io.github.hypeprinter007-stack/anchor-x402

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

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

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "anchor-x402": {
      "url": "https://api.anchor-x402.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (18)

• anchor_hash

  Anchor 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.

  Parameters:

  • data — Arbitrary JSON to be canonicalized + SHA-256'd by the server. Mutually exclusive with `hash`.
  • hash — Pre-computed 32-byte hex hash (64 chars, no 0x prefix). Mutually exclusive with `data`.
  • note — Optional 200-char note included in the response (not on-chain).

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

• attest_decision

  Attest 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.

  Parameters:

  • input_hash (required) — string — 64-char hex SHA-256 of the agent's input.
  • output_hash (required) — string — 64-char hex SHA-256 of the agent's output / decision payload.
  • decision (required) — string — Free-form short label, e.g. "APPROVED", "REJECTED", "CONFIDENCE=0.93".
  • scheme — Signature scheme when you supply a `signature`: "eip191" (EVM) or "ed25519" (Solana).
  • signature — 0x-prefixed hex (eip191) or base58 (ed25519). Omit to have the anchor-x402 treasury sign for you (hosted-signer mode, for wallet-less agents).
  • signer_pubkey — Required for ed25519 (Solana base58 pubkey). Ignored for eip191 — address is recovered.

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

• aura_read read-only

  Read the aura of anything — color, tier (S/A/B/C/D/F), score 0-9999, description. $0.01 USDC.

  Parameters:

  • target (required) — string — Anything to read the aura of.

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

• decode_calldata read-only

  Decode raw EVM calldata into function name + typed parameters via openchain.xyz + eth_abi. EVM-only. $0.001 USDC.

  Parameters:

  • chain (required) — string — "ethereum" supported; "solana" returns 400.
  • calldata_hex (required) — string — Raw EVM calldata (>=4-byte selector), with or without 0x prefix.
  • contract_address — Optional. Reserved for future on-chain ABI lookups; currently unused.

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

• decode_tx read-only

  Structured decode of any mainnet transaction by hash. Supports Base, Ethereum, Solana. Mined txs cached. $0.001 USDC.

  Parameters:

  • chain (required) — string
  • tx_hash (required) — string

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

• grade_target read-only

  Academic letter grade with red-pen marginalia for anything. $0.01 USDC.

  Parameters:

  • target (required) — string — Anything to grade.

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

• intel_wallet read-only

  Unified 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.

  Parameters:

  • wallet (required) — string — EVM 0x… address (40 hex) or Solana base58 pubkey.

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

• investigate_wallet

  Agent-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.

  Parameters:

  • address (required) — string — EVM 0x... or Solana base58 address to investigate.

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

• ledger_report

  Signed + dual-chain-anchored x402 expense report (markdown + CSV, async job). $0.35 USDC.

  Parameters:

  • wallet (required) — string — EVM address (Base) whose x402 spend to reconstruct.
  • to — ISO date or datetime, end of range. Default: now.
  • from — ISO date or datetime, start of range. Default: 30 days before `to`.
  • title — Report title; appears in the markdown header.
  • format — string — Which report files to produce. Default both.
  • group_by — string
  • direction — string — outbound = spend, inbound = revenue.
  • min_amount — Minimum USDC per transfer, e.g. 0.001.
  • prepared_for — Optional client name for the report header.
  • include_unfiltered — boolean — Include non-x402 USDC transfers as category=other_transfer.

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

• ledger_summary read-only

  x402 spend accounting for any Base wallet — totals + per-service breakdown reconstructed from chain data. $0.01 USDC.

  Parameters:

  • wallet (required) — string — EVM address (Base) whose x402 spend to reconstruct.
  • to — ISO date or datetime, end of range. Default: now.
  • from — ISO date or datetime, start of range. Default: 30 days before `to`.
  • group_by — string
  • direction — string — outbound = spend, inbound = revenue.
  • min_amount — Minimum USDC per transfer, e.g. 0.001.
  • include_unfiltered — boolean — Include non-x402 USDC transfers as category=other_transfer.

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

• oracle_verdict

  Yes/no oracle with dual-chain anchored verdict (Base + Solana). $0.05 USDC.

  Parameters:

  • question (required) — string — A yes/no question for the oracle.

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

• parse_datetime read-only

  Parse freeform datetime strings into ISO 8601 + components + relative time + confidence. $0.001 USDC.

  Parameters:

  • input (required) — string — Freeform datetime string in any format.
  • timezone — string — IANA tz name (e.g. 'America/New_York').
  • base_time — ISO 8601 reference; defaults to now UTC.

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

• resolve_name read-only

  Cross-chain name resolution: ENS (.eth) and Bonfida SNS (.sol). Returns resolved address(es). 1h cache. $0.001 USDC.

  Parameters:

  • name (required) — string — Human-readable name, e.g. 'vitalik.eth' or 'bonfida.sol'. ENS (.eth) and Bonfida SNS (.sol) are supported.

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

• roast_target read-only

  Witty roast of any target — wallet, tweet, idea, code, anything. $0.05 USDC.

  Parameters:

  • target (required) — string — Anything to roast: wallet, tweet, idea, code, etc.

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

• roll_random

  Verifiable RNG — cryptographically-random integer(s) signed by the treasury key. Drop-in VRF for game studios. $0.001 USDC.

  Parameters:

  • low (required) — integer — Inclusive low bound of the integer range.
  • high (required) — integer — Inclusive high bound. Must be >= low.
  • count — integer — How many integers to sample. 1-100.
  • label — Optional caller-defined tag (e.g. 'treasure_drop_42'). Included verbatim in the signed payload.
  • commitment — Optional 32-byte hex pre-commitment from the caller. Included in the signed payload, so the server cannot have chosen the result after seeing the caller's downstream intent.

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

• screen_wallet read-only

  Wallet 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. $0.005 USDC.

  Parameters:

  • wallet (required) — string — EVM 0x… address (40 hex) or Solana base58 pubkey.

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

• tldr_text read-only

  Summarize a URL or pasted text into 3-5 concise bullets. $0.01 USDC.

  Parameters:

  • url — URL to fetch and summarize. Provide either text or url.
  • text — Pasted text to summarize. Provide either text or url.

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

• token_price read-only

  USD spot price for any major token. By symbol or chain+contract. CoinGecko-backed, 60s cache. $0.001 USDC.

  Parameters:

  • chain — Chain slug: base, ethereum, solana, polygon, arbitrum, optimism, bsc, avalanche. Use with contract.
  • symbol — Token symbol like 'ETH', 'BTC', 'SOL', 'USDC'. Mutually exclusive with chain+contract.
  • contract — Token contract address. Requires chain.

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

Publisher website Repository

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