# HarnessLink for omp

omp is the harness the installer adds by default. HarnessLink captures its prompts, transcripts, todos and plans, banks every finished turn, brings memory into each session through a managed omp extension and gives the model the MCP memory tools.

## What HarnessLink captures from omp

| Feature | In omp | Details |
| --- | --- | --- |
| Prompt history | Yes | `~/.omp/agent/history.db`. |
| Session transcripts | Yes | `~/.omp/agent/sessions/<folder>/*.jsonl`, subagents included, uploaded moments after they change. |
| Memory bank (autobank) | Yes | Every finished turn becomes a memory entry, plus todo, plan and checkpoint snapshots. |
| Gateway routing | Yes | `providers.anthropic.baseUrl` and `providers.openai-codex.baseUrl` in `~/.omp/agent/models.yml`. |
| Context hooks | Yes | A managed extension, `~/.omp/agent/extensions/superpi-context.ts`, since omp has no settings-file hooks. |
| Memory tools (MCP) | Yes | `mcpServers.superpi` in `~/.omp/agent/mcp.json`. |
| Org policy rules | Yes | Checked in the extension's `tool_call` handler; "ask first" opens a confirm dialog. |
| Skills from templates | Yes | `hnl add <skill>` installs into `~/.omp/agent/skills`; agents and extensions install for omp only. |
| Resume in another harness | Yes | `hnl resume` reopens a session with `omp --resume`. |

## Set up omp

1. Install HarnessLink. The installer also installs omp (`@oh-my-pi/pi-coding-agent`) unless you pass `--no-omp`.
   ```
   curl -fsSL https://harnesslink.sh/install.sh | bash
   ```
2. Sign in once in your browser; setup then turns on what each harness on the machine supports.
   ```
   hnl cloud setup
   ```
3. Or turn the pieces on one at a time.
   ```
   hnl gateway connect omp
   hnl cloud harnesses enable omp
   hnl cloud autobank enable omp
   hnl harness context omp
   hnl mcp register --harness=omp --yes
   ```
4. Check what is connected: plain `hnl` shows, for each harness, the gateway, transcripts, autobank, context and memory tools.
   ```
   hnl
   ```

## How memory reaches omp

**At session start** the extension's `before_agent_start` handler adds your organisation's policy instructions and a brief of the project, up to 9,500 characters.

**On each prompt** it adds up to 3 memory entries that share at least two distinctive words with your prompt, from any harness.

The hooks read files on the machine only (the local memory index and `MAIN.md`); they never call the cloud, so they stay fast and work offline.

**When the model needs more** it calls the memory tools. The MCP server is the HarnessLink service's own (`superpi mcp`). Its tools include `memory_search` (search your memory across projects and machines), `memory_get` (read one entry in full), `memory_bank` (record a decision or outcome), `context_brief` (a budgeted brief of the project), `session_list` and `session_get`.

**Near the context limit** the extension tells you to start a new session with `/new`, and saves a handoff before omp compacts.

## Limits

- Org model rules and usage limits apply to omp's Anthropic and OpenAI Codex providers, the two the gateway routes.

## Guides

- [Installing HarnessLink](https://harnesslink.sh/docs/install): The full HarnessLink install guide: requirements, Windows, install options, verifying, the first-run onboarding, updating, troubleshooting and uninstalling.
- [Memory Banking](https://harnesslink.sh/docs/memory-banking): How HarnessLink turns each finished turn in omp, Claude Code, Codex, pi and Antigravity into a Markdown memory entry, when banking runs, and what reads it.
- [What HarnessLink captures from each harness](https://harnesslink.sh/docs/multi-harness): What HarnessLink captures from omp, Claude Code, Codex, pi, Antigravity and Cursor after setup, and how it stays a controller rather than a harness.

## Other harnesses

- [Claude Code](https://harnesslink.sh/harnesses/claude-code): Hooks, MCP memory tools, gateway and autobank
- [Codex](https://harnesslink.sh/harnesses/codex): Hooks, MCP memory tools, gateway and autobank
- [pi](https://harnesslink.sh/harnesses/pi): Transcripts, autobank and gateway
- [Antigravity](https://harnesslink.sh/harnesses/antigravity): Transcripts and one memory entry per conversation
- [Cursor](https://harnesslink.sh/harnesses/cursor): MCP memory tools, by hand; chats not captured

[All harnesses](https://harnesslink.sh/harnesses) · [Install guide](https://harnesslink.sh/docs) · [Pricing](https://harnesslink.sh/pricing) · [Integrations](https://harnesslink.sh/integrations)