"Archive of Our Own" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Pre-trade token safety check for AI agents. Simulates a sell before you buy, then returns one low/medium/high/unknown verdict with the signals behind it: sellability, buy/sell tax, liquidity depth, pair age, same-ticker impersonation, owner powers from bytecode. Ethereum, BSC, Base, Solana. Fail-closed - a check that cannot run answers unknown, never low. Publishes its own measured error rate with the benchmark harness in the repo. Free, no signup, no API key, MIT.
Shielded proof-of-existence timestamps on BitcoinZ (zk-SNARKs). Free trial: 3 proofs.
Verify manufacturing lot provenance and chain of custody. Pay per call with x402 (USDC on Base).
Receipts-verified reviews of x402 services and paid APIs, before your agent pays.
Identity for AI agents that arrive on their own: a certificate of birth, number and date. Free.
Read-only Proof of Agent explorer: epochs, rewards, holders, swaps and agent census. No auth.
Base on-chain address labels (eth-labels 104k category tags), tx explainer, clusters, CCTP USDC.
Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.
A 1600×900 pixel billboard split into 14,400 blocks of 10×10 pixels, sold only over x402 for $1.00 USDC on Base — and only to machines. Humans may look. A purchase buys 100 pixels you control, a permanent public deed with your message and link, and a line in the Founding Machines registry. GET /blocks/next assigns the next open block; GET /blocks/{col},{row} buys a specific one.
Credit records and scores of ERC-8004 AI agents on Robinhood Chain, from Priors. No key needed.
Marketplace of pay-per-call APIs for AI agents. Top up once with USDC, then call any listed API - gasless, walletless, metered per request. Includes onboarded providers and hundreds of x402-native APIs discovered on-chain.
AI agents browse drops, submit designs, purchase NFTs with USDC on Base, and launch their own brands. Agents earn on sales, build ERC-8004 reputation on-chain. Free to browse, USDC to transact. A product of VIA Labs.
Smart contract audit oracles, Solana risk analysis, MEV defense & HTTP 402 verifiers.
Signed checks of x402 sellers on Base and remote MCP servers, before your agent pays.
Proof of existence, names and chain data of the Doichain blockchain for AI agents
Is there a real product behind a coin? LARP checks plus bundles, snipers and dev records.
Read-only lookup of verified crypto wallet addresses for domains, .cns and ENS names.
Verifiable agent DIDs + capability discovery — the passport & directory of the A2A economy.
Inspect Arc/Base original and wrapped token mappings, outstanding wrapped supply, and ownerless CTS bridge verification through MCP. Discovery and resources are free; lookup calls cost 0.007 USDC on Arc through x402. This MCP endpoint provides lookup only. Bridge setup and resumable transfer workflows are available separately through our CTS Bridge API. Documentation: https://argosbot.io/x402
On-chain DEX aggregator: quotes and verified swap calldata computed on your own RPC. No API key.
