Templates Library

Ready-to-deploy state contracts — the building blocks (protocols) pre-composed into running machines. Each template is a complete contract definition: states, transitions, the operators each transition fires, and (where it's autonomous) the triggers that drive it. Deploy one onto your machine in a single call and it starts running on your clock, every fire Zeqond-stamped onto your entangled state.

Browse the catalogue here, deploy from the Templates tab of the Contract IDE, or fetch any one over HTTP:

curl -sS https://zeqsdk.com/api/contracts/templates              # list all
curl -sS https://zeqsdk.com/api/contracts/templates/categories   # categories + counts
curl -sS https://zeqsdk.com/api/contracts/templates/<id>         # one, full definition

Every template here is generated from the live catalogue (GET /api/contracts/templates), so the docs track the framework instead of drifting from it. To deploy, POST /api/contracts/templates/<id>/deploy with { "slug": "<your-machine>" } (auth: session) — see any template page for the exact call.

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Mechanics

Template	What it does
Force Threshold Alarm	NM19 (F = ma) on every reading: idle → watching → alert when computed force crosses your limit. The classic structural-load watchdog.
Harmonic Fatigue Watch	NM30 (F = −kx, x(t) = A·cos(ωt+φ)) tracks oscillation amplitude: nominal → worn → failing as displacement grows past tolerances.
Orbital Decay Monitor	NM21 (F = G·m₁m₂/r²) per pass: stable_orbit → decaying → deorbit_planned as perigee altitude falls through declared floors.
Energy Conservation Auditor	NM23 + NM24 + NM25 (KE + PE = const): balanced → violation when a system's energy books stop closing — the physics-grade sensor sanity check.
Momentum Surge Detector	NM26 (p = mv) + NM27 (Σp_init = Σp_final): flags momentum-balance breaks across a measured boundary — collisions, leaks, slippage.

Quantum

Template	What it does
Eigenvalue Drift Monitor	QM5 (Ĥ|ψ⟩ = E|ψ⟩) recomputed per window: calibrated → drifting → recalibrate when the measured energy level walks off the reference.
Tunneling Probability Gate	QM8 (T ∝ e^{−2∫√(2m(V−E))/ℏ² dx}): the gate opens only when computed transmission probability clears your threshold.
Photon Budget Counter	QM10 (E = hν): integrates photon energy over a window — counting → saturated when the dose budget for a sample or sensor is spent.
Half-Life Inventory	TM1 time-projection over decay law: stocked → monitor → dispose as remaining activity falls through regulatory thresholds.

Relativity

Template	What it does
Schwarzschild Safety Check	GR37 (r_s = 2GM/c²) on every mass estimate: safe → critical when an object's radius approaches its own Schwarzschild radius. The honest compactness monitor.
Time Dilation Logger	GR35 (Δt = Δt₀√(1 − 2GM/rc² − v²/c²)): syncing → dilated — computes and chain-logs the correction every window. GPS-grade honesty.
Redshift Classifier	GR41 (z = (λ_obs − λ_emit)/λ_emit): classifies incoming spectra into local → significant → high-z bins, every classification proven on-chain.

Thermo & Information

Template	What it does
Entropy Anomaly Detector	CS47 (E = −Σ p·log p) over your event stream: baseline → anomalous when Shannon entropy jumps — the physics-grade weirdness detector.
Landauer Energy Audit	LZ1 (E = k_B·T·ln2 × bits_erased): converts a workload's bit erasures into joules — within_budget → over_budget against your thermal envelope.

Biophysics

Template	What it does
HRV Readiness Monitor	PSI96 oscillation + CS47 entropy over RR-intervals: rested → strained → overtrained, with every readiness call proven against the actual math.

Operations

Template	What it does
SLA Monitor	Latency/availability windows against declared SLOs: healthy → breach → escalated, every breach chain-stamped at the Zeqond it happened.
Data Pipeline	Ingest → validate → publish with failure branches; every stage transition is an audited, Zeqond-stamped fact.
Device Lifecycle	Registered → active → maintenance → retired for any fleet, with TM1 time-based service windows and a tamper-evident service history.

Foundations

Template	What it does
Scheduled Compute (Heartbeat)	The automation primitive — a self-firing transition on the HulyaPulse cadence. running → running every 60 Zeqonds (swap every_zeqonds for a cron expression like
Threshold Monitor (Generic)	Domain-agnostic watchdog. Watches a stream of reading events; KO42 evaluates the windowed average each fire. normal → breached when the average over the last
Oracle Feed (External Ingest)	Brings the outside world in. Every 60 Zeqonds it calls your registered oracle external protocol, binds the response, runs KO42, and emits oracle_datum — a s
Approval Workflow (N-of-M)	Multi-party sign-off as a contract. pending → approved once N approve events land (default 3), or → rejected the moment a single reject event arrives. Every
Timelock Release Gate	A generic release gate — no funds, no escrow. held → released once N sign events land (default 2), or → expired when a one_shot deadline passes. Set at_unix
Supply-Chain Provenance	Tamper-evident custody chain. Each handoff event advances the chain and emits custody_changed; a delivered event closes it. Every hop is Zeqond-stamped on
Telemetry Rollup (IoT)	Fleet telemetry aggregator. Sums a metric across every telemetry event in a rolling window; collecting → flagged when the windowed total crosses your quota, a
Rate Limiter (Windowed)	A windowed rate gate. allowing → limiting when more than threshold request events land inside the rolling window (default 100 / 60 Zeqonds), and back when t
Subscription / Recurring Billing	A subscription lifecycle on a cron clock. active emits invoice_due on its billing schedule (default the 1st of each month); a payment_failed event moves it
Attestation / Notary Timestamp	A perpetual notary. Each notarize event runs KO42 through compute → prove → verify and emits attested — binding the submission to the Zeqond it arrived and

Aerospace

Template	What it does
Hohmann Transfer Planner	Minimum-fuel orbit raise: fires the first burn only when phase angle and Δv budget align, then sequences coast and circularisation. Every burn proven on-chain.
Re-entry Corridor Guard	Holds a capsule's entry angle inside the survivable corridor: nominal → shallow/steep warnings → abort-to-orbit if the flight-path angle leaves bounds.

Structural Engineering

Template	What it does
Von Mises Yield Gate	STRESS_VON_MISES on live load data: safe → yielding → plastic as the equivalent stress approaches the material's yield strength. The structural-integrity tripwi
Beam Deflection Limit	BEAM_DEFLECTION vs span/360 serviceability limit: within_limit → excessive, with a buckling escalation when the load nears the critical buckling threshold.
Fatigue Crack Inspection Scheduler	Paris-law crack growth: tracks crack length per load cycle and schedules inspection before it reaches critical size. The model behind aircraft & bridge maintena

Material Science

Template	What it does
Alloy Spec Compliance	ALLOY_MIXTURE checks a melt's composition against spec bands: in_spec → out_of_spec → rejected. Every heat's certificate is chain-stamped — provable provenance.
Thermal Expansion Mismatch Guard	THERMAL_EXPANSION on a bonded joint: bonded → stressed → delaminating as differential expansion across two materials exceeds the interface tolerance.
Vickers Hardness QA	HARDNESS_VICKERS acceptance per part: pass → fail against the heat-treat spec window, with statistical-drift escalation across a batch.

Fluid Dynamics

Template	What it does
Cavitation Onset Guard	Tracks local pressure vs vapour pressure: nominal → cavitating before bubble collapse pits the impeller. Protects pumps, propellers, and valves.
Turbulence Transition Monitor	Reynolds-number tracking: laminar → transitional → turbulent. Drives drag models, mixing control, and flow-assurance decisions in real time.

Seismology

Template	What it does
Earthquake Early Warning	P-wave detected → S-wave imminent → ALERT in the seconds-long window before destructive shaking arrives. Triggers automated shutoffs and public alerts.

Geophysics

Template	What it does
Landslide Slope-Stability Watch	Factor-of-safety on a monitored slope (rainfall + pore pressure + displacement): stable → creeping → imminent. Chain-stamped so warnings are defensible.
Groundwater Drawdown Guard	Aquifer drawdown (Theis): sustainable → over-extraction → critical as the water table falls past recharge-balanced limits. Protects aquifers from collapse.
Volcanic Tremor Escalation	Harmonic-tremor energy + deformation: quiet → unrest → eruption-warning. Multi-signal escalation with a tamper-evident timeline for civil-protection decisions.

Chemical Process Safety

Template	What it does
Reaction Runaway Guard	Arrhenius reaction rate vs the reactor's heat-removal capacity: controlled → accelerating → RUNAWAY with automatic quench. The model behind preventing real ther
Reaction Completion Gate	Tracks conversion via reaction kinetics: reacting → complete when conversion crosses the target, with a stall branch if the rate flatlines early.

Energy & Grid

Template	What it does
Grid Frequency Stability	Monitors grid frequency against the nominal band: nominal → deviation → load-shed before an under-frequency event cascades into a blackout.
Carnot Efficiency Audit	THERMO_CARNOT ceiling vs measured efficiency: efficient → degraded as a heat engine's real efficiency drifts below its tier of the Carnot limit. Catches fouling
Solar Yield Optimizer	SOLAR_OPTIMIZE on irradiance + temperature: tracking → curtail when output exceeds inverter/grid limits, derate on over-temperature. Maximises captured energy s
Transformer Overload Guard	POWER_LOSS + thermal model: normal → overloaded → trip as winding temperature and loss exceed the unit's rating. Extends asset life, prevents fires.

Nuclear

Template	What it does
Reactor Criticality Margin	Tracks effective multiplication factor k_eff: subcritical → critical → supercritical-warning with automatic scram. The core reactivity-safety contract.
Decay-Heat Removal Watch	Post-shutdown decay heat vs cooling capacity: adequate → marginal → insufficient. The Fukushima-class failure mode, made continuously provable.

Medical

Template	What it does
Infusion Safety Monitor	Pharmacokinetic steady-state: sub-therapeutic → therapeutic → TOXIC as predicted plasma concentration crosses the therapeutic window. Guards continuous-infusion
Renal Dose Adjuster	MED_GFR + MED_CLEARANCE: normal → reduce-dose → hold as estimated renal function falls, preventing accumulation of renally-cleared drugs.
Cardiac Rhythm Watch	NM30 (x(t)=A·cos(ωt+φ)) tracks beat-to-beat rate excursion: sinus → arrhythmia → alert when the rhythm leaves its declared envelope for too many beats. A physic

Neuroscience

Template	What it does
Seizure-Onset Detector	EEG band-power + entropy: baseline → pre-ictal → ictal, firing an alert in the pre-ictal window so responsive therapy or carers can act.

Biotech

Template	What it does
PCR Amplification Cycler	PCR_AMPLIFICATION tracks copy number per cycle: amplifying → plateau → done at target yield, with a no-amplification failure branch. Chain-logged for assay prov
Bioreactor Growth Control	CELL_GROWTH + ENZYME_ACTIVITY: lag → exponential → harvest, feeding and harvesting at the right density. The backbone of cultured production.
Protein Fold Stability Gate	PROTEIN_FOLD free-energy: folded → unfolding as ΔG crosses the stability threshold under temperature/pH stress. De-risks formulation and storage.

Robotics

Template	What it does
Joint Torque Safety	TORQUE_DYNAMICS per joint: within_limit → over-torque stop, protecting actuators and anything (or anyone) the arm contacts.
Trajectory Feasibility Gate	TRAJECTORY_PLANNING + INVERSE_KINEMATICS: planned → infeasible if a path violates reach, velocity, or collision limits before it ever executes.

Control Systems

Template	What it does
Control-Loop Stability Margin	CT phase/gain margin tracking: stable → marginal → unstable as a closed loop's margins erode (sensor lag, plant drift). Catches oscillation before it runs away.

Signal Processing

Template	What it does
SNR Degradation Monitor	Signal-to-noise tracking on a live channel: clean → degraded → lost, with chain-stamped link-budget events for telecom and sensing.

Climate Science

Template	What it does
Carbon Budget Tracker	CLIM_RADIATIVE_FORCING against a remaining-budget threshold: on_track → over_budget, with chain-stamped accounting that auditors can verify independently.

Environmental

Template	What it does
Air Quality Escalation	AIR_QUALITY_INDEX bands: good → unhealthy → hazardous, driving public advisories and automated ventilation/industrial-curtailment responses.
Water Contamination Gate	WATER_QUALITY composite: potable → advisory → unsafe, holding distribution until contaminant indices return below limits. Provable public-health record.

Finance & Risk

Template	What it does
Value-at-Risk Breach Monitor	VAR_HISTORICAL + PORTFOLIO_VARIANCE: within_limit → breach → de-risk as the portfolio's VaR crosses the desk's risk limit. Every breach time-stamped on-chain fo

Photonics

Template	What it does
Laser Gain Threshold Gate	PHOT_GAIN_THRESHOLD: below_threshold → lasing → over-drive protection as cavity gain crosses the lasing threshold and then the damage limit.

Acoustics

Template	What it does
Noise Exposure Dose Tracker	Integrates A-weighted sound exposure over a shift: safe → approaching-limit → over-limit per OSHA/EU dose rules. Hearing-protection compliance, provable per wor

Electromagnetism

Template	What it does
EM Field Exposure Safety	EM field-strength vs ICNIRP exposure limits: safe → caution → over-limit near high-power RF / magnets. Worker-safety record that holds up to inspection.

Network Science

Template	What it does
Cascade Failure Risk	NET_BETWEENNESS + PageRank load: resilient → fragile → cascade-risk as load concentrates on critical nodes. For power grids, supply chains, and infra networks.

Astrophysics

Template	What it does
Exoplanet Transit Detector	Light-curve dip detection: baseline → candidate-transit → confirmed as periodic dimming clears depth and periodicity thresholds. Survey-pipeline triage, proven

Plasma Physics

Template	What it does
Fusion Confinement Monitor	Triple-product confinement vs ignition criterion: subignition → confined → disruption-risk. The control surface for tokamak / stellarator shots.

Condensed Matter

Template	What it does
Superconductor Tc Guard	Critical-temperature / critical-current margin: superconducting → approaching-quench → normal as a magnet nears its quench boundary. Protects MRI, fusion, and a

Atmospheric Science

Template	What it does
Storm Intensification Watch	Tracks cyclone intensification rate from pressure + SST: tracked → intensifying → rapid-intensification alert. Drives evacuation lead time when it matters most.

Thermodynamics

Template	What it does
Heat Exchanger Fouling Monitor	THERMO_HEAT_TRANSFER effectiveness decline: clean → fouling → clean-now as the heat-transfer coefficient drops below the cleaning threshold. Schedules maintenan

Bioinformatics

Template	What it does
Variant Significance Gate	BIO_BLAST_EVALUE: screening → significant-hit as alignment E-value clears the significance threshold. Flags meaningful matches in genomic search pipelines.

Optics

Template	What it does
Diffraction Limit Gate	Rayleigh resolution check: resolved → unresolved as feature spacing falls below the diffraction limit for the system's NA and wavelength. Imaging / metrology QA

Mechanical Engineering

Template	What it does
Pressure Vessel FEA Gate	FEA displacement + stress analysis vs ASME-style allowables: within_code → exceedance → derate. Continuous code-compliance for pressure equipment.

Atomic Physics

Template	What it does
Spectral Line Classifier	Identifies elements from emission/absorption lines: scanning → identified → flagged when an unexpected line appears. Real-time spectroscopy with a provable dete

Cryptography

Template	What it does
RNG Entropy Health Gate	CRYPTO_ENTROPY on a random source: healthy → degraded → fail, holding key generation when entropy drops below the security floor. Prevents weak-key disasters.

Statistical Mechanics

Template	What it does
Phase Transition Detector	Order-parameter + susceptibility: ordered → critical → disordered as a system crosses a phase boundary. From material processing to network percolation.

Network & Comms

Template	What it does
Traffic Entropy Anomaly	CS47 (Shannon entropy, E=−∑p·log p) per window: nominal → anomalous when source/destination entropy collapses below the floor (flood/DDoS uniformity) → flagged

Gaming & Simulation

Template	What it does
Game Physics Anti-Cheat	NM27 (Σp conserved) + NM23 (KE=½mv²): valid → suspect when a player's momentum books stop closing, → flagged when kinetic energy exceeds the engine cap. Catches

Aerospace & Defense

Template	What it does
Ballistic Intercept Window	NM21 (F=G·m₁m₂/r²) + NM28 (L=r×p): tracking → window_open as closing range crosses the intercept envelope, → committed when intercept confidence clears threshol

Agriculture & IoT

Template	What it does
Irrigation Pressure Guard	NM24 (PE=mgh, water-column head): nominal → low_pressure when line head drops below the minimum, → fault when the pressure drop crosses the leak/burst threshold

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Next

• State Contracts — the contract model: conditions, triggers, pre/post actions, lifecycle, verification.
• Contract IDE — Generate / Templates / Expert modes; the Saved tab is the home for everything you deploy.
• Protocols — the named building blocks a transition composes.
• Operators — the verb each transition fires through the master equation.