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MCP MCP 2025-11-25 streamable-http

🐴 Gulltoppr

io.github.portdeveloper/gulltoppr

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

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Get before/after evidence when observed tools, schemas, authentication access, availability or the endpoint changes.

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Uptime
80.0%
5 direct probes · 30d
Response
8144ms
last probe
Tools
12
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://mcp.gulltoppr.dev/mcp
Score: 100/100
Handshake verified by our own probe.
why this score
The latest probe failed: We could not connect: ReadTimeout:. The server was up for 80% of its last 30 days, so this counts as a blip and the score holds; it drops once uptime falls below 50%.
pass Answers the MCP handshake 50/50
Handshake verified earlier; the latest probe failed (see the note above).
pass Lists tools, resources or prompts 30/30
12 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
12 items in total; 3 or more earns these points.
pass Describes itself 10/10
95 characters; more than 30 earns these points.

Tools · 12

list_chains

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

runtime_metrics

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

lookup_selector

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

registry_stats

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

export_registry

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

resolve_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, t…

read_contract

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

encode_call

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

simulate

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.

prepare_tx

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 wall…

decode_tx

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.

resolve_name

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

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "\ud83d\udc34_gulltoppr": {
      "url": "https://mcp.gulltoppr.dev/mcp",
      "transport": "streamable-http"
    }
  }
}