x402 Trust Score | ResolveBots Trust Index

x402 Trust Score rubric

How does your endpoint stack up?

The Trust Score rewards endpoints that agents can actually buy, parse, and reuse. It also preserves paid-but-failed attempts, because failures are market signal, not noise.

Payability

Does the x402 challenge complete with a real buyer wallet?

Fulfillment

Does payment return the promised resource, not just a 200?

Schema clarity

Can an agent infer the request and response shape without guesswork?

Client compatibility

Does it work across practical buyer clients, chains, and routing modes?

Value

Is the output useful relative to its price and stated purpose?

Failure honesty

Are charged errors, malformed payloads, stale listings, and retries visible?

Seller readiness

Are docs, examples, metadata, refunds, and support routes ready for agents?

Evidence

Receipts, sample outputs, redaction labels, and timestamped retest history.

Receipt system

Directories list endpoints. ResolveBots shows what happened after payment.

Every reviewed item gets a stable evidence page, a score, a payload treatment label, and a reusable social/video format. That is the brand system: proof first, then promotion.

Receipt card fields

Each public review card should carry the minimum facts an agent or builder needs before trusting a paid endpoint.

provider: Shimoverse Signals
price_paid: $0.0100
network: Base USDC
status: Paid output observed
payload: Redacted, but verified
score: 88/100

Open social and video templates

Public language

Use restrained proof language. Do not imply full settlement attestation unless the evidence tier supports it.

Every claim needs a receipt.We bought it first.Redacted, but verified.A 402 is not a product until fulfillment works.

Learn x402

How to read this guide.

x402 is a payment pattern for API calls and web resources: a server quotes a price, a wallet-equipped agent pays, and the resource returns. The protocol is promising; the market is messy. That is why evidence levels matter.

For buyers

Start with paid APIs/resources. Look for clear price, clean fulfillment, useful output, low latency, and JSON that an agent can consume without repair.

For sellers

Use seller tools and facilitators to expose one narrow paid route first. Then buy your own endpoint through an evaluator wallet before asking others to trust it.

For marketplaces

Directories are necessary but insufficient. Rankings need sample output, failure modes, price changes, and explicit proof of whether a payment merely advertised, returned output, or settled and fulfilled.

Highlighted reviewed items

Fresh one-cent agent resources bought and evaluated.

These are newly reviewed compact resources that stood out because they were built for direct agent use: small payloads, clear prices, clean flows, and proof links or source notes.

Rank	Best for	Resource	Paid price	Score
H1	Agents that need a low-cost, parseable sports forecast signal with proof links.	Shimoverse Signals England vs Argentina compact agent brief	$0.0100	88
H2	Agents that need a compact outright tournament prediction before deciding whether to buy deeper research.	Shimoverse Signals World Cup champion compact agent brief	$0.0100	87
H3	Agents that need cheap country-specific travel, tax, business, and localization facts before routing to authoritative sources.	GlobalRules Country facts API	$0.0050-$0.0100	91
H4	Agents testing x402 market-evidence purchases and seller-side preflight safety checks.	Observer BTC Evidence Service	$0.0100-$0.0500	82

Highlighted reviewed item / Paid output observed

Shimoverse Signals England vs Argentina compact agent brief

Useful compact forecast brief

Clear x402-native agent product: GET-only, one-cent Base USDC price, compact JSON, explicit market rules, confidence, issue/reveal timing, and public proof URLs. It deliberately withholds full rationale, which is appropriate for the cheaper agent brief but limits independent evaluation of reasoning quality. Public evidence is redacted because the seller instructs agents not to cache paid replies.

Best for: Agents that need a low-cost, parseable sports forecast signal with proof links.
Paid price: $0.0100
Observed sample: Returned a compact forecast JSON with answer, confidence, explicit market rules, issued/reveal times, and commitment/reveal URLs. ResolveBots does not republish the paid answer payload.

View evidence

Highlighted reviewed item / Paid output observed

Shimoverse Signals World Cup champion compact agent brief

Useful compact forecast brief

A clean low-cost forecast artifact for agents: concise answer, calibrated confidence, market rules, and proof URLs in parseable JSON. The main limitation is that the compact tier excludes evidence and countercase details, so it is best treated as a routing or alert signal rather than a full research packet. Public evidence is redacted because the seller instructs agents not to cache paid replies.

Best for: Agents that need a compact outright tournament prediction before deciding whether to buy deeper research.
Paid price: $0.0100
Observed sample: Returned a compact forecast JSON with answer, confidence, tournament-champion market rules, issued/reveal times, and commitment/reveal URLs. ResolveBots does not republish the paid answer payload.

View evidence

Highlighted reviewed item / Paid output observed

GlobalRules Country facts API

Strong structured country-facts bundle

GlobalRules is a good fit for agent workflows: clean GET endpoints, stable one-cent-or-less pricing, broad country coverage, and compact JSON for both full-country bundles and narrow field lookups. The strongest sign was the UAE business-readiness lookup returning null pillar scores with an explanatory source note instead of inventing data. Caveat: the seller describes the dataset as a prototype/sample and explicitly says high-stakes use should verify against official sources, so ResolveBots treats it as a strong routing/reference primitive rather than a final legal or tax authority.

Best for: Agents that need cheap country-specific travel, tax, business, and localization facts before routing to authoritative sources.
Paid price: $0.0050-$0.0100
Observed sample: ResolveBots bought five Base USDC calls: country discovery, Japan full facts, US VAT/sales-tax, UK plug details, and UAE B-READY coverage. The Japan bundle returned a broad 50-topic record with source URLs on several factual fields.

View evidence

Highlighted reviewed item / Paid output observed

Observer BTC Evidence Service

Clean paid x402 flow with useful evidence structure; product scope needs clearer labeling

Observer is a strong x402 integration sample: clear quickstart, free preview, public discovery metadata, OpenAPI, well-known x402 metadata, exact Base USDC pricing, and constrained buyer scripts. The paid flow worked cleanly from the ResolveBots BASE agent wallet. The trust caveat is product clarity rather than payment plumbing: the returned summary describes itself as a safe demo/mock readiness packet, and the ledger appears broader than BTC-only. ResolveBots treats it as a promising market-evidence test endpoint, not yet as a production-grade BTC decision feed.

Best for: Agents testing x402 market-evidence purchases and seller-side preflight safety checks.
Paid price: $0.0100-$0.0500
Observed sample: ResolveBots bought the $0.01 evidence summary and $0.05 state-change ledger. Both Base USDC payments completed and returned output. The summary was labeled mock_x402_readiness_v2_public_safe; the CSV ledger included LINK rows despite the Discord pitch framing it as BTC evidence.

View evidence

Best paid APIs/resources

The current top 10 paid resources.

These are resources we paid for successfully and can evaluate from actual output. This is the strongest public ranking section.

Rank	Best for	Resource	Paid price	Score
1	Cited research bundles and fact-grounded agent answers.	PayPerByte Evidence Pack Oracle	$0.1000	96
2	Local search without separate Google Maps credentials.	StableEnrich Google Places Text Search	$0.0200	94
3	Repairing malformed LLM output before an automation stalls.	x402Node JSON Repair	$0.0060	92
4	Security agents that need CVE/CISA context with provenance metadata.	PayPerByte Security Advisories Digest	$0.0500	91
5	Live web research and source discovery.	StableEnrich Exa Search	$0.0100	90
6	Agents choosing which chain to use before payment or swap execution.	x402Node Gas Compare	$0.0050	90
7	Pre-payment safety checks before an agent releases USDC.	PayPerByte Address Reputation Oracle	$0.1000	89
8	Developer agents checking language/runtime support risk.	PayPerByte Runtime EOL Attested Feed	$0.0200	88
9	Account-free private IPFS upload initialization.	Pinata Private File Upload Initializer	$0.0010	87
10	Crypto monitoring agents that can tolerate slower fulfillment.	911fund Alpha News	$0.0200	86