hermes-pyodide/index.html at master · hdresearch/hermes-pyodide · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>Hermes Agent — Pyodide</title>
    <style>
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'SF Mono', Menlo, monospace; background: #0d1117; color: #c9d1d9; padding: 20px; }
        h1 { color: #58a6ff; margin-bottom: 8px; font-size: 1.4em; }
        .subtitle { color: #8b949e; margin-bottom: 20px; font-size: 0.9em; }
        #status { padding: 12px; background: #161b22; border: 1px solid #30363d; border-radius: 6px; margin-bottom: 16px; white-space: pre-wrap; font-size: 0.85em; max-height: 200px; overflow-y: auto; }
        #chat { display: flex; flex-direction: column; height: calc(100vh - 300px); min-height: 300px; }
        #messages { flex: 1; overflow-y: auto; padding: 12px; background: #161b22; border: 1px solid #30363d; border-radius: 6px 6px 0 0; }
        .msg { margin-bottom: 12px; line-height: 1.5; white-space: pre-wrap; }
        .msg.user { color: #58a6ff; }
        .msg.user::before { content: "› "; color: #8b949e; }
        .msg.assistant { color: #c9d1d9; }
        .msg.assistant::before { content: "⚕ "; color: #f0883e; }
        .msg.system { color: #8b949e; font-style: italic; font-size: 0.85em; }
        .msg.error { color: #f85149; font-size: 0.85em; }
        #input-row { display: flex; }
        #input { flex: 1; padding: 10px 14px; font-family: inherit; font-size: 0.95em; background: #0d1117; color: #c9d1d9; border: 1px solid #30363d; border-top: none; border-radius: 0 0 0 6px; outline: none; }
        #input:focus { border-color: #58a6ff; }
        #send { padding: 10px 20px; font-family: inherit; font-size: 0.95em; background: #238636; color: #fff; border: 1px solid #238636; border-top: none; border-radius: 0 0 6px 0; cursor: pointer; }
        #send:hover { background: #2ea043; }
        #send:disabled { background: #30363d; border-color: #30363d; cursor: not-allowed; }
        #api-row { display: flex; gap: 8px; margin-bottom: 16px; align-items: center; flex-wrap: wrap; }
        #api-row label { color: #8b949e; font-size: 0.85em; white-space: nowrap; }
        #api-row input, #api-row select { padding: 6px 10px; font-family: inherit; font-size: 0.85em; background: #0d1117; color: #c9d1d9; border: 1px solid #30363d; border-radius: 4px; outline: none; }
        #api-row input:focus, #api-row select:focus { border-color: #58a6ff; }
        #api-key { flex: 1; min-width: 200px; }
    </style>
</head>
<body>
    <h1>⚕ Hermes Agent</h1>
    <p class="subtitle">Running in-browser via Pyodide • API calls proxied through VM server</p>

    <div id="api-row">
        <label for="api-key">API Key:</label>
        <input id="api-key" type="password" placeholder="sk-or-... (OpenRouter key)" />
        <label for="model-select">Model:</label>
        <select id="model-select">
            <option value="google/gemini-2.0-flash-001">gemini-2.0-flash</option>
            <option value="anthropic/claude-sonnet-4-20250514">claude-sonnet-4</option>
            <option value="openai/gpt-4o">gpt-4o</option>
            <option value="meta-llama/llama-3.1-70b-instruct">llama-3.1-70b</option>
        </select>
    </div>

    <div id="status">Initializing Pyodide...</div>
    <div id="chat">
        <div id="messages"></div>
        <div id="input-row">
            <input id="input" type="text" placeholder="Loading agent..." disabled />
            <button id="send" disabled>Send</button>
        </div>
    </div>

    <script src="https://cdn.jsdelivr.net/pyodide/v0.27.6/full/pyodide.js"></script>
    <script>
    const statusEl = document.getElementById('status');
    const messagesEl = document.getElementById('messages');
    const inputEl = document.getElementById('input');
    const sendBtn = document.getElementById('send');
    const apiKeyEl = document.getElementById('api-key');
    const modelEl = document.getElementById('model-select');

    let pyodide = null;

    function log(msg) {
        statusEl.textContent += '\n' + msg;
        statusEl.scrollTop = statusEl.scrollHeight;
    }

    function addMessage(role, content) {
        const div = document.createElement('div');
        div.className = 'msg ' + role;
        div.textContent = content;
        messagesEl.appendChild(div);
        messagesEl.scrollTop = messagesEl.scrollHeight;
    }

    async function init() {
        try {
            log('Loading Pyodide runtime...');
            pyodide = await loadPyodide({
                stdout: (text) => { if (text.trim()) log('[py] ' + text); },
                stderr: (text) => { if (text.trim()) log('[py:err] ' + text); },
            });

            // Register JS proxy functions — ALL HTTP goes through same-origin /api/*
            // This completely avoids CORS and browser-forbidden XHR headers
            pyodide.registerJsModule("_js_proxy", {
                call_llm: async function(requestJson) {
                    const req = JSON.parse(requestJson);
                    const resp = await fetch('/api/chat', {
                        method: 'POST',
                        headers: { 'Content-Type': 'application/json' },
                        body: JSON.stringify(req),
                    });
                    return await resp.text();
                },
                // Generic HTTP proxy — used by requests.get/post monkey-patch
                do_fetch: async function(requestJson) {
                    const resp = await fetch('/api/fetch', {
                        method: 'POST',
                        headers: { 'Content-Type': 'application/json' },
                        body: requestJson,
                    });
                    const status = resp.status;
                    const body = await resp.text();
                    const ct = resp.headers.get('content-type') || '';
                    return JSON.stringify({ status, body, content_type: ct });
                }
            });

            log('Installing packages...');
            await pyodide.loadPackage(['micropip', 'sqlite3', 'pyyaml']);
            await pyodide.runPythonAsync(`
import micropip
await micropip.install([
    'openai', 'httpx', 'pydantic', 'tenacity',
    'python-dotenv', 'jinja2', 'fire', 'requests',
])
`);
            log('Packages installed.');

            log('Downloading hermes-agent bundle...');
            const resp = await fetch('/hermes-agent-bundle.tar.gz');
            const buf = await resp.arrayBuffer();
            pyodide.FS.writeFile('/tmp/bundle.tar.gz', new Uint8Array(buf));

            log('Unpacking agent code...');
            await pyodide.runPythonAsync(`
import tarfile, os, sys

os.makedirs('/home/pyodide/hermes-agent', exist_ok=True)
with tarfile.open('/tmp/bundle.tar.gz', 'r:gz') as tar:
    tar.extractall('/home/pyodide/hermes-agent')
sys.path.insert(0, '/home/pyodide/hermes-agent')

os.environ['PYODIDE'] = '1'
os.environ['HERMES_HOME'] = '/home/pyodide/.hermes'
os.makedirs('/home/pyodide/.hermes/logs', exist_ok=True)
os.makedirs('/home/pyodide/.hermes/sessions', exist_ok=True)

print(f'Agent code unpacked. Files: {len(os.listdir("/home/pyodide/hermes-agent"))}')
`);

            log('Loading hermes-agent...');
            await pyodide.runPythonAsync(`
# Import and patch pyodide_shims FIRST
import pyodide_shims

# NOW install the proxy transport that routes through /api/chat
# This completely replaces the _FetchTransport with one that uses
# our JS bridge (fetch to same-origin /api/chat) instead of
# trying to reach OpenRouter directly from the browser.

import httpx
import json
from pyodide.ffi import run_sync as _pyodide_run_sync
import _js_proxy

class _ServerProxyTransport(httpx.BaseTransport):
    """Routes all HTTP through the VM's /api/chat endpoint via JS fetch.

    The JS fetch() goes to the same-origin server (no CORS).
    The server then makes the real HTTP call to OpenRouter/OpenAI/etc.
    """

    def __init__(self):
        self._api_key = None
        self._base_url = None

    def configure(self, api_key, base_url):
        self._api_key = api_key
        self._base_url = base_url

    def handle_request(self, request: httpx.Request) -> httpx.Response:
        url_str = str(request.url)

        # Only proxy chat completions — stub out everything else
        if '/chat/completions' not in url_str:
            # Models list, etc. — return empty stub
            return httpx.Response(200, json={"data": [], "object": "list"})

        # Parse the request body
        body = json.loads(request.content) if request.content else {}

        # Build proxy request
        proxy_req = json.dumps({
            "api_key": self._api_key or "",
            "base_url": self._base_url or "https://openrouter.ai/api/v1",
            "payload": body,
        })

        # Call JS fetch via the registered module — completely avoids
        # XMLHttpRequest and its forbidden-header issues
        resp_text = _pyodide_run_sync(_js_proxy.call_llm(proxy_req))

        return httpx.Response(
            status_code=200,
            headers={"content-type": "application/json"},
            content=resp_text.encode("utf-8") if isinstance(resp_text, str) else resp_text,
        )

# Create a global transport instance
_proxy_transport = _ServerProxyTransport()

# Monkey-patch pyodide_shims so make_openai_client uses our proxy transport
import pyodide_shims as _shims

def _patched_get_fetch_transport():
    return _proxy_transport

_shims._get_fetch_transport = _patched_get_fetch_transport
_shims._fetch_transport = _proxy_transport

# Also monkey-patch the OpenAI client constructor to always use our transport
import openai
_OrigOpenAI = openai.OpenAI

def _PatchedOpenAI(**kwargs):
    kwargs.pop('http_client', None)  # Remove any existing http_client
    custom_httpx = httpx.Client(transport=_proxy_transport)
    kwargs['http_client'] = custom_httpx
    return _OrigOpenAI(**kwargs)

openai.OpenAI = _PatchedOpenAI

# Monkey-patch requests library to route through JS bridge too
# This is needed because model_metadata.py calls requests.get() to fetch
# model info from OpenRouter, and browser_tool.py uses requests.post()
import requests as _requests

class _ProxyResponse:
    """Minimal requests.Response work-alike returned by our proxy."""
    def __init__(self, status_code, text, content_type=''):
        self.status_code = status_code
        self.text = text
        self.content = text.encode('utf-8') if isinstance(text, str) else text
        self.headers = {'content-type': content_type}
        self.ok = 200 <= status_code < 300

    def json(self):
        return json.loads(self.text)

    def raise_for_status(self):
        if not self.ok:
            raise Exception(f'HTTP {self.status_code}')

_orig_requests_get = _requests.get
_orig_requests_post = _requests.post

def _proxied_get(url, **kwargs):
    req = json.dumps({"url": url, "method": "GET", "headers": {}})
    resp_json = _pyodide_run_sync(_js_proxy.do_fetch(req))
    resp = json.loads(resp_json)
    return _ProxyResponse(resp['status'], resp['body'], resp.get('content_type', ''))

def _proxied_post(url, **kwargs):
    headers = kwargs.get('headers', {})
    data = kwargs.get('data')
    json_body = kwargs.get('json')
    body = None
    if json_body is not None:
        body = json.dumps(json_body)
        headers.setdefault('Content-Type', 'application/json')
    elif data is not None:
        body = data if isinstance(data, str) else json.dumps(data)
    req = json.dumps({"url": url, "method": "POST", "headers": headers, "body": body})
    resp_json = _pyodide_run_sync(_js_proxy.do_fetch(req))
    resp = json.loads(resp_json)
    return _ProxyResponse(resp['status'], resp['body'], resp.get('content_type', ''))

_requests.get = _proxied_get
_requests.post = _proxied_post
print('requests library patched to use server proxy')

# Now import the agent
from run_agent import AIAgent
print('AIAgent imported successfully')
print('All proxy transports installed')
`);

            log('\\n✅ Agent ready! Enter your API key and send a message.');
            inputEl.disabled = false;
            sendBtn.disabled = false;
            inputEl.placeholder = 'Type a message...';
            inputEl.focus();

        } catch (e) {
            log('ERROR: ' + e.message);
            console.error(e);
            addMessage('error', 'Failed to load agent: ' + e.message);
        }
    }

    async function sendMessage() {
        const text = inputEl.value.trim();
        if (!text) return;

        const apiKey = apiKeyEl.value.trim();
        if (!apiKey) {
            addMessage('error', 'Please enter an API key (OpenRouter key starting with sk-or-...)');
            apiKeyEl.focus();
            return;
        }

        const model = modelEl.value;
        addMessage('user', text);
        inputEl.value = '';
        sendBtn.disabled = true;
        inputEl.disabled = true;

        try {
            const escaped = text.replace(/\\/g, '\\\\').replace(/'/g, "\\'").replace(/\n/g, '\\n');
            const escapedKey = apiKey.replace(/\\/g, '\\\\').replace(/'/g, "\\'");

            const result = await pyodide.runPythonAsync(`
import os

os.environ['OPENROUTER_API_KEY'] = '${escapedKey}'

# Configure the proxy transport with the user's key
_proxy_transport.configure('${escapedKey}', 'https://openrouter.ai/api/v1')

try:
    agent = AIAgent(
        base_url='https://openrouter.ai/api/v1',
        model='${model}',
        api_key='${escapedKey}',
        quiet_mode=True,
        enabled_toolsets=['memory', 'planning'],
    )
    result = agent.run_conversation('${escaped}')
    _response = result.get('final_response', str(result)) if isinstance(result, dict) else str(result)
except Exception as e:
    import traceback
    _response = f'Error: {type(e).__name__}: {e}'
    traceback.print_exc()

_response
`);
            addMessage('assistant', result);

        } catch (e) {
            addMessage('error', 'Error: ' + e.message);
            console.error(e);
        }

        sendBtn.disabled = false;
        inputEl.disabled = false;
        inputEl.focus();
    }

    sendBtn.addEventListener('click', sendMessage);
    inputEl.addEventListener('keydown', (e) => {
        if (e.key === 'Enter' && !sendBtn.disabled) sendMessage();
    });

    init();
    </script>
</body>
</html>