Supported harnesses

Ennodia coordinates local agents through thin adapters. Each harness uses a local command-line interface (CLI). Use ennodia_list_harnesses to see what is installed and runnable on the current machine.

Adapter IDs

ID	Tool	Notes
claude-code	Claude Code	Runs through claude -p without permission-bypass flags.
codex	Codex CLI	Runs through codex exec. Ennodia tasks use read-only sandboxing by default.
opencode	OpenCode	Runs through opencode run.
kilo	Kilo Code	Uses the supported Kilo CLI surface when available.
kiro	Kiro CLI	Uses the supported Kiro CLI surface when available.
cline	Cline CLI	Ennodia reports it as unavailable when the local CLI cannot run non-interactively.
hermes-agent	Hermes Agent	Uses the supported Hermes Agent CLI surface when available.
antigravity	Antigravity	Runs through agy and supports browser-oriented review tasks.

First check

{
  "tool": "ennodia_list_harnesses",
  "arguments": {
    "refresh": true
  }
}

The response reports availability, runnable state, command path, version, capabilities, adapter notes, and optional inputGuidance.

inputGuidance is a bounded string[] of adapter observations and input advice. It does not guarantee media support, authentication, or access to a requested model. Plan Advisor receives this guidance in its harness inventory.

Discovery checks installed commands, not active authentication or model access. A stalled version probe stops at its deadline and adds an adapter note. Use a small real task to check the selected agent before sending larger work.

Media inputs

Ennodia sends a text prompt through the selected CLI. Include local file paths and requested ranges in that prompt. The harness must read those files through its available tools and normal permissions. Model application programming interface (API) capabilities do not establish support through a harness’s input transport or file tools. Run a small native-media probe before a larger review or comparison.

Record the files, ranges, model, tool results, errors, and task IDs. For audio comparisons, match excerpts, playback level, and reference material across candidates. Native audio findings need evidence of successful media ingestion and observations tied to the requested excerpt. Transcription, digital signal processing (DSP), and text-only judging provide distinct evidence. Label each method explicitly.

Claude Code models

Claude Code model aliases can change. When exact model selection matters, pass the full model ID, such as claude-sonnet-5 or claude-fable-5, rather than an alias like sonnet or fable.

Ennodia passes its execution notice through --append-system-prompt, so workers read it as their session’s limits.

Do not add permission-bypass flags by default.

Codex

Codex runs through the supported Codex CLI. Ennodia-launched Codex tasks default to read-only sandboxing.

When exact effort matters, verify it in the Codex run output or local Codex profile. Ennodia passes the requested model through the model field.

OpenCode

OpenCode model IDs use the provider/model format reported by opencode models, such as opencode-go/kimi-k2.7-code.

OpenCode runs that start at the same moment can fail with database is locked. Ennodia restarts those starts automatically. A task that still fails reports the conflict as its likely cause.

Antigravity

An explicit jetski: no output produced error is treated as a failed task even if the command exits with code zero. Check the requested tool access in normal Antigravity settings. A denied read does not measure the model or skill’s quality.

Ennodia uses agy --print with a text prompt containing local paths. Antigravity’s documented stream input accepts text blocks only. It rejects media blocks. Use native view_file inspection when the selected harness and model expose it. Check the tool result before claiming native audio, image, video, or document inspection. See headless input and the CLI changelog.

A September 10, 2026 probe used agy 1.2.0 with Gemini 3.8 Flash Medium:

• An eight-second MP3 native probe succeeded.
• FLAC sent as audio/x-flac was rejected.
• One comparison with four WAV samples timed out. This outcome leaves WAV support unresolved.

These observations apply to that run configuration. They do not define a universal format blacklist. The CLI changelog records audio attachment support and media-type normalization fixes. Gemini API audio support uses a separate interface. Its format list does not guarantee view_file compatibility.

Antigravity can fail setup when the agy CLI is not on PATH. Tell the user or primary agent to verify:

command -v agy
agy --version
agy models

If the shell cannot find agy at all, open Antigravity and use its supported CLI install or shell-integration flow first. Then restart the Model Context Protocol (MCP) client and call ennodia_list_harnesses again.