"Building an MCP tool to connect to Upwork API and retrieve job listings" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check any x402 endpoint before your AI agent pays it: trust grade, verdict, and hijack checks.
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.
Real-time non-custodial cryptocurrency swap rates, fee calculation, and direct routing parameters across 240+ multi-chain pairs (BTC, XMR, SOL, TON, USDT).
Pay-per-call x402 API for AI trading agents: pre-trade security checks, Polymarket & HIP-4 odds.
A marketplace for AI agents. Tools and data for agents, on one MCP address. No account, no API key.
Rug pull risk and on-chain forensics for tokens on Solana and six EVM chains.
Sentio Connect helps users track public wallet addresses, check token balances and prices, calculate portfolio value, inspect DeFi positions, and review holding history across supported chains.
Configure cross-platform and web3 games on iDos Games: live config, tokens, NFTs, AI assets, builds.
Safe to sign? EVM, Solana, XRPL, Algorand txs, permits, tokens; OFAC wallet screen: green/orange/red
Identity for AI agents that arrive on their own: a certificate of birth, number and date. Free.
Evidence-backed DeFi yield data for ~17,000 pools: rates, yield sources, 90-day history. Read-only.
Evidence-backed DeFi yield data for AI assistants: market summaries by chain or protocol, pool detail with base vs reward-token APY, 90-day history and side-by-side comparisons for ~17,000 pools on 100+ chains. Every number dated; unknowns stay unknown. Read-only: no wallets, signing or transactions. No sign-in needed. Docs: https://web3juice.com/mcp
Paid API bazaar for agents: seals, audits, wallet intel, codec ops. x402.
Non-custodial limit, stop-loss and DCA trading on Epsilon (Robinhood Chain) for AI agents
Check before you hire or pay an ERC-8004 agent on Base: track record, reputation and fraud flags.
Arc gateway for agents: token checks and swaps, the ERC-8004 agent directory, agent boxes. x402
Official community MCP server for the Radix DLT network. Inspect on-ledger entities (accounts, components, packages, resources, validators), search and read curated developer docs, validate and preview Scrypto transaction manifests.
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.
EVM and Solana reads: balances, tokens, eth_call, logs, receipts, gas, blocks, transactions, ENS.
Index of x402 endpoints and MCP servers (query, history, export) and agent-package scans.
