You will get a custom AI agent system with FastAPI and Claude API
Top Rated
Project details
I build custom AI agent systems that make real decisions, use tools, and return structured outputs — not just chatbots that answer questions.
Every system I deliver is built directly with the Anthropic Claude or OpenAI API in Python, deployed to a live URL, and handed off with clean GitHub documentation. No no-code tools, no black boxes, no monthly SaaS dependencies.
My recent work includes a multi-agent research assistant that takes a user query, breaks it into search strategies, delegates to specialized agents, and returns a formatted research report in under 30 seconds — built with FastAPI, Tavily, and Claude, deployed to production.
What sets my work apart is systems thinking. I don't just write code — I design agent architectures that are reliable, maintainable, and built to grow. Every project includes clear documentation so your team can understand and extend the system without depending on me.
If you need a single focused agent, a multi-agent pipeline, or a full backend system with API endpoints — I can build it.
Every system I deliver is built directly with the Anthropic Claude or OpenAI API in Python, deployed to a live URL, and handed off with clean GitHub documentation. No no-code tools, no black boxes, no monthly SaaS dependencies.
My recent work includes a multi-agent research assistant that takes a user query, breaks it into search strategies, delegates to specialized agents, and returns a formatted research report in under 30 seconds — built with FastAPI, Tavily, and Claude, deployed to production.
What sets my work apart is systems thinking. I don't just write code — I design agent architectures that are reliable, maintainable, and built to grow. Every project includes clear documentation so your team can understand and extend the system without depending on me.
If you need a single focused agent, a multi-agent pipeline, or a full backend system with API endpoints — I can build it.
AI Algorithms
Large Language Model, Transformer ModelAI Applications
AI Chatbot, AI-Generated Code, AIOps, Conversational AI, Natural Language Generation, Natural Language UnderstandingAI Development Language
PythonAI Tools
GitHub Copilot, Gradio, StreamlitAI Models
ChatGPT, GPT-4What's included
| Service Tiers |
Starter
$350
|
Standard
$750
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 5 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
AI Model Integration | |||
Batch Normalization | - | - | |
Database Integration | - | ||
Detailed Code Comments | - | ||
Image Upscaling | - | ||
MLOps | - | ||
Model Deployment | - | ||
Model Documentation | - | ||
Model Monitoring | - | ||
Model Testing & Optimization | - | ||
Model Tuning | - | ||
Natural Language Processing | |||
NLP Tokenization | |||
Pre-Training | |||
Prompt Engineering | |||
Setup File | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $300
Additional Revision
+$100Frequently asked questions
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KM
Katlyn M.
May 4, 2026
AI-Assisted Research for Behavioral Health Mapping
Steven was absolutely fantastic to work with. He completed very complex AI-assisted research for me in a timely manner and was meticulous about accuracy and very well organized. Highly recommended!
JX
Jess X.
Apr 4, 2026
Long term data and research support analyst
Great experience working with Steven!! Sadly projects all ended but I would recommend for data analysis and market research
EL
Eric L.
Nov 27, 2025
Remote Usability Testing - Document Image Capture in Massachusetts
RM
Ramin M.
Nov 25, 2025
Trade Area Analysis
KM
Katlyn M.
Nov 18, 2025
AI-Assisted Research for Behavioral Health Mapping
Very responsive with quick turnaround and accurate research!
About Steven
Custom Software & AI Apps for Growing Businesses
100%
Job Success
Winchendon, United States - 1:55 pm local time
You work with me directly from discovery through production launch. I'm Steven — I run Clarwick. One person scopes the work, writes the code, and ships something your team can actually use.
What I build
• Sales and follow-up systems — lightweight CRM, prospect tracking, outreach workflows built around how your team sells
• Business automations and AI workflows — intake, follow-up drafts, data enrichment, hand-offs between tools you already use
• Custom applications — internal dashboards, client portals, and full apps with auth and billing when you need them
How projects run
1. Short intro call — you describe what's slow, manual, or broken
2. I scope it and give you one quote before code is written
3. I build and deliver — no hand-off to a different developer mid-project
Most engagements are fixed-price for a defined scope. Hourly on my profile is for small advisory blocks only.
Proof (production work, not mockups)
• AI application copilot — profile-driven SaaS with proposals, job scoring, auth, billing, and live deployment
• Sales and outreach platform — prospect enrichment, session-based outreach, and pipeline tooling for a growing sales team
• Long-term Upwork clients — Top Rated, 100% Job Success on complex research and data work (accuracy, structure, and clear delivery under tight specs)
Background that helps on software projects
I'm also the founder of Catchavo, a production SaaS I build and operate end to end. That work is separate from client projects, but it means I'm used to real specs, edge cases, billing, and production debugging — not slide decks.
Good fit if you
• Can describe the problem in plain language
• Want something built for your process, not another subscription you'll fight with
• Need a scoped quote before committing
Less ideal if you need the cheapest hourly tickets or a large agency team.
If you share what you're trying to fix, your tools today, and any deadline, I'll tell you honestly what's feasible.
Steps for completing your project
After purchasing the project, send requirements so Steven can start the project.
Delivery time starts when Steven receives requirements from you.
Steven works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Planning
Review your requirements, ask clarifying questions, and confirm the agent architecture, tech stack, and delivery format before writing any code.
Development
Build the agent system iteratively — core logic first, then integrations, then testing. You'll receive progress updates throughout.