# 🐴 Gulltoppr (remote · mcp.gulltoppr.dev)

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

- Trust score: 65/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.gulltoppr.dev`: 65/100 (this document), [markdown](https://verifymcp.io/servers/portdeveloper-gulltoppr/mcp.md), [page](https://verifymcp.io/servers/portdeveloper-gulltoppr/mcp)

## Channel facts

- Endpoint: `https://mcp.gulltoppr.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.2`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - 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.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (good).
  - 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.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (92% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

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

### Codex

```toml
[mcp_servers.portdeveloper-gulltoppr]
url = "https://mcp.gulltoppr.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "portdeveloper-gulltoppr": {
      "type": "remote",
      "url": "https://mcp.gulltoppr.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add portdeveloper-gulltoppr --url https://mcp.gulltoppr.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  portdeveloper-gulltoppr:
    url: "https://mcp.gulltoppr.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "portdeveloper-gulltoppr": {
      "type": "http",
      "url": "https://mcp.gulltoppr.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 64, +10)

- [security regression] HSTS header: unverified → fail
- [security improvement] 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.

### 2026-08-01 (score 54, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 53, −10)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 63, +11)

- [security regression] HSTS header: unverified → fail
- [security improvement] 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.

### 2026-07-28 (score 52, −10)

- [security improvement] TLS certificate: unverified → pass
- [functional improvement] Schema quality: 162 → 139
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Stability: unverified → 0.07
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Tool coverage: 92
- [functional] Schema quality: excellent → good

### 2026-07-27 (score 62, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 62)

First indexed and scored.

## MCP tools (12)

### `list_chains` (~112 tokens)

List supported chains

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

Input parameters:

- `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.

Output parameters:

- `chains` (array)

### `runtime_metrics` (~24 tokens)

Runtime metrics

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

Output parameters:

- `metrics` (object)
- `uptime_seconds` (integer)

### `lookup_selector` (~60 tokens)

Lookup selector commons

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

Input parameters:

- `selector` (string, required): 4-byte function/error selector or 32-byte event topic0.

Output parameters:

- `entries` (array)
- `selector` (string): 4-byte function/error selector or 32-byte event topic0.

### `registry_stats` (~22 tokens)

Registry stats

Read selector commons counts by proof grade and bytecode-match index size.

Output parameters:

- `bytecodes` (integer)
- `selectors` (object)

### `export_registry` (~31 tokens)

Export selector commons

Return the CC0 selector commons as NDJSON. This can be large; prefer lookup_selector for normal agent workflows.

### `resolve_abi` (~315 tokens)

Resolve contract ABI

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.

Input parameters:

- `address` (string, required): 0x contract address.
- `chain` (required): 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.

Output parameters:

- `abi_for`
- `abi_omitted` (boolean)
- `address` (string): 0x contract address.
- `cached` (boolean)
- `chain` (integer)
- `interface` (object)
- `provenance` (object)
- `proxy` (object)
- `token` (object)

### `read_contract` (~161 tokens)

Read a contract (view/pure)

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

Input parameters:

- `address` (string, required): 0x contract address.
- `args` (array): Function arguments, in order. Pass uint values as decimal strings.
- `chain` (required): Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.
- `function` (string, required): 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.

Output parameters:

- `decoded` (array)
- `function_signature` (string)
- `raw` (string): Raw form: calldata (0x-prefixed hex bytes).

### `encode_call` (~168 tokens)

Encode a function call

Encode a function call to calldata (0x…) without sending anything.

Input parameters:

- `address` (string, required): 0x contract address.
- `args` (array): Function arguments, in order. Pass uint values as decimal strings.
- `chain` (required): Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.
- `function` (string, required): 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.

Output parameters:

- `data` (string): Raw form: calldata (0x-prefixed hex bytes).
- `function_signature` (string)

### `simulate` (~251 tokens)

Simulate a transaction

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.

Input parameters:

- `address` (string): 0x contract address.
- `args` (array): Function arguments, in order. Pass uint values as decimal strings.
- `chain` (required): 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, required): 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.

Output parameters:

- `asset_changes` (array)
- `gas_used` (integer)
- `logs` (array)
- `return_value` (object)
- `revert` (object)
- `state_diff` (array)
- `success` (boolean)

### `prepare_tx` (~294 tokens)

Prepare an unsigned transaction (hand-off)

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.

Input parameters:

- `address` (string, required): 0x contract address.
- `args` (array): Function arguments, in order. Pass uint values as decimal strings.
- `chain` (required): Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.
- `from` (string, required): The sender address (the user's wallet). No key is needed — nothing is signed.
- `function` (string, required): 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.

Output parameters:

- `deeplink` (string)
- `human_summary` (string)
- `safety` (object)
- `simulation` (object)
- `unsigned_tx` (object)
- `wallet_request`
- `warnings` (array)

### `decode_tx` (~137 tokens)

Explain a transaction

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.

Input parameters:

- `chain` (required): 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, required): 0x transaction hash.

Output parameters:

- `cached` (boolean)
- `chain` (integer)
- `decoded`
- `decoded_call`
- `provenance` (object)
- `source` (string)
- `tx_hash` (string): 0x transaction hash.

### `resolve_name` (~104 tokens)

Resolve ENS/Basenames ⇄ address

Resolve an ENS/Basename to an address, or an address to its primary ENS/Basename. Pass chain=base for Basenames.

Input parameters:

- `chain`: Chain alias from GET /v1/chains (for example "ethereum", "base", "monad", "bsc") or numeric EIP-155 chain id.
- `name` (string, required): An ENS/Basename (vitalik.eth, name.base.eth) or a 0x address.

Output parameters:

- `address` (string): 0x contract address.
- `name` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/portdeveloper-gulltoppr/mcp#diagnostics

## Score history

- 2026-08-03: 65
- 2026-08-02: 64
- 2026-08-01: 54
- 2026-07-31: 53
- 2026-07-30: 63
- 2026-07-29: 52
- 2026-07-28: 52
- 2026-07-27: 62
- 2026-07-26: 62

## Links

- Remote endpoint: https://mcp.gulltoppr.dev/mcp
- Repository: https://github.com/portdeveloper/gulltoppr
- Changelog RSS feed: https://verifymcp.io/servers/portdeveloper-gulltoppr/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/portdeveloper-gulltoppr/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/portdeveloper-gulltoppr/mcp