appp.py

import gradio as gr
import os
from huggingface_hub import InferenceClient

HF_TOKEN = os.environ.get("HF_TOKEN", "")
MODEL = "Qwen/Qwen2.5-72B-Instruct"

SYSTEM_PROMPT = """You are an expert API architect and indie hacker advisor.

You know every major API deeply:

PAYMENT: Stripe, Paddle, LemonSqueezy, PayPal, Razorpay
AI/ML: OpenAI, Anthropic Claude, Replicate, HuggingFace Inference, AssemblyAI, ElevenLabs
COMMUNICATION: Twilio (SMS/Voice), SendGrid (email), Resend, Mailgun, WhatsApp Business
DATA/ENRICHMENT: Clearbit, Apollo.io, Hunter.io, Proxycurl
MAPS/LOCATION: Google Maps, Mapbox, HERE, OpenStreetMap
MEDIA: Cloudinary, Mux (video), Imgix, Transloadit
FINANCE: Alpha Vantage, Polygon.io, CoinGecko, Plaid, Finnhub
SEARCH: Algolia, Typesense, Meilisearch
AUTH: Auth0, Clerk, Supabase Auth, Firebase Auth
DATABASE: Supabase, Firebase, PlanetScale, Neon, Upstash
SCRAPING: Apify, ScraperAPI, Browserless, Firecrawl
ANALYTICS: Mixpanel, PostHog, Amplitude, Plausible

When a user describes their product idea, recommend the perfect API stack.

Your response MUST follow this exact format:

## 🎯 Your Idea in One Line
(restate the idea clearly)

## 🔧 Recommended API Stack

For each API (recommend 3-5 total):

### [API Name] — [Role in the product]
- **What it does for you:** (one sentence)
- **Pricing:** (free tier + paid, be specific with numbers)
- **Docs:** (exact URL)
- **Why not alternatives:** (one sentence)
- **Integration difficulty:** Easy / Medium / Hard

## 💰 Monthly Cost Estimate
| Users | Est. Cost |
|-------|-----------|
| 100 | $X/month |
| 1,000 | $X/month |
| 10,000| $X/month |

## ⚡ Build Order
1. First: [API] — because...
2. Second: [API] — because...
3. Third: [API] — because...

## 🚨 Top Mistake to Avoid
(the most common mistake with this stack)

Be specific, honest about pricing, always mention free tiers."""


def get_stack(idea, budget, level, market):
if not idea.strip():
return "⚠️ Please describe your product idea."

if not HF_TOKEN:
return (
"⚠️ **HF_TOKEN is not set.**\n\n"
"Go to: **Space Settings → Secrets → New secret**\n"
"- Name: `HF_TOKEN`\n"
"- Value: your token from [huggingface.co/settings/tokens](https://huggingface.co/settings/tokens)\n\n"
"Free token — no credit card needed!"
)

try:
client = InferenceClient(token=HF_TOKEN)

prompt = f"""Product idea: {idea}

Monthly API budget: {budget}
Technical level: {level}
Target market: {market}

Recommend the best API stack for this product."""

messages = [
{"role": "system", "content": SYSTEM_PROMPT},
{"role": "user", "content": prompt}
]

response = client.chat.completions.create(
model=MODEL,
messages=messages,
max_tokens=1500,
temperature=0.7
)
return response.choices[0].message.content

except Exception as e:
err = str(e)
if "401" in err or "auth" in err.lower():
return "❌ Invalid token. Check your HF_TOKEN in Space Settings."
if "429" in err or "rate" in err.lower():
return "❌ Rate limit hit. Wait 30 seconds and try again."
if "loading" in err.lower():
return "⏳ Model is loading (cold start). Wait 20 seconds and try again."
return f"❌ Error: {err}"


def ask_followup(question, prev):
if not question.strip():
return ""
if not prev or prev.startswith("⚠️") or prev.startswith("❌"):
return "⚠️ Please generate a stack recommendation first."

try:
client = InferenceClient(token=HF_TOKEN)
messages = [
{"role": "system", "content": SYSTEM_PROMPT},
{
"role": "user",
"content": (
f"Previous recommendation:\n{prev}\n\n"
f"Follow-up question: {question}\n\n"
f"Answer concisely and helpfully."
)
}
]
response = client.chat.completions.create(
model=MODEL,
messages=messages,
max_tokens=800,
temperature=0.7
)
return response.choices[0].message.content

except Exception as e:
return f"❌ Error: {str(e)}"


EXAMPLES = [
["A Notion-like notes app with AI summarization", "$50/month", "Intermediate", "Students"],
["SMS marketing platform for small restaurants", "$30/month", "Beginner", "Restaurant owners"],
["Job board that auto-matches candidates with AI", "$100/month", "Advanced", "Tech recruiters"],
["Podcast transcription and highlight tool", "$20/month", "Beginner", "Podcasters"],
["Crypto portfolio tracker with price alerts", "$0 (free only)", "Intermediate", "Retail investors"],
]

css = """
.gradio-container { max-width: 900px !important; margin: auto; }
footer { display: none !important; }
"""

with gr.Blocks(css=css, title="API Stack Finder") as demo:
gr.Markdown("""
# 🔧 API Stack Finder
**Describe your product idea → Get the perfect API stack, pricing, and build order**

Powered by **Qwen2.5-72B** via HuggingFace Inference API — 100% Free.
""")

with gr.Row():
with gr.Column(scale=3):
idea_input = gr.Textbox(
label="Describe your product idea",
placeholder="e.g. A platform where freelancers can sell services and get paid instantly...",
lines=4
)
with gr.Column(scale=1):
budget_input = gr.Dropdown(
choices=[
"$0 (free only)",
"$10/month",
"$30/month",
"$50/month",
"$100/month",
"$500/month",
"Unlimited"
],
value="$30/month",
label="Monthly API budget"
)
level_input = gr.Dropdown(
choices=["Beginner", "Intermediate", "Advanced"],
value="Intermediate",
label="Technical level"
)
market_input = gr.Textbox(
label="Target market",
placeholder="e.g. Small business owners",
value="General consumers"
)

gr.Markdown("**Try an example:**")
with gr.Row():
for ex in EXAMPLES:
gr.Button(ex[0][:32] + "...", size="sm").click(
lambda e=ex: (e[0], e[1], e[2], e[3]),
outputs=[idea_input, budget_input, level_input, market_input]
)

submit_btn = gr.Button("🔍 Find My API Stack", variant="primary", size="lg")
output = gr.Markdown("*Your API stack will appear here...*")

gr.Markdown("---")
gr.Markdown("### 💬 Ask a follow-up")

with gr.Row():
followup_input = gr.Textbox(
label="Follow-up question",
placeholder="e.g. Is there a free alternative to Stripe? / How do I add auth cheaply?",
scale=4
)
followup_btn = gr.Button("Ask", scale=1, variant="secondary")

followup_output = gr.Markdown()

submit_btn.click(
get_stack,
inputs=[idea_input, budget_input, level_input, market_input],
outputs=output
)
followup_btn.click(
ask_followup,
inputs=[followup_input, output],
outputs=followup_output
)

gr.Markdown("""
---
🤖 Model: `Qwen2.5-72B-Instruct` · 🆓 Free via HuggingFace Inference API
🔑 Get your free token: [huggingface.co/settings/tokens](https://huggingface.co/settings/tokens)
""")

if __name__ == "__main__":
demo.launch()

app.py

@@ -1,237 +0,0 @@
-import gradio as gr
-import os
-from openai import OpenAI
-
-API_KEY = os.environ.get("AVALAI_API_KEY", "")
-BASE_URL = "https://api.avalai.ir/v1"
-MODEL = "claude-sonnet-4-6"
-
-SYSTEM_PROMPT = """You are an expert API architect and indie hacker advisor.
-
-You know every major API deeply:
-
-PAYMENT: Stripe, Paddle, LemonSqueezy, PayPal, Razorpay
-AI/ML: OpenAI, Anthropic Claude, Replicate, HuggingFace Inference, AssemblyAI, ElevenLabs
-COMMUNICATION: Twilio (SMS/Voice), SendGrid (email), Resend, Mailgun, WhatsApp Business
-DATA/ENRICHMENT: Clearbit, Apollo.io, Hunter.io, Proxycurl
-MAPS/LOCATION: Google Maps, Mapbox, HERE, OpenStreetMap
-MEDIA: Cloudinary, Mux (video), Imgix, Transloadit
-FINANCE: Alpha Vantage, Polygon.io, CoinGecko, Plaid, Finnhub
-SEARCH: Algolia, Typesense, Meilisearch
-AUTH: Auth0, Clerk, Supabase Auth, Firebase Auth
-DATABASE: Supabase, Firebase, PlanetScale, Neon, Upstash
-SCRAPING: Apify, ScraperAPI, Browserless, Firecrawl
-ANALYTICS: Mixpanel, PostHog, Amplitude, Plausible
-
-When a user describes their product idea, recommend the perfect API stack.
-
-Your response MUST follow this exact format:
-
-## 🎯 Your Idea in One Line
-(restate the idea clearly)
-
-## 🔧 Recommended API Stack
-
-For each API (recommend 3-5 total):
-
-### [API Name] — [Role in the product]
-- **What it does for you:** (one sentence)
-- **Pricing:** (free tier + paid, be specific with numbers)
-- **Docs:** (exact URL)
-- **Why not alternatives:** (one sentence)
-- **Integration difficulty:** Easy / Medium / Hard
-
-## 💰 Monthly Cost Estimate
-| Users | Est. Cost |
-|-------|-----------|
-| 100   | $X/month  |
-| 1,000 | $X/month  |
-| 10,000| $X/month  |
-
-## ⚡ Build Order
-1. First: [API] — because...
-2. Second: [API] — because...
-3. Third: [API] — because...
-
-## 🚨 Top Mistake to Avoid
-(the most common mistake with this stack)
-
-Be specific, honest about pricing, always mention free tiers."""
-
-
-def get_client():
-    return OpenAI(
-        api_key=API_KEY,
-        base_url=BASE_URL
-    )
-
-
-def get_stack(idea, budget, level, market):
-    if not idea.strip():
-        return "⚠️ Please describe your product idea."
-
-    if not API_KEY:
-        return (
-            "⚠️ **AVALAI_API_KEY is not set.**\n\n"
-            "Go to: **Space Settings → Secrets → New secret**\n"
-            "- Name: `AVALAI_API_KEY`\n"
-            "- Value: your key from [avalai.ir](https://avalai.ir)"
-        )
-
-    try:
-        client = get_client()
-        prompt = f"""Product idea: {idea}
-
-Monthly API budget: {budget}
-Technical level: {level}
-Target market: {market}
-
-Recommend the best API stack for this product."""
-
-        response = client.chat.completions.create(
-            model=MODEL,
-            messages=[
-                {"role": "system", "content": SYSTEM_PROMPT},
-                {"role": "user", "content": prompt}
-            ],
-            max_tokens=1500,
-            temperature=0.7
-        )
-        return response.choices[0].message.content
-
-    except Exception as e:
-        err = str(e)
-        if "401" in err or "auth" in err.lower():
-            return "❌ Invalid API key. Check your AVALAI_API_KEY in Space Settings."
-        if "429" in err:
-            return "❌ Rate limit hit. Please wait a moment and try again."
-        if "model" in err.lower():
-            return f"❌ Model error — check if `claude-sonnet-4-6` is available on your AvалAI plan.\n\nDetails: {err}"
-        return f"❌ Error: {err}"
-
-
-def ask_followup(question, prev):
-    if not question.strip():
-        return ""
-    if not prev or prev.startswith("⚠️") or prev.startswith("❌"):
-        return "⚠️ Please generate a stack recommendation first."
-
-    try:
-        client = get_client()
-        response = client.chat.completions.create(
-            model=MODEL,
-            messages=[
-                {"role": "system", "content": SYSTEM_PROMPT},
-                {
-                    "role": "user",
-                    "content": (
-                        f"Previous recommendation:\n{prev}\n\n"
-                        f"Follow-up question: {question}\n\n"
-                        f"Answer concisely and helpfully."
-                    )
-                }
-            ],
-            max_tokens=800,
-            temperature=0.7
-        )
-        return response.choices[0].message.content
-
-    except Exception as e:
-        return f"❌ Error: {str(e)}"
-
-
-EXAMPLES = [
-    ["A Notion-like notes app with AI summarization", "$50/month", "Intermediate", "Students"],
-    ["SMS marketing platform for small restaurants", "$30/month", "Beginner", "Restaurant owners"],
-    ["Job board that auto-matches candidates with AI", "$100/month", "Advanced", "Tech recruiters"],
-    ["Podcast transcription and highlight tool", "$20/month", "Beginner", "Podcasters"],
-    ["Crypto portfolio tracker with price alerts", "$0 (free only)", "Intermediate", "Retail investors"],
-]
-
-css = """
-.gradio-container { max-width: 900px !important; margin: auto; }
-footer { display: none !important; }
-"""
-
-with gr.Blocks(css=css, title="API Stack Finder") as demo:
-    gr.Markdown("""
-# 🔧 API Stack Finder
-**Describe your product idea → Get the perfect API stack, pricing, and build order**
-
-Powered by **Claude Sonnet 4.6** via [AvалAI](https://avalai.ir)
-""")
-
-    with gr.Row():
-        with gr.Column(scale=3):
-            idea_input = gr.Textbox(
-                label="Describe your product idea",
-                placeholder="e.g. A platform where freelancers can sell services and get paid instantly...",
-                lines=4
-            )
-        with gr.Column(scale=1):
-            budget_input = gr.Dropdown(
-                choices=[
-                    "$0 (free only)",
-                    "$10/month",
-                    "$30/month",
-                    "$50/month",
-                    "$100/month",
-                    "$500/month",
-                    "Unlimited"
-                ],
-                value="$30/month",
-                label="Monthly API budget"
-            )
-            level_input = gr.Dropdown(
-                choices=["Beginner", "Intermediate", "Advanced"],
-                value="Intermediate",
-                label="Technical level"
-            )
-            market_input = gr.Textbox(
-                label="Target market",
-                placeholder="e.g. Small business owners",
-                value="General consumers"
-            )
-
-    gr.Markdown("**Try an example:**")
-    with gr.Row():
-        for ex in EXAMPLES:
-            gr.Button(ex[0][:32] + "...", size="sm").click(
-                lambda e=ex: (e[0], e[1], e[2], e[3]),
-                outputs=[idea_input, budget_input, level_input, market_input]
-            )
-
-    submit_btn = gr.Button("🔍 Find My API Stack", variant="primary", size="lg")
-    output = gr.Markdown("*Your API stack will appear here...*")
-
-    gr.Markdown("---")
-    gr.Markdown("### 💬 Ask a follow-up")
-
-    with gr.Row():
-        followup_input = gr.Textbox(
-            label="Follow-up question",
-            placeholder="e.g. Is there a free alternative to Stripe? / How do I add auth cheaply?",
-            scale=4
-        )
-        followup_btn = gr.Button("Ask", scale=1, variant="secondary")
-
-    followup_output = gr.Markdown()
-
-    submit_btn.click(
-        get_stack,
-        inputs=[idea_input, budget_input, level_input, market_input],
-        outputs=output
-    )
-    followup_btn.click(
-        ask_followup,
-        inputs=[followup_input, output],
-        outputs=followup_output
-    )
-
-    gr.Markdown("""
----
-🤖 Model: `claude-sonnet-4-6` · 🔑 API: [avalai.ir](https://avalai.ir)
-""")
-
-if __name__ == "__main__":
-    demo.launch()