Why I trust runnable tags instead of node names in a LangGraph SSE stream
A streaming and routing repair for real event metadata that differed from mocks, leaked tool preambles, and let stale turns influence new routes.
AI Systems
Engineering reliable AI features with explicit evaluation, safety, and operational boundaries.
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Why I stopped asking an LLM to repeat a download URL
A deterministic terminal formatter and safe-anchor boundary for an LMS ZIP capability link that disappeared before the final response.
Let the LLM read refund policy; let code calculate the money
Natural-language cancellation clauses become evidence-bound intervals, while a deterministic engine owns boundaries, fees, refunds, and blocking ambiguity.
A disclosure brief that is not allowed to guess one digit
Explaining rights issues and convertible bonds while exact-matching every number to source text and rejecting investment-language overreach.
Reducing 35 support records to six FAQ candidates without auto-publishing
A precision-first FAQ pipeline where deterministic code owns PII and evidence checks while an LLM performs bounded semantic merging and drafting.
Why approving the card did not execute the reservation
Separating MCP content blocks, LangGraph checkpoint forks, and stale actions to make the human-in-the-loop flow verifiable beyond the UI.
Why an LLM does not control progression in my learning game
The model classifies free-text answers into four verdicts; authored anchors and a deterministic engine own teaching content, retries, affection, and endings.