Products

Prompt Editor

Score, fix and re-run prompts with your team and your coding agent.

What it is

A shared editor at editor.hoshoai.com where you score, fix and re-run hard prompts - with your team, and with your coding agent via co-presence. Reviews persist: scores, findings and your accept/dismiss decisions live in your workspace, so a prompt's history is something you can return to rather than a one-off report.

Signing in and workspaces

Sign-in is with Google, and minting a key at /setup/mcp or /setup/git creates your own workspace in the same click. What you see is decided by workspace membership, enforced server-side and failing closed - the Security page says exactly who can reach what. Shared team workspaces - everyone on your team in one workspace, one pooled allowance - are set up with us: otto@hoshoai.com.

Running a review

Add a prompt - paste it in, or open one from a connected repo. When you add a prompt you also tell Hosho which model family it targets and whether that model is a standard or a reasoning model, so the provider-fit checks judge it against the right conventions.
Run the review - a full review takes a few minutes and produces the overall score, the four macro factors, their sub-factors, and line-anchored findings with suggested fixes.
Work the findings - each finding is a card: accept it to apply the suggested edit, or dismiss it with your reasoning. Your decisions are remembered - a later review will not re-recommend what you already settled.
Check changes - after editing, the incremental re-check re-scores what changed. It is free on every plan; a full re-review spends a run. The two are separate buttons, so the spend is always a choice you made.

What the scores mean is its own page: How Hosho scores.

Every session of edits becomes a version, so you can see how a prompt and its score moved over time. A prompt can also be shared read-only by link - the link pins the exact version it was created on, and you can revoke it at any time.

Co-presence - your coding agent in the room

The editor is not only for people. With the co-presence plugin installed, your coding agent joins the same live session: it reads the prompt and its review, talks to you in the editor's Coding Agent panel, highlights the line it is describing so your editor scrolls to it, and stages edit proposals you accept or reject with one click.

Every change still goes through you.

The agent stages proposals; applying one takes permission you grant in that session. It has no path to your prompt that skips your accept - which is what makes it safe to leave it working alongside you.

It is a Claude Code plugin and takes about two minutes to install. Set up co-presence walks through the plugin, the session commands and the permissions it asks for.

The Hosho GitHub App

The App is the editor's reach into a repo - and nothing else's.

Connecting the hosho-ai GitHub App lets the editor read your prompt files from a repo and open pull requests with the fixes you accepted, authored as hosho-ai. It is entirely optional - pasting prompts needs no GitHub connection at all.

Two things it is not: the Git Bot does not use it (the Action runs in your CI on GitHub's own token - installing the App is never part of that setup), and the MCP does not use it either.