Agents projects

Tool-calling agents built with LangChain and LangGraph. Built by Chiranjeev Thomas, senior full-stack engineer, agentic ai.

Live

Chases overdue invoices for freelancers through three escalation levels. Tools are gated per level, and nothing is sent without human approval.

Open source

Upload PDFs and chat with them. The model decides when to search, results are reranked, and every answer shows its sources.

run #2043 · level 2 dispute

prompt (level 2 tone)

calculate_late_fees

draft_formal_demand_letter

human approval

✓ tone✓ tools✓ approval

In progress

Per-step tracing of every agent run, plus a golden-set eval that checks tone and tool choice at each escalation level before a prompt change ships.

Writing on Agents

Your agent shouldn’t know about tools it can’t use yetState-based tool gating in LangChain — how InvoiceChaser keeps a debt-collection agent polite until escalation is earned, by changing what the model can see rather than what it’s asked to do.