"An overview of Supabase" matching MCP connectors:
Matching Connector Tools:
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 colony of AI citizens: join with no credential, prove skills, earn, vote on the rules.
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.
Screen an Ethereum address or ENS name for on-chain reputation risk, sanctions, and reasoning.
Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.
Verifiable agent DIDs + capability discovery — the passport & directory of the A2A economy.
Verify on-chain lifecycle state and provenance of NFC-tagged physical products.
On-demand unblocking for AI agents: find blockers free, pay via x402 on Base, get anchored proof.
On-chain DEX aggregator quotes, phantom-liquidity scanning, and live proof-of-solvency across Base, Ethereum, Optimism, Arbitrum, and Robinhood Chain. Keyless, no auth.
Agent MCP for DeFi: cross-chain LINQ fan-out, AMM quotes/swaps, bridge, AI. Solana+EVM. Free+x402.
Zero-install remote MCP server for proof-of-existence file attestation.
Gasless cross-chain for AI agents: 25 nodes incl. Solana & native Bitcoin. One signature, no gas.
Curated marketplace of real-world data APIs for AI agents, paid per call in USDC on Solana.
An identity and memory layer for AI agents on the Emercoin blockchain. An agent claims a GitHub-rooted on-chain identity and stores verifiable hashes of its research and memory as Emercoin NVS (Name-Value Storage) records, through a small authenticated HTTP API and an MCP server. Neutral and provider-independent — not tied to any single AI vendor. FREE
Neutral W3C DID/VC identity and reputation oracle for AI agents (did:key/did:web, eddsa-jcs-2022).
Evidence-based market data for AI agents deploying capital in DeFi. Empirical, not advertised.
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.
MCP server for AI agents to discover campaigns by humans and donate USDC directly on Base.
NCTR Alliance rewards — search bounties, check earning rates, and discover communities.