diff --git a/docs/roadmap/implementation.md b/docs/roadmap/implementation.md
index 118b15d..0dddb07 100644
--- a/docs/roadmap/implementation.md
+++ b/docs/roadmap/implementation.md
@@ -16,7 +16,7 @@ different contract.
 
 | Stage | Outcome | Status |
 | ---: | --- | --- |
-| 1 | Add the reference-selector and configuration vocabulary, including optional spell-catalog inputs. | Pending |
+| 1 | Add the reference-selector and configuration vocabulary, including optional spell-catalog inputs. | Completed |
 | 2 | Materialize and inventory the optional spell catalog through the prepare and operator lifecycle. | Pending |
 | 3 | Centralize manifest-authoritative prepared-input resolution and migrate analyze to it. | Pending |
 | 4 | Add deterministic Notarius v0.6 reference arguments at the subprocess adapter boundary. | Pending |
diff --git a/internal/artifactpolicy/policy.go b/internal/artifactpolicy/policy.go
index c5cafcc..306f9bc 100644
--- a/internal/artifactpolicy/policy.go
+++ b/internal/artifactpolicy/policy.go
@@ -13,9 +13,10 @@ import (
 const (
 	SourceBoundsSession = "narratio.bounds.session"
 
-	SourceInputPlayers  = "narratio.input.players"
-	SourceInputParty    = "narratio.input.party"
-	SourceInputGlossary = "narratio.input.glossary"
+	SourceInputPlayers      = "narratio.input.players"
+	SourceInputParty        = "narratio.input.party"
+	SourceInputGlossary     = "narratio.input.glossary"
+	SourceInputSpellCatalog = "narratio.input.spell_catalog"
 
 	configuredSourcePrefix      = "narratio.artifact."
 	extractionSourcePrefix      = "narratio.extraction."
@@ -52,9 +53,18 @@ type Source struct {
 // ScriptoriumInputSourceDescriptor describes one validated Scriptorium input source.
 type ScriptoriumInputSourceDescriptor struct {
 	Source          Source
+	PreparedInput   *PreparedInputSourceDescriptor
 	PreviousSession *PreviousSessionSourceDescriptor
 }
 
+// PreparedInputSourceDescriptor describes a prepared stable input's source,
+// manifest kind, and canonical staged filename.
+type PreparedInputSourceDescriptor struct {
+	SourceID     string
+	ManifestKind string
+	Filename     string
+}
+
 // PreviousSessionSourceDescriptor describes one canonical previous-session input source.
 type PreviousSessionSourceDescriptor struct {
 	SourceID           string
@@ -158,9 +168,10 @@ func DescribeScriptoriumInputSource(source string) (ScriptoriumInputSourceDescri
 	if trimmed == "" {
 		return ScriptoriumInputSourceDescriptor{}, ErrUnsupportedScriptoriumInputSource
 	}
-	if IsStableInputSource(trimmed) {
+	if prepared, ok := DescribePreparedInputSource(trimmed); ok {
 		return ScriptoriumInputSourceDescriptor{
-			Source: Source{ID: trimmed, Kind: SourceKindStableInput},
+			Source:        Source{ID: prepared.SourceID, Kind: SourceKindStableInput},
+			PreparedInput: &prepared,
 		}, nil
 	}
 	if strings.HasPrefix(trimmed, "narratio.previous_session.artifact") {
@@ -188,12 +199,38 @@ func DescribeScriptoriumInputSource(source string) (ScriptoriumInputSourceDescri
 // IsStableInputSource reports whether source is a prepared stable input source
 // available only to Scriptorium input resolution.
 func IsStableInputSource(source string) bool {
-	switch strings.TrimSpace(source) {
-	case SourceInputPlayers, SourceInputParty, SourceInputGlossary:
-		return true
-	default:
-		return false
-	}
+	_, ok := DescribePreparedInputSource(source)
+	return ok
+}
+
+var preparedInputSources = map[string]PreparedInputSourceDescriptor{
+	SourceInputPlayers: {
+		SourceID:     SourceInputPlayers,
+		ManifestKind: "players",
+		Filename:     "players.yml",
+	},
+	SourceInputParty: {
+		SourceID:     SourceInputParty,
+		ManifestKind: "party",
+		Filename:     "party.yml",
+	},
+	SourceInputGlossary: {
+		SourceID:     SourceInputGlossary,
+		ManifestKind: "glossary",
+		Filename:     "glossary.yml",
+	},
+	SourceInputSpellCatalog: {
+		SourceID:     SourceInputSpellCatalog,
+		ManifestKind: "spell_catalog",
+		Filename:     "spell_catalog.json",
+	},
+}
+
+// DescribePreparedInputSource returns the canonical descriptor for a prepared
+// stable input source.
+func DescribePreparedInputSource(source string) (PreparedInputSourceDescriptor, bool) {
+	descriptor, ok := preparedInputSources[strings.TrimSpace(source)]
+	return descriptor, ok
 }
 
 // DescribePreviousSessionSource validates a canonical previous-session source id
diff --git a/internal/artifactpolicy/policy_test.go b/internal/artifactpolicy/policy_test.go
index 19b0e4b..887b790 100644
--- a/internal/artifactpolicy/policy_test.go
+++ b/internal/artifactpolicy/policy_test.go
@@ -170,6 +170,7 @@ func TestDescribeScriptoriumInputSource(t *testing.T) {
 		{name: "prepared players input", source: "narratio.input.players", wantKind: SourceKindStableInput},
 		{name: "prepared party input", source: "narratio.input.party", wantKind: SourceKindStableInput},
 		{name: "prepared glossary input", source: "narratio.input.glossary", wantKind: SourceKindStableInput},
+		{name: "prepared spell catalog input", source: "narratio.input.spell_catalog", wantKind: SourceKindStableInput},
 		{name: "configured", source: "narratio.artifact.session_recap", wantKind: SourceKindConfiguredArtifact, wantKey: "session_recap"},
 		{name: "previous", source: "narratio.previous_session.artifact.session_recap", wantKind: SourceKindPreviousArtifact, wantKey: "session_recap", wantPrev: true},
 		{name: "invalid previous", source: "narratio.previous_session.artifact.", wantErr: ErrInvalidPreviousSessionSource},
@@ -211,6 +212,43 @@ func TestDescribeScriptoriumInputSource(t *testing.T) {
 	}
 }
 
+func TestDescribePreparedInputSource(t *testing.T) {
+	tests := []struct {
+		source       string
+		manifestKind string
+		filename     string
+	}{
+		{source: SourceInputPlayers, manifestKind: "players", filename: "players.yml"},
+		{source: SourceInputParty, manifestKind: "party", filename: "party.yml"},
+		{source: SourceInputGlossary, manifestKind: "glossary", filename: "glossary.yml"},
+		{source: SourceInputSpellCatalog, manifestKind: "spell_catalog", filename: "spell_catalog.json"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.manifestKind, func(t *testing.T) {
+			descriptor, ok := DescribePreparedInputSource(" " + tt.source + " ")
+			if !ok {
+				t.Fatalf("DescribePreparedInputSource(%q) ok = false", tt.source)
+			}
+			if descriptor.SourceID != tt.source || descriptor.ManifestKind != tt.manifestKind || descriptor.Filename != tt.filename {
+				t.Fatalf("DescribePreparedInputSource(%q) = %#v", tt.source, descriptor)
+			}
+
+			scriptoriumDescriptor, err := DescribeScriptoriumInputSource(tt.source)
+			if err != nil {
+				t.Fatalf("DescribeScriptoriumInputSource(%q) error = %v", tt.source, err)
+			}
+			if scriptoriumDescriptor.PreparedInput == nil || *scriptoriumDescriptor.PreparedInput != descriptor {
+				t.Fatalf("prepared input descriptor = %#v, want %#v", scriptoriumDescriptor.PreparedInput, descriptor)
+			}
+		})
+	}
+
+	if _, ok := DescribePreparedInputSource("narratio.input.unknown"); ok {
+		t.Fatal("DescribePreparedInputSource(unknown) ok = true")
+	}
+}
+
 func TestValidateInputConfiguredReference(t *testing.T) {
 	configured := map[string]struct{}{"session_recap": {}}
 
diff --git a/internal/config/campaign_config_test.go b/internal/config/campaign_config_test.go
index 6843128..5147804 100644
--- a/internal/config/campaign_config_test.go
+++ b/internal/config/campaign_config_test.go
@@ -138,6 +138,74 @@ func TestCampaignSessionMergeSessionOverridesStableInputs(t *testing.T) {
 	assertResolvedStableInput(t, cfg.StableInputs.PartyFile, "./session-party.yml", sessionPath, "session_config")
 }
 
+func TestCampaignSessionMergeSpellCatalog(t *testing.T) {
+	tests := []struct {
+		name          string
+		campaignValue string
+		sessionValue  string
+		wantPath      string
+		wantSource    string
+	}{
+		{name: "omitted", wantPath: "", wantSource: "campaign_config"},
+		{name: "campaign inherited", campaignValue: "./campaign-spells.json", wantPath: "./campaign-spells.json", wantSource: "campaign_config"},
+		{name: "session override", campaignValue: "./campaign-spells.json", sessionValue: "./session-spells.json", wantPath: "./session-spells.json", wantSource: "session_config"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			campaignSpell := ""
+			if tt.campaignValue != "" {
+				campaignSpell = "  spell_catalog_file: " + tt.campaignValue + "\n"
+			}
+			sessionSpell := ""
+			if tt.sessionValue != "" {
+				sessionSpell = "  spell_catalog_file: " + tt.sessionValue + "\n"
+			}
+			pipelinePath, campaignPath, sessionPath := writeCampaignConfigTestFiles(t,
+				"campaign_id: sample-campaign\ninputs:\n  speakers_file: ./speakers.yml\n  autocorrect_file: ./autocorrect.yml\n  glossary_file: ./glossary.yml\n  players_file: ./players.yml\n  party_file: ./party.yml\n"+campaignSpell,
+				"session_id: 2026-05-03\ninputs:\n  audio_dir: ./audio\n"+sessionSpell,
+			)
+
+			cfg, err := LoadWithSessionOptions(pipelinePath, campaignPath, sessionPath, SessionLoadOptions{})
+			if err != nil {
+				t.Fatalf("LoadWithSessionOptions() error = %v", err)
+			}
+			wantConfigPath := campaignPath
+			if tt.wantSource == "session_config" {
+				wantConfigPath = sessionPath
+			}
+			assertResolvedStableInput(t, cfg.StableInputs.SpellCatalogFile, tt.wantPath, wantConfigPath, tt.wantSource)
+			if cfg.Session.Inputs.SpellCatalogFile != tt.wantPath {
+				t.Fatalf("session spell_catalog_file = %q, want %q", cfg.Session.Inputs.SpellCatalogFile, tt.wantPath)
+			}
+		})
+	}
+}
+
+func TestCampaignSessionMergeRejectsWhitespaceSpellCatalog(t *testing.T) {
+	tests := []struct {
+		name         string
+		campaignLine string
+		sessionLine  string
+		wantErr      string
+	}{
+		{name: "campaign", campaignLine: "  spell_catalog_file: '   '\n", wantErr: "campaign.inputs.spell_catalog_file"},
+		{name: "session", sessionLine: "  spell_catalog_file: '   '\n", wantErr: "session.inputs.spell_catalog_file"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			pipelinePath, campaignPath, sessionPath := writeCampaignConfigTestFiles(t,
+				"campaign_id: sample-campaign\ninputs:\n  speakers_file: ./speakers.yml\n  autocorrect_file: ./autocorrect.yml\n  glossary_file: ./glossary.yml\n  players_file: ./players.yml\n  party_file: ./party.yml\n"+tt.campaignLine,
+				"session_id: 2026-05-03\ninputs:\n  audio_dir: ./audio\n"+tt.sessionLine,
+			)
+			_, err := LoadWithSessionOptions(pipelinePath, campaignPath, sessionPath, SessionLoadOptions{})
+			if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
+				t.Fatalf("LoadWithSessionOptions() error = %v, want containing %q", err, tt.wantErr)
+			}
+		})
+	}
+}
+
 func TestCampaignRequiresPlayersAndPartyInputs(t *testing.T) {
 	pipelinePath, campaignPath, sessionPath := writeCampaignConfigTestFiles(t,
 		"campaign_id: sample-campaign\ninputs:\n  speakers_file: ./speakers.yml\n  autocorrect_file: ./autocorrect.yml\n  glossary_file: ./glossary.yml\n",
diff --git a/internal/config/config.go b/internal/config/config.go
index 94febfe..3e3b4ca 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -49,11 +49,12 @@ type CampaignConfig struct {
 
 // CampaignInputsConfig contains stable campaign-level input file references.
 type CampaignInputsConfig struct {
-	SpeakersFile    string `yaml:"speakers_file"`
-	AutocorrectFile string `yaml:"autocorrect_file"`
-	GlossaryFile    string `yaml:"glossary_file"`
-	PlayersFile     string `yaml:"players_file"`
-	PartyFile       string `yaml:"party_file"`
+	SpeakersFile     string `yaml:"speakers_file"`
+	AutocorrectFile  string `yaml:"autocorrect_file"`
+	GlossaryFile     string `yaml:"glossary_file"`
+	PlayersFile      string `yaml:"players_file"`
+	PartyFile        string `yaml:"party_file"`
+	SpellCatalogFile string `yaml:"spell_catalog_file"`
 }
 
 // SessionConfig contains per-session inputs and metadata.
@@ -266,6 +267,7 @@ type NotariusConfig struct {
 	PipelineID       string                          `yaml:"pipeline_id"`
 	Timeout          string                          `yaml:"timeout"`
 	WorkingDirectory string                          `yaml:"working_directory"`
+	References       map[string]string               `yaml:"references"`
 	Outputs          map[string]NotariusOutputConfig `yaml:"outputs"`
 }
 
@@ -285,14 +287,15 @@ type NotificationConfig struct {
 
 // SessionInputsConfig contains per-session input references.
 type SessionInputsConfig struct {
-	AudioDir        string               `yaml:"audio_dir"`
-	AudioFiles      []string             `yaml:"audio_files"`
-	AudioS3         *SessionAudioS3Input `yaml:"audio_s3"`
-	SpeakersFile    string               `yaml:"speakers_file"`
-	AutocorrectFile string               `yaml:"autocorrect_file"`
-	GlossaryFile    string               `yaml:"glossary_file"`
-	PlayersFile     string               `yaml:"players_file"`
-	PartyFile       string               `yaml:"party_file"`
+	AudioDir         string               `yaml:"audio_dir"`
+	AudioFiles       []string             `yaml:"audio_files"`
+	AudioS3          *SessionAudioS3Input `yaml:"audio_s3"`
+	SpeakersFile     string               `yaml:"speakers_file"`
+	AutocorrectFile  string               `yaml:"autocorrect_file"`
+	GlossaryFile     string               `yaml:"glossary_file"`
+	PlayersFile      string               `yaml:"players_file"`
+	PartyFile        string               `yaml:"party_file"`
+	SpellCatalogFile string               `yaml:"spell_catalog_file"`
 }
 
 // SessionAudioS3Input configures S3 session-audio input discovery.
@@ -303,11 +306,12 @@ type SessionAudioS3Input struct {
 // ResolvedStableInputs records where stable input file paths came from after
 // campaign/session merge.
 type ResolvedStableInputs struct {
-	SpeakersFile    ResolvedInputFile
-	AutocorrectFile ResolvedInputFile
-	GlossaryFile    ResolvedInputFile
-	PlayersFile     ResolvedInputFile
-	PartyFile       ResolvedInputFile
+	SpeakersFile     ResolvedInputFile
+	AutocorrectFile  ResolvedInputFile
+	GlossaryFile     ResolvedInputFile
+	PlayersFile      ResolvedInputFile
+	PartyFile        ResolvedInputFile
+	SpellCatalogFile ResolvedInputFile
 }
 
 // ResolvedInputFile records one merged config path and its source config file.
diff --git a/internal/config/defaults.go b/internal/config/defaults.go
index 1dfea5b..2d98e38 100644
--- a/internal/config/defaults.go
+++ b/internal/config/defaults.go
@@ -35,6 +35,9 @@ const (
 	DefaultAuditaReport    = true
 	DefaultNotariusBinary  = "notarius"
 	DefaultNotariusTimeout = "3h"
+	// MaxNotariusReferenceBindings is the maximum number of CLI reference
+	// bindings accepted for one Notarius invocation.
+	MaxNotariusReferenceBindings = 256
 
 	DefaultScriptoriumBinary                 = "scriptorium"
 	DefaultScriptoriumTimeout                = "10m"
diff --git a/internal/config/load.go b/internal/config/load.go
index 2f179b8..8402b63 100644
--- a/internal/config/load.go
+++ b/internal/config/load.go
@@ -209,6 +209,12 @@ func mergeCampaignSession(campaignCfg *CampaignConfig, sessionCfg *SessionConfig
 	if sessionCfg == nil {
 		return ResolvedStableInputs{}, fmt.Errorf("session config is required")
 	}
+	if campaignCfg.Inputs.SpellCatalogFile != "" && strings.TrimSpace(campaignCfg.Inputs.SpellCatalogFile) == "" {
+		return ResolvedStableInputs{}, fmt.Errorf("campaign.inputs.spell_catalog_file must be non-empty when provided")
+	}
+	if sessionCfg.Inputs.SpellCatalogFile != "" && strings.TrimSpace(sessionCfg.Inputs.SpellCatalogFile) == "" {
+		return ResolvedStableInputs{}, fmt.Errorf("session.inputs.spell_catalog_file must be non-empty when provided")
+	}
 
 	campaignName := CampaignID(campaignCfg)
 	sessionCampaign := strings.TrimSpace(sessionCfg.Campaign)
@@ -254,6 +260,12 @@ func mergeCampaignSession(campaignCfg *CampaignConfig, sessionCfg *SessionConfig
 			campaignPath,
 			sessionPath,
 		),
+		SpellCatalogFile: selectStableInput(
+			campaignCfg.Inputs.SpellCatalogFile,
+			sessionCfg.Inputs.SpellCatalogFile,
+			campaignPath,
+			sessionPath,
+		),
 	}
 
 	sessionCfg.Inputs.SpeakersFile = stable.SpeakersFile.Path
@@ -261,6 +273,7 @@ func mergeCampaignSession(campaignCfg *CampaignConfig, sessionCfg *SessionConfig
 	sessionCfg.Inputs.GlossaryFile = stable.GlossaryFile.Path
 	sessionCfg.Inputs.PlayersFile = stable.PlayersFile.Path
 	sessionCfg.Inputs.PartyFile = stable.PartyFile.Path
+	sessionCfg.Inputs.SpellCatalogFile = stable.SpellCatalogFile.Path
 	return stable, nil
 }
 
diff --git a/internal/config/notarius_test.go b/internal/config/notarius_test.go
index 16ab104..e57bdc3 100644
--- a/internal/config/notarius_test.go
+++ b/internal/config/notarius_test.go
@@ -1,6 +1,7 @@
 package config
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 	"strings"
@@ -108,6 +109,7 @@ func TestNotariusStrictYAML(t *testing.T) {
 		{name: "unknown output field", yaml: "notarius:\n  outputs:\n    npc_registry:\n      lane_id: npc-registry\n      unknown: true\n"},
 		{name: "unsupported session id", yaml: "notarius:\n  session_id: forbidden\n"},
 		{name: "unsupported model", yaml: "notarius:\n  model: forbidden\n"},
+		{name: "duplicate reference selector", yaml: "notarius:\n  references:\n    party: narratio.input.party\n    party: narratio.input.players\n"},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -122,6 +124,134 @@ func TestNotariusStrictYAML(t *testing.T) {
 	}
 }
 
+func TestNotariusReferenceValidationAndNormalization(t *testing.T) {
+	cfg := validNotariusConfig()
+	cfg.References = map[string]string{
+		" party ":                             " narratio.input.party ",
+		" chunk . players ":                   "narratio.input.players",
+		" npc-registry . extract . glossary ": "narratio.input.glossary",
+		"spells":                              "narratio.input.spell_catalog",
+	}
+
+	if err := validateNotarius(cfg, nil); err != nil {
+		t.Fatalf("validateNotarius() error = %v", err)
+	}
+	want := map[string]string{
+		"party":                         "narratio.input.party",
+		"chunk.players":                 "narratio.input.players",
+		"npc-registry.extract.glossary": "narratio.input.glossary",
+		"spells":                        "narratio.input.spell_catalog",
+	}
+	if len(cfg.References) != len(want) {
+		t.Fatalf("normalized references = %#v, want %#v", cfg.References, want)
+	}
+	for selector, source := range want {
+		if cfg.References[selector] != source {
+			t.Fatalf("references[%q] = %q, want %q", selector, cfg.References[selector], source)
+		}
+	}
+}
+
+func TestNotariusReferenceValidationRejectsInvalidBindings(t *testing.T) {
+	tests := []struct {
+		name       string
+		references map[string]string
+		wantErr    string
+	}{
+		{name: "empty selector", references: map[string]string{" ": "narratio.input.party"}, wantErr: "selector is required"},
+		{name: "equals in selector", references: map[string]string{"party=x": "narratio.input.party"}, wantErr: "must not contain"},
+		{name: "invalid stage", references: map[string]string{"lane.prepare.party": "narratio.input.party"}, wantErr: "middle component"},
+		{name: "empty source", references: map[string]string{"party": "  "}, wantErr: "source is required"},
+		{name: "unsupported source", references: map[string]string{"party": "narratio.input.unknown"}, wantErr: "not a supported prepared input source"},
+		{
+			name: "normalized collision",
+			references: map[string]string{
+				"chunk.party":     "narratio.input.party",
+				" chunk . party ": "narratio.input.players",
+			},
+			wantErr: "normalize to",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := validNotariusConfig()
+			cfg.References = tt.references
+			err := validateNotarius(cfg, nil)
+			if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
+				t.Fatalf("validateNotarius() error = %v, want containing %q", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestNotariusReferenceLimit(t *testing.T) {
+	for _, count := range []int{MaxNotariusReferenceBindings, MaxNotariusReferenceBindings + 1} {
+		t.Run(fmt.Sprintf("count_%d", count), func(t *testing.T) {
+			cfg := validNotariusConfig()
+			cfg.References = make(map[string]string, count)
+			for i := 0; i < count; i++ {
+				cfg.References[fmt.Sprintf("lane-%03d.party", i)] = "narratio.input.party"
+			}
+			err := validateNotarius(cfg, nil)
+			if count == MaxNotariusReferenceBindings {
+				if err != nil {
+					t.Fatalf("validateNotarius() at limit error = %v", err)
+				}
+				return
+			}
+			if err == nil || !strings.Contains(err.Error(), "at most 256 bindings") {
+				t.Fatalf("validateNotarius() above limit error = %v", err)
+			}
+		})
+	}
+}
+
+func TestNotariusNilAndEmptyReferencesAreValid(t *testing.T) {
+	for _, references := range []map[string]string{nil, {}} {
+		cfg := validNotariusConfig()
+		cfg.References = references
+		if err := validateNotarius(cfg, nil); err != nil {
+			t.Fatalf("validateNotarius(%#v) error = %v", references, err)
+		}
+	}
+}
+
+func TestNotariusSpellCatalogReferenceRequiresEffectiveInput(t *testing.T) {
+	cfg := loadedValidConfig(t)
+	cfg.Pipeline.Notarius = validNotariusConfig()
+	cfg.Pipeline.Notarius.References = map[string]string{"spells": "narratio.input.spell_catalog"}
+
+	err := Validate(cfg)
+	if err == nil || !strings.Contains(err.Error(), "requires campaign.inputs.spell_catalog_file or session.inputs.spell_catalog_file") {
+		t.Fatalf("Validate() error = %v, want missing spell catalog input", err)
+	}
+
+	cfg.StableInputs.SpellCatalogFile = ResolvedInputFile{Path: "./spells.json", Source: "campaign_config"}
+	if err := Validate(cfg); err != nil {
+		t.Fatalf("Validate() with spell catalog error = %v", err)
+	}
+}
+
+func validNotariusConfig() *NotariusConfig {
+	return &NotariusConfig{
+		Enabled:          true,
+		Binary:           "notarius",
+		ConfigPath:       "./notarius.yml",
+		PipelineID:       "dnd-session",
+		Timeout:          "45m",
+		WorkingDirectory: ".",
+		Outputs: map[string]NotariusOutputConfig{
+			"npc_registry": {
+				LaneID:        "npc-registry",
+				MediaType:     "application/json",
+				SchemaID:      "notarius.dnd.npc_registry",
+				SchemaVersion: "v1",
+			},
+		},
+	}
+}
+
 func TestNotariusEnabledValidation(t *testing.T) {
 	valid := `notarius:
   enabled: true
diff --git a/internal/config/validate.go b/internal/config/validate.go
index a5781f7..fae1e48 100644
--- a/internal/config/validate.go
+++ b/internal/config/validate.go
@@ -12,6 +12,7 @@ import (
 
 	"gitea.maximumdirect.net/eric/narratio/internal/artifactmodel"
 	"gitea.maximumdirect.net/eric/narratio/internal/artifactpolicy"
+	"gitea.maximumdirect.net/eric/narratio/internal/notariusref"
 	"gitea.maximumdirect.net/eric/narratio/internal/pathsafe"
 )
 
@@ -39,7 +40,7 @@ func Validate(cfg *Config) error {
 	if err := validateSession(cfg.Session); err != nil {
 		return fmt.Errorf("session config %q invalid: %w", shortName(cfg.SessionPath, "session.yml"), err)
 	}
-	if err := validateCrossConfig(cfg.Pipeline, cfg.Session); err != nil {
+	if err := validateCrossConfig(cfg.Pipeline, cfg.Session, cfg.StableInputs); err != nil {
 		return fmt.Errorf("pipeline/session config invalid: %w", err)
 	}
 
@@ -71,6 +72,9 @@ func validateCampaign(cfg *CampaignConfig) error {
 	if strings.TrimSpace(cfg.Inputs.PartyFile) == "" {
 		return fmt.Errorf("campaign.inputs.party_file is required")
 	}
+	if cfg.Inputs.SpellCatalogFile != "" && strings.TrimSpace(cfg.Inputs.SpellCatalogFile) == "" {
+		return fmt.Errorf("campaign.inputs.spell_catalog_file must be non-empty when provided")
+	}
 	return nil
 }
 
@@ -547,6 +551,39 @@ func validateNotarius(cfg *NotariusConfig, scriptorium *ScriptoriumConfig) error
 	if strings.TrimSpace(cfg.WorkingDirectory) == "" {
 		return fmt.Errorf("pipeline.notarius.working_directory is required when pipeline.notarius.enabled is true")
 	}
+	if len(cfg.References) > MaxNotariusReferenceBindings {
+		return fmt.Errorf("pipeline.notarius.references must contain at most %d bindings", MaxNotariusReferenceBindings)
+	}
+
+	referenceKeys := make([]string, 0, len(cfg.References))
+	for selector := range cfg.References {
+		referenceKeys = append(referenceKeys, selector)
+	}
+	sort.Strings(referenceKeys)
+	var normalizedReferences map[string]string
+	if cfg.References != nil {
+		normalizedReferences = make(map[string]string, len(cfg.References))
+	}
+	referenceOwners := make(map[string]string, len(cfg.References))
+	for _, rawSelector := range referenceKeys {
+		selector, err := notariusref.NormalizeSelector(rawSelector)
+		if err != nil {
+			return fmt.Errorf("pipeline.notarius.references selector %q is invalid: %w", rawSelector, err)
+		}
+		if previous, ok := referenceOwners[selector]; ok {
+			return fmt.Errorf("pipeline.notarius.references selectors %q and %q normalize to %q", previous, rawSelector, selector)
+		}
+		referenceOwners[selector] = rawSelector
+
+		source := strings.TrimSpace(cfg.References[rawSelector])
+		if source == "" {
+			return fmt.Errorf("pipeline.notarius.references.%s source is required", selector)
+		}
+		if _, ok := artifactpolicy.DescribePreparedInputSource(source); !ok {
+			return fmt.Errorf("pipeline.notarius.references.%s source %q is not a supported prepared input source", selector, source)
+		}
+		normalizedReferences[selector] = source
+	}
 
 	reservedSources := map[string]string{}
 	for _, spec := range artifactmodel.RuntimeTranscriptArtifacts() {
@@ -613,6 +650,7 @@ func validateNotarius(cfg *NotariusConfig, scriptorium *ScriptoriumConfig) error
 	cfg.PipelineID = strings.TrimSpace(cfg.PipelineID)
 	cfg.Timeout = strings.TrimSpace(cfg.Timeout)
 	cfg.WorkingDirectory = filepath.Clean(cfg.WorkingDirectory)
+	cfg.References = normalizedReferences
 	cfg.Outputs = normalizedOutputs
 	return nil
 }
@@ -762,6 +800,9 @@ func validateSession(cfg *SessionConfig) error {
 	if strings.TrimSpace(cfg.Inputs.PartyFile) == "" {
 		return fmt.Errorf("session.inputs.party_file is required")
 	}
+	if cfg.Inputs.SpellCatalogFile != "" && strings.TrimSpace(cfg.Inputs.SpellCatalogFile) == "" {
+		return fmt.Errorf("session.inputs.spell_catalog_file must be non-empty when provided")
+	}
 
 	hasAudioDir := strings.TrimSpace(cfg.Inputs.AudioDir) != ""
 	hasAudioFiles := len(cfg.Inputs.AudioFiles) > 0
@@ -797,10 +838,17 @@ func validateSessionIdentifier(fieldName, value string, required bool) error {
 	return nil
 }
 
-func validateCrossConfig(pipeline *PipelineConfig, session *SessionConfig) error {
+func validateCrossConfig(pipeline *PipelineConfig, session *SessionConfig, stableInputs ResolvedStableInputs) error {
 	if pipeline == nil || session == nil {
 		return nil
 	}
+	if pipeline.Notarius != nil && pipeline.Notarius.Enabled {
+		for selector, source := range pipeline.Notarius.References {
+			if source == artifactpolicy.SourceInputSpellCatalog && strings.TrimSpace(stableInputs.SpellCatalogFile.Path) == "" {
+				return fmt.Errorf("pipeline.notarius.references.%s requires campaign.inputs.spell_catalog_file or session.inputs.spell_catalog_file", selector)
+			}
+		}
+	}
 
 	audioS3Enabled := session.Inputs.AudioS3 != nil
 	publishUploadEnabled := publishUploadConfiguredForS3(pipeline)
diff --git a/internal/notariusref/selector.go b/internal/notariusref/selector.go
new file mode 100644
index 0000000..56caf0c
--- /dev/null
+++ b/internal/notariusref/selector.go
@@ -0,0 +1,43 @@
+// Package notariusref owns Narratio's Notarius CLI reference-selector
+// vocabulary without depending on Notarius implementation packages.
+package notariusref
+
+import (
+	"fmt"
+	"strings"
+)
+
+// NormalizeSelector validates and normalizes a Notarius v0.6 reference
+// selector. It intentionally validates selector structure only; Notarius owns
+// target, slot, and media compatibility.
+func NormalizeSelector(value string) (string, error) {
+	selector := strings.TrimSpace(value)
+	if selector == "" {
+		return "", fmt.Errorf("reference selector is required")
+	}
+	if strings.Contains(selector, "=") {
+		return "", fmt.Errorf("reference selector must not contain '='")
+	}
+
+	parts := strings.Split(selector, ".")
+	for index := range parts {
+		parts[index] = strings.TrimSpace(parts[index])
+		if parts[index] == "" {
+			return "", fmt.Errorf("reference selector components must not be empty")
+		}
+	}
+
+	switch len(parts) {
+	case 1, 2:
+		return strings.Join(parts, "."), nil
+	case 3:
+		switch parts[1] {
+		case "extract", "merge", "normalize":
+			return strings.Join(parts, "."), nil
+		default:
+			return "", fmt.Errorf("three-component reference selector must use extract, merge, or normalize as its middle component")
+		}
+	default:
+		return "", fmt.Errorf("reference selector must use slot, chunk.slot, lane.slot, or lane.stage.slot")
+	}
+}
diff --git a/internal/notariusref/selector_test.go b/internal/notariusref/selector_test.go
new file mode 100644
index 0000000..de2009a
--- /dev/null
+++ b/internal/notariusref/selector_test.go
@@ -0,0 +1,58 @@
+package notariusref
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestNormalizeSelectorAcceptsDocumentedForms(t *testing.T) {
+	tests := []struct {
+		name  string
+		value string
+		want  string
+	}{
+		{name: "pipeline", value: "party", want: "party"},
+		{name: "chunk", value: "chunk.party", want: "chunk.party"},
+		{name: "lane", value: "npc-registry.party", want: "npc-registry.party"},
+		{name: "extract", value: "npc-registry.extract.party", want: "npc-registry.extract.party"},
+		{name: "merge", value: "npc-registry.merge.party", want: "npc-registry.merge.party"},
+		{name: "normalize", value: "npc-registry.normalize.party", want: "npc-registry.normalize.party"},
+		{name: "whitespace", value: "  npc-registry . extract . party  ", want: "npc-registry.extract.party"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			got, err := NormalizeSelector(test.value)
+			if err != nil {
+				t.Fatalf("NormalizeSelector(%q) error = %v", test.value, err)
+			}
+			if got != test.want {
+				t.Fatalf("NormalizeSelector(%q) = %q, want %q", test.value, got, test.want)
+			}
+		})
+	}
+}
+
+func TestNormalizeSelectorRejectsInvalidForms(t *testing.T) {
+	tests := []struct {
+		name    string
+		value   string
+		wantErr string
+	}{
+		{name: "empty", value: "", wantErr: "required"},
+		{name: "whitespace", value: "   ", wantErr: "required"},
+		{name: "empty first", value: ".party", wantErr: "components"},
+		{name: "empty middle", value: "lane..party", wantErr: "components"},
+		{name: "empty final", value: "lane.", wantErr: "components"},
+		{name: "equals", value: "party=/tmp/party.yml", wantErr: "must not contain"},
+		{name: "invalid stage", value: "lane.chunk.party", wantErr: "extract, merge, or normalize"},
+		{name: "too many components", value: "lane.extract.party.extra", wantErr: "must use"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			_, err := NormalizeSelector(test.value)
+			if err == nil || !strings.Contains(err.Error(), test.wantErr) {
+				t.Fatalf("NormalizeSelector(%q) error = %v, want containing %q", test.value, err, test.wantErr)
+			}
+		})
+	}
+}
diff --git a/internal/stage/analyze.go b/internal/stage/analyze.go
index 275bf80..a91b507 100644
--- a/internal/stage/analyze.go
+++ b/internal/stage/analyze.go
@@ -728,16 +728,8 @@ func resolvePreparedStableInput(sourceID string, paths artifacts.SessionPaths) (
 }
 
 func preparedStableInputFilename(sourceID string) (string, bool) {
-	switch strings.TrimSpace(sourceID) {
-	case artifactpolicy.SourceInputPlayers:
-		return "players.yml", true
-	case artifactpolicy.SourceInputParty:
-		return "party.yml", true
-	case artifactpolicy.SourceInputGlossary:
-		return "glossary.yml", true
-	default:
-		return "", false
-	}
+	descriptor, ok := artifactpolicy.DescribePreparedInputSource(sourceID)
+	return descriptor.Filename, ok
 }
 
 func buildAnalyzeRuntimeArtifactCatalog(