{
  "$schema": "../rpc-schema-draft.json",
  "type": "object",
  "additionalProperties": false,
  "rpc": "listhtlcs",
  "title": "Command for querying HTLCs",
  "description": [
    "The **listhtlcs** RPC command gets all HTLCs (which, generally, we remember for as long as a channel is open, even if they've completed long ago)."
  ],
  "request": {
    "required": [],
    "properties": {
      "id": {
        "type": "string",
        "description": [
          "A short channel id (e.g. 1x2x3) or full 64-byte hex channel id, it will only list htlcs for that channel (which must be known)."
        ]
      }
    }
  },
  "response": {
    "required": [
      "htlcs"
    ],
    "properties": {
      "htlcs": {
        "type": "array",
        "items": {
          "type": "object",
          "additionalProperties": false,
          "required": [
            "short_channel_id",
            "id",
            "expiry",
            "direction",
            "amount_msat",
            "payment_hash",
            "state"
          ],
          "properties": {
            "short_channel_id": {
              "type": "short_channel_id",
              "description": [
                "The channel that contains/contained the HTLC."
              ]
            },
            "id": {
              "type": "u64",
              "description": [
                "The unique, incrementing HTLC id the creator gave this."
              ]
            },
            "expiry": {
              "type": "u32",
              "description": [
                "The block number where this HTLC expires/expired."
              ]
            },
            "amount_msat": {
              "type": "msat",
              "description": [
                "The value of the HTLC."
              ]
            },
            "direction": {
              "type": "string",
              "enum": [
                "out",
                "in"
              ],
              "description": [
                "Out if we offered this to the peer, in if they offered it."
              ]
            },
            "payment_hash": {
              "type": "hash",
              "description": [
                "Payment hash sought by HTLC."
              ]
            },
            "state": {
              "type": "string",
              "enum": [
                "SENT_ADD_HTLC",
                "SENT_ADD_COMMIT",
                "RCVD_ADD_REVOCATION",
                "RCVD_ADD_ACK_COMMIT",
                "SENT_ADD_ACK_REVOCATION",
                "RCVD_REMOVE_HTLC",
                "RCVD_REMOVE_COMMIT",
                "SENT_REMOVE_REVOCATION",
                "SENT_REMOVE_ACK_COMMIT",
                "RCVD_REMOVE_ACK_REVOCATION",
                "RCVD_ADD_HTLC",
                "RCVD_ADD_COMMIT",
                "SENT_ADD_REVOCATION",
                "SENT_ADD_ACK_COMMIT",
                "RCVD_ADD_ACK_REVOCATION",
                "SENT_REMOVE_HTLC",
                "SENT_REMOVE_COMMIT",
                "RCVD_REMOVE_REVOCATION",
                "RCVD_REMOVE_ACK_COMMIT",
                "SENT_REMOVE_ACK_REVOCATION"
              ],
              "description": [
                "The first 10 states are for `in`, the next 10 are for `out`."
              ]
            }
          }
        }
      }
    }
  },
  "author": [
    "Rusty Russell <<rusty@rustcorp.com.au>> is mainly responsible."
  ],
  "see_also": [
    "lightning-listforwards(7)"
  ],
  "resources": [
    "Main web site: <https://github.com/ElementsProject/lightning>"
  ],
  "examples": [
    {
      "request": {
        "id": "example:listhtlcs#1",
        "method": "listhtlcs",
        "params": {}
      },
      "response": {
        "htlcs": [
          {
            "short_channel_id": "103x1x0",
            "id": 0,
            "expiry": 117,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "d2668e77c5a2220496e813de36f1fc09ba804b16af4c6bb38299d8a6eb8a5f10",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x1x0",
            "id": 1,
            "expiry": 117,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "286e08ac8f575f10508d751fcfc93871b4344271967c7b9e5eacb3f3573b8307",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x1x0",
            "id": 2,
            "expiry": 135,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "3e4baa750ee3dfb934578f041ccb40b87432bf37ec65c9d7bce5ff28fecbd95f",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x1x0",
            "id": 3,
            "expiry": 135,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "4c3ce32565dc10ef2bd230c32802ce2fe8b007208c0a90757aa289f75c994d49",
            "state": "SENT_REMOVE_REVOCATION"
          }
        ]
      }
    },
    {
      "request": {
        "id": "example:listhtlcs#2",
        "method": "listhtlcs",
        "params": [
          "103x2x0"
        ]
      },
      "response": {
        "htlcs": [
          {
            "short_channel_id": "103x2x0",
            "id": 0,
            "expiry": 117,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "12bb14b1d119e1ae0759e5ff6f1f6653e3fd8f71ea59411500d2871404a47a98",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x2x0",
            "id": 1,
            "expiry": 117,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "57d950209cc0b4fcc5e3027569232f96cf83ef85314c6b139a5713848d811a66",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x2x0",
            "id": 2,
            "expiry": 135,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "45ad4654715411a07a0ad6ec3f4bfaa918c90e3d1934b10b1c1c5846523ddd7f",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x2x0",
            "id": 3,
            "expiry": 135,
            "direction": "out",
            "amount_msat": 100001001,
            "payment_hash": "cc0dcd214aa71c62bfba711a0746da821f2cdba1770b11c225920bdde12c931e",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          }
        ]
      }
    },
    {
      "request": {
        "id": "example:listhtlcs#3",
        "method": "listhtlcs",
        "params": [
          "436c2658eb4f4689b42ff11b8b05f31ba09860d0df7168085e0796cdf40f85e0"
        ]
      },
      "response": {
        "htlcs": [
          {
            "short_channel_id": "103x1x0",
            "id": 0,
            "expiry": 124,
            "direction": "out",
            "amount_msat": 1001,
            "payment_hash": "2ab653668c8017ff2f36ac36678a8da04e11380bd9580a2926b170523b0c6e3b",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x1x0",
            "id": 1,
            "expiry": 124,
            "direction": "out",
            "amount_msat": 2001,
            "payment_hash": "92f889cb2e48aa28e1e577228b907cdbcc371a2c018e9c8f60fa7036e232cf1d",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          },
          {
            "short_channel_id": "103x1x0",
            "id": 2,
            "expiry": 128,
            "direction": "out",
            "amount_msat": 4001,
            "payment_hash": "14ef01c9fb12d7dcac288f48ce87b19a7d5c3d5779aaed1e4adcb5c5d0e9fa45",
            "state": "RCVD_REMOVE_ACK_REVOCATION"
          }
        ]
      }
    }
  ]
}