OAuth refresh flow and add tests")
+
+# Monitor progress
+process(action="poll", session_id="<id>")
+process(action="log", session_id="<id>")
+
+# Send follow-up input
+process(action="submit", session_id="<id>", data="Now add error handling for token expiry")
+
+# Exit cleanly — Ctrl+C
+process(action="write", session_id="<id>", data="\x03")
+# Or just kill the process
+process(action="kill", session_id="<id>")
+```
+
+**Important:** Do NOT use `/exit` — it is not a valid OpenCode command and will open an agent selector dialog instead. Use Ctrl+C (`\x03`) or `process(action="kill")` to exit.
+
+### TUI Keybindings
+
+| Key | Action |
+|-----|--------|
+| `Enter` | Submit message (press twice if needed) |
+| `Tab` | Switch between agents (build/plan) |
+| `Ctrl+P` | Open command palette |
+| `Ctrl+X L` | Switch session |
+| `Ctrl+X M` | Switch model |
+| `Ctrl+X N` | New session |
+| `Ctrl+X E` | Open editor |
+| `Ctrl+C` | Exit OpenCode |
+
+### Resuming Sessions
+
+After exiting, OpenCode prints a session ID. Resume with:
+
+```
+terminal(command="opencode -c", workdir="~/project", background=true, pty=true)  # Continue last session
+terminal(command="opencode -s ses_abc123", workdir="~/project", background=true, pty=true)  # Specific session
+```
+
+## Common Flags
+
+| Flag | Use |
+|------|-----|
+| `run 'prompt'` | One-shot execution and exit |
+| `--continue` / `-c` | Continue the last OpenCode session |
+| `--session <id>` / `-s` | Continue a specific session |
+| `--agent <name>` | Choose OpenCode agent (build or plan) |
+| `--model provider/model` | Force specific model |
+| `--format json` | Machine-readable output/events |
+| `--file <path>` / `-f` | Attach file(s) to the message |
+| `--thinking` | Show model thinking blocks |
+| `--variant <level>` | Reasoning effort (high, max, minimal) |
+| `--title <name>` | Name the session |
+| `--attach <url>` | Connect to a running opencode server |
+
+## Procedure
+
+1. Verify tool readiness:
+   - `terminal(command="opencode --version")`
+   - `terminal(command="opencode auth list")`
+2. For bounded tasks, use `opencode run '...'` (no pty needed).
+3. For iterative tasks, start `opencode` with `background=true, pty=true`.
+4. Monitor long tasks with `process(action="poll"|"log")`.
+5. If OpenCode asks for input, respond via `process(action="submit", ...)`.
+6. Exit with `process(action="write", data="\x03")` or `process(action="kill")`.
+7. Summarize file changes, test results, and next steps back to user.
+
+## PR Review Workflow
+
+OpenCode has a built-in PR command:
+
+```
+terminal(command="opencode pr 42", workdir="~/project", pty=true)
+```
+
+Or review in a temporary clone for isolation:
+
+```
+terminal(command="REVIEW=$(mktemp -d) && git clone https://github.com/user/repo.git $REVIEW && cd $REVIEW && opencode run 'Review this PR vs main. Report bugs, security risks, test gaps, and style issues.' -f $(git diff origin/main --name-only | head -20 | tr '\n' ' ')", pty=true)
+```
+
+## Parallel Work Pattern
+
+Use separate workdirs/worktrees to avoid collisions:
+
+```
+terminal(command="opencode run 'Fix issue #101 and commit'", workdir="/tmp/issue-101", background=true, pty=true)
+terminal(command="opencode run 'Add parser regression tests and commit'", workdir="/tmp/issue-102", background=true, pty=true)
+process(action="list")
+```
+
+## Session & Cost Management
+
+List past sessions:
+
+```
+terminal(command="opencode session list")
+```
+
+Check token usage and costs:
+
+```
+terminal(command="opencode stats")
+terminal(command="opencode stats --days 7 --models anthropic/claude-sonnet-4")
+```
+
+## Pitfalls
+
+- Interactive `opencode` (TUI) sessions require `pty=true`. The `opencode run` command does NOT need pty.
+- `/exit` is NOT a valid command — it opens an agent selector. Use Ctrl+C to exit the TUI.
+- PATH mismatch can select the wrong OpenCode binary/model config.
+- If OpenCode appears stuck, inspect logs before killing:
+  - `process(action="log", session_id="<id>")`
+- Avoid sharing one working directory across parallel OpenCode sessions.
+- Enter may need to be pressed twice to submit in the TUI (once to finalize text, once to send).
+
+## Verification
+
+Smoke test:
+
+```
+terminal(command="opencode run 'Respond with exactly: OPENCODE_SMOKE_OK'")
+```
+
+Success criteria:
+- Output includes `OPENCODE_SMOKE_OK`
+- Command exits without provider/model errors
+- For code tasks: expected files changed and tests pass
+
+## Rules
+
+1. Prefer `opencode run` for one-shot automation — it's simpler and doesn't need pty.
+2. Use interactive background mode only when iteration is needed.
+3. Always scope OpenCode sessions to a single repo/workdir.
+4. For long tasks, provide progress updates from `process` logs.
+5. Report concrete outcomes (files changed, tests, remaining risks).
+6. Exit interactive sessions with Ctrl+C or kill, never `/exit`.