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x402 resource directory

Useful x402 links for builders and buyer agents.

A curated starting map for x402: official docs, agent-wallet tooling, marketplaces, protocol references, seller guides, and ResolveBots signals. Built for people trying to ship or evaluate paid agent endpoints. Inclusion is not an endorsement; buyer agents should still check price, network, receipt behavior, output shape, and recent evidence before spending autonomously.

Circle for Agents x402 docs Ecosystem pulse

Start here

Core x402 references.

Use these first when you need the neutral protocol view, the canonical docs, and the codebase.

x402.org

The public home for the x402 standard, including the high-level protocol narrative and ecosystem metrics.

protocoloverview

x402 documentation

Neutral docs for buyers, sellers, facilitators, payment schemes, signed offers, receipts, and integration guides.

docsbuilders

x402 GitHub

Open-source implementation, examples, packages, and issues for teams building directly against the protocol.

codesdk

x402 examples

Reference buyer, seller, facilitator, client, and MCP examples from the open x402 implementation.

examplesimplementation

x402 V2 launch note

Protocol release note covering V2 direction, multi-chain identifiers, SDK changes, and discovery improvements.

v2protocol

Community

Where x402 builders talk.

Use these for support, standards conversations, ecosystem discovery, and thoughtful participation before we host our own spaces.

CDP / x402 Discord

Official Coinbase Developer Platform Discord. Coinbase's x402 docs point here for help, updates, and support.

Discordsupport

x402 Foundation GitHub issues

Standards and implementation conversation around the open x402 codebase, proposals, bugs, and examples.

GitHubstandards

x402 Foundation

Linux Foundation project home for the open-source x402 standard and governance direction.

foundationgovernance

Agent wallets

Circle agent commerce tools.

Useful when an agent needs USDC, spending controls, marketplace discovery, and x402 payments.

Circle for Agents

Circle's agent-facing landing page and marketplace entry point for paid APIs, agent wallets, and USDC workflows.

marketplaceagent wallet

Circle Agent Stack docs

Documentation for Circle CLI, agent wallets, nanopayments, Circle Skills, and x402-compatible API payments.

USDCnanopayments

Circle seller explainer

Circle's practical framing for turning an API into a storefront that agents can buy from using x402 and USDC.

sellergo-to-market

Implementation

Coinbase x402 docs.

Useful for the request-response mechanics, buyer quickstarts, seller quickstarts, and facilitator details.

Coinbase x402 overview

Overview of the HTTP 402 payment flow and how services can charge without account setup or API keys.

overviewCDP

Quickstart for buyers

Buyer-side guide for discovering payment requirements, completing payment, and accessing a paid resource.

buyer agentquickstart

CDP Bazaar docs

Coinbase's discovery extension for x402 services. Useful for sellers who want paid routes to be discoverable by agents.

discoveryBazaar

Edge sellers

AWS and Cloudflare x402 on-ramps.

Edge networks make it easier to turn content, APIs, datasets, and tools into paid resources. That also creates a new class of sellers who need readiness checks before buyers arrive.

AWS launch announcement

Official announcement of AI Traffic Monetization for AWS WAF and CloudFront customers.

launchedge

Cloudflare Monetization Gateway

Cloudflare's waitlist for charging for pages, APIs, datasets, and MCP tools with x402-style payment flows.

Cloudflarewaitlist

Identity & reputation

ERC-8004 and agent trust rails.

ERC-8004 is becoming part of the buyer-agent trust conversation. ResolveBots is tracking it as a future place to publish structured review evidence, not as a current production claim.

EIP-8004 specification

The Trustless Agents standard: identity, reputation, and validation registries for autonomous agents.

standardtrust

8004scan

Explorer for ERC-8004 agent listings, feedback, validation records, and leaderboards.

explorerreputation

Awesome ERC-8004

Curated resource list for ERC-8004 tooling, explorers, examples, and trust infrastructure.

resourceswatchlist

ResolveBots Trust feed

Current off-chain review feed. Future ERC-8004 work should point on-chain records to this kind of signed evidence bundle.

roadmapevidence

Market signals

Discovery and ecosystem tracking.

Good for finding what exists, what is moving, and where supply may be turning into reliable buyer-agent inventory.

Agentic.Market

Coinbase's discovery layer for x402 services. Useful for finding what is live; ResolveBots focuses on what survives being bought.

directoryCoinbase

x402scan

Ecosystem explorer for x402 transactions, sellers, origins, and resources.

explorermarket

x402scan resources

Marketplace-style resource directory for x402-compatible endpoints and services.

directorysupply

Awesome Agentic Commerce

Community-maintained resource list for x402, agentic commerce, specs, repos, directories, and adjacent standards.

resourcescommunity

Awesome x402

Community-maintained x402 resource list with directories, examples, tools, services, and implementation references.

resourcescommunity

Onyx Bazaar

CDP-discovery oriented leaderboard and marketplace view for paid x402 services.

Bazaarleaderboard

ResolveBots x402 Ecosystem Pulse

Daily ResolveBots count of public X mention volume, YouTube upload volume, and observed x402scan supply signals.

analyticstrend

ResolveBots

Trust and launch tools.

Our own operating layer for finding, testing, packaging, and improving x402 endpoints.

x402 Trust Index

Evidence-graded endpoint reviews, paid-test notes, quality signals, and category labels.

trustreviews

ResolveBots Services

Single page for our paid endpoints, sample catalogue, launch support, trust feeds, and machine-readable manifests.

servicesagent access

x402 Sample Outputs

Catalogue of fixed-price point-in-time sample outputs captured by ResolveBots during paid endpoint tests.

samplesfixed price

Endpoint Proof Check

Machine-readable check for advertised x402 handshake, metadata, JSON shape, and discovery posture.

validationseller

Launch Seeding

Seller launch support for manifests, OpenAPI, 402 behavior, early tests, and credible launch notes.

launchGTM

Directory policy

This page favors official docs, implementation guides, public marketplaces, and ResolveBots-tested signals.