diff --git a/database/database.go b/database/database.go
index d058095..569820e 100644
--- a/database/database.go
+++ b/database/database.go
@@ -9,6 +9,7 @@ import (
 var ErrDriverNotSupported = errors.New("driver not found or supported")
 
 type Database interface {
+	Activities() repositories.ActivityRepository
 	Issues() repositories.IssueRepository
 	Items() repositories.ItemRepository
 	Projects() repositories.ProjectRepository
diff --git a/database/drivers/mysqldriver/activities.go b/database/drivers/mysqldriver/activities.go
new file mode 100644
index 0000000..92bf395
--- /dev/null
+++ b/database/drivers/mysqldriver/activities.go
@@ -0,0 +1,100 @@
+package mysqldriver
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"git.aiterp.net/stufflog/server/internal/generate"
+	"git.aiterp.net/stufflog/server/internal/xlerrors"
+	"git.aiterp.net/stufflog/server/models"
+	sq "github.com/Masterminds/squirrel"
+	"github.com/jmoiron/sqlx"
+)
+
+type activityRepository struct {
+	db *sqlx.DB
+}
+
+func (r *activityRepository) Find(ctx context.Context, id string) (*models.Activity, error) {
+	activity := models.Activity{}
+	err := r.db.GetContext(ctx, &activity, "SELECT * FROM activity WHERE activity_id=?", id)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			return nil, xlerrors.NotFound("Activity")
+		}
+
+		return nil, err
+	}
+
+	return &activity, nil
+}
+
+func (r *activityRepository) List(ctx context.Context, filter models.ActivityFilter) ([]*models.Activity, error) {
+	q := sq.Select("*").From("activity")
+	if len(filter.ActivityIDs) > 0 {
+		q = q.Where(sq.Eq{"activity_id": filter.ActivityIDs})
+	}
+	if len(filter.ProjectIDs) > 0 {
+		q = q.Where(sq.Eq{"project_id": filter.ProjectIDs})
+	}
+
+	query, args, err := q.ToSql()
+	if err != nil {
+		return nil, err
+	}
+
+	results := make([]*models.Activity, 0, 16)
+	err = r.db.SelectContext(ctx, &results, query, args...)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			return []*models.Activity{}, nil
+		}
+
+		return nil, err
+	}
+
+	return results, nil
+}
+
+func (r *activityRepository) Insert(ctx context.Context, activity models.Activity) (*models.Activity, error) {
+	if activity.ProjectID == "" {
+		return nil, errors.New("missing project id")
+	}
+
+	activity.ID = generate.ActivityID()
+
+	_, err := r.db.NamedExecContext(ctx, `
+		INSERT INTO activity (
+			activity_id, project_id, name, countable, 
+		    unit_is_time, unit_name, unit_value, base_value
+		) VALUES (
+			:activity_id, :project_id, :name, :countable,
+			:unit_is_time, :unit_name, :unit_value, :base_value
+		)
+	`, activity)
+	if err != nil {
+		return nil, err
+	}
+
+	return &activity, nil
+}
+
+func (r *activityRepository) Save(ctx context.Context, activity models.Activity) error {
+	_, err := r.db.NamedExecContext(ctx, `
+		UPDATE activity SET
+			name=:name,
+			countable=:countable,
+			unit_is_time=:unit_is_time,
+			unit_name=:unit_name,
+			unit_value=:unit_value,
+			base_value=:base_value
+		WHERE activity_id=:activity_id
+	`, activity)
+
+	return err
+}
+
+func (r *activityRepository) Delete(ctx context.Context, activity models.Activity) error {
+	_, err := r.db.ExecContext(ctx, "DELETE FROM activity WHERE activity_id=? LIMIT 1;", activity.ID)
+	return err
+}
diff --git a/database/drivers/mysqldriver/db.go b/database/drivers/mysqldriver/db.go
index f7837bb..5ead79a 100644
--- a/database/drivers/mysqldriver/db.go
+++ b/database/drivers/mysqldriver/db.go
@@ -14,6 +14,7 @@ import (
 
 type DB struct {
 	db              *sqlx.DB
+	activities      *activityRepository
 	issues          *issueRepository
 	items           *itemRepository
 	projects        *projectRepository
@@ -22,6 +23,10 @@ type DB struct {
 	projectStatuses *projectStatusRepository
 }
 
+func (db *DB) Activities() repositories.ActivityRepository {
+	return db.activities
+}
+
 func (db *DB) Issues() repositories.IssueRepository {
 	return db.issues
 }
@@ -76,6 +81,7 @@ func Open(connectionString string) (*DB, error) {
 		return nil, err
 	}
 
+	activities := &activityRepository{db: db}
 	issues := &issueRepository{db: db}
 	items := &itemRepository{db: db}
 	projects := &projectRepository{db: db}
@@ -85,6 +91,7 @@ func Open(connectionString string) (*DB, error) {
 
 	return &DB{
 		db:              db,
+		activities:      activities,
 		issues:          issues,
 		items:           items,
 		projects:        projects,
diff --git a/database/repositories/activityrepository.go b/database/repositories/activityrepository.go
new file mode 100644
index 0000000..2f6c2e6
--- /dev/null
+++ b/database/repositories/activityrepository.go
@@ -0,0 +1,14 @@
+package repositories
+
+import (
+	"context"
+	"git.aiterp.net/stufflog/server/models"
+)
+
+type ActivityRepository interface {
+	Find(ctx context.Context, id string) (*models.Activity, error)
+	List(ctx context.Context, filter models.ActivityFilter) ([]*models.Activity, error)
+	Insert(ctx context.Context, activity models.Activity) (*models.Activity, error)
+	Save(ctx context.Context, activity models.Activity) error
+	Delete(ctx context.Context, activity models.Activity) error
+}
diff --git a/graph/gqlgen.yml b/graph/gqlgen.yml
index 23dd4a3..9d233b0 100644
--- a/graph/gqlgen.yml
+++ b/graph/gqlgen.yml
@@ -9,6 +9,12 @@ model:
   filename: graphcore/input_gen.go
   package: graphcore
 
+models:
+  Activity:
+    fields:
+      unitName:
+        resolver: true
+
 resolver:
   layout: follow-schema
   dir: resolvers
diff --git a/graph/resolvers/activity.resolvers.go b/graph/resolvers/activity.resolvers.go
new file mode 100644
index 0000000..404577f
--- /dev/null
+++ b/graph/resolvers/activity.resolvers.go
@@ -0,0 +1,27 @@
+package resolvers
+
+// This file will be automatically regenerated based on the schema, any resolver implementations
+// will be copied through when generating and any unknown code will be moved to the end.
+
+import (
+	"context"
+	"git.aiterp.net/stufflog/server/graph/graphcore"
+	"git.aiterp.net/stufflog/server/models"
+)
+
+func (r *activityResolver) UnitName(ctx context.Context, obj *models.Activity) (*string, error) {
+	if !obj.Countable || obj.UnitIsTimeSpent {
+		return nil, nil
+	}
+
+	return &obj.UnitName, nil
+}
+
+func (r *activityResolver) Project(ctx context.Context, obj *models.Activity) (*models.Project, error) {
+	return r.Database.Projects().Find(ctx, obj.ProjectID)
+}
+
+// Activity returns graphcore.ActivityResolver implementation.
+func (r *Resolver) Activity() graphcore.ActivityResolver { return &activityResolver{r} }
+
+type activityResolver struct{ *Resolver }
diff --git a/graph/resolvers/issue.resolvers.go b/graph/resolvers/issue.resolvers.go
index 0f313ca..0de9a96 100644
--- a/graph/resolvers/issue.resolvers.go
+++ b/graph/resolvers/issue.resolvers.go
@@ -5,6 +5,7 @@ package resolvers
 
 import (
 	"context"
+
 	"git.aiterp.net/stufflog/server/graph/graphcore"
 	"git.aiterp.net/stufflog/server/graph/graphutil"
 	"git.aiterp.net/stufflog/server/graph/loaders"
diff --git a/graph/resolvers/mutation.resolvers.go b/graph/resolvers/mutation.resolvers.go
index cbfa683..7fa07e9 100644
--- a/graph/resolvers/mutation.resolvers.go
+++ b/graph/resolvers/mutation.resolvers.go
@@ -6,6 +6,7 @@ package resolvers
 import (
 	"context"
 	"errors"
+
 	"git.aiterp.net/stufflog/server/graph/graphcore"
 	"git.aiterp.net/stufflog/server/internal/xlerrors"
 	"git.aiterp.net/stufflog/server/models"
@@ -44,6 +45,83 @@ func (r *mutationResolver) CreateProject(ctx context.Context, input graphcore.Pr
 	return project, nil
 }
 
+func (r *mutationResolver) CreateActivity(ctx context.Context, input graphcore.ActivityCreateInput) (*models.Activity, error) {
+	user := r.Auth.UserFromContext(ctx)
+	if user == nil {
+		return nil, xlerrors.PermissionDenied
+	}
+
+	project, err := r.Database.Projects().Find(ctx, input.ProjectID)
+	if err != nil {
+		return nil, err
+	}
+	if perm, err := r.Auth.ProjectPermission(ctx, *project); err != nil || !perm.CanManageActivities() {
+		return nil, xlerrors.PermissionDenied
+	}
+
+	activity := &models.Activity{
+		ProjectID:       project.ID,
+		Name:            input.Name,
+		Countable:       input.Countable != nil && *input.Countable,
+		UnitIsTimeSpent: input.UnitIsTimeSpent != nil && *input.UnitIsTimeSpent,
+		BaseValue:       input.BaseValue,
+	}
+	if !activity.UnitIsTimeSpent && activity.Countable {
+		if input.UnitName != nil {
+			activity.UnitName = *input.UnitName
+		} else {
+			return nil, errors.New("unit name is required for countable non-time-spent activities")
+		}
+	}
+	if activity.UnitIsTimeSpent || activity.Countable {
+		if input.UnitValue != nil {
+			activity.UnitValue = *input.UnitValue
+		}
+	}
+
+	return r.Database.Activities().Insert(ctx, *activity)
+}
+
+func (r *mutationResolver) EditActivity(ctx context.Context, input graphcore.ActivityEditInput) (*models.Activity, error) {
+	user := r.Auth.UserFromContext(ctx)
+	if user == nil {
+		return nil, xlerrors.PermissionDenied
+	}
+
+	activity, err := r.Database.Activities().Find(ctx, input.ActivityID)
+	if err != nil {
+		return nil, err
+	}
+
+	project, err := r.Database.Projects().Find(ctx, activity.ProjectID)
+	if err != nil {
+		return nil, err
+	}
+	if perm, err := r.Auth.ProjectPermission(ctx, *project); err != nil || !perm.CanManageActivities() {
+		return nil, xlerrors.PermissionDenied
+	}
+
+	if input.SetName != nil {
+		activity.Name = *input.SetName
+	}
+	if input.SetBaseValue != nil {
+		activity.BaseValue = *input.SetBaseValue
+	}
+	if input.SetUnitName != nil {
+		activity.UnitName = *input.SetUnitName
+	}
+	if input.SetUnitValue != nil {
+		activity.UnitValue = *input.SetUnitValue
+	}
+
+	err = r.Database.Activities().Save(ctx, *activity)
+	if err != nil {
+		return nil, err
+	}
+
+	return activity, nil
+}
+
 func (r *mutationResolver) CreateIssue(ctx context.Context, input graphcore.IssueCreateInput) (*models.Issue, error) {
 	user := r.Auth.UserFromContext(ctx)
 	if user == nil {
@@ -58,14 +136,19 @@ func (r *mutationResolver) CreateIssue(ctx context.Context, input graphcore.Issu
 		return nil, xlerrors.PermissionDenied
 	}
 
+	status, err := r.Database.ProjectStatuses().Find(ctx, project.ID, input.StatusName)
+	if err != nil {
+		return nil, err
+	}
+
 	issue := &models.Issue{
 		ProjectID:   project.ID,
 		OwnerID:     user.ID,
 		AssigneeID:  "",
-		StatusStage: input.StatusStage,
-		StatusName:  input.StatusName,
+		StatusStage: status.Stage,
+		StatusName:  status.Name,
 		Name:        input.Name,
-		Title:       input.Name,
+		Title:       input.Name, // Title set below if it's in the input.
 		Description: input.Description,
 	}
 	if input.Title != nil && *input.Title != "" {
diff --git a/graph/resolvers/project.resolvers.go b/graph/resolvers/project.resolvers.go
index b39eaf3..32f2a10 100644
--- a/graph/resolvers/project.resolvers.go
+++ b/graph/resolvers/project.resolvers.go
@@ -48,6 +48,10 @@ func (r *projectResolver) Statuses(ctx context.Context, obj *models.Project, fil
 	return r.Database.ProjectStatuses().List(ctx, *filter)
 }
 
+func (r *projectResolver) Activities(ctx context.Context, obj *models.Project) ([]*models.Activity, error) {
+	return r.Database.Activities().List(ctx, models.ActivityFilter{ProjectIDs: []string{obj.ID}})
+}
+
 func (r *projectPermissionResolver) User(ctx context.Context, obj *models.ProjectPermission) (*models.User, error) {
 	return loaders.UserLoaderFromContext(ctx).Load(obj.UserID)
 }
diff --git a/graph/resolvers/query.resolvers.go b/graph/resolvers/query.resolvers.go
index 087fe59..c50a658 100644
--- a/graph/resolvers/query.resolvers.go
+++ b/graph/resolvers/query.resolvers.go
@@ -8,14 +8,14 @@ import (
 	"errors"
 
 	"git.aiterp.net/stufflog/server/graph/graphcore"
+	"git.aiterp.net/stufflog/server/internal/xlerrors"
 	"git.aiterp.net/stufflog/server/models"
-	"git.aiterp.net/stufflog/server/services"
 )
 
 func (r *queryResolver) Issue(ctx context.Context, id string) (*models.Issue, error) {
 	user := r.Auth.UserFromContext(ctx)
 	if user == nil {
-		return nil, services.ErrPermissionDenied
+		return nil, xlerrors.PermissionDenied
 	}
 
 	issue, err := r.Database.Issues().Find(ctx, id)
@@ -33,7 +33,7 @@ func (r *queryResolver) Issue(ctx context.Context, id string) (*models.Issue, er
 func (r *queryResolver) Issues(ctx context.Context, filter *models.IssueFilter) ([]*models.Issue, error) {
 	user := r.Auth.UserFromContext(ctx)
 	if user == nil {
-		return nil, services.ErrPermissionDenied
+		return nil, xlerrors.PermissionDenied
 	}
 
 	if filter == nil {
@@ -61,7 +61,7 @@ func (r *queryResolver) Issues(ctx context.Context, filter *models.IssueFilter)
 func (r *queryResolver) Project(ctx context.Context, id string) (*models.Project, error) {
 	user := r.Auth.UserFromContext(ctx)
 	if user == nil {
-		return nil, services.ErrPermissionDenied
+		return nil, xlerrors.PermissionDenied
 	}
 
 	project, err := r.Database.Projects().Find(ctx, id)
@@ -79,7 +79,7 @@ func (r *queryResolver) Project(ctx context.Context, id string) (*models.Project
 func (r *queryResolver) Projects(ctx context.Context, filter *models.ProjectFilter) ([]*models.Project, error) {
 	user := r.Auth.UserFromContext(ctx)
 	if user == nil {
-		return nil, services.ErrPermissionDenied
+		return nil, xlerrors.PermissionDenied
 	}
 
 	skipCheck := false
diff --git a/graph/schema/activity.gql b/graph/schema/activity.gql
new file mode 100644
index 0000000..e8e29cb
--- /dev/null
+++ b/graph/schema/activity.gql
@@ -0,0 +1,60 @@
+"""
+An activity is a measurable activity for a project. It can be measured.
+"""
+type Activity {
+    "The activity ID."
+    id: String!
+    "The activity name."
+    name: String!
+    "Whether the activity is countable."
+    countable: Boolean!
+    "Whether the time spent is the unit."
+    unitIsTimeSpent: Boolean!
+    "The name of the unit. If unitIsTime or countable is true, this value should be ignored."
+    unitName: String
+    "The value per unit."
+    unitValue: Float!
+    "The base score value for any performed activity. For uncountables, this is the only points scored."
+    baseValue: Float!
+
+    "Parent project."
+    project: Project!
+}
+
+"""
+Input for the createActivity mutation.
+"""
+input ActivityCreateInput {
+    "Project ID to associate it with."
+    projectId: String!
+    "Proejct name."
+    name: String!
+    "The base value of any activity performed. If uncountable, this should be non-zero."
+    baseValue: Float!
+    "Whether the activity is countable. Default: false"
+    countable: Boolean
+    "Whether time spent should be the unit of this activity."
+    unitIsTimeSpent: Boolean
+    "The unit name of the activity."
+    unitName: String
+    "The per-unit value of the activity."
+    unitValue: Float
+}
+
+"""
+Input for the editActivity mutation. Not all changes are available as they could create
+some serious issues with past goals and logs.
+"""
+input ActivityEditInput {
+    "The ID of the activity to edit."
+    activityId: String!
+
+    "Update the name of the activity."
+    setName: String
+    "Set the base value of the activity. This has an effect on current and past goals!"
+    setBaseValue: Float
+    "Set the unit name of the activity. This is only for countable, non time spent acitivities."
+    setUnitName: String
+    "Set the unit value of the activity. This has an effect on current and past goals!"
+    setUnitValue: Float
+}
\ No newline at end of file
diff --git a/graph/schema/issue.gql b/graph/schema/issue.gql
index c67c196..7858baa 100644
--- a/graph/schema/issue.gql
+++ b/graph/schema/issue.gql
@@ -1,51 +1,60 @@
 type Issue {
+    "The issue ID."
     id: String!
+    "The time at which the issue is created."
     createdTime: Time!
+    "The time at which the issue was updated."
     updatedTime: Time!
+    "Optionally, when this issue is due."
     dueTime: Time
+    "The name of the issue, used in lists."
     name: String!
+    "The issue title. This can be longer than the name."
     title: String!
+    "The description of the issue, in markdown."
     description: String!
 
+    "Parent project."
     project: Project
+    "The issue's owner/creator."
     owner: User
+    "The issue assignee."
     assignee: User
+    "The issue status."
     status: ProjectStatus!
 }
 
 input IssueFilter {
-    "Filter by issue IDs (mostly used internally by data loaders)"
+    "Filter by issue IDs. (mostly used internally by data loaders)"
     issueIds: [String!]
-    "Filter by project IDs"
+    "Filter by project IDs."
     projectIds: [String!]
-    "Filter by owner IDs"
+    "Filter by owner IDs."
     ownerIds: [String!]
-    "Filter by assignee IDs"
+    "Filter by assignee IDs."
     assigneeIds: [String!]
-    "Text search"
+    "Text search."
     search: String
-    "Earliest stage (inclusive)"
+    "Earliest stage. (inclusive)"
     minStage: Int
-    "Latest stage (inclusive)"
+    "Latest stage. (inclusive)"
     maxStage: Int
-    "Limit the result set"
+    "Limit the result set."
     limit: Int
 }
 
 input IssueCreateInput {
-    "Project ID"
+    "Project ID."
     projectId: String!
-    "Status stage"
-    statusStage: Int!
-    "Status name"
+    "Status name."
     statusName: String!
     "A name for the issue."
     name: String!
     "Description of the issue."
     description: String!
-    "Assign this issue, will default to unassigned"
+    "Assign this issue, will default to unassigned."
     assigneeId: String
-    "A date when this issue is due"
+    "A date when this issue is due."
     dueTime: Time
     "Optional title to use instead of the name when not in a list."
     title: String
diff --git a/graph/schema/mutation.gql b/graph/schema/mutation.gql
index b8b2f5e..e471078 100644
--- a/graph/schema/mutation.gql
+++ b/graph/schema/mutation.gql
@@ -1,19 +1,25 @@
 type Mutation {
     # PROJECT
-    "Create a new project"
+    "Create a new project."
     createProject(input: ProjectCreateInput!): Project!
 
+    # ACTIVITY
+    "Create an activity."
+    createActivity(input: ActivityCreateInput!): Activity!
+    "Edit an activity."
+    editActivity(input: ActivityEditInput!): Activity!
+
     # ISSUE
-    "Create a new issue"
+    "Create a new issue."
     createIssue(input: IssueCreateInput!): Issue!
 
     # USER
-    "Log in"
+    "Log in."
     loginUser(input: UserLoginInput!): User!
-    "Log out"
+    "Log out."
     logoutUser: User!
     "Create a new user. This can only be done by administrators."
     createUser(input: UserCreateInput!): User!
-    "Edit an existing user. This can only be done by administrators"
+    "Edit an existing user. This can only be done by administrators."
     editUser(input: UserEditInput!): User!
 }
\ No newline at end of file
diff --git a/graph/schema/project.gql b/graph/schema/project.gql
index a9a093e..76847c9 100644
--- a/graph/schema/project.gql
+++ b/graph/schema/project.gql
@@ -16,6 +16,8 @@ type Project {
     userPermissions: ProjectPermission!
     "List all project statuses."
     statuses(filter: ProjectStatusFilter): [ProjectStatus!]!
+    "The activities in this project."
+    activities: [Activity!]!
 }
 
 "The permissions of a user within the project."
diff --git a/internal/generate/ids.go b/internal/generate/ids.go
index bcc2e37..e9d086d 100644
--- a/internal/generate/ids.go
+++ b/internal/generate/ids.go
@@ -1,5 +1,9 @@
 package generate
 
+func ActivityID() string {
+	return Generate(16, "A")
+}
+
 func ItemID() string {
 	return Generate(32, "I")
 }
diff --git a/migrations/mysql/20200508155557_create_table_activity.sql b/migrations/mysql/20200508155557_create_table_activity.sql
new file mode 100644
index 0000000..a4f6f9d
--- /dev/null
+++ b/migrations/mysql/20200508155557_create_table_activity.sql
@@ -0,0 +1,20 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE activity (
+    activity_id CHAR(16) PRIMARY KEY,
+    project_id CHAR(16) NOT NULL,
+    name VARCHAR(255) NOT NULL,
+    countable BOOLEAN NOT NULL,
+    unit_is_time BOOLEAN NOT NULL,
+    unit_name VARCHAR(255) NOT NULL,
+    unit_value FLOAT NOT NULL,
+    base_value FLOAT NOT NULL,
+
+    INDEX(Project_id)
+);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE activity;
+-- +goose StatementEnd
diff --git a/models/activity.go b/models/activity.go
index 3d24021..2bffd7c 100644
--- a/models/activity.go
+++ b/models/activity.go
@@ -3,10 +3,17 @@ package models
 // Activity is an activity within a project that can be measured and estimated, for example "writing" or "developing".
 // The points are for the "gamified" aspect of this.
 type Activity struct {
-	ID        string  `db:"activity_id"`
-	ProjectID string  `db:"project_id"`
-	Countable bool    `db:"countable"`
-	UnitName  string  `db:"unit_name"`
-	UnitValue float64 `db:"unit_value"`
-	BaseValue float64 `db:"base_value"`
+	ID              string  `db:"activity_id"`
+	ProjectID       string  `db:"project_id"`
+	Name            string  `db:"name"`
+	Countable       bool    `db:"countable"`
+	UnitIsTimeSpent bool    `db:"unit_is_time"`
+	UnitName        string  `db:"unit_name"`
+	UnitValue       float64 `db:"unit_value"`
+	BaseValue       float64 `db:"base_value"`
+}
+
+type ActivityFilter struct {
+	ActivityIDs []string
+	ProjectIDs  []string
 }
diff --git a/models/projectpermission.go b/models/projectpermission.go
index d85466c..44681b1 100644
--- a/models/projectpermission.go
+++ b/models/projectpermission.go
@@ -34,3 +34,7 @@ func (permission *ProjectPermission) CanManageAnyIssue() bool {
 func (permission *ProjectPermission) CanManagePermissions() bool {
 	return permission.Level >= ProjectPermissionLevelOwner
 }
+
+func (permission *ProjectPermission) CanManageActivities() bool {
+	return permission.Level >= ProjectPermissionLevelAdmin
+}