coinmarketcap.com llms.txt
In short
coinmarketcap.com serves a 13 KB llms.txt with 6 H2 sections and 64 links, graded A on the llmstxt.org structure (6 of 6 checks). It passes every check. The home page does not link it, so an agent that does not guess paths will not find it. An llms-full.txt is served too. Read 4 November 2026.
llms.txt 13 KB, 87 lines
# CoinMarketCap API Documentation
> CoinMarketCap is the most-referenced source of cryptocurrency market data: real-time and historical prices, market cap, OHLCV, exchange and on-chain DEX data, and CMC's proprietary indices (Fear & Greed, CMC100, CMC20, Altcoin Season).
>
> **No API key required to start.** Call the [Keyless Public API](https://coinmarketcap.com/api/documentation/pro-api-reference/keyless-public-api.md) with no key and no signup - just prefix any supported path with `/public-api`, e.g. `https://pro-api.coinmarketcap.com/public-api/v2/simple/price?symbol=BTC,ETH&convert=USD`. Add a free API key for higher rate limits and the full endpoint catalog.
## Documentation
- [Standards and Conventions](https://coinmarketcap.com/api/documentation/guides/standards-and-conventions.md): Understand response structure, identifier conventions, request bundling, date formats, and versioning.
- [Get Started with an API Key](https://coinmarketcap.com/api/documentation/guides/quick-start.md): Get your CoinMarketCap API key, make your first production request, and find the right next step.
- [Get Top Coins by Market Cap with the CoinMarketCap API](https://coinmarketcap.com/api/documentation/guides/get-top-coins-by-market-cap.md): Use the CoinMarketCap listings endpoint for ranked market views and paginated market slices.
- [Get Latest Crypto Prices with the CoinMarketCap API](https://coinmarketcap.com/api/documentation/guides/get-latest-crypto-prices.md): Use the CoinMarketCap quotes endpoint when you already know which assets you want prices for.
- [Get Historical Price Data with the CoinMarketCap API](https://coinmarketcap.com/api/documentation/guides/get-historical-price-data.md): Choose the right CoinMarketCap endpoint for historical quotes and OHLCV candlestick data.
- [Rate limits and troubleshooting](https://coinmarketcap.com/api/documentation/guides/errors-and-rate-limits.md): Understand API throttling, common HTTP status codes, and the main error response codes.
- [CoinMarketCap API Common Workflows](https://coinmarketcap.com/api/documentation/guides/common-workflows.md): Find the right CoinMarketCap API starting point for common workflows like latest prices, historical data, exchange data, and DEX data.
- [Best Practices](https://coinmarketcap.com/api/documentation/guides/best-practices.md): Best practices for using the CoinMarketCap API efficiently, reliably, and with stable identifiers.
- [API Authentication](https://coinmarketcap.com/api/documentation/guides/authentication.md): Learn how to authenticate CoinMarketCap Pro API requests with your API key.
- [API response format, IDs, and timestamps](https://coinmarketcap.com/api/documentation/api-reference/standards-and-conventions.md): This response-format and identifier topic is maintained in Guides.
- [Quick start](https://coinmarketcap.com/api/documentation/api-reference/quick-start.md): This quick-start topic is maintained in Guides.
- [API reference](https://coinmarketcap.com/api/documentation/api-reference/introduction.md): This shortcut page is kept for older links into the API reference.
- [Rate limits, errors, and troubleshooting](https://coinmarketcap.com/api/documentation/api-reference/errors-and-rate-limits.md): This rate-limit and troubleshooting topic is maintained in Guides.
- [Best practices](https://coinmarketcap.com/api/documentation/api-reference/best-practices.md): This best-practices topic is maintained in Guides.
- [Authentication](https://coinmarketcap.com/api/documentation/api-reference/authentication.md): This authentication topic is maintained in Guides.
- [CoinMarketCap x402](https://coinmarketcap.com/api/documentation/ai-agent-hub/x402.md): Access CoinMarketCap market data with x402 pay-per-request flows on Base.
- [CoinMarketCap MCP for Windsurf](https://coinmarketcap.com/api/documentation/ai-agent-hub/windsurf.md): Connect CoinMarketCap MCP to Windsurf for real-time crypto market data and agent-assisted development.
- [CoinMarketCap MCP](https://coinmarketcap.com/api/documentation/ai-agent-hub/mcp.md): Connect to the CoinMarketCap Model Context Protocol server for live crypto market data and analysis tools.
- [CoinMarketCap MCP for Cursor](https://coinmarketcap.com/api/documentation/ai-agent-hub/cursor.md): Connect CoinMarketCap MCP to Cursor for real-time crypto market data and agent-assisted development.
- [CoinMarketCap CLI](https://coinmarketcap.com/api/documentation/ai-agent-hub/cmc-cli.md): Use the CoinMarketCap CLI for terminal-native crypto data access, scripting, and agent workflows.
- [CoinMarketCap MCP for Claude Code](https://coinmarketcap.com/api/documentation/ai-agent-hub/claude-code.md): Connect CoinMarketCap MCP to Claude Code for real-time crypto market data and agent-assisted development in the terminal.
- [Chat Completions](https://coinmarketcap.com/api/documentation/ai-agent-hub/chat-completions.md): OpenAI-compatible chat completions with built-in CoinMarketCap data tools, server-side tool execution, and per-token billing plus a 10% surcharge when CMC tools are in the request.
- [TypeScript SDK](https://coinmarketcap.com/api/documentation/developer-tools/sdks/typescript.md): Install and use the official CoinMarketCap Pro API TypeScript/JavaScript SDK.
- [Python SDK](https://coinmarketcap.com/api/documentation/developer-tools/sdks/python.md): Install and use the official CoinMarketCap Pro API Python SDK.
First 32 of 87 lines. 4 spans shown as […] because the words or characters in them are rejected by this site's own style rules; the live file has them.
Parse graded A, 6 of 6
file: https://coinmarketcap.com/llms.txt
CoinMarketCap API Documentation
CoinMarketCap is the most-referenced source of cryptocurrency market data: real-time and historical prices, market cap, OHLCV, exchange and on-chain DEX data, and CMC's proprietary indices (Fear & Greed, CMC100, CMC20, Altcoin Season). **No API key required to start.** Call the [Keyless Public API](https://coinmarketc
6 sections, 64 links, no Optional section.
Ora's cached score: 60, grade C, scanned 7 September 2026.
The parse
coinmarketcap.com lists 64 links: 63 point at coinmarketcap.com or a relative path, 0 point elsewhere. The hosts it links most: coinmarketcap.com (63).
| H2 section | Links |
|---|---|
| Documentation | 44 |
| API Reference […] Market Data (Pro API) | 11 |
| API Reference […] DEX Data | 4 |
| API Reference […] Utilities | 1 |
| API Reference […] Additional | 1 |
| Additional Resources | 2 |
Grade against the llmstxt.org structure
The file passes all six checks. The grade is the count of passed checks: six is A, five is B, four is C, three is D, fewer is F. It measures structure only. Whether any agent reads the file is a separate question, covered on the llms.txt reference.
| Check | Result | Detail |
|---|---|---|
| Starts with an H1 naming the site or project | Pass | H1: CoinMarketCap API Documentation |
| Has a blockquote summary under the H1 | Pass | Blockquote summary found. |
| Has at least one H2 section that lists links | Pass | 6 H2 sections, 6 with links. |
| At least 80 percent of links point at the same site | Pass | 63 of 63 links stay on coinmarketcap.com (100 percent). |
| Under 100 KB | Pass | 13182 bytes as served. |
| Plain markdown, no HTML | Pass | No HTML document markers in the body. |
Ora's cached score
Ora's cached report for coinmarketcap.com gives it 60 of 100, grade C, scanned on 7 September 2026. Its Access layer, which holds the read-layer checks below, scored 35 of 60 check points. Read from GET ora.ai/api/score/coinmarketcap.com on 5 November 2026. The score is Ora's, not this site's, and the structure grade above is a different measure: it grades the llms.txt file against the llmstxt.org proposal, while Ora's score covers the whole site. Ora's report for coinmarketcap.com has every layer.
| Ora check (Access layer) | Result | Points |
|---|---|---|
| Sitemap exists | Pass | 2 of 2 |
| Content without JavaScript | Partial | 2 of 3 |
| Not blocked by bot detection | Pass | 2 of 2 |
| Markdown URL fallback | Partial | 1 of 2 |
| llms.txt exists | Pass | 1 of 1 |
| llms.txt formatting | Pass | 2 of 2 |
| JSON-LD structured data | Partial | 2 of 4 |
| Metadata completeness | Pass | 2 of 2 |
| llms.txt links resolve | Pass | 2 of 2 |
| Markdown alternate link | Pass | 1 of 1 |
| Redirect hygiene | Pass | 1 of 1 |
| Page token budget | Pass | 1 of 1 |
| Code fence validity | Pass | 1 of 1 |
| Content behind auth | Not applicable | 0 of 2 |
| OpenAPI spec published | Fail | 0 of 7 |
| Markdown agent docs | Pass | 1 of 1 |
| Markdown negotiation with Vary | Fail | 0 of 1 |
| Markdown for agent user agents | Fail | 0 of 1 |
| Agent crawler reachability | Pass | 2 of 2 |
Linking and the companion file
The home page of coinmarketcap.com does not link the file in its HTML. Ora's lab found (2026-10-19) that 86 percent of llms.txt fetches by agents arrived through a link, so an unlinked file is mostly a file nobody opens. An llms-full.txt is served at the same root.
How it compares
At 13 KB the file is larger than 67 percent of the 2,529 plain-text llms.txt files in this edition, and its 64 links put it ahead of 68 percent of them on link count. The home page declares no generator. Size bucket: 10 to 50 KB. Tranco rank 2,179. Category: Top 10,000, no category.
Live file: https://coinmarketcap.com/llms.txt. Read 4 November 2026. If the file has since changed or gone, the live URL is the authority; this page records what the crawl read on that date.
Sources
- coinmarketcap.com llms.txt https://coinmarketcap.com/llms.txt, read 4 November 2026
- llms.txt proposal (llmstxt.org) https://llmstxt.org/, read 4 November 2026
- Tranco list 746WX (crawl universe) https://tranco-list.eu/list/746WX, read 4 November 2026
- Ora: AgentReady launch post (the 86 percent finding) https://ora.ai/blog/agentready-launch, read 4 November 2026
- Ora llms.txt (GET /api/score/{domain} looks up a cached score) https://ora.ai/llms.txt, read 5 November 2026
Last reviewed 5 November 2026