Practical x402 research for buyers and builders.
32 guides, indexes and field reports to help you choose services, control spend, connect clients and publish endpoints that agents can use.
The CDP Bazaar halved while the x402 corpus grew
Coinbase's x402 catalogue shrank 43.5% in under a month. The wider resource corpus grew over the same window. Here is what the crawl history shows and why the two are not in conflict.
read insight →x402 Endpoint Trust Index: August 2026
The August snapshot of x402 resource evidence by network and provider, with exact-route quote validity, freshness and paid-call status, compared against July.
read insight →What x402 endpoints actually charge vs what registries claim
A measured comparison of catalogued prices against the price the endpoint really quotes, across 4,251 routes where both figures exist.
read insight →Edge x402 monetization: AWS CloudFront vs Cloudflare
Both clouds now enforce x402 payment at the edge. One is generally available and one is a waitlist. A provider-side comparison with the availability stated plainly.
read insight →x402 security risks: what the first systematic study found
A July 2026 preprint tested 15 major x402 facilitators and found rule violations in every one. What the four attack vectors mean for buyers and sellers.
read insight →The retry problem: when should a 402 fire?
Agents retry constantly. If a failed or invalid call is not deterministically non-chargeable, buyer and seller end up disputing whether a payment was owed at all.
read insight →Metered and streaming x402 payments
One call, one payment was never the only shape. Sessions and streaming authorizations change how a paid endpoint should be priced and budgeted.
read insight →x402 adoption reality check: what the settlement data can prove
A field report on the July 2026 adoption preprint and a practical evidence ladder for separating protocol activity from independent use.
read insight →Cloudflare Monetization Gateway and x402: a readiness guide
What Cloudflare announced, what remains unavailable or unspecified, and how providers can prepare an origin for x402 edge enforcement.
read insight →x402 multi-network readiness: a provider test guide
A provider-focused checklist for CAIP-2 identifiers, assets, facilitators, signers, test environments, and evidence across network families.
read insight →x402 Foundation governance: what the Linux Foundation launch changes
A field report on the July 14, 2026 operational launch, the move to vendor-neutral stewardship, and the evidence builders should still demand.
read insight →x402 release and ecosystem changelog
A dated, source-linked record of protocol, SDK, governance, infrastructure, and production ecosystem changes without mixing incompatible version lines.
read insight →How to price paid MCP tools with x402
A provider guide to pricing units, free discovery, exact versus usage-based schemes, retries and launch testing.
read insight →Paid MCP server market report 2026: supply, networks and evidence
An evidence-first snapshot of MCP-related entries in the TOLL·402 editorial catalog and the gaps buyers should notice.
read insight →x402 vs MCP: the difference and how they work together
A clear architecture guide to what MCP standardizes, what x402 adds, and where payment belongs in a tool call.
read insight →What currencies can MCP servers accept with x402?
A practical guide to tokens, networks, facilitators and multi-network payment options for paid MCP tools.
read insight →x402 vs OAuth for MCP servers: payment is not authorization
How 401 authorization and 402 payment solve different problems, plus patterns for using either or both safely.
read insight →State of x402 pricing in 2026: what agents actually pay
A practical reading of visible per-call prices in the TOLL·402 catalog, including what the data can and cannot support.
read insight →x402 Endpoint Trust Index: July 2026
A reproducible monthly view of x402 trust by network, provider, exact-route quote validity, evidence freshness and paid-call status.
read insight →How TOLL·402 unifies x402 resources across sources
The crawl, normalization and verification pipeline behind the canonical x402 resource corpus, and how it behaves when an upstream catalogue contracts.
read insight →Best x402 APIs for web scraping and extraction
How to evaluate pay-per-page scrapers, extraction gateways and browser services without confusing availability with verification.
read insight →Best x402 MCP servers: a buyer's evidence checklist
A criteria-first guide to choosing paid MCP tools by capability, transport, price and connection reality.
read insight →Free and sub-cent x402 APIs: what 'cheap' really means
How to find low-cost x402 tools without treating unknown prices, free overview calls and paid work as the same thing.
read insight →x402 on Base vs Solana: how buyers should choose
A buyer-focused comparison of network identifiers, wallet support, service availability and policy implications.
read insight →How to choose an x402 service before your agent pays
A reusable decision framework covering capability, evidence, price, policy and one-call validation.
read insight →x402 quote checked vs paid-call verified
The exact difference between observing a valid 402 requirement and proving settlement plus useful output.
read insight →How TOLL·402 verifies x402 services
How the directory checks exact routes, keeps unsafe probes out, and gives buyers useful, dated service information.
read insight →How to make an MCP server payable with x402
A provider-oriented implementation map covering payment wrappers, discovery metadata and buyer compatibility.
read insight →How to publish x402 Bazaar metadata agents can use
A practical checklist for discoverable route descriptions, schemas, examples and settlement-backed indexing.
read insight →Why x402 services fail verification
The practical causes behind unreachable endpoints, invalid requirements, stale schemas and paid-but-unusable responses.
read insight →How AI agents pay for APIs with x402
A direct, current explanation of the unpaid request, payment requirements, signer, retry and settlement response.
read insight →x402 vs API keys and subscriptions for agent tools
Where pay-per-call HTTP payments reduce friction, and where accounts or subscriptions still provide useful control.
read insight →