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 langcare/langcare-mcp-fhir --skill care-gap-identifiergit clone --depth 1 https://github.com/langcare/langcare-mcp-fhirWrote 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/langcare/langcare-mcp-fhir/care-gap-identifier)<a href="https://agentmods.dev/skills/langcare/langcare-mcp-fhir/care-gap-identifier"><img src="https://agentmods.dev/badge/skills/langcare/langcare-mcp-fhir/care-gap-identifier/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.
<a href="https://agentmods.dev/skills/langcare/langcare-mcp-fhir/care-gap-identifier"><img src="https://agentmods.dev/badge/skills/langcare/langcare-mcp-fhir/care-gap-identifier.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00106 | $0.04260 |
| Opus 5 | $0.00053 | $0.02130 |
| Sonnet 5 | $0.00021 | $0.00852 |
| Haiku 4.5 | $0.00011 | $0.00426 |
Grade A, and why
care-gap-identifier 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 12d 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 — 390 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Care Gap Identifier
Overview
Screen a patient for preventive care gaps based on USPSTF grade A and B recommendations. Query FHIR resources for prior screenings, immunizations, and relevant observations. Compare against age, sex, and risk-factor-adjusted intervals. Generate a prioritized list of overdue and upcoming preventive care items with patient-friendly descriptions.
FHIR Resources Used
| Resource | Purpose | Key Fields |
|---|---|---|
| Patient | Demographics (age, sex, risk factors) | birthDate, gender, extension (race/ethnicity) |
| Condition | Risk factors modifying screening criteria | code, clinicalStatus, onsetDateTime |
| Observation | Screening results (labs, vital signs) | code, valueQuantity, effectiveDateTime, status |
| Procedure | Completed screenings (colonoscopy, mammogram) | code, performedDateTime, status |
| Immunization | Vaccination history | vaccineCode, occurrenceDateTime, status |
| DiagnosticReport | Imaging results (mammogram, LDCT, DEXA) | code, effectiveDateTime, conclusion |
| MedicationStatement | Medications affecting screening (e.g., statins) | medicationCodeableConcept, status |
| FamilyMemberHistory | Family risk factors (cancer, CVD) | condition, relationship |
Instructions
Step 1: Retrieve Patient Demographics
Tool: fhir_read
resourceType: "Patient"
id: "[patient-id]"
Extract and calculate:
- Age from
birthDate - Sex from
gender(administrative gender; biological sex may differ) - Smoking status: check Observation with LOINC 72166-2
Tool: fhir_search
resourceType: "Observation"
queryParams: "patient=[patient-id]&code=72166-2&_sort=-date&_count=1"
Step 2: Retrieve Active Conditions (Risk Factors)
Tool: fhir_search
resourceType: "Condition"
queryParams: "patient=[patient-id]&clinical-status=active"
Identify risk-modifying conditions:
- Diabetes (SNOMED 44054006) -- affects statin, BP screening thresholds
- HIV (SNOMED 86406008) -- affects STI, cancer screening frequency
- Obesity (SNOMED 414916001) -- affects diabetes screening age
- Immunocompromised states -- affects immunization recommendations
- Family history of colorectal cancer -- earlier screening start
- BRCA carrier status -- different breast cancer screening
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 12d ago First seen · 390 lines · 106 tokens per session scan A ad439becd086
care-gap-identifier is a skill published in the GitHub repository langcare/langcare-mcp-fhir (55 stars, last pushed 5mo ago), licensed MIT. It adds 106 tokens to every session and 4,260 once invoked, about $0.0005 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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