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.
npx skills add hannesill/m4 --skill mimic-eicu-mappinggit clone --depth 1 https://github.com/hannesill/m4Wrote 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.
[](https://agentmods.dev/skills/hannesill/m4/mimic-eicu-mapping)<a href="https://agentmods.dev/skills/hannesill/m4/mimic-eicu-mapping"><img src="https://agentmods.dev/badge/skills/hannesill/m4/mimic-eicu-mapping.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.01515 |
| Opus 5 | $0.00019 | $0.00758 |
| Sonnet 5 | $0.00008 | $0.00303 |
| Haiku 4.5 | $0.00004 | $0.00152 |
Grade A, and why
mimic-eicu-mapping 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MIMIC-IV to eICU Mapping
This skill maps equivalent tables, columns, and concepts between MIMIC-IV and eICU databases to enable cross-database research and external validation.
When to Use This Skill
- External validation of MIMIC-IV models on eICU
- Multi-center studies combining both databases
- Understanding structural differences
- Translating queries between databases
Database Overview
| Characteristic | MIMIC-IV | eICU |
|---|---|---|
| Institution | Beth Israel Deaconess (single center) | 208 hospitals (multi-center) |
| Patients | ~300,000 admissions | ~200,000 patients |
| Time Period | 2008-2019 | 2014-2015 |
| ICU Types | All ICU types | All ICU types |
| Geography | Boston, MA | United States (nationwide) |
Identifier Mapping
| Concept | MIMIC-IV | eICU |
|---|---|---|
| Patient ID | subject_id | uniquepid |
| Hospital Admission | hadm_id | patienthealthsystemstayid |
| ICU Stay | stay_id | patientunitstayid |
| Hospital ID | N/A (single center) | hospitalid |
| Unit Visit | icustay_seq | unitvisitnumber |
Core Table Mapping
Patient Demographics
| MIMIC-IV | eICU | Notes |
|---|---|---|
| mimiciv_hosp.patients | patient | Base demographics |
| mimiciv_hosp.admissions | patient | Admission info combined |
| mimiciv_icu.icustays | patient | ICU stay info in patient table |
| mimiciv_derived.icustay_detail | icustay_detail (concept) | Derived convenience table |
Vital Signs
| MIMIC-IV | eICU | Notes |
|---|---|---|
| mimiciv_derived.vitalsign | vitalperiodic, vitalaperiodic | eICU splits periodic/aperiodic |
| mimiciv_icu.chartevents | nursecharting | Raw charted values |
Laboratory Values
| MIMIC-IV | eICU | Notes |
|---|---|---|
| mimiciv_hosp.labevents | lab | Different labname conventions |
| mimiciv_derived.chemistry | pivoted_lab (concept) | Derived/pivoted |
| mimiciv_derived.complete_blood_count | pivoted_lab (concept) |
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.
- 7d ago First seen · 200 lines · 39 tokens per session scan A 9db5c6fde7d2
mimic-eicu-mapping is a skill published in the GitHub repository hannesill/m4 (43 stars, last pushed 1mo ago), licensed MIT. It adds 39 tokens to every session and 1,515 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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