Scoping a Trustworthy Support Agent: Tool Permissions, Guardrails and the Prompt That Held
A teardown of an AI support agent shipped on Base44 for a B2B SaaS — how the tool permissions were bounded, where the guardrails earned their place, and the system prompt that kept it trustworthy in production.
Scoping a Trustworthy Support Agent
This is a teardown of an AI support agent shipped on Base44 for a B2B SaaS client. The goal: let customers ask natural-language questions about their account and usage, and get answers grounded in real data — without the agent ever inventing a record, deleting something, or escalating a hallucinated ticket.
The brief
The client wanted a support agent that could answer questions like “why did my invoice jump last month?” and “how many seats am I using versus my plan?”. The data lived in three places: the billing entity, the subscription entity, and the usage logs. A human support rep could answer in 5–10 minutes. The agent had to answer in seconds — and be wrong zero times on the facts.
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