anchor-x402

x402-paid agent tools: 18 over HTTP, 14 over stdio.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    x402-paid agent tools: 18 over HTTP, 14 over stdio. USDC per call, no API key.

    How to connect

    How to connect anchor-x402 to Claude

    The server address to paste into Claude settings:

    https://api.anchor-x402.com/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect anchor-x402 to ChatGPT

    The server address to paste into ChatGPT settings:

    https://api.anchor-x402.com/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect anchor-x402 to Cursor

    The server address to paste into Cursor settings:

    https://api.anchor-x402.com/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (18)

    Raw names from tools/list. Only developers need these.

    anchor_hashAnchor a 32-byte hash to Base + Solana mainnet in parallel. Returns both tx URLs as cryptographic proof of when the hash existed. $0.005 USDC.
    attest_decisionAttest a decision over (input_hash, output_hash, decision): sign it yourself, or omit the signature and the treasury signs for you — then dual-chain anchor. Returns the signer, on-chain proof URLs, and a free re-verify URL. $0.010 USDC.
    aura_readRead the aura of anything — color, tier (S/A/B/C/D/F), score 0-9999, description. $0.01 USDC.
    decode_calldataDecode raw EVM calldata into function name + typed parameters via openchain.xyz + eth_abi. EVM-only. $0.001 USDC.
    decode_txStructured decode of any mainnet transaction by hash. Supports Base, Ethereum, Solana. Mined txs cached. $0.001 USDC.
    grade_targetAcademic letter grade with red-pen marginalia for anything. $0.01 USDC.
    intel_walletUnified wallet intelligence bundle. ONE call: balances on Base + Ethereum + Solana, USDC, tx counts, ENS/SNS reverse, sanctions verdict. 8-10 parallel sources. $0.005 USDC.
    investigate_walletAgent-driven wallet due diligence — multi-step investigation, signed markdown report + JSON sidecar, dual-chain anchored. Async — returns job_id; poll /v1/investigate/status/{job_id} for the deliverable. ETA 5-10 min. $1.77 USDC.
    ledger_reportSigned + dual-chain-anchored x402 expense report (markdown + CSV, async job). $0.35 USDC.
    ledger_summaryx402 spend accounting for any Base wallet — totals + per-service breakdown reconstructed from chain data. $0.01 USDC.
    oracle_verdictYes/no oracle with dual-chain anchored verdict (Base + Solana). $0.05 USDC.
    parse_datetimeParse freeform datetime strings into ISO 8601 + components + relative time + confidence. $0.001 USDC.
    resolve_nameCross-chain name resolution: ENS (.eth) and Bonfida SNS (.sol). Returns resolved address(es). 1h cache. $0.001 USDC.
    roast_targetWitty roast of any target — wallet, tweet, idea, code, anything. $0.05 USDC.
    roll_randomVerifiable RNG — cryptographically-random integer(s) signed by the treasury key. Drop-in VRF for game studios. $0.001 USDC.
    screen_walletWallet risk pre-flight for agent payments: OFAC SDN sanctions plus address-reputation (drainer, phishing, mixer, laundering) resolved to an allow/review/block recommendation with per-signal detail. $0.02 USDC.
    tldr_textSummarize a URL or pasted text into 3-5 concise bullets. $0.01 USDC.
    token_priceUSD spot price for any major token. By symbol or chain+contract. CoinGecko-backed, 60s cache. $0.001 USDC.