hive-mcp-ledger-bridge

Hive Civilization — EIP-712 over USB/DMK ledger-bridge MCP server.

Implements the same signer-backend contract that shisa-ai/shisad exposes through contrib/ledger-bridge. Ledger is a partner. This server complements shisad — it does not replace it.

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Partner Doctrine

Layer	Operator	Function
Hardware countersignature	Ledger device	EIP-712 signature over intent_envelope_hash after on-device review
ledger-bridge	shisa-ai (in contrib/)	Signer-backend contract; HTTP-to-USB/DMK adapter
8-layer PEP + ConfirmationLevel	shisad	Per-call policy enforcement; routes confirmation to backend
DID resolution + identity passport	Hive (hivetrust, hive-mcp-identity)	Read-only identity surface
Spectral receipts	Hive	Settlement audit record per fee event

No overlap. The hardware tier remains Ledger's. The runtime policy tier remains shisad's. Hive contributes IntentEnvelope construction, hash verification, confirmation-level policy, and settlement attestation — all above the PEP, without modifying the ConfirmationLevel enum or the signer-backend contract.

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ConfirmationLevel Enum

From the shisa-ai/shisad specification:

Level	Name	Integer
L0	SOFTWARE	0
L1	REAUTHENTICATED	1
L2	BOUND_APPROVAL	2
L3	SIGNED_AUTHORIZATION	3
L4	TRUSTED_DISPLAY_AUTHORIZATION	4

This server uses the enum verbatim. No extensions, no invented tiers.

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Tools

Tool	Description	Default ConfirmationLevel
ledger_intent_envelope_create	Build an IntentEnvelope with EIP-712 domain separator and intent_envelope_hash	Derived from action
ledger_intent_envelope_verify	Verify intent_envelope_hash matches envelope contents	Read-only / none
ledger_confirmation_level_query	Return required ConfirmationLevel for an intent	Read-only / none
ledger_signed_authorization_attest	Hive-side attestation that an intent reached L3 or L4	L3 / L4 required
ledger_partner_directory	Partner integration directory: shisad reference, Ledger Live, Hive contact	Read-only / none

ledger_intent_envelope_create

Build a signed-ready IntentEnvelope. The server produces the EIP-712 domain separator and intent_envelope_hash — the hash is what the Ledger device signs.

{
  "intent_id": "uuid-or-did-fragment",
  "agent_did": "did:hive:0xabc...",
  "action": "transfer",
  "target": "0xRecipientAddress",
  "amount": "1000.00",
  "chain_id": 8453,
  "nonce": 1,
  "deadline": 1777699200,
  "verifying_contract": "0x0000000000000000000000000000000000000000"
}

Response includes envelope, intent_envelope_hash, domain_separator, and suggested_confirmation_level.

ledger_intent_envelope_verify

Supply an IntentEnvelope body and an intent_envelope_hash. Returns match: true|false and the recomputed hash.

ledger_confirmation_level_query

{ "action": "transfer", "amount_usd": 50000 }

Returns the integer level and name. Useful for pre-call policy checks before routing to the ledger-bridge.

ledger_signed_authorization_attest

Record a Hive-side attestation that a device returned an ECDSA signature at L3 or L4. This is not on-chain settlement — it is an audit record that the intent_envelope_hash was device-countersigned.

{
  "intent_envelope_hash": "0xabc...",
  "agent_did": "did:hive:0xabc...",
  "confirmation_level": 4,
  "ecdsa_signature": "0xsignatureHex..."
}

ledger_partner_directory

Returns the full partner directory with URLs, roles, and contact information.

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Endpoints

Path	Method	Description
/health	GET	Service health and version
/.well-known/mcp.json	GET	MCP manifest
/mcp	POST	JSON-RPC 2.0 (MCP 2024-11-05)

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Connect

MCP endpoint: https://hiveledgerbridge.onrender.com/mcp (pairs with shisa-ai/shisad contrib/ledger-bridge + future hive-ledger-attest backend)

JSON-RPC 2.0 — tools/list

curl -s -X POST https://hiveledgerbridge.onrender.com/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

JSON-RPC 2.0 — ledger_intent_envelope_create

curl -s -X POST https://hiveledgerbridge.onrender.com/mcp \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc":"2.0","id":2,"method":"tools/call",
    "params":{
      "name":"ledger_intent_envelope_create",
      "arguments":{
        "intent_id":"550e8400-e29b-41d4-a716-446655440000",
        "agent_did":"did:hive:0xabc",
        "action":"transfer",
        "target":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "chain_id":8453,
        "nonce":1,
        "deadline":1777699200
      }
    }
  }'

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Integration with shisad

shisa-ai/shisad routes trusted_display_authorization (L4) intents through contrib/ledger-bridge — the daemon POSTs an IntentEnvelope plus intent_envelope_hash to the bridge, the user reviews on the Ledger device, and the ECDSA signature returns to the daemon.

This server speaks the same IntentEnvelope / intent_envelope_hash vocabulary. A shisad deployment can use ledger_intent_envelope_create upstream of the bridge call, ledger_intent_envelope_verify on the returned hash, and ledger_signed_authorization_attest to anchor the device signature as a Hive Spectral receipt.

Operator policy continues to control ConfirmationLevel through the standard tools."x".confirmation.level config — no new mechanism required.

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Infrastructure

Property	Value
Transport	Streamable-HTTP, JSON-RPC 2.0, MCP 2024-11-05
Runtime	Node.js ≥ 18, ESM
LLM (if extended)	https://hivecompute-g2g7.onrender.com/v1/compute/chat/completions
Treasury	0x15184bf50b3d3f52b60434f8942b7d52f2eb436e
USDC (Base)	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Brand	#C08D23
Spec reference	shisa-ai/shisad contrib/ledger-bridge
Ledger partner program	developers.ledger.com

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License

MIT — see LICENSE.

Contact: steve@thehiveryiq.com

Hive Civilization Directory

Part of the Hive Civilization — agent-native financial infrastructure.

• Endpoint Directory: https://thehiveryiq.com
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