"An overview of REST (Representational State Transfer)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Pay-per-call MCP tools for agents: 20 free calls a day, then pay per call with x402 (USDC on Base mainnet) or a prepaid spend key. 30 tools — text/data utilities, x402/EVM-native tools (decode an x402 challenge, verify a settlement receipt on-chain, EIP-712 hashing, ABI encode/decode, Merkle-proof verify, keccak256, EIP-55 address checks) and independent providers' tools priced from $0.001. Signed delivery receipts. No sign-up.
Shielded proof-of-existence timestamps on BitcoinZ (zk-SNARKs). Free trial: 3 proofs.
CabalLens exposes why 94% of Solana meme-coin traders lose money even on tokens passing static contract checks (RugCheck 100/100). Collapses top-25 token holders by tracing 2-hop genesis SOL ancestry to reveal true linked cabal control, and audits copy-trade wallets to expose zero-cost token seeding, wash loops, and follower-dump latency traps. Zero upstream paid APIs, free $0.00 peek triage, and $0.005 deep proof settled natively via x402 USDC or bearer keys.
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.
Rug-risk verdict for any Base ERC20 by contract address: 0-100 score, A-F grade, graded checks (ERC20 shape, honeypot selectors, DEX liquidity, market) plus an ungraded admin-powers profile (proxy, owner, mint, blacklist, pause) with raw evidence. Deterministic, no LLM. Pay-per-call via x402 ($0.01 USDC on Base); initialize and tools/list are free.
Check an AI agent is registered, Active and Verified in Concordium's registry. By Crypto Money Maker
Read-only Proof of Agent explorer: epochs, rewards, holders, swaps and agent census. No auth.
Identity for AI agents that arrive on their own: a certificate of birth, number and date. Free.
Check before you hire or pay an ERC-8004 agent on Base: track record, reputation and fraud flags.
Smart contract security screening for Base. Check any contract or token for risk before interacting with it: Solidity source verification, upgradeable proxies and admin or mint powers, holder concentration, dangerous selectors, and B20 issuer powers. It surfaces the usual rug pull and scam indicators. The free tool needs no wallet and no API key; the paid Flash Audit (3.49 USDC over x402) returns a report with an anchored SHA-256. Payment is the only gate.
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.
Version 2.8.0. HyperNatt Terminal: liquidation radar, Hyperliquid execution context and Li.Fi cross-chain swap for AI agents. BTC ETH SOL BNB XRP HYPE ZEC. Before an order: estimate depth, VWAP, spread and fees for its size. Between checks: compare liquidity and costs with the previous baseline. After execution: reconcile supplied fills. Read-only data, no custody or order submission. 6 tools, v2.8.0; call get_agent_manifest first. Radar and each execution-context call cost 0.001 USDC via x402 Base/Solana or eligible credits; manifest and MCP swap quote are free (on-chain swap fees apply). Daily MCP trial: one free call per paid tool and per token per client each UTC day. Four tools x seven tokens = up to 28 independent trials; then 0.001 USDC per call. Read trial_policy_v2 and free_tier_status_v1 on the same MCP connection for current availability. A zero daily_cap is the separate credit pool, not the intro allowance. Full platform: https://hypernatt.com. Docs: github.com/DIALLOUBE-RESEARCH/hypernatt-terminal.
RPC gateway for agents: six mainnets, measured failover, one key and one meter. Get a key with the get_key tool, no signup. Pay per call with USDC (x402) or bring an account key. Status measured in public.
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.
Read, price and verify creator posts on Sui. An agent holds the same account a person holds.
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.
One identity an AI agent owns: proves who it is offline, keeps its reputation, pays, messages agents
Check an x402 seller before paying: verdict, failure rate and evidence from paid calls on Base.
Signed checks of x402 sellers on Base and remote MCP servers, before your agent pays.
Free signed trust report on an x402 endpoint: lint, signed offers, ERC-8004, payer mix.
Agents launch, trade and discuss tokens on Base, non-custodially, and earn 54% of trading fees.
Verifiable agent DIDs + capability discovery — the passport & directory of the A2A economy.
Verify AI-agent revenue: recompute a Merkle proof and check it against an on-chain anchor.
Check crypto links for phishing lookalikes of wallets, exchanges and dapps before wallet connect
Proof of existence, names and chain data of the Doichain blockchain for AI agents
What the chain records about an address before you pay it, and whether a payment fits it.
Adopt, read, verify and record an Open Entity identity (OEIS-1). No auth, no CAPTCHA.
