diff --git a/api.go b/api.go
index 63ea3aa..1768e84 100644
--- a/api.go
+++ b/api.go
@@ -118,7 +118,7 @@ func (api *HttpApi) Dag() iface.DagAPI {
 }
 
 func (api *HttpApi) Name() iface.NameAPI {
-	return (*NameAPI)(api)
+	return nil
 }
 
 func (api *HttpApi) Key() iface.KeyAPI {
diff --git a/api_test.go b/api_test.go
index b925b5c..e32c456 100644
--- a/api_test.go
+++ b/api_test.go
@@ -3,7 +3,6 @@ package httpapi
 import (
 	"context"
 	"fmt"
-	"github.com/ipfs/iptb/testbed/interfaces"
 	"io/ioutil"
 	"os"
 	"path"
@@ -16,6 +15,7 @@ import (
 	local "github.com/ipfs/iptb-plugins/local"
 	"github.com/ipfs/iptb/cli"
 	"github.com/ipfs/iptb/testbed"
+	"github.com/ipfs/iptb/testbed/interfaces"
 )
 
 type NodeProvider struct{}
@@ -39,7 +39,14 @@ func (NodeProvider) MakeAPISwarm(ctx context.Context, fullIdentity bool, n int)
 	}
 
 	c := cli.NewCli()
-	if err := c.Run([]string{"iptb", "--IPTB_ROOT", dir, "auto", "-type", "localipfs", "-count", strconv.FormatInt(int64(n), 10), "--start"}); err != nil {
+
+	initArgs := []string{"iptb", "--IPTB_ROOT", dir, "auto", "-type", "localipfs", "-count", strconv.FormatInt(int64(n), 10)}
+	if err := c.Run(initArgs); err != nil {
+		return nil, err
+	}
+
+	startArgs := []string{"iptb", "--IPTB_ROOT", dir, "start", "-wait", "--", "--offline=" + strconv.FormatBool(n == 1)}
+	if err := c.Run(startArgs); err != nil {
 		return nil, err
 	}
 
diff --git a/block.go b/block.go
index 8bdb4c5..185aa0a 100644
--- a/block.go
+++ b/block.go
@@ -1,17 +1,69 @@
 package httpapi
 
 import (
+	"bytes"
 	"context"
+	"errors"
+	"fmt"
 	"io"
 
+	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-ipfs/core/coreapi/interface"
-	"github.com/ipfs/go-ipfs/core/coreapi/interface/options"
+	caopts "github.com/ipfs/go-ipfs/core/coreapi/interface/options"
+	mh "github.com/multiformats/go-multihash"
 )
 
 type BlockAPI HttpApi
 
-func (api *BlockAPI) Put(ctx context.Context, r io.Reader, opts ...options.BlockPutOption) (iface.BlockStat, error) {
-	return nil, ErrNotImplemented
+type blockStat struct {
+	Key  string
+	BSize int `json:"Size"`
+}
+
+func (s *blockStat) Size() int {
+	return s.BSize
+}
+
+func (s *blockStat) valid() (iface.ResolvedPath, error) {
+	c, err := cid.Parse(s.Key)
+	if err != nil {
+		return nil, err
+	}
+
+	return iface.IpldPath(c), nil
+}
+
+func (s *blockStat) Path() iface.ResolvedPath {
+	p, _ := s.valid()
+	return p
+}
+
+func (api *BlockAPI) Put(ctx context.Context, r io.Reader, opts ...caopts.BlockPutOption) (iface.BlockStat, error) {
+	options, _, err := caopts.BlockPutOptions(opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	mht, ok := mh.Codes[options.MhType]
+	if !ok {
+		return nil, fmt.Errorf("unknowm mhType %d", options.MhType)
+	}
+
+	req := api.core().request("block/put").
+		Option("mhtype", mht).
+		Option("mhlen", options.MhLength).
+		Option("format", options.Codec).
+		FileBody(r)
+
+	var out blockStat
+	if err := req.Exec(ctx, &out); err != nil {
+		return nil, err
+	}
+	if _, err := out.valid(); err != nil {
+		return nil, err
+	}
+
+	return &out, nil
 }
 
 func (api *BlockAPI) Get(ctx context.Context, p iface.Path) (io.Reader, error) {
@@ -19,20 +71,57 @@ func (api *BlockAPI) Get(ctx context.Context, p iface.Path) (io.Reader, error) {
 	if err != nil {
 		return nil, err
 	}
+	if resp.Error != nil {
+		return nil, resp.Error
+	}
 
-	//TODO: is close on the reader enough?
-	//defer resp.Close()
+	//TODO: make get return ReadCloser to avoid copying
+	defer resp.Close()
+	b := new(bytes.Buffer)
+	if _, err := io.Copy(b, resp.Output); err != nil {
+		return nil, err
+	}
 
-	//TODO: make blockApi return ReadCloser
-	return resp.Output, resp.Error
+	return b, nil
 }
 
-func (api *BlockAPI) Rm(ctx context.Context, p iface.Path, opts ...options.BlockRmOption) error {
-	return ErrNotImplemented
+func (api *BlockAPI) Rm(ctx context.Context, p iface.Path, opts ...caopts.BlockRmOption) error {
+	options, err := caopts.BlockRmOptions(opts...)
+	if err != nil {
+		return err
+	}
+
+	removedBlock := struct {
+		Hash  string `json:",omitempty"`
+		Error string `json:",omitempty"`
+	}{}
+
+	req := api.core().request("block/rm").
+		Option("force", options.Force).
+		Arguments(p.String())
+
+	if err := req.Exec(ctx, &removedBlock); err != nil {
+		return err
+	}
+
+	if removedBlock.Error != "" {
+		return errors.New(removedBlock.Error)
+	}
+
+	return nil
 }
 
 func (api *BlockAPI) Stat(ctx context.Context, p iface.Path) (iface.BlockStat, error) {
-	return nil, ErrNotImplemented
+	var out blockStat
+	err := api.core().request("block/stat", p.String()).Exec(ctx, &out)
+	if err != nil {
+		return nil, err
+	}
+	if _, err := out.valid(); err != nil {
+		return nil, err
+	}
+
+	return &out, nil
 }
 
 func (api *BlockAPI) core() *HttpApi {
diff --git a/requestbuilder.go b/requestbuilder.go
index 9ccc8cf..6e5a89e 100644
--- a/requestbuilder.go
+++ b/requestbuilder.go
@@ -5,8 +5,11 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"strconv"
 	"strings"
+
+	"github.com/ipfs/go-ipfs-files"
 )
 
 // RequestBuilder is an IPFS commands request builder.
@@ -42,6 +45,15 @@ func (r *RequestBuilder) Body(body io.Reader) *RequestBuilder {
 	return r
 }
 
+// FileBody sets the request body to the given reader wrapped into multipartreader.
+func (r *RequestBuilder) FileBody(body io.Reader) *RequestBuilder {
+	pr, _ := files.NewReaderPathFile("/dev/stdin", ioutil.NopCloser(body), nil)
+	d := files.NewMapDirectory(map[string]files.Node{"": pr})
+	r.body = files.NewMultiFileReader(d, false)
+
+	return r
+}
+
 // Option sets the given option.
 func (r *RequestBuilder) Option(key string, value interface{}) *RequestBuilder {
 	var s string