diff --git a/pkg/config/config.go b/pkg/config/config.go
index f7d4646..70d01cb 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -63,6 +63,8 @@ type Config struct {
 	Prompt              Prompt              `json:"prompt,omitempty"`
 	Tools               *bool               `json:"tools,omitempty"`
 	TrustedTools        []string            `json:"trustedTools,omitempty"`
+	AllowExecutors      []string            `json:"allowExecutors,omitempty"`
+	AllowTools          []string            `json:"allowTools,omitempty"`
 	MaxTokens           int                 `json:"maxTokens,omitempty"`
 	MaxCompletionTokens int                 `json:"maxCompletionTokens,omitempty"`
 	// MaxSteps caps the number of tool-call rounds per turn. 0 means unlimited.
diff --git a/pkg/tools/execute/code.go b/pkg/tools/execute/code.go
index d2c01fc..9987e5f 100644
--- a/pkg/tools/execute/code.go
+++ b/pkg/tools/execute/code.go
@@ -107,6 +107,9 @@ var languagePatterns = map[string][]*regexp.Regexp{
 
 // Dispatch routes a named execute tool call.
 func (e *Server) Dispatch(ctx context.Context, name string, args json.RawMessage) (string, error) {
+	if len(e.allowExecutors) > 0 && !e.allowExecutors[name] {
+		return "", fmt.Errorf("executor %q not permitted in this agent context", name)
+	}
 	switch name {
 	case "execute_code":
 		return dispatchExecuteCode(ctx, e, args)
@@ -209,12 +212,18 @@ func dispatchCallTool(ctx context.Context, e *Server, args json.RawMessage) (str
 				if p.Tool == "" {
 					return "", fmt.Errorf("call_tool: calls[%d].parallel[%d]: tool name is required", i, j)
 				}
+				if len(e.allowTools) > 0 && !e.allowTools[p.Tool] {
+					return "", fmt.Errorf("call_tool: tool %q not permitted in this agent context", p.Tool)
+				}
 			}
 			continue
 		}
 		if c.Tool == "" {
 			return "", fmt.Errorf("call_tool: calls[%d]: tool name is required", i)
 		}
+		if len(e.allowTools) > 0 && !e.allowTools[c.Tool] {
+			return "", fmt.Errorf("call_tool: tool %q not permitted in this agent context", c.Tool)
+		}
 	}
 	return e.dispatchSteps(ctx, calls, timeout, sandboxName)
 }
@@ -302,6 +311,19 @@ func (e *Server) dispatchPipe(ctx context.Context, pipe []CodeStep, timeout int,
 		}
 	}
 
+	if len(e.allowTools) > 0 {
+		for i, s := range pipe {
+			if s.Tool != "" && !e.allowTools[s.Tool] {
+				return "", fmt.Errorf("pipe: stage %d: tool %q not permitted in this agent context", i, s.Tool)
+			}
+			for j, p := range s.Parallel {
+				if p.Tool != "" && !e.allowTools[p.Tool] {
+					return "", fmt.Errorf("pipe: stage %d.parallel[%d]: tool %q not permitted in this agent context", i, j, p.Tool)
+				}
+			}
+		}
+	}
+
 	label := buildExecLabel(pipe)
 	if !e.allowed("execute_code", label) {
 		return "", fmt.Errorf("execute_code: denied by user")
diff --git a/pkg/tools/execute/server.go b/pkg/tools/execute/server.go
index fdfa2a8..32311b7 100644
--- a/pkg/tools/execute/server.go
+++ b/pkg/tools/execute/server.go
@@ -55,6 +55,14 @@ type Server struct {
 	// Yolo skips the landrun sandbox for all execution.
 	Yolo bool
 
+	// allowExecutors restricts which executors (execute_code, call_tool, pipe)
+	// are available. Empty means all are allowed.
+	allowExecutors map[string]bool
+
+	// allowTools restricts which named tool scripts can be invoked via call_tool/pipe.
+	// Empty means all are allowed.
+	allowTools map[string]bool
+
 	// rate limiting state (per-Server)
 	rateLimitMu        sync.Mutex
 	validationFailures int
@@ -71,6 +79,42 @@ func WithStrict() Option { return func(s *Server) { s.Strict = true } }
 // WithYolo skips the landrun sandbox.
 func WithYolo() Option { return func(s *Server) { s.Yolo = true } }
 
+// WithAllowExecutors restricts which executors are available.
+func WithAllowExecutors(names []string) Option {
+	return func(s *Server) {
+		if len(names) > 0 {
+			s.allowExecutors = make(map[string]bool, len(names))
+			for _, n := range names {
+				s.allowExecutors[n] = true
+			}
+		}
+	}
+}
+
+// WithAllowTools restricts which tool scripts can be invoked.
+func WithAllowTools(names []string) Option {
+	return func(s *Server) {
+		if len(names) > 0 {
+			s.allowTools = make(map[string]bool, len(names))
+			for _, n := range names {
+				s.allowTools[n] = true
+			}
+		}
+	}
+}
+
+// AllowTools returns the set of allowed tool names, or nil if unrestricted.
+func (e *Server) AllowTools() []string {
+	if len(e.allowTools) == 0 {
+		return nil
+	}
+	out := make([]string, 0, len(e.allowTools))
+	for k := range e.allowTools {
+		out = append(out, k)
+	}
+	return out
+}
+
 // Decl returns a factory for an execute Server with the given working directory.
 func Decl(cwd string, opts ...Option) func() tools.Server {
 	return func() tools.Server {
@@ -85,7 +129,7 @@ func Decl(cwd string, opts ...Option) func() tools.Server {
 // ListTools implements tools.Server, returning ToolInfo for execute_code,
 // call_tool, and pipe.
 func (e *Server) ListTools() ([]tools.ToolInfo, error) {
-	return []tools.ToolInfo{
+	all := []tools.ToolInfo{
 		{
 			Name: "execute_code",
 			Description: `Run one or more inline code steps in a sandboxed environment.
@@ -141,10 +185,10 @@ Examples:
 		},
 		{
 			Name: "call_tool",
-			Description: `Run one or more named scripts from $OLLIE/t (the tools directory).
+			Description: `Run one or more named scripts from $OLLIE/s/$SID/t (the tools directory).
 
 Tool names and their arguments are discoverable via:
-  grep -iA2 'keyword' $OLLIE/t/idx
+  grep -iA2 'keyword' $OLLIE/s/$SID/t/idx
 
 call_tool fans out in parallel when consecutive calls carry an ollie:parallel read
 annotation in their script header; write-annotated or unannotated tools run serially.
@@ -201,7 +245,7 @@ Use this when you need to chain heterogeneous code and tool steps together.
 
 Each stage is one of:
 - {code, language}              — inline code (default: bash)
-- {tool, args}                  — named script from $OLLIE/t
+- {tool, args}                  — named script from $OLLIE/s/$SID/t
 - {elevated: true, code/tool}   — run outside sandbox
 - {parallel: [{code/tool}...]}  — fan-out within a stage; outputs concatenated, fed to next stage
 
@@ -249,7 +293,17 @@ Examples:
 				}
 			}`),
 		},
-	}, nil
+	}
+	if len(e.allowExecutors) > 0 {
+		filtered := all[:0]
+		for _, t := range all {
+			if e.allowExecutors[t.Name] {
+				filtered = append(filtered, t)
+			}
+		}
+		return filtered, nil
+	}
+	return all, nil
 }
 
 // CallTool implements tools.Server.