🐴 Gulltoppr

by portdeveloper · remote · no sign-in to list tools · v0.1.2 · published by GitHub user portdeveloper

Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.

Final · 1Changes · 4

Compare Registry entry

12 tools: 1 do something that can't be undone, 4 change things and 7 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone1Claude Code: ask: see these tools
Changes things4Claude Code: ask: see these tools
Only reads7Claude Code: allow: see these tools

3 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http gulltoppr https://mcp.gulltoppr.dev/mcp

Findings

Matches of fixed checks, with the text they matched.

3 warn

Warnread_contract
The server marks "read_contract" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "read_contract" says "read": a word for reading.
What this check looks for
Warnencode_call
The server marks "encode_call" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "encode_call" says "call": a word for a change.
What this check looks for
Warnsimulate
The server marks "simulate" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

12 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

simulateSimulate a call and return success, gas, decoded return, and best-effort state diff / asset changes / logs.1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "simulate" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

Changes things 4Creates or changes something that can be changed back.Claude Code: ask

decode_txDecode what a transaction did: delegated heimdall decode plus `decoded_call` from the resolved target ABI when available.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
encode_callEncode a function call to calldata (0x…) without sending anything.1 finding
Why it is in this group
- The name "encode_call" says "call": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "encode_call" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "encode_call" says "call": a word for a change.
  What this check looks for
Description, as the server wrote it
Encode a function call to calldata (0x…) without sending anything.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
prepare_txPrepare a contract WRITE for the user to sign.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- openWorldHint: true
read_contractCall a view/pure function and get the decoded result.1 finding
Why it is in this group
- The name "read_contract" says "read": a word for reading.
- The description's first verb is "call": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "read_contract" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "read_contract" says "read": a word for reading.
  What this check looks for
Description, as the server wrote it
Call a view/pure function and get the decoded result. No wallet, no cost. Rejects state-mutating functions.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

Only reads 7Looks things up and changes nothing.Claude Code: allow

export_registryReturn the CC0 selector commons as NDJSON.No findings
Why it is in this group
- The description's first verb is "return": a word for reading.
Description, as the server wrote it
Return the CC0 selector commons as NDJSON. This can be large; prefer lookup_selector for normal agent workflows.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
list_chainsList viem-backed chain aliases and ids.No findings
Why it is in this group
- The name "list_chains" says "list": a word for reading.
Description, as the server wrote it
List viem-backed chain aliases and ids. Use filters to find testnets, default-RPC chains, or a named chain before resolving contracts.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
lookup_selectorLookup gulltoppr-proven signatures for a 4-byte function/error selector or 32-byte event topic0.No findings
Why it is in this group
- The name "lookup_selector" says "lookup": a word for reading.
Description, as the server wrote it
Lookup gulltoppr-proven signatures for a 4-byte function/error selector or 32-byte event topic0. Prefer these over public 4byte guesses.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
registry_statsRead selector commons counts by proof grade and bytecode-match index size.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read selector commons counts by proof grade and bytecode-match index size.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
resolve_abiResolve a contract's interface from chain + address via a fallback ladder (Etherscan → Sourcify → proxy → heimdall decompile → 4byte).No findings
Why it is in this group
- The name "resolve_abi" says "resolve": a word for reading.
Description, as the server wrote it
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.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
resolve_nameResolve an ENS/Basename to an address, or an address to its primary ENS/Basename.No findings
Why it is in this group
- The name "resolve_name" says "resolve": a word for reading.
Description, as the server wrote it
Resolve an ENS/Basename to an address, or an address to its primary ENS/Basename. Pass chain=base for Basenames.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
runtime_metricsRead process-local resolver/rung/RPC counters for smoke checks and reliability dashboards.No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read process-local resolver/rung/RPC counters for smoke checks and reliability dashboards.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.2. Values in angle brackets are yours to fill in.

claude mcp add --transport http gulltoppr https://mcp.gulltoppr.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__gulltoppr__list_chains",
      "mcp__gulltoppr__runtime_metrics",
      "mcp__gulltoppr__lookup_selector",
      "mcp__gulltoppr__registry_stats",
      "mcp__gulltoppr__export_registry",
      "mcp__gulltoppr__resolve_abi",
      "mcp__gulltoppr__resolve_name"
    ],
    "ask": [
      "mcp__gulltoppr__read_contract",
      "mcp__gulltoppr__encode_call",
      "mcp__gulltoppr__simulate",
      "mcp__gulltoppr__prepare_tx",
      "mcp__gulltoppr__decode_tx"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as gulltoppr. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.portdeveloper/gulltoppr/changes.xml

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Anlyon alternative

5 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Source: MCP Registry · repository. Synced Oct 21, 2026, 18:45 UTC.

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