# `io.github.portdeveloper/gulltoppr` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.github.portdeveloper/gulltoppr
- JSON: https://anlyon.dev/api/v1/servers/io.github.portdeveloper/gulltoppr
- Version: 0.1.2 (active)
- Publisher: io.github.portdeveloper (GitHub account)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/portdeveloper/gulltoppr
- Metadata from the official MCP Registry, synced 2026-10-21T18:45:29.303Z

Title and description, as the publisher wrote them:

```untrusted-server-text
🐴 Gulltoppr
Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.
```

Scanned 2026-10-21T19:26:22.610Z over streamable-http.

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

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 1 | ask |
| Changes things | write | 4 | ask |
| Only reads | read | 7 | allow |

## Findings

- **warn** Annotations that disagree with the tool in `read_contract` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "read_contract" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "read_contract" says "read": a word for reading.
```

- **warn** Annotations that disagree with the tool in `encode_call` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "encode_call" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "encode_call" says "call": a word for a change.
```

- **warn** Annotations that disagree with the tool in `simulate` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "simulate" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.
```


## Can't be undone (1)

Sends, pays, publishes or merges: once done, it cannot be taken back. Claude Code: ask.

### `simulate`

- 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 annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
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.
```

## Changes things (4)

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

### `decode_tx`

- 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:

```untrusted-server-text
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.
```

### `encode_call`

- 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 annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Encode a function call to calldata (0x…) without sending anything.
```

### `prepare_tx`

- Nothing in its name or description says what it does, so it is counted as a write.

Description, as the server wrote it:

```untrusted-server-text
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.
```

### `read_contract`

- 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 annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Call a view/pure function and get the decoded result. No wallet, no cost. Rejects state-mutating functions.
```

## Only reads (7)

Looks things up and changes nothing. Claude Code: allow.

### `export_registry`

- The description's first verb is "return": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Return the CC0 selector commons as NDJSON. This can be large; prefer lookup_selector for normal agent workflows.
```

### `list_chains`

- The name "list_chains" says "list": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
List viem-backed chain aliases and ids. Use filters to find testnets, default-RPC chains, or a named chain before resolving contracts.
```

### `lookup_selector`

- The name "lookup_selector" says "lookup": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Lookup gulltoppr-proven signatures for a 4-byte function/error selector or 32-byte event topic0. Prefer these over public 4byte guesses.
```

### `registry_stats`

- The description's first verb is "read": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Read selector commons counts by proof grade and bytecode-match index size.
```

### `resolve_abi`

- The name "resolve_abi" says "resolve": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
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.
```

### `resolve_name`

- The name "resolve_name" says "resolve": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Resolve an ENS/Basename to an address, or an address to its primary ENS/Basename. Pass chain=base for Basenames.
```

### `runtime_metrics`

- The description's first verb is "read": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Read process-local resolver/rung/RPC counters for smoke checks and reliability dashboards.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `gulltoppr`:

```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": []
  }
}
```