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agent-stack

Six small, single-concern reliability libraries for production LLM agents — TypeScript, Python, and MCP servers. Zero runtime dependencies. Adopt one or all.

Zenodo DOIHF DOILicenseLive demo

Landing page:https://mukundakatta.github.io/agent-stack/Paper:Six Reliability Primitives for LLM Agents: An Artifact Pattern for Stackable, Single-Concern LibrariesHuggingFace Hub:mukunda1729/agent-stack

The six primitives

LibraryConcern
AgentFitToken-aware context-window fitting
AgentGuardNetwork egress allowlist for tool calls
AgentSnapSnapshot tests for tool-call traces
AgentVetTool-arg validation with retry hints
AgentCastStructured-output validate-and-retry for LLM JSON
AgentBudgetPer-run token + dollar caps

Each ships in three forms: TypeScript on npm, Python on PyPI, MCP-server variant.

Install

# TypeScript
npm i @mukundakatta/agentfit @mukundakatta/agentguard @mukundakatta/agentsnap \
@mukundakatta/agentvet @mukundakatta/agentcast @mukundakatta/agentbudget
# Python
pip install agentfit agentguard agentsnap agentvet agentcast agentbudget
// MCP server (Claude Desktop config)
{
"mcpServers": {
"agentvet": { "command": "npx", "args": ["-y", "@mukundakatta/agentvet-mcp"] },
"agentguard": { "command": "npx", "args": ["-y", "@mukundakatta/agentguard-mcp"] }
}
}

Read more

Find them all

GitHub topic search across the family: topic:agent-stack on user MukundaKatta — 24 repos pinned.

Citation

@misc{katta2026agentstack,
author = {Katta, Mukunda Rao},
title = {Six Reliability Primitives for LLM Agents: An Artifact Pattern for Stackable, Single-Concern Libraries},
year = {2026},
publisher = {Zenodo},
doi = {10.5281/zenodo.20074702},
url = {https://doi.org/10.5281/zenodo.20074702}
}

Local dev

To preview the landing page locally:

python3 -m http.server 8000
# open http://localhost:8000

License

MIT.

About

The Agent Reliability Stack: fit, guard, snap, vet, cast. One landing page for all 11 npm + 6 PyPI packages.

doi.org/10.5281/zenodo.20074702

Topics

agent-stackagentbudgetagentcastagentfitagentguardagentsagentsnapagentvetaianthropicllmmcpmonorepoopenaipythonreliabilitytypescriptzero-dependency

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