The credit layer for the agentic economy

The credit layerfor agentic payments.

x402 proves agents got paid. Nothing proves they were worth paying. Assay measures what every paid endpoint actually delivers — then bonds it, so agents get recourse when it doesn't.

Browse the reliability index Bond an endpoint

Private beta · Q4 2026

Built on the x402 rail used byCloudflareCoinbaseVisaMastercardAWSGoogleStripeShopify

$1.1MReal 30-day x402 volume

~30¢Average per call

49→95%Volume in calls over $1

0Recourse when calls fail

The gap

The chain proves a payment settled. Nothing proves anything came back.

Agents pay first and hope. If an endpoint takes the money and returns nothing, times out, or returns garbage, that's the agent's loss. Fine at $0.003. Useless at $5.

Working now

Low-value, failure-tolerant

Crawl access, API calls, MCP tools. Standardised, cheap, easy to retry.

Blocked

Everything worth more

Inference routing, agent-to-agent delegation, data purchases, commerce. All need recourse. None have it.

How Assay works

Measure. Bond. Underwrite.

Measure

Probers pay endpoints and record what came back. The results are published free as the reliability index for agent services.

Bond

Endpoints stake to earn guaranteed-delivery status. Slashed on non-delivery, off-spec response, or overcharge — every trigger mechanically decidable.

Underwrite

Capital supplies the bonds and earns the premium. Yield in USDC, from fees paid for a real service — single-digit to low-teens APY, net of losses.

The reliability index

Know what an endpoint delivers before your agent pays it.

The reliability index for x402 services. We pay endpoints, record what came back, and publish it — free. Bonded endpoints refund your agent when they don't deliver.

Sample data

Illustrative x402 endpoint reliability data, not a live feed.
Endpoint	Category	Delivered · 30d	p99	Price	Failure prob.	Status
infer.routerhub.ai/v1/chat	Inference	99.4%99.4%	820ms	$0.42	0.6%	Bonded
data.tickstream.io/quotes	Data	99.1%99.1%	140ms	$1.20	0.9%	Bonded
mcp.ledgerlens.xyz/tools	MCP tool	97.8%97.8%	310ms	$0.03	2.2%	Probing
crawl.pagevault.io/fetch	Crawl	96.2%96.2%	1.2s	$0.004	3.8%	Probing
gen.pixelforge.run/image	Inference	91.5%91.5%	4.1s	$0.28	7.1%	Watch
agent.dealdesk.app/quote	Delegation	84.0%84.0%	6.9s	$5.00	12.4%	Watch

Sample data. New endpoints start at a pessimistic ~7% failure prior and earn their way down.6 endpoints

How we price risk

Delivery history can't be built backwards.
We've been watching.

Failure probability

Beta-Binomial posterior with a pessimistic prior. Nobody starts at 0%.

Leading indicators

Rising p99 latency flags timeouts before they happen; value-split failure rates catch selective defection.

Concentration

300 endpoints in one cloud region is one risk, not 300. Hard caps enforced.

Stake sizing

Anchored to peak daily revenue, so nobody builds history small and defects big.

Roadmap

Index first. Underwrite second.
Capitalise last.

Months 0–6 · Now

No token

Probes run in-house, published free.

Months 6–12

Permissioned probers

Paid operators, settled in USDC.

Month 12+

Decentralise

Staked probers, auto-slashed.

For endpoints

Earn guaranteed-delivery status

Stake a bond, get the badge agents route to. Premium ≈ expected loss × (1 + load), paid in USDC.

Bond an endpoint

For underwriters

Yield from a real service

Supply bond capital, earn the premium. Single-digit to low-teens APY, net of losses — unglamorous, and still there in two years.

Join the waitlist

Join the agentic economy

Verified earnings.
Verified reliability.

Get the index as it grows — new endpoints, loss curves, and the first bonded services.

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