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Ranjith Kumar KondojuMay 22, 2026 • 13 min read
I Built an Oracle DBA That Lives in Telegram. It Cut a 500K-Row Scan to 5 — After Asking Permission.
An AI agent that diagnoses slow Oracle queries, proposes index fixes, and asks before touching produ...
#hermeschallenge#hermesagent#agents#oracle
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Mukunda Rao Katta3d ago • 5 min read
prompt-shield: a tiny, zero-dep prompt-injection detector you can drop in front of any agent
A pattern-based first line of defense for LLM apps. Five rules, zero runtime deps, deterministic, fa...
#hermeschallenge#ai#llm#agents
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Mukunda Rao Katta3d ago • 5 min read
Format Tool Output for LLMs Before It Becomes a Tool Result: tool-output-format
Render tool output as LLM-friendly Markdown before returning it as a tool result, so the model reads...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 4 min read
Per-Key Rate Limiting for Agent Tool Calls: Stop One User From Breaking Everything
Multi-tenant agents share infrastructure. When one user's agent calls the web search tool 200 times....
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
The Full Conversation Lifecycle: From First Message to Stored Memory
How agent-message-window, conversation-codec, and agent-resume work together to manage a conversatio...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
Debug Agent Failures After They Happen with JSONL Traces
Using agenttap and agent-replay-trace to reconstruct and step through agent runs for post-incident d...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
My agent retried a 401 Unauthorized nine times. The fix was two lines.
A closed ErrorKind enum for tool exceptions. Classify errors by kind so the agent loop can branch on...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
Your Agent Loop Has No Clock: agent-deadline
A cooperative per-task deadline for agent loops that raises DeadlineExceeded at the next check_or_ra...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 6 min read
Production Python Agent Checklist: 15 Things Before You Deploy
15 things to check before deploying a Python LLM agent to production. Each one has a library or patt...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
token-budget-py: Thread-Safe Token and USD Caps for Python Agents
A Python port of token-budget-pool with a reserve-then-commit two-phase API. 18 tests. Thread-safe s...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 4 min read
Per-Tool Call-Count Caps: Prevent Any Single Tool From Running Away
Your agent has a web_search tool. During a long task, the model calls it 47 times. Your search API.....
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 4 min read
Make Your Agent Idempotent: Run It Twice, Get the Same Result
The user submitted the same form twice. Both requests hit your agent. The agent created two orders,....
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
Stop Your Agent from Sneaking in 'I would recommend...' When You Said Only 'escalate', 'resolve', or 'defer'
llm-output-validator is a rule-based Python library that validates LLM string outputs against compos...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
agent-fn-registry: Register Your Agent Tools With Schema, Side Effects, and Defaults in One Place
A Python registry that stores (fn, schema, side_effects, defaults) together. Replaces scattered per-...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 4 min read
agenttrace-rs: Group LLM Calls into Named Runs and Get Cost Breakdowns in Rust
A Rust crate that records LLM calls into named runs and reports total cost, p50/p95 latency, and per...
#hermeschallenge#ai#rust#agents
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Mukunda Rao Katta3d ago • 5 min read
agent-resume: checkpoint and resume long-running AI agent jobs in Python
A zero-dependency Python library that lets AI agent batch jobs survive crashes by checkpointing each...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
My agent cited a document that does not exist. Here is the library I wrote to catch that.
agent-citation is a Python library for structured WHERE-layer citations in AI agent outputs, with pu...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 6 min read
Five Observability Layers Every Production Agent Needs
CALLS, COST, WHY, WHERE, and WIRE: the five observability layers for Python LLM agents and the libra...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 4 min read
Session-Scoped Tool Call Deduplication: Stop Your Agent From Doing the Same Thing Twice
The agent is looping. It called search_documents(query="Q3 revenue") in step 2. Now it is step 7 and...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
tool-arg-fuzzy-rs: Fuzzy Match LLM Enum Args to Valid Values in Rust
A Rust crate that cascades exact, case-insensitive, prefix, and substring matches to recover from LL...
#hermeschallenge#ai#rust#agents
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Mukunda Rao Katta3d ago • 4 min read
My RAG system slowly got worse for three months and nobody noticed.
A composable drift detector for RAG and agent systems. Five orthogonal dimensions, one DriftReport, ...
#hermeschallenge#ai#rag#python
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Mukunda Rao Katta3d ago • 4 min read
Single-Flight LLM Calls: Coalesce 50 Concurrent Identical Requests Into One API Call
Fifty users submitted their daily summaries at 9:00 AM. All fifty requests ask the same follow-up...
#hermeschallenge#ai#python#agents
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Mukunda Rao Katta3d ago • 5 min read
llm-budget-window: Per-Minute and Per-Hour Token Caps That Actually Work
A Rust crate with sliding time windows for token and USD budgets. Blocks before the expensive call, ...
#hermeschallenge#ai#rust#agents
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Mukunda Rao Katta3d ago • 5 min read
llm-circuit-breaker-py: Open the Circuit Before Your Agent Hammers a Down Provider
A Python port of llm-circuit-breaker with Closed/Open/HalfOpen states, thread-safe, sync and async s...
#hermeschallenge#ai#python#agents
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