USDC & RPC Reference (free)

app.netlify.x402-preflight-grokbotPublished by x402-preflight-grokbot.netlify.appOfficial publisherv1.0.0Updated Oct 30, 2026

Free read-only data: verified USDC addresses and EIP-712 domains, measured RPC eth_getLogs limits.

VerifiedStreamable HTTPWeb executableFinance Developer Tools

Server details

Identifier: app.netlify.x402-preflight-grokbot/usdc-rpc-reference
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Oct 30, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to x402-preflight-grokbot.netlify.app, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

Free read-only reference server giving assistants verified USDC token details per chain and measured public RPC eth_getLogs limits.

What you can do: Look up USDC token details per chain: contract address, decimals, EIP-712 domain and EIP-3009 support, by chain id or slug, or list all chains
Check measured eth_getLogs block-range limits, latency, archive support and error messages for free public RPC endpoints, optionally filtered by chain
List the site's pay-per-call x402 HTTP endpoints (USDC on Base), such as a webpage-to-text reader with prompt injection scanning and an x402 endpoint preflight check
When to use it: Useful when an assistant needs trustworthy USDC contract and EIP-712 details across chains, or wants to know how far back a free public RPC will serve eth_getLogs before writing queries or x402 payment code.
Requirements: Remote streamable HTTP endpoint; no authentication, environment variables or headers declared. Network access to the provider's site is needed.

Before you install

The data is read-only reference material, but the listed x402 endpoints are pay-per-call and involve USDC payments on Base; the server itself does not perform payments. Verify token addresses and limits against the chain before relying on them.

Installation

In SourceWeft

Open USDC & RPC Reference (free) in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/app.netlify.x402-preflight-grokbot%2Fusdc-rpc-reference/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "usdc-rpc-reference-free": {
      "type": "http",
      "url": "https://x402-preflight-grokbot.netlify.app/mcp"
    }
  }
}

Tools

usdc_token_info

USDC token info by chain

Native USDC contract address, decimals, EIP-712 domain (name, version, domainSeparator) and EIP-3009 support for a chain, verified onchain. Pass chain as a chain id (8453) or slug (base). Omit chain to list all chains.

Parameterschain

rpc_getlogs_limits

Public RPC eth_getLogs limits

Measured eth_getLogs block-range limits, latency, archive support and error messages for free public RPC endpoints. Pass chain (id or slug) to filter.

Parameterschain

paid_x402_tools

Paid x402 tools on this site

Lists the pay-per-call x402 HTTP endpoints on this site (USDC on Base): Safe Read (webpage to clean text with a prompt injection scan), x402 Preflight (check an x402 endpoint before paying), and the x402 Seller Field Guide.

Takes no parameters.

Version history

v1.0.0LatestOct 30, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.