"A database that can be operated or managed" matching MCP servers:

Cross-chain cryptocurrency swaps via Chainflip. Get quotes, execute swaps, and track progress. No API key required to get started.

Universal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents on Base L2.

Enables agents to request AtlasYield judgments: get 16-factor vault scores, check whether deposits can be exited at size, list blowup alerts, and compare vaults—all read-only with no key or custody.

Enables MCP agents to verify Spanish companies by CIF against the BORME, returning registry data, recent acts, and explainable 0–100 risk scoring. Also exposes the x402 payment challenge (price, network, asset, pay-to address) so a wallet the user controls can settle it and the verification can be retried.

Lets AI agents encrypt a password, API key, or note locally, pay a small USDC fee over x402 on Base, and share a single-use link that can be opened exactly once and is destroyed on read. Reading is free, expiring unread secrets are cleaned up, and the server only ever stores ciphertext.

The MCP server that can read recent news from Coindesk.

Enables MCP clients such as Claude to look up AI agents registered in the ERC-8004 registries on Robinhood Chain, retrieving profiles, owners, feedback, validations, settlement evidence, and USDG-weighted trust scores. It is read-only and requires no wallet or API key, and can be reached either as a hosted remote endpoint or locally via npx.

RandomWeb3MCP is a random element generation service based on EVM block hash. The service provides various random element generation tools that can be used in games, finance, testing, and other fields.

Enables AI agents to query verifiable physical-world ground truth for any point on Earth — water availability, seismic and space-weather hazard, ground stability, and resource indications — with every answer backed by a Bitcoin-anchored provenance record that can be independently verified. It also lets agents check whether an Earth-science hypothesis has already been tested, list documented nulls and retractions, and run bounded controlled tests that return UNTESTABLE rather than fabricate a result.

A server that interfaces with the Hedera Testnet Mirror Node API, converting its OpenAPI-defined endpoints into MCP-compatible tools that can be accessed over Server-Sent Events (SSE).

Lets a user connect their own AI agent with a personal read-only token so it can read that user's XRPL lending data — vault series, positions, loans, projects and operator queues — as that user sees it, without any ability to buy, sign or change anything.

Enables developers and AI agents to check, price, pay for, and follow paid work on a network of AI agents over stdio or streamable HTTP, exposing eight tools where only ordering can spend and only behind four safety gates. Without a wallet key every tool stays free and ordering returns a dry run, so an agent can inspect plans and prices before any payment is signed.

Gives an AI agent a Stellar wallet for x402 payments whose spending budget is installed and enforced on-chain by a Soroban smart contract, so overspending is refused by the contract even if the agent process is compromised, replaced, or restarted. Budgets are declared as scoped, non-rounding data (e.g. 5 USDC per rolling day) that the agent can spend against but cannot alter or redirect.

An MCP server that tracks the historical changes of Twitter usernames—frequent screen name changes in crypto projects can be a red flag for potential scam risks.

Provides a comprehensive set of tools for Polymarket prediction market trading, including Gamma discovery, CLOB trading, gasless relayer, managed WebSockets, and paper simulation, enabling agents to interact with Polymarket natively.

Enables AI agents to request a sourced, verdict-free case file for a Solana token mint over MCP, returning on-chain facts such as authorities, creator wallet age, insider networks, and metadata-injection flags. Payments per check can be settled with x402.

Exposes typed crypto-security tools — token risk scoring, wallet forensics, deployer reputation, sentiment, and report generation — to MCP-capable agents over streamable HTTP or stdio. Gates premium calls behind per-request x402 crypto micropayments, delegating verification and settlement to a self-hosted facilitator and failing closed when payment cannot be confirmed.

Enables querying Polymarket prediction market data, including top active markets and order books, without an API key or database.

a task marketplace + reputation network for AI agents. Agents register, complete tasks, earn credits (AgMag), and build real reputation by staking on claims — predictions, facts, data quality — that get proven right or wrong over time. MCP-native, so any agent framework can plug in directly

Provides AI agents with independent, advisory reviews before irreversible actions, returning recomputable, Bitcoin-anchored signed proofs that anyone can verify for free via a public verdict ledger.

Checks live x402 routes across Base, Solana, and Algorand before agents spend. $0.003 USDC settles only for a valid live eligible route; normal typed misses are not settled. Free preview and validate tools. Seller payment is separate; the agent keeps its wallet. Optional signed route-binding receipts support buyer-side checks.

Enables AI agents to make pay-as-you-go AI inference requests through x402 with automatic Solana USDC payments, no API keys or registration, while enforcing configurable spending limits.

MCP server for RugGuard, enabling AI agents to perform pre-trade rug checks on tokens, with paid tools for token scanning and pre-trade verification, and a free metrics resource.

An MCP server that gives autonomous coding agents deterministic, schema-validated tools for EVM smart contract development — security scanning, gas profiling, compiler diagnostics, and transaction simulation.

Non-custodial on-chain escrow + AI arbitration for agent-to-agent USDC payments on Base. Seven tools wrap a verified EscrowV1 contract — create, deliver, confirm, dispute, resolve — with read-only introspection if no wallet key is provided.

Enables AI agents to read and bid on a paid message slot on Solana, with enforced spend limits, dry-run proposals, and an append-only audit log for every write.

Agent-Level Transaction Safety Oracle. Before an AI agent signs a blockchain transaction, it returns a SAFE/UNSAFE verdict with a SENTINEL Score (AAA-D) and risk flags. Pay-per-call $0.005 USDC via x402 on Base.

Keyless crypto payments for AI agents. One MCP call turns any wallet address into a non-custodial crypto payment link or tip jar, no API key and no account, with funds settling straight to your wallet at a 0% platform fee (USDC/USDT, BTC, LTC, DASH, DOGE, ZCASH).

Lets an AI agent hire and pay a verified human: post real-world tasks (voice, observation, judgment) and pay in USDC via a non-custodial x402 auth-capture escrow on Base, budget frozen at deploy. Humans verify their X identity before submitting.

Local-first crypto portfolio aggregation across exchanges (Bybit, Binance), EVM and Solana wallets, and Polymarket. Read-only credentials, runs as a local MCP server. Data aggregation only, not financial advice.