S4 Ledger | SDK Playground

SDK Functions — click to load & run

hash_record()

SHA-256 hash

anchor_record()

Anchor to XRPL

verify_record()

Verify integrity

batch_anchor()

Multi-record batch

get_metrics()

Network stats

list_records()

All anchored

get_record_types()

Defense record catalog

ils_analysis()

ILS gap analysis

check_dmsms()

Obsolescence risk

calculate_readiness()

Ao/Ai MIL-STD

calculate_roi()

ROI projection

estimate_lifecycle_cost()

Total ownership cost

analyze_supply_chain_risk()

AI risk scoring

predict_maintenance()

AI failure prediction

calculate_compliance()

MIL-STD / FAR

generate_audit_report()

One-click audit

get_action_items()

Task queue

search_documents()

Standards library

store_in_vault()

Encrypted vault

analyze_submission()

Submissions Hub

scan_sbom()

SBOM Scanner

Code Editor

Python

Calls live API at /api/*

Output

Select an SDK function above to load code, then click "Run" to execute...

How It Works

Click any function box above to load & auto-run

Select a record type — classification auto-detected

Edit code freely, then Run

Anchored records appear on Metrics & Transactions

21 SDK functions • 54+ Navy record types • All branches

View Full SDK on GitHub →

How S4 Ledger SDK Works — Technical Details

What's real: Every API call in this playground hits the live S4 Ledger REST API. Hashes are computed server-side via SHA-256. Anchor operations create real XRPL transactions on mainnet. The SDK code shown here is identical to what runs when installed via pip install s4-ledger-sdk.

What's demo: The $SLS token fee (0.01 per anchor) is live on mainnet. Each anchor costs 0.01 SLS, paid from the operational wallet to the treasury.

How S4 Ledger saves money here: Building custom integrations between logistics systems and blockchain typically costs $200K–$500K and takes 6–12 months. The S4 SDK provides a 3-line integration that works in minutes — reducing integration costs by 95%+ and enabling small contractors to adopt blockchain verification without dedicated engineering teams.

Production mode: Install via pip, configure with your API key, and integrate directly into existing Python workflows — CI/CD pipelines, ERP plugins, maintenance management systems, or batch processing scripts. The SDK handles all XRPL wallet management, transaction construction, and retry logic automatically.

Install the SDK

pip install s4-ledger-sdk

Requires Python 3.8+ and xrpl-py

SDK Quick Reference

Core Anchoring & Verification 6

hash_record()SHA-256 hash of record

anchor_record()Anchor hash to XRPL

verify_record()Verify against anchored hash

batch_anchor()Anchor multiple records

list_records()List all anchored records

get_record_types()Browse defense record types

ILS Analysis Tools 4

check_dmsms()Obsolescence risk analysis

calculate_readiness()Ao/Ai per MIL-STD-1390D

calculate_compliance()MIL-STD / FAR scoring

get_action_items()Task queue with severity

AI & Risk Intelligence 2

analyze_supply_chain_risk()AI risk scoring (35+ platforms)

predict_maintenance()AI predictive maintenance

Finance & Lifecycle 2

calculate_roi()S4 Ledger ROI projection

estimate_lifecycle_cost()Total ownership cost (DoD 5000.73)

Documents & Reporting 5

generate_audit_report()One-click audit reports (6 types)

analyze_submission()Submissions hub engine

scan_sbom()SBOM scanner & risk scan

search_documents()Defense standards library

store_in_vault()Encrypted audit vault storage

Live API Endpoints

Core Anchoring & Verification 5

/api/hashPOST — compute SHA-256

/api/anchorPOST — anchor record

/api/metricsGET — dashboard data

/api/transactionsGET — recent activity

/api/record-typesGET — all defense types

ILS Analysis Tools 4

/api/dmsmsPOST — obsolescence check

/api/readinessPOST — readiness calc

/api/compliancePOST — compliance scoring

/api/action-itemsGET — action item queue

AI & Risk Intelligence 2

/api/supply-chain-riskPOST — AI risk analysis

/api/predictive-maintenancePOST — failure prediction

Finance & Lifecycle 2

/api/roiPOST — ROI analysis

/api/lifecyclePOST — lifecycle cost

Documents & Reporting 5

/api/audit-reportsPOST — audit report gen

/api/iliePOST — submissions hub

/api/sbomPOST — SBOM scan & risk

/api/doc-libraryGET — standards lookup