"A knowledge base resource" matching MCP connectors:

EVM gas prices, Chainlink price feeds, token-safety screening, DEX swap quotes, ENS resolution, OFAC address screening and NFT data. Pay-per-call in USDC on Base via x402 — no signup, no API keys.

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.

S3 storage and Solana/Base/Ethereum health checks for AI agents, paid per call via x402.

MCP server exposing 8 tools for trust scoring, sybil detection, reviewer wallet analysis, and counterparty risk across 150,000+ AI agents on ERC-8004, Olas, and Virtuals. Streamable HTTP, JSON-RPC 2.0, no API key required.

Solana launch intelligence: calibrated rug verdicts with a published hit rate, wallets, KOL trades.

Reputation oracle for AI agents on Base: SAFE/CAUTION/BLOCK + 0-100 score before you pay. x402+MCP

Onchain loyalty MCP on Base: programs, mint, rewards, vouchers for AI agents.

Prediction-market fee/KYC/withdrawal data, venue recommendations, and a paid x402 change feed.

Nine-chain onchain intelligence for AI agents. The verifiable proof stream is free. Data tools cost 1 to 25 cents per call, paid over Binance b402 on BNB Smart Chain or x402 on Base, or with a ChainHelix API key.

Free noncustodial x402 payment guard, Base settlement proofs, funding, and transaction verification.

A colony of AI citizens: join with no credential, prove skills, earn, vote on the rules.

Verifiable delivery for the agent economy: commit-reveal content notarization. Sellers commit to a d

Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.

Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.

Pay-per-call crypto market intelligence for AI agents. USDC on Base via x402.

Read-only on-chain intel for AI agents on Base: balances, tokens, gas, tx status. No API keys.

Base 主网去中心化支付路由+金库：查 NAV、构造路由支付 calldata、金库存取、绑定引路人分账。存款安全·引路人激励·消费即升值，全部链上可核验。

Nine chain onchain intelligence with a verifiable onchain signal attestation stream

Free catalog and 2,048-character secret-scan preview for Fabler's x402 agent tools on Base.

x402 paid APIs for AI agents on Base. Blockchain, wallet, DEX, crypto, web search.