CoinMarketCap for AI agents
CoinMarketCap provides real-time and historical cryptocurrency market data, tracking prices and rankings across thousands of coins and exchanges around the world. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.
What agents do in CoinMarketCap.
Check the latest coin rankings
Pull the latest cryptocurrency listings ranked by market cap for a market overview.
Get a coin's current quote
Get the latest price quote for a specific cryptocurrency before quoting it elsewhere.
Convert a price between currencies
Convert an amount from one currency to another using current market rates.
9 CoinMarketCap actions, graded by risk.
Every CoinMarketCap action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.
read
3Look things up. Allowed by default.
- coinmarketcap.get_key_infoGet API Key Info
- coinmarketcap.get_exchange_infoGet exchange info
- coinmarketcap.get_cryptocurrency_infoGet cryptocurrency info
write
6Create and change things. Allow, or ask the user first.
- coinmarketcap.partner_mapPartner Map
- coinmarketcap.cryptocurrency_mapCryptocurrency Map
- coinmarketcap.tools_price_conversionPrice Conversion
- coinmarketcap.cryptocurrency_quotes_latestGet Latest Cryptocurrency Quotes
- coinmarketcap.global_metrics_quotes_latestGlobal Metrics Quotes Latest
- coinmarketcap.cryptocurrency_listings_latestCryptocurrency Listings Latest
destructive
0Delete, cancel or archive. Ask first, or deny outright.
- No destructive actions.
CoinMarketCap in three steps.
- 01Your users connect CoinMarketCapThey add their CoinMarketCap api key on Arc0 Connect, under your brand. It goes straight into the vault.
- 02You set the rulesReads run, and writes like “partner Map” can wait for the user to approve.
- 03Any agent can actYour agent calls CoinMarketCap through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
await arc0.policies.set('coinmarketcap', { read: 'allow', write: 'ask', // partner_map destructive: 'deny', }) # Claude Code: the same connection, one URL $ claude mcp add --transport http arc0 \ https://mcp.arc0.ai/u/u_8f2
How CoinMarketCap connects.
Users add their CoinMarketCap api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
The same CoinMarketCap connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →
- AUTH
- API key
- CREDENTIALS
- Per-tenant encrypted vault
- MODEL SEES
- Results only, never credentials
- AUDIT LOG
- Every call, on every plan
Use CoinMarketCap from any agent.
CoinMarketCap and Arc0, answered.
Can I use CoinMarketCap with Claude, ChatGPT or Cursor?
Yes. Connect CoinMarketCap to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the CoinMarketCap actions you allow.
How do users connect CoinMarketCap?
Users add their CoinMarketCap api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.
Which CoinMarketCap actions can my agent take?
9 in total: 3 read, 6 write and 0 destructive, such as “partner Map”. Your policies decide which of them each agent may call.
Can I make my agent read-only in CoinMarketCap?
Yes. Allow read actions and deny writes in the CoinMarketCap policy. Your agent can still look things up, and any write it attempts is blocked and logged.
Can my own backend call CoinMarketCap too?
Yes. The same CoinMarketCap connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.
Plug CoinMarketCap into your agent.
Your users connect CoinMarketCap once, under your brand. Your agent gets 9 actions behind your policies, with every call on the record.
Free to build · MCP + REST · Audit log on every plan