Anchor a file's SHA-256 fingerprint to Bitcoin. The file never leaves the device.
Connect Runs on your machine
claude mcp add orphograph -e ORPHO_API_KEY=<ORPHO_API_KEY> -e ORPHO_BASE_URL=<ORPHO_BASE_URL> -e ORPHO_X402_PAYER_KEY_FILE=<ORPHO_X402_PAYER_KEY_FILE> -e ORPHO_X402_DAILY_CAP_CENTS=<ORPHO_X402_DAILY_CAP_CENTS> -e ORPHO_X402_MAX_CENTS_PER_CALL=<ORPHO_X402_MAX_CENTS_PER_CALL> -- https://github.com/Orphograph/Orphograph/releases/download/mcp-v0.1.6/orphograph-mcp-0.1.6.mcpb{
"mcpServers": {
"orphograph": {
"command": "https://github.com/Orphograph/Orphograph/releases/download/mcp-v0.1.6/orphograph-mcp-0.1.6.mcpb",
"args": [],
"env": {
"ORPHO_API_KEY": "<ORPHO_API_KEY>",
"ORPHO_BASE_URL": "<ORPHO_BASE_URL>",
"ORPHO_X402_PAYER_KEY_FILE": "<ORPHO_X402_PAYER_KEY_FILE>",
"ORPHO_X402_DAILY_CAP_CENTS": "<ORPHO_X402_DAILY_CAP_CENTS>",
"ORPHO_X402_MAX_CENTS_PER_CALL": "<ORPHO_X402_MAX_CENTS_PER_CALL>"
}
}
}
}{
"mcpServers": {
"orphograph": {
"command": "https://github.com/Orphograph/Orphograph/releases/download/mcp-v0.1.6/orphograph-mcp-0.1.6.mcpb",
"args": [],
"env": {
"ORPHO_API_KEY": "<ORPHO_API_KEY>",
"ORPHO_BASE_URL": "<ORPHO_BASE_URL>",
"ORPHO_X402_PAYER_KEY_FILE": "<ORPHO_X402_PAYER_KEY_FILE>",
"ORPHO_X402_DAILY_CAP_CENTS": "<ORPHO_X402_DAILY_CAP_CENTS>",
"ORPHO_X402_MAX_CENTS_PER_CALL": "<ORPHO_X402_MAX_CENTS_PER_CALL>"
}
}
}
}{
"servers": {
"orphograph": {
"type": "stdio",
"command": "https://github.com/Orphograph/Orphograph/releases/download/mcp-v0.1.6/orphograph-mcp-0.1.6.mcpb",
"args": [],
"env": {
"ORPHO_API_KEY": "<ORPHO_API_KEY>",
"ORPHO_BASE_URL": "<ORPHO_BASE_URL>",
"ORPHO_X402_PAYER_KEY_FILE": "<ORPHO_X402_PAYER_KEY_FILE>",
"ORPHO_X402_DAILY_CAP_CENTS": "<ORPHO_X402_DAILY_CAP_CENTS>",
"ORPHO_X402_MAX_CENTS_PER_CALL": "<ORPHO_X402_MAX_CENTS_PER_CALL>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
ORPHO_API_KEYOptional, secret | Optional API key issued from https://orphograph.com/account.html. Without it, anchors are subject to the free-tier rate limit (three anchors per twenty-four hours per IP). With it, the customer's subscription or Pack credits apply. |
ORPHO_BASE_URLOptional | Base URL for the Orphograph API. Defaults to https://orphograph.com. Override only for testing or self-hosted instances. |
ORPHO_X402_PAYER_KEY_FILEOptional | Optional. Path to a chmod-600 file holding the hex private key of a dedicated Base wallet with USDC. With ORPHO_X402_DAILY_CAP_CENTS set too, anchors past the free tier are paid with x402 (1 cent today). The key never leaves the machine. |
ORPHO_X402_DAILY_CAP_CENTSOptional | Optional. The most this server may pay in one UTC day, in cents. Paying stays off unless this and ORPHO_X402_PAYER_KEY_FILE are both set. |
ORPHO_X402_MAX_CENTS_PER_CALLOptional | Optional. The most one anchor may cost, in cents. Default 5. |
Details
| Package | https://github.com/Orphograph/Orphograph/releases/download/mcp-v0.1.6/[email protected] (MCPB, stdio) |
| First published | 6 Nov 2026 |
| Last updated | 6 Nov 2026 |
| Registry name | io.github.Orphograph/orphograph |
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