Zerion API

Query crypto wallet portfolios, transactions, DeFi positions, NFTs, token prices, and gas fees across EVM chains and Solana using Zerion's API.

Security Scan

The skill appears to be an instruction-only wrapper for Zerion's MCP API (which legitimately requires an API key), but the package metadata and registry record omit the required credential and the source/author information is inconsistent — verify origin and key handling before installing.

Purpose & Capability

The SKILL.md clearly describes a Zerion MCP API integration (portfolio, tx history, prices, NFTs, etc.), which is coherent with the skill name. HOWEVER the registry metadata lists no required credentials or primaryEnv while the SKILL.md repeatedly states an API key is required and shows how to configure it in MCP settings. Also the registry's source/homepage are missing while README claims an author and an npx install path (abishekdharshan/zerion-api) that doesn't match the registry owner ID — this mismatch should be resolved.

Instruction Scope

The runtime instructions stay within the stated purpose: they describe queries to Zerion's MCP HTTP endpoint (https://developers.zerion.io/mcp) and show example request/config JSON. The SKILL.md does not instruct the agent to read arbitrary local files or unrelated env vars. The only scope caveat: it tells the user to add an API key to the MCP configuration — that configuration is where secrets will be stored and accessed by the skill, so confirm how your platform stores MCP config.

Install Mechanism

This is an instruction-only skill with no install spec and no code files, so nothing is written to disk by an installer here. That reduces technical risk. README's npx install suggestion points to an external package — if you plan to run that, inspect that package separately before installing.

Credentials

The SKILL.md requires an API key (Authorization: Bearer YOUR_API_KEY) to access Zerion's MCP, but the registry metadata lists no required env vars or primary credential. This discrepancy is important: the skill will need a credential to function, but the package metadata doesn't declare it, so automated permission reviews may miss it. Confirm what exact secret(s) the skill needs, where they are stored, and that you only provide a least-privilege, revocable/read-only key.

Persistence & Privilege

The skill does not request always:true and has no install hooks, code, or config-writing steps in the SKILL.md. It only instructs how to add an API key to MCP config. There is no evidence it modifies other skills or system-wide settings.

What to consider before installing

Before installing or enabling: 1) Confirm the skill's origin — the registry record shows no homepage/source but README names an author and an npx install path; verify that the package you install comes from the expected repository/author. 2) Be aware an API key is required even though the metadata doesn't list one; make sure you supply a least-privilege, revocable/read-only Zerion API key and understand where MCP configuration stores that key. 3) Inspect any external package (e.g., abishekdharshan/zerion-api) referenced in README before running npx or installing. 4) Verify the skill only calls the documented endpoint (https://developers.zerion.io/mcp) and not other unexpected hosts. 5) If you need stronger assurance, request a provenance check from the publisher (source repo, release tags) or test with a throwaway key and non-sensitive wallet addresses first.

Zerion API Skill

Query crypto wallet data using the Zerion API MCP server.

Overview

This skill provides access to Zerion's interpreted crypto wallet data through MCP tools. Supports EVM chains (Ethereum, Polygon, Arbitrum, Optimism, Base, BSC, and 50+ more) and Solana.

Note: API key required for authentication - get yours at https://developers.zerion.io

Available Data

Data Type	Description
Portfolio	Total wallet value, breakdown by chain
Transactions	Full transaction history with parsed actions
PnL	Profit/loss calculations
Positions	DeFi positions, staking, lending
Token Prices	Real-time pricing and historical charts
NFTs	Collections and individual NFT data
Gas Prices	Current gas prices across chains

Common Queries

Portfolio Analysis

Get the portfolio for wallet 0x1234...
Show total value and breakdown by chain for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045

Transaction History

Show recent transactions for 0x1234...
Get transaction history for 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 in the last 30 days

DeFi Positions

Show all DeFi positions for 0x1234...
What protocols is 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 using?

Token Analysis

Get current price of ETH
Show price chart for USDC over the last 7 days
Compare ETH price to SOL

NFT Data

Show NFT collections owned by 0x1234...
Get details for Bored Ape #1234
List all NFTs in wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045

Gas Prices

What are current gas prices on Ethereum?
Compare gas prices across all EVM chains
Show Solana transaction fees

Tips

1. Address Format: Use 0x addresses only (e.g., 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045)
2. Multi-Chain: Supports EVM chains (Ethereum, Polygon, Arbitrum, Optimism, Base, BSC, etc.) and Solana
3. Real-Time: All data is real-time from Zerion's indexed data
4. Auth Required: API key needed - configure in MCP settings

Example Workflows

Customer Research

Analyze the portfolio composition of 0x1234...
What DeFi protocols are they using?
Show their transaction patterns over the last month
Calculate their PnL across all positions

Token Analysis

Get the current price of our governance token
Compare it to historical prices
Show top holders by wallet address

Competitive Analysis

What wallets are using Protocol X?
What's the average portfolio size?
What other protocols do they use?
Show cross-chain activity patterns

Multi-Chain Analysis

Compare wallet activity on Ethereum vs Solana
Show portfolio breakdown across all EVM chains
Which chains have the most DeFi activity?

MCP Server Details

URL: https://developers.zerion.io/mcp Type: Remote HTTP MCP server Auth: API key required (get at https://developers.zerion.io) Docs: https://developers.zerion.io/reference/building-with-ai

Setup

1. Get your API key at https://developers.zerion.io
2. Add to your MCP configuration:

   {
     "zerion": {
       "url": "https://developers.zerion.io/mcp",
       "headers": {
         "Authorization": "Bearer YOUR_API_KEY"
       }
     }
   }
   

Related Resources

• API Docs: https://developers.zerion.io
• Zerion Dashboard: https://dashboard.zerion.io
• llms.txt: https://developers.zerion.io/llms.txt (for keeping AI tools current)

When to Use This Skill

Use this skill when:

• Researching wallet addresses (0x format)
• Analyzing DeFi positions and protocols
• Getting real-time token prices across chains
• Investigating transaction patterns
• Exploring NFT holdings
• Checking gas prices across EVM chains and Solana
• Validating customer or competitor data
• Calculating portfolio PnL