🐴 Gulltoppr
REMOTE · MCP.GULLTOPPR.DEV
Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.
Available components
Last scanned (38 minutes ago)
Scores higher than 91% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Crypto and Web3
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability74
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1679 tokens (~139/item across 12 items; 12 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (92% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 12 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Aug 26 0
- Stability: 0.97 → pass security
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 2 Aug 26 0
- HSTS header: unverified → fail ▼ security
- Transport: fail → pass ▲ security
- Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 11 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. security
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://mcp.gulltoppr.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.gulltoppr.dev | CN=YE1,O=Let's Encrypt,C=US | 10 Oct 2026 | 8 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 68f4ea137e4990c301000b5b98d9a8fc406 |
| SANs: mcp.gulltoppr.dev | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.gulltoppr.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| gulltoppr.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.gulltoppr.dev/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.gulltoppr.dev/mcp | HTTPS enforced | 301 | https://mcp.gulltoppr.dev/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
decode_tx Explain a transaction ~137
Decode what a transaction did: delegated heimdall decode plus `decoded_call` from the resolved target ABI when available. Prefer `decoded_call` for typed function/arg names, and read its provenance.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | – | yes | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| rpc_url | string | – | Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids. |
| tx_hash | string | yes | 0x transaction hash. |
| Name | Type | Req | Description |
|---|---|---|---|
| cached | boolean | yes | – |
| chain | integer | yes | – |
| decoded | – | yes | – |
| decoded_call | – | – | – |
| provenance | object | yes | – |
| source | string | yes | – |
| tx_hash | string | yes | 0x transaction hash. |
No examples provided.
encode_call Encode a function call ~168
Encode a function call to calldata (0x…) without sending anything.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 0x contract address. |
| args | array | – | Function arguments, in order. Pass uint values as decimal strings. |
| chain | – | yes | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| function | string | yes | Function name, or full signature like "transfer(address,uint256)" if overloaded. |
| rpc_url | string | – | Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids. |
| value | string | – | Native value in wei (decimal string), for payable functions. |
| Name | Type | Req | Description |
|---|---|---|---|
| data | string | yes | Raw form: calldata (0x-prefixed hex bytes). |
| function_signature | string | yes | – |
No examples provided.
export_registry Export selector commons ~31
Return the CC0 selector commons as NDJSON. This can be large; prefer lookup_selector for normal agent workflows.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
list_chains List supported chains ~112
List viem-backed chain aliases and ids. Use filters to find testnets, default-RPC chains, or a named chain before resolving contracts.
| Name | Type | Req | Description |
|---|---|---|---|
| has_default_rpc | boolean | – | When true, only chains gulltoppr can query without rpc_url. |
| q | string | – | Search by chain id, name, alias, or native symbol; multi-word queries also match token-by-token and without whitespace. |
| testnets | boolean | – | When true, only testnets; when false, only mainnets. |
| Name | Type | Req | Description |
|---|---|---|---|
| chains | array | yes | – |
No examples provided.
lookup_selector Lookup selector commons ~60
Lookup gulltoppr-proven signatures for a 4-byte function/error selector or 32-byte event topic0. Prefer these over public 4byte guesses.
| Name | Type | Req | Description |
|---|---|---|---|
| selector | string | yes | 4-byte function/error selector or 32-byte event topic0. |
| Name | Type | Req | Description |
|---|---|---|---|
| entries | array | yes | – |
| selector | string | yes | 4-byte function/error selector or 32-byte event topic0. |
No examples provided.
prepare_tx Prepare an unsigned transaction (hand-off) ~294
Prepare a contract WRITE for the user to sign. Returns an UNSIGNED transaction, its simulation, a human-readable summary, safety metadata, warnings, a configured signing deeplink, and an EIP-1193 wallet request when signing is recommended. IMPORTANT: this tool NEVER signs or broadcasts. Present the summary + simulation + warnings to the user. Only hand them the `deeplink` or `wallet_request` when `safety.signing_recommended` is true. If `safety.risk_level` is high or blocked, make that explicit; blocked means do not send.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 0x contract address. |
| args | array | – | Function arguments, in order. Pass uint values as decimal strings. |
| chain | – | yes | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| from | string | yes | The sender address (the user's wallet). No key is needed — nothing is signed. |
| function | string | yes | Function name, or full signature like "transfer(address,uint256)" if overloaded. |
| rpc_url | string | – | Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids. |
| value | string | – | Native value in wei (decimal string), for payable functions. |
| Name | Type | Req | Description |
|---|---|---|---|
| deeplink | string | yes | – |
| human_summary | string | yes | – |
| safety | object | yes | – |
| simulation | object | yes | – |
| unsigned_tx | object | yes | – |
| wallet_request | – | – | – |
| warnings | array | yes | – |
No examples provided.
read_contract Read a contract (view/pure) ~161
Call a view/pure function and get the decoded result. No wallet, no cost. Rejects state-mutating functions.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 0x contract address. |
| args | array | – | Function arguments, in order. Pass uint values as decimal strings. |
| chain | – | yes | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| function | string | yes | Function name, or full signature like "transfer(address,uint256)" if overloaded. |
| rpc_url | string | – | Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids. |
| Name | Type | Req | Description |
|---|---|---|---|
| decoded | array | yes | – |
| function_signature | string | yes | – |
| raw | string | yes | Raw form: calldata (0x-prefixed hex bytes). |
No examples provided.
registry_stats Registry stats ~22
Read selector commons counts by proof grade and bytecode-match index size.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| bytecodes | integer | yes | – |
| selectors | object | yes | – |
No examples provided.
resolve_abi Resolve contract ABI ~315
Resolve a contract's interface from chain + address via a fallback ladder (Etherscan → Sourcify → proxy → heimdall decompile → 4byte). Returns a compact capability manifest (read vs write functions, the 'buttons'), proxy chain, token metadata, and PROVENANCE. ALWAYS read `provenance`: a `decompiled` ABI has synthetic function names — treat it with care and confirm intent before writing. Partial, proxy, and bytecode-match results lead with a WARNING before the JSON. The compact manifest/provenance is also returned as structuredContent. Use method_q/method_kind/method_limit for large ABIs. Raw ABI is omitted from MCP output to save tokens; use REST/SDK resolve_abi with include_abi=true if needed.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | 0x contract address. |
| chain | – | yes | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| method_kind | string | – | Restrict manifest methods to read, write, or all. |
| method_limit | integer | – | Maximum number of manifest methods to return after filtering. |
| method_q | string | – | Case-insensitive manifest method search across names, signatures, parameters, outputs, and hints. |
| rpc_url | string | – | Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids. |
| Name | Type | Req | Description |
|---|---|---|---|
| abi_for | – | yes | – |
| abi_omitted | boolean | yes | – |
| address | string | yes | 0x contract address. |
| cached | boolean | yes | – |
| chain | integer | yes | – |
| interface | object | yes | – |
| provenance | object | yes | – |
| proxy | object | – | – |
| token | object | – | – |
No examples provided.
resolve_name Resolve ENS/Basenames ⇄ address ~104
Resolve an ENS/Basename to an address, or an address to its primary ENS/Basename. Pass chain=base for Basenames.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | – | – | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| name | string | yes | An ENS/Basename (vitalik.eth, name.base.eth) or a 0x address. |
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | 0x contract address. |
| name | string | – | – |
No examples provided.
runtime_metrics Runtime metrics ~24
Read process-local resolver/rung/RPC counters for smoke checks and reliability dashboards.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| metrics | object | yes | – |
| uptime_seconds | integer | yes | – |
No examples provided.
simulate Simulate a transaction ~251
Simulate a call and return success, gas, decoded return, and best-effort state diff / asset changes / logs. Provide a high-level call (address + function + args) or raw (to + data), never both.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | 0x contract address. |
| args | array | – | Function arguments, in order. Pass uint values as decimal strings. |
| chain | – | yes | Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id. |
| data | string | – | Raw form: calldata (0x-prefixed hex bytes). |
| from | string | yes | The sender address (the user's wallet). No key is needed — nothing is signed. |
| function | string | – | Function name, or full signature like "transfer(address,uint256)" if overloaded. |
| rpc_url | string | – | Override HTTP(S) RPC URL. Required for chains with no default (e.g. local/31337) or custom EVM chain ids. |
| to | – | – | Raw form: target address. |
| value | string | – | Native value in wei (decimal string), for payable functions. |
| Name | Type | Req | Description |
|---|---|---|---|
| asset_changes | array | yes | – |
| gas_used | integer | yes | – |
| logs | array | yes | – |
| return_value | object | – | – |
| revert | object | – | – |
| state_diff | array | yes | – |
| success | boolean | yes | – |
No examples provided.
How do I install the 🐴 Gulltoppr MCP server?
🐴 Gulltoppr is a hosted endpoint at https://mcp.gulltoppr.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.gulltoppr.dev
claude mcp add --transport http portdeveloper-gulltoppr 'https://mcp.gulltoppr.dev/mcp'
What is the 🐴 Gulltoppr MCP server?
🐴 Gulltoppr is an MCP server listed in the public MCP registry as io.github.portdeveloper/gulltoppr. Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs. This page covers its hosted endpoint (https://mcp.gulltoppr.dev/mcp).
Is the 🐴 Gulltoppr MCP server safe to use?
🐴 Gulltoppr scores 85 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the 🐴 Gulltoppr MCP server expose?
🐴 Gulltoppr exposes 12 tools: list_chains, runtime_metrics, lookup_selector, registry_stats, export_registry, and 7 more. Their descriptions and schemas cost roughly 1,679 tokens of context every time the server is loaded.
Does the 🐴 Gulltoppr MCP server require authentication?
No. We connected to 🐴 Gulltoppr without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the 🐴 Gulltoppr MCP server still maintained?
🐴 Gulltoppr is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.