diff --git a/sapis/tokens/builder.go b/sapis/tokens/builder.go
new file mode 100644
index 0000000..1dd67c8
--- /dev/null
+++ b/sapis/tokens/builder.go
@@ -0,0 +1,26 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  token_builder.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+
diff --git a/sapis/tokens/builder_options.go b/sapis/tokens/builder_options.go
new file mode 100644
index 0000000..8e9bb1e
--- /dev/null
+++ b/sapis/tokens/builder_options.go
@@ -0,0 +1,64 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  token_builder_options.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+import "activething.com/go/gogo/core/opts"
+
+type (
+
+	BuilderOptions 	struct {
+		Sep      	byte
+		Wildcard 	byte
+		Relative 	byte
+		MatchIni 	byte
+		MatchEnd 	byte
+
+		TokenMinLen int
+		TokenMaxLen int
+		TopicMinLen int
+		TopicMaxLen    int
+		TopicMinTokens int
+		TopicMaxTokens int
+	}
+
+
+)
+
+
+func NewBuilderOptions (options ... opts.OptionFnc[BuilderOptions]) *BuilderOptions {
+	return opts.Apply(&BuilderOptions{
+		Sep      	 : tokenSep,
+		Wildcard 	 : tokenWildcard,
+		Relative 	 : tokenRelative,
+		MatchIni 	 : tokenMatchIni,
+		MatchEnd 	 : tokenMatchEnd,
+
+		TokenMinLen:    tokenMinLen,
+		TokenMaxLen:    tokenMaxLen,
+		TopicMinLen:    topicMinLen,
+		TopicMaxLen:    topicMaxLen,
+		TopicMinTokens: topicMinTokens,
+		TopicMaxTokens: topicMaxTokens,
+	}, options ...)
+}
\ No newline at end of file
diff --git a/sapis/tokens/gogo.go b/sapis/tokens/gogo.go
new file mode 100644
index 0000000..5c75228
--- /dev/null
+++ b/sapis/tokens/gogo.go
@@ -0,0 +1,72 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  gogo.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+import "activething.com/go/gogo/core/errs"
+
+
+
+
+const (
+	topicMinLen    int = 1
+	topicMaxLen    int = 255
+	topicMaxTokens int = 32
+	topicMinTokens int = 1
+
+	tokenMinLen    int = 1
+	tokenMaxLen    int = 256
+
+	//
+	// Token chars
+	//
+	tokenSep      byte = '.'
+	tokenWildcard byte = '*'
+	tokenRelative byte = '+'
+	tokenMatchIni byte = '{'
+	tokenMatchEnd byte = '}'
+)
+
+
+
+
+var (
+
+	G = struct {
+
+		ErrInvalidTopic    errs.ErrCode
+		ErrInvalidTopicLen errs.ErrCode
+		ErrInvalidToken    errs.ErrCode
+		ErrInvalidTokenLen errs.ErrCode
+
+	}{
+
+		ErrInvalidTopic 	: errs.ErrCode ("sapis:tokens.invalid-topic"),
+		ErrInvalidTopicLen 	: errs.ErrCode ("sapis:tokens.invalid-topic-len"),
+		ErrInvalidToken 	: errs.ErrCode  ("sapis:tokens.invalid-token"),
+		ErrInvalidTokenLen	: errs.ErrCode ("sapis:tokens.invalid-token-len"),
+
+	}
+
+)
+
diff --git a/sapis/tokens/token_invalid.go b/sapis/tokens/token_invalid.go
new file mode 100644
index 0000000..33b4fc0
--- /dev/null
+++ b/sapis/tokens/token_invalid.go
@@ -0,0 +1,68 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  token_invalid.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+
+
+type (
+
+
+	TokenInvalid struct {
+		/*embedded*/ error
+		source []byte
+	}
+)
+
+
+func NewTokenInvalid(err error, src []byte) *TokenInvalid {
+	return &TokenInvalid{
+		error:  err,
+		source: src,
+	}
+}
+
+
+func (_ TokenInvalid) Kind() TokenKind {
+	return TokenKindInvalid }
+
+
+func (_ TokenInvalid) Match(_ []byte) bool {
+	return false }
+
+func (t TokenInvalid) Source() []byte {
+	return t.source }
+
+
+/*
+   ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+   I HAVE NO DESIRE TO WALK ON WATER," SAID SIDDHARTA.
+   "LET THE OLD SHRAMANAS SATISFY THEMSELVES WITH SUCH SKILLS.
+
+   SIDDHARTA
+   - HERMANN HESSE -
+
+   :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+*/
diff --git a/sapis/tokens/token_matcher.go b/sapis/tokens/token_matcher.go
new file mode 100644
index 0000000..20808ed
--- /dev/null
+++ b/sapis/tokens/token_matcher.go
@@ -0,0 +1,73 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  token_matcher.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+import "activething.com/go/gogo/sapis/matches"
+
+type (
+
+
+	TokenMatcher struct {
+		source  []byte
+		MatchFn matches.MatchFnc
+	}
+)
+
+
+
+func NewTokenMatcher(mfn matches.MatchFnc, src []byte) *TokenMatcher {
+	return &TokenMatcher{
+		MatchFn: mfn,
+		source:  src,
+	}
+}
+
+
+func (_ TokenMatcher) Kind() TokenKind {
+	return TokenKindMatcher }
+
+
+func (t TokenMatcher) Match(val []byte) bool {
+	return t.MatchFn(val) }
+
+
+func (t TokenMatcher) Source() []byte {
+	return t.source }
+
+
+/*
+   ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+   I HAVE NO DESIRE TO WALK ON WATER," SAID SIDDHARTA.
+   "LET THE OLD SHRAMANAS SATISFY THEMSELVES WITH SUCH SKILLS.
+
+   SIDDHARTA
+   - HERMANN HESSE -
+
+   :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+*/
+
+
+
diff --git a/sapis/tokens/token_relative.go b/sapis/tokens/token_relative.go
new file mode 100644
index 0000000..71f2bfa
--- /dev/null
+++ b/sapis/tokens/token_relative.go
@@ -0,0 +1,59 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  token_relative.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+
+
+type (
+
+
+	TokenRelative struct{}
+)
+
+
+func (_ TokenRelative) Kind() TokenKind {
+	return TokenKindRelative }
+
+
+func (_ TokenRelative) Match(_ []byte) bool {
+	return true }
+
+
+func (t TokenRelative) Source() []byte {
+	return nil }
+
+
+
+/*
+   ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+   I HAVE NO DESIRE TO WALK ON WATER," SAID SIDDHARTA.
+   "LET THE OLD SHRAMANAS SATISFY THEMSELVES WITH SUCH SKILLS.
+
+   SIDDHARTA
+   - HERMANN HESSE -
+
+   :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+*/
\ No newline at end of file
diff --git a/sapis/tokens/token_wildcard.go b/sapis/tokens/token_wildcard.go
new file mode 100644
index 0000000..09e789f
--- /dev/null
+++ b/sapis/tokens/token_wildcard.go
@@ -0,0 +1,60 @@
+// ------------------------------------------------------------------------
+//   Project atila
+//   Active Thing (activething.com) git.activething.com/go
+//
+//   File name  token_wildcard.go
+//   Created by DEV
+//   Modified   18/02/2024
+//
+//   Copyright 2024 activething.com 
+// ------------------------------------------------------------------------
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ------------------------------------------------------------------------
+
+package tokens
+
+
+
+type (
+
+
+	TokenWildcard struct{}
+)
+
+
+func (_ TokenWildcard) Kind() TokenKind {
+	return TokenKindWildcard }
+
+
+func (_ TokenWildcard) Match(_ []byte) bool {
+	return true }
+
+
+func (t TokenWildcard) Source() []byte {
+	return nil }
+
+/*
+   ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+   I HAVE NO DESIRE TO WALK ON WATER," SAID SIDDHARTA.
+   "LET THE OLD SHRAMANAS SATISFY THEMSELVES WITH SUCH SKILLS.
+
+   SIDDHARTA
+   - HERMANN HESSE -
+
+   :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+
+*/
+
+
+