Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Demerzels-lab/elsamultiskillagent --skill zerion-apigit clone --depth 1 https://github.com/Demerzels-lab/elsamultiskillagentWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/zerion-api)<a href="https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/zerion-api"><img src="https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/zerion-api/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/demerzels-lab/elsamultiskillagent/zerion-api"><img src="https://agentmods.dev/badge/skills/demerzels-lab/elsamultiskillagent/zerion-api.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.01091 |
| Opus 5 | $0.00000 | $0.00545 |
| Sonnet 5 | $0.00000 | $0.00218 |
| Haiku 4.5 | $0.00000 | $0.00109 |
Grade A, and why
zerion-api scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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
- Address Format: Use 0x addresses only (e.g., 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045)
- Multi-Chain: Supports EVM chains (Ethereum, Polygon, Arbitrum, Optimism, Base, BSC, etc.) and Solana
- Real-Time: All data is real-time from Zerion's indexed data
- Auth Required: API key needed - configure in MCP settings
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 154 lines · 0 tokens per session scan A a2244779eb52
zerion-api is a skill published in the GitHub repository Demerzels-lab/elsamultiskillagent (10 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,091 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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