177 crypto market intel endpoints with auto x402 USDC micropayments from your AI agent
If you already use X402, the x402 mcp server is the piece that lets your assistant work with it directly. 177 crypto market intel endpoints with auto x402 USDC micropayments from your AI agent.
MCP server that exposes Carbon & Cashmere's 177 crypto market intelligence endpoints to your AI agent — with automatic x402 USDC micropayments from your wallet.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
get_v1_news — analyzed crypto news with sentiment + market impactget_v1_stablecoins — total market cap, per-coin supply, chain distributionget_v1_onchain_btc — Bitcoin on-chain metrics (hash-rate, mempool, miner flows)get_v1_bittensor_leaderboard — top-100 Bittensor miners by emissionget_v1_mantis_realized_accuracy — MANTIS subnet (UID 253) realized accuracy track-recordget_v1_intel_snapshot — aggregated market intel snapshotOne — time cost: ~$10 USDC covers 200+ tool callsbase58 — encoded Solana keypair bytesPay-per — call cap.** Each call costs $0.003–$0.50. Even a runaway loop is bounded by wallet balanceX402_TOOL_LIMIT — What you getVariable — RequiredEVM_PRIVATE_KEY — one ofConfiguration is passed through the environment: EVM_PRIVATE_KEY, SVM_PRIVATE_KEY, X402_TOOL_LIMIT. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. X402's toolset — get_v1_news, get_v1_stablecoins, get_v1_onchain_btc and 11 more — is a fair guide to whether it matches your workflow. It is maintained by CarbonCashmere; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| get_v1_news | analyzed crypto news with sentiment + market impact |
| get_v1_stablecoins | total market cap, per-coin supply, chain distribution |
| get_v1_onchain_btc | Bitcoin on-chain metrics (hash-rate, mempool, miner flows) |
| get_v1_bittensor_leaderboard | top-100 Bittensor miners by emission |
| get_v1_mantis_realized_accuracy | MANTIS subnet (UID 253) realized accuracy track-record |
| get_v1_intel_snapshot | aggregated market intel snapshot |
| One | time cost: ~$10 USDC covers 200+ tool calls |
| base58 | encoded Solana keypair bytes |
| Pay-per | call cap.** Each call costs $0.003–$0.50. Even a runaway loop is bounded by wallet balance. |
| X402_TOOL_LIMIT | What you get |
| Variable | Required |
| EVM_PRIVATE_KEY | one of |
| SVM_PRIVATE_KEY | one of |
| X402_API_BASE | no |
{
"mcpServers": {
"carbon-cashmere": {
"command": "npx",
"args": ["-y", "@carbon-cashmere/x402-mcp"],
"env": {
"EVM_PRIVATE_KEY": "0x_your_evm_private_key_here",
"SVM_PRIVATE_KEY": "your_base58_solana_private_key_here_optional"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| EVM_PRIVATE_KEY | Credential the server authenticates with. | Yes |
| SVM_PRIVATE_KEY | Credential the server authenticates with. | Yes |
| X402_TOOL_LIMIT | Configuration value read at startup. | Optional |
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