diff --git a/README.md b/README.md
index 0157ed3..0dce1dd 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ Filecoin API interactions provided by Telefil are:
 - **`Filecoin.StateDealProviderCollateralBounds`**
 - **`Filecoin.StateListMiners`**
 - **`Filecoin.StateMinerPower`**
+- **`Filecoin.StateMarketStorageDeal`**
 
 ## Installation
 
diff --git a/go.mod b/go.mod
index 048c47f..0793dc4 100644
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,9 @@ require (
 
 require (
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
+	github.com/filecoin-project/go-amt-ipld/v4 v4.0.0 // indirect
+	github.com/filecoin-project/go-bitfield v0.2.4 // indirect
+	github.com/filecoin-project/go-hamt-ipld/v3 v3.1.0 // indirect
 	github.com/ipfs/go-block-format v0.0.3 // indirect
 	github.com/ipfs/go-cid v0.4.1 // indirect
 	github.com/ipfs/go-ipfs-util v0.0.2 // indirect
diff --git a/go.sum b/go.sum
index 6d3cd66..5abefbc 100644
--- a/go.sum
+++ b/go.sum
@@ -12,8 +12,10 @@ github.com/filecoin-project/go-address v0.0.5/go.mod h1:jr8JxKsYx+lQlQZmF5i2U0Z+
 github.com/filecoin-project/go-address v1.1.0 h1:ofdtUtEsNxkIxkDw67ecSmvtzaVSdcea4boAmLbnHfE=
 github.com/filecoin-project/go-address v1.1.0/go.mod h1:5t3z6qPmIADZBtuE9EIzi0EwzcRy2nVhpo0I/c1r0OA=
 github.com/filecoin-project/go-amt-ipld/v2 v2.1.0/go.mod h1:nfFPoGyX0CU9SkXX8EoCcSuHN1XcbN0c6KBh7yvP5fs=
+github.com/filecoin-project/go-amt-ipld/v4 v4.0.0 h1:XM81BJ4/6h3FV0WfFjh74cIDIgqMbJsMBLM0fIuLUUk=
 github.com/filecoin-project/go-amt-ipld/v4 v4.0.0/go.mod h1:gF053YQ4BIpzTNDoEwHZas7U3oAwncDVGvOHyY8oDpE=
 github.com/filecoin-project/go-bitfield v0.2.0/go.mod h1:CNl9WG8hgR5mttCnUErjcQjGvuiZjRqK9rHVBsQF4oM=
+github.com/filecoin-project/go-bitfield v0.2.4 h1:uZ7MeE+XfM5lqrHJZ93OnhQKc/rveW8p9au0C68JPgk=
 github.com/filecoin-project/go-bitfield v0.2.4/go.mod h1:CNl9WG8hgR5mttCnUErjcQjGvuiZjRqK9rHVBsQF4oM=
 github.com/filecoin-project/go-commp-utils v0.1.3/go.mod h1:3ENlD1pZySaUout0p9ANQrY3fDFoXdqyX04J+dWpK30=
 github.com/filecoin-project/go-commp-utils/nonffi v0.0.0-20220905160352-62059082a837/go.mod h1:e2YBjSblNVoBckkbv3PPqsq71q98oFkFqL7s1etViGo=
@@ -22,6 +24,7 @@ github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03/go.mod
 github.com/filecoin-project/go-fil-commcid v0.0.0-20200716160307-8f644712406f/go.mod h1:Eaox7Hvus1JgPrL5+M3+h7aSPHc0cVqpSxA+TxIEpZQ=
 github.com/filecoin-project/go-fil-commcid v0.0.0-20201016201715-d41df56b4f6a/go.mod h1:Eaox7Hvus1JgPrL5+M3+h7aSPHc0cVqpSxA+TxIEpZQ=
 github.com/filecoin-project/go-fil-commcid v0.1.0/go.mod h1:Eaox7Hvus1JgPrL5+M3+h7aSPHc0cVqpSxA+TxIEpZQ=
+github.com/filecoin-project/go-hamt-ipld/v3 v3.1.0 h1:rVVNq0x6RGQIzCo1iiJlGFm9AGIZzeifggxtKMU7zmI=
 github.com/filecoin-project/go-hamt-ipld/v3 v3.1.0/go.mod h1:bxmzgT8tmeVQA1/gvBwFmYdT8SOFUwB3ovSUfG1Ux0g=
 github.com/filecoin-project/go-padreader v0.0.0-20200903213702-ed5fae088b20/go.mod h1:mPn+LRRd5gEKNAtc+r3ScpW2JRU/pj4NBKdADYWHiak=
 github.com/filecoin-project/go-state-types v0.0.0-20200903145444-247639ffa6ad/go.mod h1:IQ0MBPnonv35CJHtWSN3YY1Hz2gkPru1Q9qoaYLxx9I=
diff --git a/telefil.go b/telefil.go
index 98cd51c..52b66d4 100644
--- a/telefil.go
+++ b/telefil.go
@@ -7,6 +7,7 @@ import (
 	"github.com/filecoin-project/go-address"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
+	"github.com/filecoin-project/go-state-types/builtin/v12/market"
 	"github.com/libp2p/go-libp2p/core/peer"
 	"github.com/multiformats/go-multiaddr"
 	"github.com/ybbus/jsonrpc/v3"
@@ -19,6 +20,7 @@ const (
 	methodFilStateDealProviderCollateralBounds = `Filecoin.StateDealProviderCollateralBounds`
 	methodFilStateListMiners                   = `Filecoin.StateListMiners`
 	methodFilStateMinerPower                   = `Filecoin.StateMinerPower`
+	methodFilStateMarketStorageDeal            = `Filecoin.StateMarketStorageDeal`
 )
 
 type (
@@ -26,7 +28,7 @@ type (
 		client jsonrpc.RPCClient
 	}
 	ChainHead struct {
-		Height int64 `json:"Height"`
+		Height abi.ChainEpoch `json:"Height"`
 	}
 	ChainGenesis struct {
 		Blocks []struct {
@@ -46,6 +48,10 @@ type (
 		QualityAdjPower big.Int `json:"QualityAdjPower"`
 		RawBytePower    big.Int `json:"RawBytePower"`
 	}
+	StateMarketStorageDeal struct {
+		Proposal market.DealProposal `json:"Proposal"`
+		State    market.DealState    `json:"State"`
+	}
 )
 
 func New(o ...Option) (*Telefil, error) {
@@ -174,3 +180,18 @@ func (f *Telefil) StateListMiners(ctx context.Context) ([]address.Address, error
 		return mids, nil
 	}
 }
+
+func (f *Telefil) StateMarketStorageDeal(ctx context.Context, id abi.DealID) (*StateMarketStorageDeal, error) {
+	switch resp, err := f.client.Call(ctx, methodFilStateMarketStorageDeal, id, nil); {
+	case err != nil:
+		return nil, err
+	case resp.Error != nil:
+		return nil, resp.Error
+	default:
+		var deal StateMarketStorageDeal
+		if err = resp.GetObject(&deal); err != nil {
+			return nil, err
+		}
+		return &deal, nil
+	}
+}