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 BlockRunAI/blockrun-mcp --skill crypto-datagit clone --depth 1 https://github.com/BlockRunAI/blockrun-mcpWrote 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/blockrunai/blockrun-mcp/crypto-data)<a href="https://agentmods.dev/skills/blockrunai/blockrun-mcp/crypto-data"><img src="https://agentmods.dev/badge/skills/blockrunai/blockrun-mcp/crypto-data/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/blockrunai/blockrun-mcp/crypto-data"><img src="https://agentmods.dev/badge/skills/blockrunai/blockrun-mcp/crypto-data.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 8 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Prompt Injection · line 65 Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
- medium Agent Snooping · line 74 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 200 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 127 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 202 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 142 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 203 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 201 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00194 | $0.03257 |
| Opus 5.5 | $0.00078 | $0.01303 |
| Sonnet 5.5 | $0.00039 | $0.00651 |
| Haiku 4.5 | $0.00019 | $0.00326 |
Grade A, and why
crypto-data 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 1mo 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 — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Crypto Data
Four live tools cover crypto data and they overlap. Pick by cost first — two of them are free, and paying for a quote you could get for nothing is the most common mistake here.
A fifth tool, blockrun_surf, was removed in 0.49.0: the gateway has answered every Surf path with HTTP 410 since 2026-09-06. Do not name it; the surf skill maps each former Surf capability to where it lives now — and lists the ones (on-chain SQL, cross-chain wallet labels, social mindshare, CEX order books) that have no BlockRun source yet.
Route by cost — check this before calling anything
| Question | Tool | Cost |
|---|---|---|
| What's BTC/ETH/any coin worth right now? | blockrun_price action:"price" category:"crypto" |
FREE |
| Crypto OHLC history | blockrun_price action:"history" category:"crypto" |
FREE |
| FX rate / commodity (gold, oil) | blockrun_price category:"fx" or "commodity" |
FREE |
| Which symbols exist? | blockrun_price action:"list" |
FREE |
| DEX pair, liquidity, volume, contract | blockrun_dex |
FREE |
| Stock ticker catalog (12 markets) | blockrun_price action:"list" category:"stocks" |
FREE — quotes/history withdrawn 2026-09-05 (501) |
| Token price by contract address | blockrun_defi path:"prices/{coins}" |
$0.0020 |
| Raw JSON-RPC on 40 chains | blockrun_rpc |
$0.0030 |
| Protocol TVL, chain TVL, yields/APY | blockrun_defi |
$0.0060 |
| Who a Polymarket wallet is, and which wallets are linked to it | blockrun_markets polymarket/wallet/identity/{w}, .../cluster |
$0.0085 |
| On-chain SQL, cross-chain wallet labels / net worth, social mindshare, CEX order books, ETF flows, unlocks | nothing on BlockRun yet — Surf retired 2026-09-06; say so | — |
Every price below is what x402 actually charges on Base (the base plus the gateway's $0.001 flat fee), verified against live payment-required headers — not the base you may see in a 402 body. The Solana gateway quotes the base alone; the account rail charges no fee.
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.
- 1mo ago Changed · +24 tokens per session 488d982ab9bf
- 1mo ago Changed 7ecd3ae73518
- 1mo ago First seen · 204 lines · 170 tokens per session scan A fb767159d588
crypto-data is a skill published in the GitHub repository BlockRunAI/blockrun-mcp (391 stars, last pushed 7d ago), licensed MIT. It adds 194 tokens to every session and 3,257 once invoked, about $0.0008 per session on Opus 5.5. 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 2026-08-30.
Other skills, from other repositories
x402-list
Discover x402 payment services and on-chain-verified facilitator settlement volume via the x402-list directory. Use when a user or agent needs to find an API/service that accepts x402 (HTTP 402 stablecoin) payments, compare services by reliability and price, check service uptime/health, see whether a service has…
x402
HTTP 402 payment protocol for AI agent commerce — three-actor model (Client, Resource Server, Facilitator), ERC-3009 transferWithAuthorization, server middleware (@x402/express), client patterns in TypeScript and Python, facilitator integration, agent-to-agent payments, pricing strategies, and replay protection. Works…
x402-payments
Quote and settle OpenMesha x402 paywalled services (USDC on Base). Use when metering tool calls, outcome fees, or agent-to-agent settlement.
hyperliquid
Hyperliquid market data, account history, trade review.
solana
Query Solana wallets, tokens, txs, and NFTs in USD.
mpp-agent
Pay HTTP 402 APIs via Machine Payments Protocol (MPP).