diff --git a/api/coot-molecule.cc b/api/coot-molecule.cc
index 97deda596..6d906d474 100644
--- a/api/coot-molecule.cc
+++ b/api/coot-molecule.cc
@@ -196,6 +196,15 @@ coot::molecule_t::cid_to_residues(const std::string &atom_selection_cids) const
    return v;
 }
 
+// can return null
+mmdb::Residue *
+coot::molecule_t::get_residue(const std::string &residue_cid) const {
+
+   mmdb::Residue *residue_p = cid_to_residue(residue_cid);
+   return residue_p;
+}
+
+
 
 
 // restore from (previous) backup
diff --git a/api/coot-molecule.hh b/api/coot-molecule.hh
index c337caa1a..f19cdc87c 100644
--- a/api/coot-molecule.hh
+++ b/api/coot-molecule.hh
@@ -597,6 +597,9 @@ namespace coot {
       // returns either the specified residue or null if not found
       mmdb::Residue *get_residue(const residue_spec_t &residue_spec) const;
 
+      // can return null
+      mmdb::Residue *get_residue(const std::string &residue_cid) const;
+
       std::string get_residue_name(const residue_spec_t &residue_spec) const;
 
       bool have_unsaved_changes() const { return modification_info.have_unsaved_changes(); }
diff --git a/api/molecules-container-nanobind.cc b/api/molecules-container-nanobind.cc
index c06e53d0f..b14829696 100644
--- a/api/molecules-container-nanobind.cc
+++ b/api/molecules-container-nanobind.cc
@@ -6,14 +6,15 @@
 #include <nanobind/ndarray.h>
 #include <nanobind/operators.h>
 
-#include "molecules-container.hh"
-#include "mini-mol/mini-mol-utils.hh"
-
 #include "clipper/core/ramachandran.h"
 #include "clipper/clipper-ccp4.h"
 
-#include "coot-utils/g_triangle.hh"
 #include "coords/mmdb-crystal.h"
+#include "coot-utils/acedrg-types-for-residue.hh"
+#include "coot-utils/g_triangle.hh"
+#include "mini-mol/mini-mol-utils.hh"
+#include "molecules-container.hh"
+
 
 namespace nb = nanobind;
 
@@ -257,6 +258,7 @@ NB_MODULE(chapi, m) {
     .def("geometry_init_standard",&molecules_container_t::geometry_init_standard)
     .def("get_active_atom",&molecules_container_t::get_active_atom)
     .def("get_acedrg_atom_types",&molecules_container_t::get_acedrg_atom_types)
+    .def("get_acedrg_atom_types_for_ligand",&molecules_container_t::get_acedrg_atom_types_for_ligand)
     .def("get_atom",&molecules_container_t::get_atom, nb::rv_policy::reference)
     .def("get_atom_using_cid",&molecules_container_t::get_atom_using_cid, nb::rv_policy::reference)
     .def("get_bonds_mesh",&molecules_container_t::get_bonds_mesh)
@@ -556,6 +558,16 @@ NB_MODULE(chapi, m) {
     .def_ro("geom",   &coot::instanced_mesh_t::geom)
     .def_ro("markup", &coot::instanced_mesh_t::markup)
     ;
+    nb::class_<coot::acedrg_types_for_bond_t>(m,"acedrg_types_for_bond_t")
+       .def_ro("atom_id_1",   &coot::acedrg_types_for_bond_t::atom_id_1)
+       .def_ro("atom_id_2",   &coot::acedrg_types_for_bond_t::atom_id_2)
+       .def_ro("atom_type_1", &coot::acedrg_types_for_bond_t::atom_type_1)
+       .def_ro("atom_type_2", &coot::acedrg_types_for_bond_t::atom_type_2)
+       .def_ro("bond_length", &coot::acedrg_types_for_bond_t::bond_length)
+    ;
+    nb::class_<coot::acedrg_types_for_residue_t>(m,"acedrg_types_for_residue_t")
+        .def_ro("bond_types", &coot::acedrg_types_for_residue_t::bond_types)
+    ;
     nb::class_<coot::util::phi_psi_t>(m,"phi_psi_t")
     .def("phi",               &coot::util::phi_psi_t::phi)
     .def("psi",               &coot::util::phi_psi_t::psi)
diff --git a/api/molecules-container.cc b/api/molecules-container.cc
index 2b50a0bcb..f58db3c44 100644
--- a/api/molecules-container.cc
+++ b/api/molecules-container.cc
@@ -5405,6 +5405,24 @@ molecules_container_t::get_acedrg_atom_types(const std::string &compound_id, int
 
 }
 
+//! get acedrg types for ligand bonds
+//! @return a vector of `acedrg_types_for_residue_t`
+coot::acedrg_types_for_residue_t
+molecules_container_t::get_acedrg_atom_types_for_ligand(int imol, const std::string &residue_cid) const {
+
+   coot::acedrg_types_for_residue_t types;
+
+   if (is_valid_model_molecule(imol)) {
+      mmdb::Residue *residue_p = molecules[imol].get_residue(residue_cid);
+      if (residue_p) {
+         int imol_enc = imol;
+         types = coot::get_acedrg_types_for_residue(residue_p, imol_enc, geom);
+      }
+   }
+   return types;
+}
+
+
 
 
 //! export map molecule as glTF
diff --git a/api/molecules-container.hh b/api/molecules-container.hh
index 1bada00e7..4200b3506 100644
--- a/api/molecules-container.hh
+++ b/api/molecules-container.hh
@@ -669,6 +669,10 @@ public:
    //! on failure (atoms types are not in the dictionary or atom failure to look up the compound id)l
    std::vector<std::pair<std::string, std::string> > get_acedrg_atom_types(const std::string &compound_id, int imol_enc) const;
 
+   //! get acedrg types for ligand bonds
+   //! @return a vector of `acedrg_types_for_residue_t`
+   coot::acedrg_types_for_residue_t get_acedrg_atom_types_for_ligand(int imol, const std::string &residue_cid) const;
+
    //! write a PNG for the given compound_id. imol can be IMOL_ENC_ANY
    //!
    //! Currently this function does nothing (drawing is done with the not-allowed cairo)
diff --git a/api/test-molecules-container.cc b/api/test-molecules-container.cc
index cac983600..60bb9b135 100644
--- a/api/test-molecules-container.cc
+++ b/api/test-molecules-container.cc
@@ -2,17 +2,18 @@
 #include <iostream>
 #include <iomanip>
 
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 #define GLM_ENABLE_EXPERIMENTAL
 #include <glm/gtx/string_cast.hpp>
 #include "MoleculesToTriangles/CXXClasses/MyMolecule.h"
 #include "molecules-container.hh"
+#include "coot-utils/acedrg-types-for-residue.hh"
 #include "filo-tests.hh"
 #include "lucrezia-tests.hh"
 
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
 void starting_test(const char *func) {
    std::cout << "\nStarting " << func << "()" << std::endl;
 }
@@ -5933,6 +5934,26 @@ int test_dictionary_acedrg_atom_types(molecules_container_t &mc) {
    return status;
 }
 
+int test_dictionary_acedrg_atom_types_for_ligand(molecules_container_t &mc) {
+
+   starting_test(__FUNCTION__);
+   int status = 0;
+
+   mc.import_cif_dictionary("YXG-as-LIG.cif", coot::protein_geometry::IMOL_ENC_ANY);
+   int imol = mc.get_monomer_from_dictionary("LIG", coot::protein_geometry::IMOL_ENC_ANY, false);
+   coot::acedrg_types_for_residue_t types = mc.get_acedrg_atom_types_for_ligand(imol, "//A/1");
+
+   std::cout << "------------- types (bond) ----------- " << std::endl;
+   for (unsigned int i=0; i<types.bond_types.size(); i++) {
+      const auto &bond_types = types.bond_types[i];
+      std::cout << "bond_type "
+                << bond_types.atom_id_1 << " " << bond_types.atom_type_1 << " "
+                << bond_types.atom_id_2 << " " << bond_types.atom_type_2
+                << " bond-length: " << bond_types.bond_length << std::endl;
+   }
+   if (types.bond_types.size() > 10) status = 1;
+   return status;
+}
 
 
 int test_template(molecules_container_t &mc) {
@@ -6247,6 +6268,7 @@ int main(int argc, char **argv) {
          // status += run_test(test_import_LIG_dictionary,   "Import LIG.cif", mc);
          // status += run_test(test_tricky_ligand_problem,   "Tricky Ligand import/refine", mc);
          status += run_test(test_dictionary_acedrg_atom_types, "Acedrg atom types", mc);
+         status += run_test(test_dictionary_acedrg_atom_types_for_ligand, "Acedrg atom types for ligand", mc);
 
          if (status == n_tests) all_tests_status = 0;
 
diff --git a/coot-utils/Makefile.am b/coot-utils/Makefile.am
index f723b1267..6c8229cd4 100644
--- a/coot-utils/Makefile.am
+++ b/coot-utils/Makefile.am
@@ -44,7 +44,8 @@ pkginclude_HEADERS = peak-search.hh coot-trim.hh \
         atom-tree.hh jed-flip.hh atom-vertex.hh merge-C-and-N-terminii.hh simple-mesh.hh vertex.hh g_triangle.hh \
 	cylinder.hh cylinder-with-rotation-translation.hh oct.hh prideout-octasphere.hh cmtz-interface.hh mtz-column-auto-read.hh \
 	pugixml.hpp pugiconfig.hpp find-water-baddies.hh voidp-buffer.hh parse-pisa.hh diff-diff-map-peaks.hh tiny_gltf.h json.hpp \
-	stb_image.h stb_image_write.h glyco-tree.hh positron.hh mini-texture.hh texture-as-floats.hh pae.hh q-score.hh
+	stb_image.h stb_image_write.h glyco-tree.hh positron.hh mini-texture.hh texture-as-floats.hh pae.hh q-score.hh \
+	acedrg-types-for-residue.hh
 
 
 pkgincludedir = $(includedir)/coot/coot-utils
diff --git a/coot-utils/acedrg-types-for-residue.hh b/coot-utils/acedrg-types-for-residue.hh
new file mode 100644
index 000000000..752a1a639
--- /dev/null
+++ b/coot-utils/acedrg-types-for-residue.hh
@@ -0,0 +1,46 @@
+
+#ifndef ACEDRG_TYPES_FOR_RESIDUE_HH
+#define ACEDRG_TYPES_FOR_RESIDUE_HH
+
+#include <string>
+#include <vector>
+
+namespace coot {
+
+   class acedrg_types_for_bond_t {
+   public:
+      std::string atom_id_1;
+      std::string atom_id_2;
+      std::string atom_type_1;
+      std::string atom_type_2;
+      double bond_length;
+      acedrg_types_for_bond_t() : bond_length(-1) {}
+      acedrg_types_for_bond_t(const std::string &a11, const std::string &a12, const std::string &a21, const std::string &a22,
+                              double bl) : atom_id_1(a11), atom_id_2(a12), atom_type_1(a21), atom_type_2(a22),
+                                           bond_length(bl) {}
+   };
+
+   class acedrg_types_for_angle_t {
+   public:
+      std::string atom_id_1;
+      std::string atom_id_2;
+      std::string atom_id_3;
+      std::string atom_type_1;
+      std::string atom_type_2;
+      std::string atom_type_3;
+      double angle; // radians
+      acedrg_types_for_angle_t(const std::string &a11, const std::string &a12, const std::string &a13,
+                               const std::string &a21, const std::string &a22, const std::string &a23,
+                               double a) : atom_id_1(a11), atom_id_2(a12), atom_id_3(a13),
+                                           atom_type_1(a21), atom_type_2(a22), atom_type_3(a23),
+                                           angle(a) {}
+   };
+
+   class acedrg_types_for_residue_t {
+   public:
+      std::vector<acedrg_types_for_bond_t> bond_types;
+   };
+
+}
+
+#endif // ACEDRG_TYPES_FOR_RESIDUE_HH
diff --git a/coot-utils/coot-coord-extras.cc b/coot-utils/coot-coord-extras.cc
index 357f3cdeb..cdeba3a42 100644
--- a/coot-utils/coot-coord-extras.cc
+++ b/coot-utils/coot-coord-extras.cc
@@ -21,6 +21,7 @@
  */
 
 
+#include <cmath>
 #include <stdexcept>
 #include <iomanip>
 #include <algorithm> // for std::find
@@ -28,6 +29,7 @@
 #include <string>
 #include <functional>
 
+#include "acedrg-types-for-residue.hh"
 #include "string.h"
 
 #include "compat/coot-sysdep.h"
@@ -2005,3 +2007,57 @@ coot::util::mutate_by_overlap(mmdb::Residue *residue_p, mmdb::Manager *mol,
    return status;
 }
 
+coot::acedrg_types_for_residue_t
+coot::get_acedrg_types_for_residue(mmdb::Residue *residue_p, int imol_enc,
+                                   const coot::protein_geometry &geom) {
+
+   coot::acedrg_types_for_residue_t types;
+   std::string residue_type = residue_p->GetResName();
+   auto r = geom.get_monomer_restraints(residue_type, imol_enc);
+   if (r.first) {
+      const auto &restraints = r.second;
+      for (unsigned int ib=0; ib<restraints.bond_restraint.size(); ib++) {
+         const auto &bond_restraint = restraints.bond_restraint[ib];
+         const std::string &atom_name_1 = bond_restraint.atom_id_1();
+         const std::string &atom_name_2 = bond_restraint.atom_id_2();
+         mmdb::Atom **residue_atoms = 0;
+         int n_residue_atoms = 0;
+         int idx_1 = -1;
+         int idx_2 = -1;
+         residue_p->GetAtomTable(residue_atoms, n_residue_atoms);
+         for (int iat=0; iat<n_residue_atoms; iat++) {
+            mmdb::Atom *at = residue_atoms[iat];
+            if (! at->isTer()) {
+               std::string atom_name = at->GetAtomName();
+               if (atom_name == atom_name_1) idx_1 = iat;
+               if (atom_name == atom_name_2) idx_2 = iat;
+            }
+         }
+         if (idx_1 != -1) {
+            if (idx_2 != -1) {
+               clipper::Coord_orth at_pos_1 = co(residue_atoms[idx_1]);
+               clipper::Coord_orth at_pos_2 = co(residue_atoms[idx_2]);
+               double bb = (at_pos_2 - at_pos_1).lengthsq();
+               double bond_length = std::sqrt(bb);
+
+               std::string type_1;
+               std::string type_2;
+
+               for (unsigned int ii=0; ii<restraints.atom_info.size(); ii++) {
+                  const auto &atom = restraints.atom_info[ii];
+                  if (atom.atom_id_4c == atom_name_1) type_1 = atom.acedrg_atom_type;
+                  if (atom.atom_id_4c == atom_name_2) type_2 = atom.acedrg_atom_type;
+               }
+
+               if (! type_1.empty()) {
+                  if (! type_2.empty()) {
+                     acedrg_types_for_bond_t bt(atom_name_1, atom_name_2, type_1, type_2, bond_length);
+                     types.bond_types.push_back(bt);
+                  }
+               }
+            }
+         }
+      }
+   }
+   return types;
+}
diff --git a/coot-utils/coot-coord-extras.hh b/coot-utils/coot-coord-extras.hh
index d4b37f5f0..7e30ec534 100644
--- a/coot-utils/coot-coord-extras.hh
+++ b/coot-utils/coot-coord-extras.hh
@@ -32,6 +32,7 @@
 #include "mini-mol/atom-quads.hh"
 #include "mini-mol/mini-mol.hh"
 #include "bonded-pairs.hh"
+#include "acedrg-types-for-residue.hh"
 
 // functions and classes here (in extras) can use protein_geometry.
 
@@ -372,6 +373,10 @@ namespace coot {
                                  const protein_geometry *geom_p,
                                  bool strictly_cis_flag = false);
 
+
+   acedrg_types_for_residue_t get_acedrg_types_for_residue(mmdb::Residue *residue_p, int imol_enc,
+                                                           const protein_geometry &geom);
+
 }
 
 #endif // HAVE_COOT_COORD_EXTRAS_HH
diff --git a/coot-utils/coot-coord-utils.cc b/coot-utils/coot-coord-utils.cc
index 554b1c062..8a58fbe3b 100644
--- a/coot-utils/coot-coord-utils.cc
+++ b/coot-utils/coot-coord-utils.cc
@@ -9583,3 +9583,5 @@ coot::util::split_multi_model_molecule(mmdb::Manager *mol) {
 
    return v;
 }
+
+
diff --git a/rel-todo-gtk4 b/rel-todo-gtk4
index 4d6eb64b6..1872c42be 100644
--- a/rel-todo-gtk4
+++ b/rel-todo-gtk4
@@ -3,6 +3,7 @@
 
 chapi: a function to return a list of tuples atom types for ligand:
 get_acedrg_atom_types(comp_id, imol_enc);
+* Done.
 
 chapi: a function to return a list of tuples atom types for ligand:
 (name_1, name_2, type_1, type_2, bond_length)