sirs-criteria

sirs-criteria is a skill for Claude Code, Codex from hannesill/m4. It costs 43 tokens per session (1,114 once invoked), scanned A, original, MIT.

A guide for calculating SIRS, a historical score for signs of the body's inflammatory response. It explains the criteria and notes that SIRS was once used in sepsis assessment, while newer Sepsis-3 guidance uses SOFA instead.

In plain words
What is it for?
Use it to calculate SIRS criteria for ICU patients, compare older and newer sepsis definitions, or study inflammation from infectious and non-infectious causes.
Why use it?
It provides a consistent way to assess SIRS for research, historical comparisons, or older quality measures. It also prevents treating SIRS as the current definition of sepsis.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to calculate SIRS criteria for ICU patients, compare older and newer sepsis definitions, or study inflammation from infectious and non-infectious causes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hannesill/m4/sirs-criteria
View source ↗ hannesill/m4
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add hannesill/m4 --skill sirs-criteria
Clone the repo
git clone --depth 1 https://github.com/hannesill/m4

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sirs-criteria

README.md
[![agentmods](https://agentmods.dev/badge/skills/hannesill/m4/sirs-criteria/github.svg)](https://agentmods.dev/skills/hannesill/m4/sirs-criteria)
Your own site
<a href="https://agentmods.dev/skills/hannesill/m4/sirs-criteria"><img src="https://agentmods.dev/badge/skills/hannesill/m4/sirs-criteria/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sirs-criteria

Your own site · 80×15
<a href="https://agentmods.dev/skills/hannesill/m4/sirs-criteria"><img src="https://agentmods.dev/badge/skills/hannesill/m4/sirs-criteria.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,114 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.01114
Opus 5 $0.00022 $0.00557
Sonnet 5 $0.00009 $0.00223
Haiku 4.5 $0.00004 $0.00111

Measured 11d ago against content hash fd120f62a289, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

sirs-criteria scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

benchmark/tasks/sirs/mimic-sirs-24h-raw/skills/sirs-criteria/SKILL.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SIRS Criteria Calculation

The Systemic Inflammatory Response Syndrome (SIRS) criteria quantify the body's inflammatory response to insult — both infectious and non-infectious (trauma, burns, pancreatitis, major surgery). Defined by the 1992 ACCP/SCCM Consensus Conference, SIRS was historically used as part of the sepsis definition (SIRS >= 2 + suspected infection).

The 2016 SCCM Sepsis-3 consensus removed SIRS from the sepsis definition, replacing it with SOFA-based criteria (SOFA >= 2 + suspected infection). The rationale: SIRS criteria are overly sensitive and poorly specific for the dysregulated host response that defines sepsis. SIRS remains relevant for research comparing definitions, studying inflammatory response independent of infection, and legacy quality metrics.

M4Bench Use

In M4Bench, target concept tables listed in the task configuration are removed or unavailable in the agent database. Use this skill as procedural guidance and derive the requested output from available source or intermediate tables; do not rely on a precomputed target table or bundled SQL script.

SIRS Criteria (0-4 Points)

Each criterion met = 1 point:

Criterion Threshold
Temperature < 36°C OR > 38°C
Heart Rate > 90 bpm
Respiratory RR > 20/min OR PaCO2 < 32 mmHg
WBC < 4 OR > 12 x10^9/L OR > 10% bands

SIRS Positive: >= 2 criteria met

Critical Implementation Notes

  1. Band Forms: The presence of > 10% immature neutrophils (bands) satisfies the WBC criterion, even if total WBC is within normal range. Band counts are variably documented across datasets.

  2. PaCO2 Source: Should use only arterial blood gas specimens. Venous or mixed venous PaCO2 is unreliable for this criterion. In MIMIC-IV, filter by specimen type 'ART.' using the specimen itemid 52033 in labevents.

  3. Time Window: The original definition does not specify a time window. Most ICU implementations use the first 24 hours, but the criteria can be applied to any clinically relevant window. Include measurements from 6 hours before ICU admission to capture ED data.

Read the full file on GitHub · 68 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 68 lines · 43 tokens per session scan A fd120f62a289

Subscribe to this mod's changes

sirs-criteria is a skill published in the GitHub repository hannesill/m4 (43 stars, last pushed 1mo ago), licensed MIT. It adds 43 tokens to every session and 1,114 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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