SendCheck — EVM address verification (x402)
Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.
MCP server · by api.pennyforge.org
About
SendCheck — EVM address verification (x402) is an MCP server published by api.pennyforge.org. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http sendcheck https://api.pennyforge.org/mcp
[mcp_servers.sendcheck]
url = "https://api.pennyforge.org/mcp"
{
"mcpServers": {
"sendcheck": {
"url": "https://api.pennyforge.org/mcp"
}
}
}
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.0.0 | Forks (GitHub): 0 Stars (GitHub): 0 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Check an EVM address on Base before sending funds: safe/caution/danger. Pays per call via x402.
-
x402 USDC-paid MCP tools: 7-chain transaction checks, PDF evidence and DNS/TLS audits.
-
TrustAgent — counterparty verification
Is this address safe to pay? OFAC sanctions, ERC-8004 reputation, contract analysis.
-
EVM token risk checks, x402 payability check for sellers, address classifier and live gas.
-
email-validator io.github.ryuamarines/email-validator
Validates email syntax and MX records. x402 payment required (testnet USDC).
-
Real-time exploit-exposure risk check for EVM wallets, paid per query via x402 (USDC on Base).
-
evmscope io.github.calintzy/evmscope
EVM blockchain intelligence toolkit for AI agents. 20 tools across 5 chains. Zero config.
-
Check a Base contract, transaction or web page before you act. Free pricing, paid per call in USDC.
-
On-chain toxicity and spam transaction detector for Web3 wallets.
-
Use before signing an EVM tx or EIP-712 message: risk flags + verdict. Informational, no simulation
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
Solana token safety scanner behind x402 micropayments. Checks mint/freeze authority, holder concentration, liquidity, LP locks, honeypot detection, metadata mutability, token age…
-
Agent safety infrastructure (RiskOracle, NoLeak, MemGuard, SecureExec, FlowCore) and real-time DELPHI Oracle intelligence signals. x402 USDC micropayments on Base Mainnet. 19…
-
Offline Ed25519 receipt verifier — checks signed decision receipts, agent manifests, and audit bundles without contacting any server.
-
Inspect, debug, and test Machine Payments Protocol (HTTP 402) endpoints directly from Claude Code. Parses spec-compliant WWW-Authenticate challenges, discovers MPP endpoints on…
-
Build and manage automation workflows from Claude Code. Monitor smart contracts, track on-chain events, configure scheduled tasks, and connect notifications across Discord…
Has a listing on Claude Code: claude-plugins-official (5)
-
Ship stablecoin apps faster. Best-practice skills for USDC payments, cross-chain transfers, wallets, and smart contracts — plus Circle's MCP server for real-time SDK and…
-
The Vanta plugin connects Claude Code to Vanta's security and compliance platform through the Vanta MCP server. It combines Vanta's test-specific remediation intelligence with…
-
Build Airwallex payment integrations in your own codebase. Generates the checkout, card-element, onboarding, and subscription-billing code for an Airwallex integration and wires…
-
Carta Cap Table plugin — skills and hooks for querying cap tables, grants, SAFEs, 409A valuations, waterfall scenarios, and more
-
Set up endorctl and use Endor Labs to scan, prioritize, and fix security risks across your software supply chain
Has a listing on Claude: knowledge-work-plugins (5)
-
The Vanta plugin connects Claude Code to Vanta's security and compliance platform through the Vanta MCP server. It combines Vanta's test-specific remediation intelligence with…
-
Carta Cap Table plugin — skills and hooks for querying cap tables, grants, SAFEs, 409A valuations, waterfall scenarios, and more
-
Bring Airwallex's global financial infrastructure to Claude. Orchestrate actions across your account in plain language, e.g., set up invoices from a PO, onboard suppliers from…
-
Financial analysis skills powered by Daloopa's institutional-grade data
-
Carta Investors plugin — skills for querying investor data, performance benchmarks, regulatory reporting, AGM deck generation, brand extraction, and more via the Carta MCP Server.
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Codex Security workflows for security scans, analysis, and investigation.
-
Develop your payments integration faster with the ability to create products, prices, and payment links directly in ChatGPT. Run your business from ChatGPT with the ability to…
-
Public equity investing workflows for listed-company research, earnings analysis, valuation, model updates, long/short pitches, catalysts, thesis tracking, ETF/index and…
-
Available for US1 customers only. Analyze, investigate, and act on your Datadog telemetry directly from ChatGPT using natural language. Ask questions about your production…
-
Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.
Has a listing on Community GitHub marketplaces (5)
-
Agent skill for BlockVectra: keyless EVM JSON-RPC, Data API, programmatic sign-up, pricing and top-up.
-
Install and operate Industrial Sentinel for continuous treasury, wallet, transaction and payment monitoring with bounded x402 spend.
-
Lead validation over MCP: KVK/KBO register, EU VAT, sanctions and email checks with sources.
-
Read-only tools for live Midnight networks: health, transactions, DUST, errors and example code
-
agentforge io.github.acarchidi/agentforge
DeFi safety layer for AI agents: wallet safety, token risk, tx decode/simulate. 20 tools.
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Three-layer verification pipeline for AI output. Extracts claims, finds sources, and flags hallucination risks so humans can verify before acting.
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
-
Visualizes live session AI-credit usage as a Pac-Man board with pellets, ghosts, fruit milestones, and game-over limits.
-
Accept payments and grow your business. Stripe's agent plugin includes best practices, upgrade guidance, and our MCP server.
-
Helps GitHub Copilot investigate mobile app telemetry, diagnose crashes, manage [bitdrift](bitdrift.ai) workflows and dashboards, integrate the Capture SDK into iOS, Android, and…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
Advanced Security plugin for GitHub Copilot.
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Bring Azure DevOps work-item, repository, and pull-request workflows into GitHub Copilot.
-
workiq-productivity
WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.
Has a listing on Cursor: cursor/plugins (5)
-
Check balances, get quotes, and preview or place trades.
-
CLI-backed repo compatibility scans plus agents that audit startup, validation, and docs against reality.
-
Let Grok Bot reach MCP servers on your private Tailscale network. Sign in to Tailscale to connect your tailnet; Grok Bot joins it as one tagged device and only reaches the hosts…
-
Enrich people and companies, run AI research agents.
-
Query expenses, travel bookings, policies, and cards.
Has a listing on Docker MCP Catalog (5)
-
A Model Context Protocol (MCP) server exposing Bitcoin blockchain data through the Maestro API platform. Provides tools to explore blocks, transactions, addresses, inscriptions…
-
OpenZeppelin Stellar Contracts
Access to OpenZeppelin Stellar Contracts.
-
Access to OpenZeppelin Stylus Contracts.
-
OpenZeppelin Solidity Contracts
Access to OpenZeppelin Solidity Contracts.
-
Tools for cross-border payments, taxes, and compliance.
Has a listing on Official MCP Registry (5)
-
Check an EVM address on Base before sending funds: safe/caution/danger. Pays per call via x402.
-
x402 USDC-paid MCP tools: 7-chain transaction checks, PDF evidence and DNS/TLS audits.
-
TrustAgent — counterparty verification
Is this address safe to pay? OFAC sanctions, ERC-8004 reputation, contract analysis.
-
EVM token risk checks, x402 payability check for sellers, address classifier and live gas.
-
email-validator io.github.ryuamarines/email-validator
Validates email syntax and MX records. x402 payment required (testnet USDC).
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Is this your plugin?
Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.