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ExpertVagabond

Infrastructure · Utility

Verified Builder

MCP server for Robinhood Chain (Arbitrum Orbit L2, chainId 4663) — 24 tools: JSON-RPC reads, token discovery, EIP-3009/USDG tooling, unsigned tx builders. Never holds keys.

ShippingLast ship 1d ago
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Latest ship

Active development: 12 commits across 1 contributor

Code ActivitySource linked

7 active day(s) in ExpertVagabond/robinhood-chain-mcp.

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Builder activity

Meaningful, source-backed updates per week. Commits are aggregated, not counted individually.

Build timeline

  1. Active development: 11 commits across 2 contributors

    Code ActivitySource linked

    6 active day(s) in ExpertVagabond/robinhood-chain-mcp.

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  2. Active development: 9 commits across 2 contributors

    Code ActivitySource linked

    4 active day(s) in ExpertVagabond/robinhood-chain-mcp.

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  3. Active development: 8 commits across 2 contributors

    Code ActivitySource linked

    5 active day(s) in ExpertVagabond/x402-facilitator-evm.

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  4. Active development: 8 commits across 2 contributors

    Code ActivitySource linked

    3 active day(s) in ExpertVagabond/robinhood-chain-mcp.

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  5. v0.1.0 — verify-only facilitator

    Github ReleaseSource verified

    Initial release. Verify-only x402 facilitator for Robinhood Chain (eip155:4663), settling in USDG. 🟢 Live: https://x402-facilitator-evm.purplesquirrelnetworks.workers.dev The hosted x402.org facilitator serves only Base Sepolia; this one serves Robinhood Chain. USDG (the chain has no canonical USDC) implements EIP-3009, established by probing revert selectors since USDG is an EIP-2535 Diamond. Scope: /verify only. No /settle — that needs a funded hot signer and is deliberately out of scope; the service holds no keys and CI enforces that invariant. V

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  6. v0.1.0 — 105 tools

    Github ReleaseSource verified

    Initial release. 105 tools for Robinhood Chain (Arbitrum Orbit L2, chainId 4663). Read-and-build only — no keys, no signing, no broadcasting. Highlights - Robinhood Stock Tokens: impostor detection via uiMultiplier(), corporate-action multiplier, transfer blocklist - Uniswap v4: pool state via StateView (verified on-chain, not from tags) - Chainlink oracles: stock prices by ticker, equity-hours staleness handling - EIP-3009/USDG: Diamond-aware capability probing, gasless authorization builders - Arbitrum Orbit precompiles, ERC-20/721/1155, x402 payment helpers, offline utilities Ever

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Research notes

Written by Dawnscan researchers and reviewed before publishing. Commentary with sources — not the project's own claims, and not evidence of shipping.

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