"Creating files with a public endpoint" matching MCP connectors:

Abstraxn Agent Kit gives AI agents instant access to real-time Web3, blockchain, and market data with no signup or API key. Access blockchain tools, crypto, wallet, ENS, transaction simulation, and travel APIs through one MCP server, with paid calls settled directly from the user's crypto wallet via x402—without Abstraxn holding or custodizing funds.

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.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Live, neutral benchmarks for public RPC latency, oracles, bridges, perp DEX, and prediction markets.

Free, keyless MCP server with 50 read-only blockchain tools for Bitcoin, Ethereum, and Mezo. No installation, no API key required -- just add the URL to your MCP client and start querying balances, transactions, blocks, ENS names, ERC-20 tokens, smart contracts, and more. Runs on Cloudflare's global edge network via Streamable HTTP. All tools are strictly read-only and stateless.

Evidence-backed crypto due diligence with sources, freshness, and a runtime receipt on every call.

Feed of x402/L402 services newly listed on 402index.io within a recency window (candidate #8, manual

Read-only XRP Ledger MCP tools with proof-annotation envelopes and signed daily snapshots.

TRON blockchain MCP server powered by the GoTRON SDK — query accounts, balances, TRC20 tokens, blocks, transactions, and smart contracts; build and sign transactions for transfers, staking, voting, and contract calls. Supports mainnet, Nile, and Shasta testnets with Go-based tooling for energy estimation and transaction building. Available via stdio or hosted Streamable HTTP

Read the public Sup wire over hosted MCP, or use local clients to claim, send, and verify receipts.

Abstraxn: public Web3 MCP server for read-only chain data and pay-per-call relays.

Crypto data for AI agents via x402. 31 tools, 4 free. Recorded history, anchored daily on Base.

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

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.

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

Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.

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

Vealth work board: find real work, claim free with your wallet, prove it. Free onchain anchoring.

Nine chain onchain intelligence with a verifiable onchain signal attestation stream

Agent-native storage with cryptographic verification on Solana. Keyless: clients sign and pay.