Contribute or pay
Senlay is reciprocal. Attach a sensor and receive verified reasoning across the whole network — not just your own readings — at no cost. Systems that act on the answer but will never install hardware pay cash instead.
SmartSurf station pilots are handled through SmartSurf pilot pricing; this page is for Senlay's contributor network and API/evidence-engine access.
The closest paid buyer is a system that acts
Drone and BVLOS operators, robotics fleets, lifting and construction, parametric insurers, and marine operations need the answer, not the network, and will never contribute hardware. Contributors — stations, schools, marinas, sensor-network operators — pay in data and are coverage, not revenue.
RECIPROCAL — PILOT ACCESS
Contribute a Sensor
$0 forever
Attach an instrument, receive the network back.
- No cash, no token — pay in data, not money
- Verified reasoning across every instrument around your station, not just your own readings
- Open protocol, JavaScript SDK, MQTT bridge, edge gateway (Apache 2.0)
- HMAC-signed observation ingestion, live in production today
- Station trust builds on observed behavior, not paperwork
- For operators with existing fleets: reciprocal integration, see below
Connect a station
Cash tiers below are for consumers — systems that call the API without contributing hardware.
Free Developer
$0 /month
Available now. Verify one workflow in minutes.
- 100 API calls/day, shared across account keys
- 21 source families where available
- Full spot-level verification response
- Structured verification output with source provenance
- Source, freshness, and confidence metadata
- Basic risk and hazard context
- Calculated insights and hazard flags
- System health monitoring
- Community support
Create free API key — test one coordinate in 60 seconds
AFTER LAUNCH
Outdoor App Developer
$29 /month
For developers shipping prototypes, agents, and early products.
- 10,000 API calls/day, shared across account keys
- Everything in Free
- Higher rate limits
- Batch location queries
- Saved locations and reusable prompts
- Source/freshness/confidence details
- risk_event preview for alert workflows
- Email support
Get Free Key (Pro later)
PILOT
Safety Pilot
From $199 /month
For teams validating operational risk workflows.
- 10,000 API calls/day by default; custom pilot limits by agreement
- Everything in Pro
- Team API keys and usage controls
- Pilot support for SmartSurf, drone, outdoor, agriculture, marine, or safety workflows
- risk_event tuning, cooldowns, and fallback behavior
- Custom limits and private sensor options
Talk to Senlay
PILOT
Outdoor Verification
Custom
For production, safety, and high-volume deployments.
- Custom volume and rate limits
- Dedicated support and pilot planning
- Private sensor and data-source integration
- Domain pack development for your workflow
- Audit, monitoring, and evidence retention planning
- SLA options after production validation
Discuss Pilot
Questions
When will paid plans launch?
We're in open beta while the API is validated with real developer and pilot usage. Paid plans will launch when limits, support expectations, and production reliability are clear.
Will free tier always exist?
Yes. A free tier with reasonable limits will remain available so developers can test spot-level verification before buying.
What counts as an API call?
One authenticated verification request to /api/v1/pwm counts as one account request, including cache hits. Daily usage is shared across all active API keys on the account. The endpoint returns available live and model data, source/freshness metadata, confidence signals, interpretation, uncertainty, and structured evidence for software or AI workflows.
Can I use Senlay commercially during beta?
Yes, for prototypes and pilots. Production and safety-critical deployments require pilot discussion, reliability expectations, fallback behavior, and domain validation.
Who pays first?
Contributors do not pay cash — a sensor is the payment, and what they receive back is coverage, not revenue. The closest paid buyer is a system that acts on the answer and will never install hardware: drone operators, robotics fleets, lifting and construction, parametric insurers, marine operations, SmartSurf schools and stations, and IoT teams that need to explain a physical-world alert. The two sides do not compete for the same budget.
If I contribute a sensor, do I still need a paid plan?
No. A contributed station receives verified reasoning across the whole network in return for its data — that exchange is separate from, and does not require, a paid API tier. Operators who also want to consume the API for a system that acts (not just read back their own station's context) can combine both.
Need higher limits, risk_event support, or pilot access?
If you are evaluating Senlay for SmartSurf-style safety, drone, outdoor work, agriculture, marine, SAR, or IoT software, contact us for beta limits, risk-event design, fallback behavior, pilot support, and launch pricing.