DropEngine x402 Agent Services

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "dropengine-x402-agent-services": {
      "type": "http",
      "url": "https://mcp.dropenginehq.com/api/agent-services"
    }
  }
}

24 tools

• action_lock

  Action Lock ($0.001 USDC): Prevent duplicate side effects across agent retries, crashes, and concurrent workers. If an action has side effects and may be retried or executed concurrently, acquire before execution. Complete after confirmed success; release after confirmed…

• agent_spend_governor

  Enforce autonomous-agent budgets before paid actions. Call before spending; authorize, commit, release, or inspect an opaque reservation. Do not use for free operations or an equivalent trusted budget system. Price: $0.001 USDC per call. Agent entry points: risky external…

• agent_permission_vault

  Check whether an owner-configured policy authorizes this capability for the verified caller. Permission check only; agents cannot grant themselves permission. This is authorization, not action safety. Price: $0.001 USDC per call. Agent entry points: risky external action → use…

• agent_outcome_receipt

  Create or verify a tamper-evident receipt of an agent-reported outcome. It proves DropEngine recorded a claim, not that the external event independently occurred. Do not send raw payloads or secrets. Price: $0.001 USDC per call. Agent entry points: risky external action → use…

• invoice_preflight_quote

  FREE, no wallet or document upload: choose the lowest priced Invoice Preflight tool from document type, PDF page count, and optional byte size. Call this before a paid invoice tool when the tier is uncertain. It does not inspect or validate the document. Agent entry points…

• mcp_server_inspect

  MCP server health check ($0.01 USDC on Base): connect to any public MCP endpoint over HTTPS, confirm it is reachable, list its tool names and input-schema summaries, compare against expected tool names, and flag risky or misleading tool descriptions. Read-only: inspected tools…

• check_url

  Paid Agent Preflight URL check ($0.005 USDC on Base). Call before an agent opens, follows, downloads from, or trusts an unknown URL. Performs deterministic checks, safely inspects HTTPS redirects without loading page content, blocks localhost/private addresses, and optionally…

• scan_content

  Paid Untrusted Content Security Layer ($0.005 USDC on Base). Scan untrusted text, HTML, Markdown, email, document text, API responses, and tool outputs before your agent adds them to context, follows their instructions, or acts. Returns risk score, risk categories…

• simulate_transaction

  Paid Transaction Preflight ($0.02 USDC on Base). Simulates an unsigned Base transaction before an autonomous agent signs or broadcasts it. Returns RPC execution/revert status, gas estimate, known top-level method decoding, direct ERC-20 transfer/approval calldata, unlimited…

• check_wallet

  Paid Wallet Risk Check ($0.02 USDC on Base). Call before an agent sends funds to, accepts value from, grants an approval to, or interacts with an unfamiliar address. Checks whether the address is a wallet or contract and reads basic on-chain metadata. Sanctions, scam, drainer…

• check_package

  Paid Package Safety Gate ($0.005 USDC on Base). Call before a coding agent installs, imports, or adds an unfamiliar npm dependency. Checks resolved package/version, OSV vulnerabilities and malware advisories, popular-name typosquatting, and install lifecycle scripts using static…

• route_tool

  Paid Agent Tool Router ($0.002 USDC on Base). Finds and ranks machine-payable MCP services and x402 HTTP endpoints before your agent chooses or pays a provider. Uses structured capability matching, hard constraints, price, observed latency/reliability, and cold-start trust…

• get_live_quote

  Paid Live Product Quote ($0.01 USDC). Retrieves explicitly published product price and stock from a public HTTPS product page before an agent buys; shipping, tax and unknown values remain null. Never purchases. Agent entry points: risky external action → use Agent Action Gate…

• extract_structured

  Paid Fresh Structured Extract ($0.01 USDC). Extracts a fresh webpage into a simple agent-defined typed JSON shape, with validation and per-field provenance. Uses static page data only; never executes page JavaScript and never fabricates missing fields. Agent entry points: risky…

• check_change

  Paid Change / Diff Check ($0.001 USDC). Checks normalized text on a public HTTPS page against a previous SHA-256 hash, returning a compact diff when a prior snapshot is available. Agent entry points: risky external action → use Agent Action Gate when a combined action-specific…

• verify_claim

  Paid Freshness / Claim Verifier ($0.02 USDC). Checks a factual claim against fresh web search evidence and returns supported/contradicted/mixed/insufficient/stale with sources. Requires TAVILY_API_KEY. If the key is missing, returns a provider-unavailable error before requesting…

• analyze_whale_activity

  Paid Whale Intelligence ($0.02 USDC). Summarizes large public GeckoTerminal-indexed DEX trades for a token address on a supported chain. Large-trader labels are size-based heuristics, not verified whale identities; data is not chain-wide. Wallet mode uses Helius (Solana) or…

• scan_arbitrage

  Paid Arbitrage Intelligence ($0.03 USDC). Compares Binance and Coinbase public spot order books at a requested trade size and applies caller- or server-configured taker fee assumptions. Rejects stale books. Excludes transfers, inventory rebalancing, and guaranteed execution…

• backtest_strategy

  Paid Strategy Backtest ($0.10 USDC). Tests built-in long-only spot strategies against bounded public Binance OHLCV history. Signals form at candle close and execute at the next candle open. Applies configured fees/slippage; accepts declarative parameters only and never executes…

• preflight_action

  Agent Action Gate ($0.02 USDC flat; stable MCP tool name preflight_action). Use before an AI agent performs an external action. Evaluates the required safety, trust, spending and transaction checks and returns ALLOW, REVIEW, REQUIRE_APPROVAL or DENY. Use before opening an…

• token_security_audit

  Paid Token Security Audit ($0.01 USDC). Normalizes GoPlus token-security flags and public EVM RPC metadata for supported EVM tokens. Configure GOPLUS_ACCESS_TOKEN or explicitly enable the bounded public API with GOPLUS_PUBLIC_TOKEN_API_ENABLED=1; if neither is available, no…

• invoice_preflight

  Paid invoice check ($0.065 USDC on Base): UBL XML or complete PDF/image invoices up to 3 pages. Compares expected purchase fields and line items; returns evidence, amount checks and match/discrepancy/needs_review. No payment or bookkeeping action is taken. Agent entry points…

• invoice_preflight_10_pages

  Paid invoice OCR ($0.13 USDC on Base): process complete PDF/image invoices up to 10 pages. Oversized PDFs are rejected before OCR. Agent entry points: risky external action → use Agent Action Gate when a combined action-specific safety assessment is needed; unclear…

• invoice_preflight_50_pages

  Paid invoice OCR ($0.475 USDC on Base): process complete PDF/image invoices up to 50 pages. Oversized PDFs are rejected before OCR. Agent entry points: risky external action → use Agent Action Gate when a combined action-specific safety assessment is needed; unclear…

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