You will get a production AI agent or RAG chatbot built on Claude or GPT
Project details
If you have documents, data, or an internal process and you want an AI agent that actually uses them, that is what I build. This gig is where all the retrieval and agent work lives: RAG over your own content, embeddings and vector search, tool-calling agents, scheduled automations, and MCP servers. Not a wrapper that guesses — an agent grounded in your data with sources you can check.
The closest thing I have shipped: I built most of Webflow's integration for the June 2026 Slack MCP launch — the MCP server itself, OAuth 2.0, webhooks, and the full Data API behind it. That is the same tool-calling and agent plumbing I would build for you. I also built Cloudless, a mobile AI coach running on Claude through a serverless proxy so keys never touch the device.
Stack: Node, TypeScript, Python, Postgres, Supabase, Claude and OpenAI, with MCP and vector search. Need a multi-step agent, an MCP server, or a scheduled automation? That's a larger build — message me for a custom quote (typically $7k+).
Not sure which tier fits? Start with Discovery, see the answers, decide from there. The fee rolls into whatever you build next.
The closest thing I have shipped: I built most of Webflow's integration for the June 2026 Slack MCP launch — the MCP server itself, OAuth 2.0, webhooks, and the full Data API behind it. That is the same tool-calling and agent plumbing I would build for you. I also built Cloudless, a mobile AI coach running on Claude through a serverless proxy so keys never touch the device.
Stack: Node, TypeScript, Python, Postgres, Supabase, Claude and OpenAI, with MCP and vector search. Need a multi-step agent, an MCP server, or a scheduled automation? That's a larger build — message me for a custom quote (typically $7k+).
Not sure which tier fits? Start with Discovery, see the answers, decide from there. The fee rolls into whatever you build next.
AI Development Type
Knowledge Representation, Model Tuning, Software MaintenanceAI Tools
SonnetAI Development Language
PythonWhat's included
| Service Tiers |
Starter
$700
|
Standard
$2,000
|
Advanced
$4,000
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 16 days |
Number of Revisions | 1 | 2 | 3 |
AI Model Integration | |||
Detailed Code Comments | - | ||
Knowledge Graph | - | - | |
Model Documentation | - | ||
Ontology | - | - | - |
Source Code | - | ||
Taxonomy | - | - | - |
Optional add-ons
You can add these on the next page.
Extra data source
(+ 3 Days)
+$600
Evaluation set + report
(+ 5 Days)
+$750
Slack or Telegram deployment
(+ 3 Days)
+$500Frequently asked questions
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PG
Penny G.
Aug 27, 2025
Webflow website addition
About Veldin
Senior Product Engineer | AI, API Integrations, Full-Stack SaaS
Sarajevo, Bosnia and Herzegovina - 6:02 am local time
The proof, public and clickable:
→ Led the Adobe Marketo Engage app and built the ActiveCampaign app — Marketo is Approved by Webflow and Enhanced-Security certified.
→ Contributed to the official Stripe and PayPal Webflow apps.
→ Built most of Webflow's integration for Slack's MCP launch — Webflow was one of 20+ launch partners alongside Atlassian, Canva, Linear, and Zoom.
I also ship complete products solo, from architecture to deployment:
→ Cloudless — an AI mobile app with a Claude-powered coach behind a secure serverless proxy (React Native)
→ Synqo — a multi-tenant workforce SaaS built solo (auth, scheduling, payroll, real-time dashboards)
→ Dora.ba — a live e-commerce + booking platform (260 products, 118 services)
What I'll build for you:
→ AI features — LLM integrations, AI agents, automation — in new or existing products
→ API & platform integrations — OAuth, webhooks, third-party APIs
→ Full SaaS builds — auth, billing, dashboards, multi-tenant
→ Web & mobile — Next.js, React, React Native
How I work: give me a clear scope and you get it shipped — fast, self-directed, fully async, with written updates at each milestone. No standups or daily syncs (a one-off scoping chat is fine). I'm newer to Upwork than to shipping — most of my work has been senior in-house and direct-client, and everything above is public and verifiable.
Stack: Next.js, React, React Native, Node.js, TypeScript, Python, Postgres/Supabase, Stripe, OAuth/webhooks, Claude/OpenAI.
Portfolio: veldin-portfolio.vercel.app
Steps for completing your project
After purchasing the project, send requirements so Veldin can start the project.
Delivery time starts when Veldin receives requirements from you.
Veldin works on your project following the steps below.
Revisions may occur after the delivery date.
Scope & sample
You send your use case and a sample of your data. I reply with a written scope, the model and vector store I'd use, and a firm timeline.
Build retrieval
I build the pipeline over your content so answers are grounded in your sources, with citations you can check.