Checkpoint402

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Pay-per-call tx explainer, DeFi yields, token safety, SEC 8-K and OFAC data via x402 (USDC on Base).

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Checkpoint402": {
      "url": "https://api.checkpoint402.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (7)

• list_services read-only

  Free. Lists every Checkpoint402 data service with its price, inputs, example output link and how payment works.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• explain_transaction read-only

  Paid: $0.03 USDC per successful call via x402 (not charged on errors). Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee — plus the structured decoded data.

  Parameters:

  • hash (required) — string — Transaction hash (0x + 64 hex chars)
  • chain — string — Chain (default base)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• find_defi_yields read-only

  Paid: $0.05 USDC per successful call via x402 (not charged on errors). Top DeFi yields across 16k+ pools, filtered by asset, chain, minimum TVL and risk, each with a simple explained risk tier (outlier APY, thin TVL, reward-heavy, IL exposure). Data: DefiLlama.

  Parameters:

  • asset — string — Token symbol, e.g. USDC, ETH
  • chain — string — Chain name, e.g. Base, Ethereum, Arbitrum
  • limit — number — Results, 1-50 (default 10)
  • maxRisk — string — Highest risk tier to include (default medium; use high to include outlier APYs)
  • minTvlUsd — number — Minimum pool TVL in USD (default 1,000,000)
  • stablecoinOnly — boolean — Only stablecoin pools

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• new_token_safety_feed read-only

  Paid: $0.10 USDC per successful call via x402 (not charged on errors). Newly launched token pools on Base, Ethereum or BSC, each with a 0-100 safety score and explicit red flags (honeypot, unverified code, mintable, owner powers, high tax, unlocked liquidity, whale concentration). Data: GeckoTerminal + GoPlus.

  Parameters:

  • chain — string — Chain (default base)
  • limit — number — Results, 1-20 (default 10)
  • minScore — number — Only tokens with safety score >= this, 0-100 (default 0)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• token_safety_check read-only

  Paid: $0.02 USDC per successful call via x402 (not charged on errors). Is this token a scam? Checks any token on Base, Ethereum or BSC and returns a 0-100 safety score, a verdict, red flags (honeypot, hidden fees, owner powers, unlocked liquidity, whale concentration, creator's past honeypots), good signs and a plain-English summary. Data: GoPlus + DexScreener.

  Parameters:

  • address (required) — string — Token contract address (0x + 40 hex chars)
  • chain — string — Chain (default base)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• sec_8k_company_events read-only

  Paid: $0.10 USDC per successful call via x402 (not charged on errors). Latest SEC 8-K filings — market-wide within minutes of filing, or for one ticker — with each item code translated to plain English, high-impact events flagged (earnings, CEO changes, M&A, bankruptcy, cyber incidents) and AI summaries of the filing text.

  Parameters:

  • item — string — Only filings with this 8-K item code, e.g. 5.02
  • limit — number — Results, 1-20 (default 10)
  • ticker — string — Stock ticker; omit for the market-wide latest feed
  • highImpactOnly — boolean — Only filings with a high-impact item

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• ofac_sanctions_screen read-only

  Paid: $0.05 USDC per successful call via x402 (not charged on errors). Screens a person/company name (fuzzy, alias-aware) and/or a crypto wallet address against the US Treasury OFAC SDN list, refreshed twice daily, including the extended-remarks file where most sanctioned crypto addresses are listed.

  Parameters:

  • name — string — Person or company name
  • limit — number — Max name candidates, 1-20 (default 5)
  • address — string — Crypto wallet address (EVM, BTC, TRX, …)
  • threshold — number — Name-match threshold 0.7-1 (default 0.92)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.