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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "presign-guard": {
      "type": "http",
      "url": "https://presign-guard.fizzl.eu/mcp"
    }
  }
}

claude mcp add --transport http presign-guard https://presign-guard.fizzl.eu/mcp

[mcp_servers.presign-guard]
url = "https://presign-guard.fizzl.eu/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "presign-guard": {
      "type": "remote",
      "url": "https://presign-guard.fizzl.eu/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "presign-guard": {
      "type": "http",
      "url": "https://presign-guard.fizzl.eu/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=presign-guard&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcHJlc2lnbi1ndWFyZC5maXp6bC5ldS9tY3AifQ%3D%3D"
}

{
  "servers": {
    "presign-guard": {
      "type": "http",
      "url": "https://presign-guard.fizzl.eu/mcp"
    }
  }
}

{
  "mcpServers": {
    "presign-guard": {
      "httpUrl": "https://presign-guard.fizzl.eu/mcp"
    }
  }
}

extensions:
  "presign-guard":
    enabled: true
    name: "presign-guard"
    type: streamable_http
    uri: "https://presign-guard.fizzl.eu/mcp"
    timeout: 300

Quality 77 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene79 · weight 30

pass
tools.descriptionsevery tool has a description
warn
tools.description_length1 tools have descriptions over 1,024 characters, which crowds the context
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations8 of 8 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: presign_quick_check (destructiveHint, idempotentHint); token_quick_verdict (destructiveHint, idempotentHint); presign_check (destructiveHint, idempotentHint); …
pass
tools.token_costabout 5,501 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability75 · weight 15

warn
stability.changes62 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

8 tools, about 5,501 tokens to load them all · tool set be0516d06075 · tools last changed 2026-10-20 · checked 2026-10-20 13:49 UTC

Tool changes

2026-10-20presign_check_explainchangedinput schema
2026-10-20presign_checkchangedinput schema
2026-10-20presign_quick_checkchangedinput schema
2026-10-19presign_check_explainchangedinput schema
2026-10-19presign_checkchangedinput schema
2026-10-19presign_quick_checkchangedinput schema
2026-10-19presign_check_explainchangedinput schema
2026-10-19presign_checkchangeddescription, input schema
before
Paid ($0.01 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): call this before you sign. Send the transaction, token approval or EIP-712 signature (Permit, Permit2, EIP-3009 x402 payment, Seaport) your agent is about to sign; get back green, orange or red with reason codes: who gets access, whether the spender or recipient is flagged, sanctioned (OFAC SDN) or unverified, unlimited allowances, and the token itself (honeypot, fake look-alike, high tax). On Solana (type solana, the base64 wire transaction): every instruction decoded and the transaction simulated (token account takeovers, System Assign, unlimited delegates, durable nonces, hidden owner or delegate changes). On the XRP Ledger (type xrpl, the unsigned tx JSON): account takeovers (SetRegularKey, SignerListSet, disabling the master key), fake RLUSD, partial payments, missing destination tags, trust-line and issuer risks, and DEX offers far below market. On Algorand (type algorand, base64 msgpack transaction or group in transactions): rekeys, closing the account or an asset to someone else, clawbacks, fake USDC, app update/delete/clear, simulated. Only proceed on green; on orange ask your user; never sign on red. Same as POST /v1/check. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
after · 96% of words in common
Paid ($0.01 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): call this before you sign. Send the transaction, token approval, EIP-712 signature (Permit, Permit2, EIP-3009 x402 payment, Seaport) or EIP-7702 authorization (type authorization: delegating the wallet to a contract, the sweeper trap) your agent is about to sign; get back green, orange or red with reason codes: who gets access, whether the spender or recipient is flagged, sanctioned (OFAC SDN) or unverified, unlimited allowances, and the token itself (honeypot, fake look-alike, high tax). On Solana (type solana, the base64 wire transaction): every instruction decoded and the transaction simulated (token account takeovers, System Assign, unlimited delegates, durable nonces, hidden owner or delegate changes). On the XRP Ledger (type xrpl, the unsigned tx JSON): account takeovers (SetRegularKey, SignerListSet, disabling the master key), fake RLUSD, partial payments, missing destination tags, trust-line and issuer risks, and DEX offers far below market. On Algorand (type algorand, base64 msgpack transaction or group in transactions): rekeys, closing the account or an asset to someone else, clawbacks, fake USDC, app update/delete/clear, simulated. Only proceed on green; on orange ask your user; never sign on red. Same as POST /v1/check. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
2026-10-19presign_quick_checkchangedinput schema
2026-10-18screen_walletchangeddescription
before
Paid ($0.01 USDC via x402 on Base or Solana): call this before your agent pays an address, or before accepting money from one. Send any chain's wallet address (EVM 0x..., Solana, Tron, Bitcoin, XRP Ledger, Algorand, or another currency OFAC lists). Get back green/orange/red: red SANCTIONED_ADDRESS with the SDN entry (name, programs, currency) when the address is on the OFAC SDN list, red or orange when GoPlus reports theft, phishing, laundering or mixer use (EVM). Never pay or accept funds on red. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
after · 96% of words in common
Paid ($0.01 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): call this before your agent pays an address, or before accepting money from one. Send any chain's wallet address (EVM 0x..., Solana, Tron, Bitcoin, XRP Ledger, Algorand, or another currency OFAC lists). Get back green/orange/red: red SANCTIONED_ADDRESS with the SDN entry (name, programs, currency) when the address is on the OFAC SDN list, red or orange when GoPlus reports theft, phishing, laundering or mixer use (EVM). Never pay or accept funds on red. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.

Showing the latest 10. Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 97 / 100

provenance90

liveness100

freshness100

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-1d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://presign-guard.fizzl.eu/mcp` streamable-http	none	yes	100%	635 ms	2025-11-25	2026-10-20

Tools (8)

`feedback`	Report a bug, a missing feature or anything else about this service, in a structured way. Free. A person reads every report; nothing is run or changed automatically.
`presign_check`read-only	Paid ($0.01 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): call this before you sign. Send the transaction, token approval, EIP-712 signature (Permit, Permit2, EIP-3009 x402 payment, Seaport) or EIP-7702 authorization (type authorization: delegating the wallet to a contract, the sweeper trap) your agent is about to sign; get back green, orange or red with reason codes: who gets access, whether the spender or recipient is flagged, sanctioned (OFAC SDN) or unverified, unlimited allowances, and the token itself (honeypot, fake look-alike, high tax). On Solana (type solana, the base64 wire transaction): every instruction decoded and the transaction simulated (token account takeovers, System Assign, unlimited delegates, durable nonces, hidden owner or delegate changes). On the XRP Ledger (type xrpl, the unsigned tx JSON): account takeovers (SetRegularKey, SignerListSet, disabling the master key), fake RLUSD, partial payments, missing destination tags, trust-line and issuer risks, and DEX offers far below market. On Algorand (type algorand, base64 msgpack transaction or group in transactions): rekeys, closing the account or an asset to someone else, clawbacks, fake USDC, app update/delete/clear, simulated. Only proceed on green; on orange ask your user; never sign on red. Same as POST /v1/check. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
`presign_check_explain`read-only	Paid ($0.03 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): the same verdict and reason codes as presign_check, plus a 3 to 5 sentence plain-language explanation a person can read before approving (lang en or nl). Same as POST /v1/check/explain. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
`presign_quick_check`read-only	Free: the green/orange/red verdict only, for a transaction, token approval, EIP-712 signature, XRP Ledger transaction (type xrpl) or Algorand transaction (type algorand) your agent is about to sign. Limited to 10 calls per hour. For the reason codes and details use presign_check ($0.01); for a plain-language explanation presign_check_explain ($0.03).
`screen_wallet`read-only	Paid ($0.01 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): call this before your agent pays an address, or before accepting money from one. Send any chain's wallet address (EVM 0x..., Solana, Tron, Bitcoin, XRP Ledger, Algorand, or another currency OFAC lists). Get back green/orange/red: red SANCTIONED_ADDRESS with the SDN entry (name, programs, currency) when the address is on the OFAC SDN list, red or orange when GoPlus reports theft, phishing, laundering or mixer use (EVM). Never pay or accept funds on red. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
`token_quick_verdict`read-only	Free: the green/orange/red verdict and grade only, for a Solana or EVM token your agent is about to buy, hold or accept. Limited to 10 free calls per hour (shared with presign_quick_check). For the reasons, one-line summary and market data use token_verdict ($0.01).
`token_verdict`read-only	Paid ($0.01 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): call this before your agent buys, holds or accepts a token. Send the chain (solana, base, ethereum, arbitrum, optimism, polygon, bsc, xrpl, algorand) and the token address, mint, CURRENCY.rIssuer or Algorand asset id; get back green/orange/red, a grade (SAFE, CAUTION, RISKY, AVOID), reason codes (mint or freeze authority still active, honeypot, tax or transfer fee, LP not locked, low liquidity, new token, concentrated holders, rugged), a one-line summary, and market data (price, liquidity, market cap, 24h volume, age). Same as GET /v1/token. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.
`wallet_approvals`read-only	Paid ($0.02 via x402 in USDC on Base, Solana, Algorand or Stellar, or in RLUSD on the XRP Ledger): audit the open token approvals of a wallet on an EVM chain (base, ethereum, arbitrum, optimism, polygon, bsc) or on Solana, for example your agent's own wallet as a periodic check. Get back green/orange/red, a grade, a one-line summary and every approval with its spender. EVM, every ERC-20 allowance: flagged malicious (red), a plain wallet, on a doubt list, an unverified contract or an unlimited allowance to a spender not on the GoPlus trust list (orange), with a revoke.cash link. Solana, every SPL token delegation (Approve): a delegate on the OFAC SDN list (red), a delegate that is a plain wallet or an unlimited delegation (orange), with the token account to revoke on; Token-2022 tokens with a permanent delegate are listed too. NFT approvals are not covered. Same as GET /v1/approvals. The answer carries a signed receipt (EIP-191, bound to your arguments) that proves later which verdict you got.

Schemas: list_tools.

Similar MCP servers

More from io.github.Fizzl13

Official server.json

{
  "name": "io.github.Fizzl13/presign-guard",
  "title": "presign-guard",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://presign-guard.fizzl.eu/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.6.0",
  "repository": {
    "url": "https://github.com/Fizzl13/presign-guard",
    "source": "github"
  },
  "websiteUrl": "https://presign-guard.fizzl.eu",
  "description": "Safe to sign? EVM/Solana/XRPL/Algorand txs, permits, EIP-7702, tokens; OFAC screen: green/orange/red"
}