diff --git a/cleoc/cleoc/config.go b/cleoc/cleoc/config.go
index edee522e..5fe183fa 100644
--- a/cleoc/cleoc/config.go
+++ b/cleoc/cleoc/config.go
@@ -1,11 +1,12 @@
 package cleoc
 
 import (
-	"fmt"
 	"strings"
 
 	"github.com/adrg/xdg"
 	"github.com/spf13/viper"
+
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 const DefaultConfigFileName = "cleoc"
@@ -37,7 +38,7 @@ func (c *Config) LoadWithViper(v *viper.Viper) error {
 				// Note that ConfigFileNotFoundError is not returned when
 				// explicitly specifying a config path (--config), which should
 				// (and does) cause an error if it doesn't exist.
-				return fmt.Errorf("error reading config file: %w", err)
+				return errors.Newf("error reading config file: %w", err)
 			}
 		}
 	}
diff --git a/cleoc/cleoc/forecast.go b/cleoc/cleoc/forecast.go
index 10544f73..e3caf9e5 100644
--- a/cleoc/cleoc/forecast.go
+++ b/cleoc/cleoc/forecast.go
@@ -2,7 +2,6 @@ package cleoc
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"net/http"
 	"time"
@@ -11,6 +10,7 @@ import (
 	"github.com/hashicorp/go-multierror"
 
 	"github.com/cleodora-forecasting/cleodora/cleoc/gqclient"
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 // AddForecast creates a new forecast.
@@ -18,13 +18,13 @@ import (
 func (a *App) AddForecast(opts AddForecastOptions) error {
 	resolvesT, err := time.Parse(time.RFC3339, opts.Resolves)
 	if err != nil {
-		return fmt.Errorf("could not parse 'resolves': %w", err)
+		return errors.Newf("could not parse 'resolves': %w", err)
 	}
 	var closesT *time.Time
 	if opts.Closes != "" {
 		parsedTime, err := time.Parse(time.RFC3339, opts.Closes)
 		if err != nil {
-			return fmt.Errorf("could not parse 'closes': %w", err)
+			return errors.Newf("could not parse 'closes': %w", err)
 		}
 		closesT = &parsedTime
 	}
@@ -42,7 +42,7 @@ func (a *App) AddForecast(opts AddForecastOptions) error {
 
 	reqProbabilities, err := parseProbabilities(opts.Probabilities)
 	if err != nil {
-		return fmt.Errorf("error parsing probabilities: %w", err)
+		return errors.Newf("error parsing probabilities: %w", err)
 	}
 
 	estimate := gqclient.NewEstimate{
@@ -51,7 +51,7 @@ func (a *App) AddForecast(opts AddForecastOptions) error {
 	}
 	resp, err := gqclient.CreateForecast(ctx, client, forecast, estimate)
 	if err != nil {
-		return fmt.Errorf("error calling the API: %w", err)
+		return errors.Newf("error calling the API: %w", err)
 	}
 	_, err = fmt.Fprint(a.Out, resp.CreateForecast.Id+"\n")
 	if err != nil {
@@ -141,7 +141,7 @@ func (opts *AddForecastOptions) Validate() error {
 	if sumProbabilities != 100 {
 		validationErr = multierror.Append(
 			validationErr,
-			fmt.Errorf(
+			errors.Newf(
 				"all probabilities must add up to 100 (here only %v)",
 				sumProbabilities,
 			),
diff --git a/cleosrv/cleosrv/cleosrv.go b/cleosrv/cleosrv/cleosrv.go
index 0a125305..b2662fbc 100644
--- a/cleosrv/cleosrv/cleosrv.go
+++ b/cleosrv/cleosrv/cleosrv.go
@@ -18,6 +18,7 @@ import (
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph"
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph/generated"
 	"github.com/cleodora-forecasting/cleodora/cleoutils"
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 type App struct {
@@ -56,7 +57,7 @@ Listening on: %s
 
 	err := os.MkdirAll(filepath.Dir(a.Config.Database), 0770)
 	if err != nil {
-		return fmt.Errorf("error making directories for database %v: %w", a.Config.Database, err)
+		return errors.Newf("error making directories for database %v: %w", a.Config.Database, err)
 	}
 
 	router := chi.NewRouter()
@@ -103,7 +104,7 @@ func (a *App) InitDB() (*gorm.DB, error) {
 
 	err = migrateDB(db)
 	if err != nil {
-		return nil, fmt.Errorf("migrating data: %w", err)
+		return nil, errors.Newf("migrating data: %w", err)
 	}
 
 	return db, nil
@@ -121,7 +122,7 @@ func migrateDB(db *gorm.DB) error {
 		return tx.Migrator().AutoMigrate(&Migrations{})
 	})
 	if err != nil {
-		return fmt.Errorf("auto migrating 'migrations' table: %w", err)
+		return errors.Newf("auto migrating 'migrations' table: %w", err)
 	}
 	// If the DB is completely new then we just insert all migrations as 'done'
 	// i.e. they are not really executed because the createDb() function is
@@ -130,7 +131,7 @@ func migrateDB(db *gorm.DB) error {
 		err := db.Transaction(func(tx *gorm.DB) error {
 			err := createDb(tx)
 			if err != nil {
-				return fmt.Errorf("creating tables: %w", err)
+				return errors.Newf("creating tables: %w", err)
 			}
 			// save all migrations as done in the DB, without executing the
 			// functions.
@@ -146,7 +147,7 @@ func migrateDB(db *gorm.DB) error {
 			}
 			ret := tx.Create(mEntries)
 			if ret.Error != nil {
-				return fmt.Errorf("storing migrations as done in DB: %w", ret.Error)
+				return errors.Newf("storing migrations as done in DB: %w", ret.Error)
 			}
 			return nil
 		})
@@ -157,7 +158,7 @@ func migrateDB(db *gorm.DB) error {
 		var count int64
 		ret := db.Model(&Migrations{}).Where("id = ?", m.ID).Count(&count)
 		if ret.Error != nil {
-			return fmt.Errorf("selecting migration %v: %w", m.ID, ret.Error)
+			return errors.Newf("selecting migration %v: %w", m.ID, ret.Error)
 		}
 		if count == 1 {
 			continue // migration already ran in the past
@@ -167,7 +168,7 @@ func migrateDB(db *gorm.DB) error {
 			if m.Up != nil {
 				err = m.Up(tx)
 				if err != nil {
-					return fmt.Errorf("running %v: %w", m.ID, err)
+					return errors.Newf("running %v: %w", m.ID, err)
 				}
 			}
 			ret = tx.Create(Migrations{
@@ -175,7 +176,7 @@ func migrateDB(db *gorm.DB) error {
 				Applied: time.Now().UTC(),
 			})
 			if ret.Error != nil {
-				return fmt.Errorf("saving migration %v: %w", m.ID, ret.Error)
+				return errors.Newf("saving migration %v: %w", m.ID, ret.Error)
 			}
 			fmt.Printf("Finished DB migration '%v'\n", m.ID)
 			return nil
@@ -225,7 +226,7 @@ var dbMigrations = []dbMigration{
 			var forecasts []Forecast
 			ret := db.Find(&forecasts)
 			if ret.Error != nil {
-				return fmt.Errorf("getting forecasts: %w", ret.Error)
+				return errors.Newf("getting forecasts: %w", ret.Error)
 			}
 			for _, f := range forecasts {
 				f.Created = f.Created.UTC()
@@ -252,7 +253,7 @@ var dbMigrations = []dbMigration{
 				}
 				ret = db.Save(f)
 				if ret.Error != nil {
-					return fmt.Errorf("saving %v: %w", f.ID, ret.Error)
+					return errors.Newf("saving %v: %w", f.ID, ret.Error)
 				}
 			}
 			return nil
@@ -268,14 +269,14 @@ var dbMigrations = []dbMigration{
 			var estimates []Estimate
 			ret := db.Find(&estimates)
 			if ret.Error != nil {
-				return fmt.Errorf("getting estimates: %w", ret.Error)
+				return errors.Newf("getting estimates: %w", ret.Error)
 			}
 			for _, e := range estimates {
 				e.Created = e.Created.UTC()
 				e.CreatedAt = e.CreatedAt.UTC()
 				ret = db.Save(e)
 				if ret.Error != nil {
-					return fmt.Errorf("saving %v: %w", e.ID, ret.Error)
+					return errors.Newf("saving %v: %w", e.ID, ret.Error)
 				}
 			}
 			return nil
@@ -290,13 +291,13 @@ var dbMigrations = []dbMigration{
 			var outcomes []Outcome
 			ret := db.Find(&outcomes)
 			if ret.Error != nil {
-				return fmt.Errorf("getting outcomes: %w", ret.Error)
+				return errors.Newf("getting outcomes: %w", ret.Error)
 			}
 			for _, o := range outcomes {
 				o.CreatedAt = o.CreatedAt.UTC()
 				ret = db.Save(o)
 				if ret.Error != nil {
-					return fmt.Errorf("saving %v: %w", o.ID, ret.Error)
+					return errors.Newf("saving %v: %w", o.ID, ret.Error)
 				}
 			}
 			return nil
@@ -311,13 +312,13 @@ var dbMigrations = []dbMigration{
 			var probabilities []Probability
 			ret := db.Find(&probabilities)
 			if ret.Error != nil {
-				return fmt.Errorf("getting probabilities: %w", ret.Error)
+				return errors.Newf("getting probabilities: %w", ret.Error)
 			}
 			for _, p := range probabilities {
 				p.CreatedAt = p.CreatedAt.UTC()
 				ret = db.Save(p)
 				if ret.Error != nil {
-					return fmt.Errorf("saving %v: %w", p.ID, ret.Error)
+					return errors.Newf("saving %v: %w", p.ID, ret.Error)
 				}
 			}
 			return nil
@@ -366,7 +367,7 @@ var dbMigrations = []dbMigration{
 				Scan(&estimateBriers)
 
 			if ret.Error != nil {
-				return fmt.Errorf("error calculating brier score: %w", ret.Error)
+				return errors.Newf("error calculating brier score: %w", ret.Error)
 			}
 
 			for _, r := range estimateBriers {
@@ -374,7 +375,7 @@ var dbMigrations = []dbMigration{
 					Where("id = ?", r.ID).
 					Update("brier_score", r.Brier)
 				if ret.Error != nil {
-					return fmt.Errorf("error updating brier score: %w", ret.Error)
+					return errors.Newf("error updating brier score: %w", ret.Error)
 				}
 			}
 
diff --git a/cleosrv/cleosrv/config.go b/cleosrv/cleosrv/config.go
index 3dc9bbbb..71ec7d40 100644
--- a/cleosrv/cleosrv/config.go
+++ b/cleosrv/cleosrv/config.go
@@ -1,11 +1,12 @@
 package cleosrv
 
 import (
-	"fmt"
 	"strings"
 
 	"github.com/adrg/xdg"
 	"github.com/spf13/viper"
+
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 const DefaultConfigFileName = "cleosrv"
@@ -41,7 +42,7 @@ func (c *Config) LoadWithViper(v *viper.Viper) error {
 				// Note that ConfigFileNotFoundError is not returned when
 				// explicitly specifying a config path (--config), which should
 				// (and does) cause an error if it doesn't exist.
-				return fmt.Errorf("error reading config file: %w", err)
+				return errors.Newf("error reading config file: %w", err)
 			}
 		}
 	}
diff --git a/cleosrv/graph/resolver.go b/cleosrv/graph/resolver.go
index 35cc98c3..a5ceb7ba 100644
--- a/cleosrv/graph/resolver.go
+++ b/cleosrv/graph/resolver.go
@@ -4,7 +4,6 @@ package graph
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"html"
 	"strconv"
@@ -15,6 +14,7 @@ import (
 
 	"github.com/cleodora-forecasting/cleodora/cleosrv/dbmodel"
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph/model"
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 // This file will not be regenerated automatically.
@@ -55,12 +55,12 @@ func createEstimate(
 	estimate model.NewEstimate,
 ) (*model.Estimate, error) {
 	if err := validateNewEstimate(&estimate, false); err != nil {
-		return nil, fmt.Errorf("error validating NewEstimate: %w", err)
+		return nil, errors.Newf("error validating NewEstimate: %w", err)
 	}
 	forecast := dbmodel.Forecast{}
 	ret := tx.Where("id = ?", forecastID).First(&forecast)
 	if ret.Error != nil {
-		return nil, fmt.Errorf("error getting Forecast with ID %v: %w", forecastID, ret.Error)
+		return nil, errors.Newf("error getting Forecast with ID %v: %w", forecastID, ret.Error)
 	}
 
 	if estimate.Created.Before(forecast.Created) {
@@ -92,7 +92,7 @@ func createEstimate(
 	).Where("estimates.forecast_id = ?", forecastID).
 		Distinct().Pluck("outcomes.id", &validOutcomeIds)
 	if ret.Error != nil {
-		return nil, fmt.Errorf("error getting outcome IDs: %w", ret.Error)
+		return nil, errors.Newf("error getting outcome IDs: %w", ret.Error)
 	}
 
 	var submittedOutcomeIds []string
@@ -102,12 +102,12 @@ func createEstimate(
 
 	invalidOutcomeIds := stringSetDiff(submittedOutcomeIds, validOutcomeIds)
 	if len(invalidOutcomeIds) > 0 {
-		return nil, fmt.Errorf("invalid Outcome IDs: %v", invalidOutcomeIds)
+		return nil, errors.Newf("invalid Outcome IDs: %v", invalidOutcomeIds)
 	}
 
 	missingOutcomeIds := stringSetDiff(validOutcomeIds, submittedOutcomeIds)
 	if len(missingOutcomeIds) > 0 {
-		return nil, fmt.Errorf("missing Outcome IDs: %v", missingOutcomeIds)
+		return nil, errors.Newf("missing Outcome IDs: %v", missingOutcomeIds)
 	}
 
 	var probabilities []dbmodel.Probability
@@ -115,7 +115,7 @@ func createEstimate(
 	for _, p := range estimate.Probabilities {
 		outcomeID, err := strconv.ParseUint(*p.OutcomeID, 10, 64)
 		if err != nil {
-			return nil, fmt.Errorf("can't parse %v as uint: %w", outcomeID, err)
+			return nil, errors.Newf("can't parse %v as uint: %w", outcomeID, err)
 		}
 		probabilities = append(
 			probabilities,
@@ -134,7 +134,7 @@ func createEstimate(
 
 	err := tx.Model(&forecast).Association("Estimates").Append(&dbEstimate)
 	if err != nil {
-		return nil, fmt.Errorf("error creating Estimate: %w", err)
+		return nil, errors.Newf("error creating Estimate: %w", err)
 	}
 
 	return convertEstimateDBToGQL(dbEstimate), nil
@@ -192,7 +192,7 @@ func validateNewForecast(forecast *model.NewForecast) error {
 		if forecast.Closes.After(forecast.Resolves) {
 			validationErr = multierror.Append(
 				validationErr,
-				fmt.Errorf(
+				errors.Newf(
 					"'Closes' can't be set to a later date than 'Resolves'. "+
 						"Closes is '%v'. Resolves is '%v'",
 					*forecast.Closes,
@@ -217,7 +217,7 @@ func validateNewForecast(forecast *model.NewForecast) error {
 	if forecast.Resolves.Before(*forecast.Created) {
 		validationErr = multierror.Append(
 			validationErr,
-			fmt.Errorf(
+			errors.Newf(
 				"'Resolves' can't be set to an earlier date than 'Created'. "+
 					"Resolves is '%v'. Created is '%v'",
 				forecast.Resolves,
@@ -275,7 +275,7 @@ func validateNewEstimate(estimate *model.NewEstimate, duringCreateForecast bool)
 				if _, ok := existingOutcomes[p.Outcome.Text]; ok {
 					validationErr = multierror.Append(
 						validationErr,
-						fmt.Errorf("outcome '%v' is a duplicate", p.Outcome.Text),
+						errors.Newf("outcome '%v' is a duplicate", p.Outcome.Text),
 					)
 				}
 				existingOutcomes[p.Outcome.Text] = true
@@ -302,7 +302,7 @@ func validateNewEstimate(estimate *model.NewEstimate, duringCreateForecast bool)
 		if p.Value < 0 || p.Value > 100 {
 			validationErr = multierror.Append(
 				validationErr,
-				fmt.Errorf("probabilities must be between 0 and 100, not %v", p.Value),
+				errors.Newf("probabilities must be between 0 and 100, not %v", p.Value),
 			)
 		}
 		sumProbabilities += p.Value
@@ -310,7 +310,7 @@ func validateNewEstimate(estimate *model.NewEstimate, duringCreateForecast bool)
 	if sumProbabilities != 100 {
 		validationErr = multierror.Append(
 			validationErr,
-			fmt.Errorf("probabilities must add up to 100, not %v", sumProbabilities),
+			errors.Newf("probabilities must add up to 100, not %v", sumProbabilities),
 		)
 	}
 
@@ -320,7 +320,7 @@ func validateNewEstimate(estimate *model.NewEstimate, duringCreateForecast bool)
 		if estimate.Created.After(now) {
 			validationErr = multierror.Append(
 				validationErr,
-				fmt.Errorf(
+				errors.Newf(
 					"'created' can't be in the future: %v",
 					estimate.Created,
 				),
diff --git a/cleosrv/graph/schema.resolvers.go b/cleosrv/graph/schema.resolvers.go
index 791226c8..6bf3cdb6 100644
--- a/cleosrv/graph/schema.resolvers.go
+++ b/cleosrv/graph/schema.resolvers.go
@@ -6,7 +6,6 @@ package graph
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"html"
 	"time"
@@ -15,6 +14,7 @@ import (
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph/generated"
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph/model"
 	"github.com/cleodora-forecasting/cleodora/cleoutils"
+	errors2 "github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 	"gorm.io/gorm"
 )
 
@@ -22,14 +22,14 @@ import (
 func (r *mutationResolver) CreateForecast(ctx context.Context, forecast model.NewForecast, estimate model.NewEstimate) (*model.Forecast, error) {
 	err := validateNewForecast(&forecast)
 	if err != nil {
-		return nil, fmt.Errorf("error validating NewForecast: %w", err)
+		return nil, errors2.Newf("error validating NewForecast: %w", err)
 	}
 	// We want the first estimate to have the same 'Created' time as the
 	// forecast itself because it's logical that it would be that way.
 	estimate.Created = forecast.Created
 	err = validateNewEstimate(&estimate, true)
 	if err != nil {
-		return nil, fmt.Errorf("error validating NewEstimate: %w", err)
+		return nil, errors2.Newf("error validating NewEstimate: %w", err)
 	}
 	dbForecast := dbmodel.Forecast{
 		Title:       html.EscapeString(forecast.Title),
@@ -46,7 +46,7 @@ func (r *mutationResolver) CreateForecast(ctx context.Context, forecast model.Ne
 		return ret.Error
 	})
 	if err != nil {
-		return nil, fmt.Errorf("creating forecast: %w", err)
+		return nil, errors2.Newf("creating forecast: %w", err)
 	}
 
 	retForecast := model.Forecast{
@@ -71,7 +71,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 		}
 	}()
 	if err := tx.Error; err != nil {
-		return nil, fmt.Errorf("error creating transaction: %w", err)
+		return nil, errors2.Newf("error creating transaction: %w", err)
 	}
 
 	resolutionToSet := dbmodel.ResolutionResolved
@@ -81,12 +81,12 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 
 	if resolutionToSet == dbmodel.ResolutionUnresolved {
 		_ = tx.Rollback()
-		return nil, fmt.Errorf("resolution %v is not allowed", resolutionToSet)
+		return nil, errors2.Newf("resolution %v is not allowed", resolutionToSet)
 	}
 
 	if resolutionToSet == dbmodel.ResolutionResolved && correctOutcomeID == nil {
 		_ = tx.Rollback()
-		return nil, fmt.Errorf(
+		return nil, errors2.Newf(
 			"to resolve as %v, an Outcome must be specified",
 			resolutionToSet,
 		)
@@ -96,12 +96,12 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 	ret := tx.Where("id = ?", forecastID).First(&forecast)
 	if ret.Error != nil {
 		_ = tx.Rollback()
-		return nil, fmt.Errorf("error getting Forecast with ID %v: %w", forecastID, ret.Error)
+		return nil, errors2.Newf("error getting Forecast with ID %v: %w", forecastID, ret.Error)
 	}
 
 	if forecast.Resolution != dbmodel.ResolutionUnresolved {
 		_ = tx.Rollback()
-		return nil, errors.New("forecast has already been resolved")
+		return nil, errors2.New("forecast has already been resolved")
 	}
 
 	forecast.Resolution = resolutionToSet
@@ -115,7 +115,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 	ret = tx.Save(&forecast)
 	if ret.Error != nil {
 		_ = tx.Rollback()
-		return nil, fmt.Errorf("error setting resolution: %w", ret.Error)
+		return nil, errors2.Newf("error setting resolution: %w", ret.Error)
 	}
 
 	if resolutionToSet == dbmodel.ResolutionResolved {
@@ -123,7 +123,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 		ret = tx.Where("id = ?", correctOutcomeID).First(&outcome)
 		if ret.Error != nil {
 			_ = tx.Rollback()
-			return nil, fmt.Errorf("error getting outcome: %w", ret.Error)
+			return nil, errors2.Newf("error getting outcome: %w", ret.Error)
 		}
 
 		matchingForecast := dbmodel.Forecast{}
@@ -139,19 +139,19 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 
 		if ret.Error != nil {
 			_ = tx.Rollback()
-			return nil, fmt.Errorf("can't match forecast and outcome: %w", ret.Error)
+			return nil, errors2.Newf("can't match forecast and outcome: %w", ret.Error)
 		}
 
 		if ret.RowsAffected != 1 {
 			_ = tx.Rollback()
-			return nil, errors.New("can't match forecast and outcome")
+			return nil, errors2.New("can't match forecast and outcome")
 		}
 
 		outcome.Correct = true
 		ret = tx.Save(&outcome)
 		if ret.Error != nil {
 			_ = tx.Rollback()
-			return nil, fmt.Errorf("error updating outcome: %w", ret.Error)
+			return nil, errors2.Newf("error updating outcome: %w", ret.Error)
 		}
 
 		type EstimateBrier struct {
@@ -182,7 +182,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 
 		if ret.Error != nil {
 			_ = tx.Rollback()
-			return nil, fmt.Errorf("error calculating brier score: %w", ret.Error)
+			return nil, errors2.Newf("error calculating brier score: %w", ret.Error)
 		}
 
 		for _, r := range estimateBriers {
@@ -191,7 +191,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 				Update("brier_score", r.Brier)
 			if ret.Error != nil {
 				_ = tx.Rollback()
-				return nil, fmt.Errorf("error updating brier score: %w", ret.Error)
+				return nil, errors2.Newf("error updating brier score: %w", ret.Error)
 			}
 		}
 	}
@@ -200,7 +200,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 	ret = tx.Preload("Estimates.Probabilities.Outcome").Find(&forecast)
 	if ret.Error != nil {
 		_ = tx.Rollback()
-		return nil, fmt.Errorf("error preloading: %w", ret.Error)
+		return nil, errors2.Newf("error preloading: %w", ret.Error)
 	}
 
 	var estimates []*model.Estimate
@@ -243,7 +243,7 @@ func (r *mutationResolver) ResolveForecast(ctx context.Context, forecastID strin
 	}
 	ret = tx.Commit()
 	if ret.Error != nil {
-		return nil, fmt.Errorf("error committing: %w", ret.Error)
+		return nil, errors2.Newf("error committing: %w", ret.Error)
 	}
 	return &rf, nil
 }
diff --git a/cleosrv/integrationtest/create_test_sql/main.go b/cleosrv/integrationtest/create_test_sql/main.go
index 0b5c69b8..3945cb24 100644
--- a/cleosrv/integrationtest/create_test_sql/main.go
+++ b/cleosrv/integrationtest/create_test_sql/main.go
@@ -11,7 +11,6 @@ package main
 import (
 	"bytes"
 	"context"
-	"errors"
 	"fmt"
 	"os"
 	"os/exec"
@@ -22,6 +21,7 @@ import (
 	"github.com/Khan/genqlient/graphql"
 
 	"github.com/cleodora-forecasting/cleodora/cleosrv/integrationtest"
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 func main() {
@@ -86,7 +86,7 @@ Example:
 
 	version, err := getVersion(c)
 	if err != nil {
-		return fmt.Errorf("getting version: %w", err)
+		return errors.Newf("getting version: %w", err)
 	}
 	fmt.Println("cleosrv version:", version)
 
@@ -96,7 +96,7 @@ Example:
 
 	err = cleosrvCmd.Process.Kill()
 	if err != nil {
-		return fmt.Errorf("stopping cleosrvCmd: %w", err)
+		return errors.Newf("stopping cleosrvCmd: %w", err)
 	}
 
 	err = integrationtest.CopyFile(dbPath, resultDb)
@@ -137,10 +137,10 @@ func executeQueries(c graphql.Client, version string) error {
 	}
 	resp, err := integrationtest.CreateForecast(context.Background(), c, f1, e1)
 	if err != nil {
-		return fmt.Errorf("create f1: %w", err)
+		return errors.Newf("create f1: %w", err)
 	}
 	if resp.CreateForecast.Id == "" {
-		return fmt.Errorf("unexpected response f1: %v", resp)
+		return errors.Newf("unexpected response f1: %v", resp)
 	}
 
 	// Create another forecast with 'created', 'resolves' and 'closes' in the
@@ -149,7 +149,7 @@ func executeQueries(c graphql.Client, version string) error {
 
 	newYork, err := time.LoadLocation("America/New_York")
 	if err != nil {
-		return fmt.Errorf("can't get TZ loc: %w", err)
+		return errors.Newf("can't get TZ loc: %w", err)
 	}
 
 	f2 := integrationtest.NewForecast{
@@ -177,10 +177,10 @@ func executeQueries(c graphql.Client, version string) error {
 	}
 	resp, err = integrationtest.CreateForecast(context.Background(), c, f2, e2)
 	if err != nil {
-		return fmt.Errorf("create f2: %w", err)
+		return errors.Newf("create f2: %w", err)
 	}
 	if resp.CreateForecast.Id == "" {
-		return fmt.Errorf("unexpected response f2: %v", resp)
+		return errors.Newf("unexpected response f2: %v", resp)
 	}
 
 	f3 := integrationtest.NewForecast{
@@ -211,10 +211,10 @@ func executeQueries(c graphql.Client, version string) error {
 	}
 	resp, err = integrationtest.CreateForecast(context.Background(), c, f3, e3)
 	if err != nil {
-		return fmt.Errorf("create f3: %w", err)
+		return errors.Newf("create f3: %w", err)
 	}
 	if resp.CreateForecast.Id == "" {
-		return fmt.Errorf("unexpected response f3: %v", resp)
+		return errors.Newf("unexpected response f3: %v", resp)
 	}
 
 	// Resolve the forecast f3
@@ -226,7 +226,7 @@ func executeQueries(c graphql.Client, version string) error {
 		}
 	}
 	if yesOutcomeId == "" {
-		return fmt.Errorf("could not find outcome 'Yes': %v", resp)
+		return errors.Newf("could not find outcome 'Yes': %v", resp)
 	}
 
 	// Backport this script to 0.2.0 then overwrite the DB
@@ -239,14 +239,14 @@ func executeQueries(c graphql.Client, version string) error {
 		&resolutionResolved,
 	)
 	if err != nil {
-		return fmt.Errorf("resolve f3 err: %w", err)
+		return errors.Newf("resolve f3 err: %w", err)
 	}
 
 	if resolveResp.ResolveForecast.Resolution != integrationtest.ResolutionResolved {
-		return fmt.Errorf("resolution is not RESOLVED: %v", resolveResp)
+		return errors.Newf("resolution is not RESOLVED: %v", resolveResp)
 	}
 	if resolveResp.ResolveForecast.Id != f3Id {
-		return fmt.Errorf("the IDs don't match: %v", resolveResp)
+		return errors.Newf("the IDs don't match: %v", resolveResp)
 	}
 
 	return nil
diff --git a/cleosrv/integrationtest/helper.go b/cleosrv/integrationtest/helper.go
index af5a24ca..75a0fe96 100644
--- a/cleosrv/integrationtest/helper.go
+++ b/cleosrv/integrationtest/helper.go
@@ -17,6 +17,7 @@ import (
 	"github.com/cleodora-forecasting/cleodora/cleosrv/cleosrv"
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph"
 	"github.com/cleodora-forecasting/cleodora/cleosrv/graph/generated"
+	"github.com/cleodora-forecasting/cleodora/cleoutils/errors"
 )
 
 // initServerAndGetClient returns a graphql.Client generated by genqlient
@@ -83,20 +84,20 @@ func CopyFile(src string, dst string) error {
 	// Open original file
 	srcF, err := os.Open(src)
 	if err != nil {
-		return fmt.Errorf("open src: %w", err)
+		return errors.Newf("open src: %w", err)
 	}
 	defer func() { _ = srcF.Close() }()
 
 	// Create new file
 	dstF, err := os.Create(dst)
 	if err != nil {
-		return fmt.Errorf("open dst: %w", err)
+		return errors.Newf("open dst: %w", err)
 	}
 	defer func() { _ = dstF.Close() }()
 
 	_, err = io.Copy(dstF, srcF)
 	if err != nil {
-		return fmt.Errorf("copying file: %w", err)
+		return errors.Newf("copying file: %w", err)
 	}
 	return nil
 }
diff --git a/cleoutils/errors/errors.go b/cleoutils/errors/errors.go
new file mode 100644
index 00000000..67ac03ac
--- /dev/null
+++ b/cleoutils/errors/errors.go
@@ -0,0 +1,33 @@
+// Package errors is a wrapper for github.com/cockroachdb/errors
+// to make it easier to replace later, if necessary.
+package errors
+
+import "github.com/cockroachdb/errors"
+
+func New(msg string) error {
+	return errors.New(msg)
+}
+
+func Newf(format string, args ...interface{}) error {
+	return errors.Newf(format, args...)
+}
+
+func Wrap(err error, msg string) error {
+	return errors.Wrap(err, msg)
+}
+
+func Wrapf(err error, msg string, args ...interface{}) error {
+	return errors.Wrapf(err, msg, args...)
+}
+
+func WithHint(err error, msg string) error {
+	return errors.WithHint(err, msg)
+}
+
+func WithHintf(err error, format string, args ...interface{}) error {
+	return errors.WithHintf(err, format, args...)
+}
+
+func FlattenHints(err error) string {
+	return errors.FlattenHints(err)
+}
diff --git a/go.mod b/go.mod
index cd551ee7..ebe95acf 100644
--- a/go.mod
+++ b/go.mod
@@ -7,6 +7,7 @@ require (
 	github.com/Khan/genqlient v0.6.0
 	github.com/adrg/xdg v0.4.0
 	github.com/carolynvs/magex v0.9.0
+	github.com/cockroachdb/errors v1.2.4
 	github.com/glebarez/sqlite v1.9.0
 	github.com/go-chi/chi/v5 v5.0.10
 	github.com/golangci/golangci-lint v1.53.3
@@ -118,12 +119,14 @@ require (
 	github.com/caarlos0/log v0.4.2 // indirect
 	github.com/cavaliergopher/cpio v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.2.0 // indirect
+	github.com/certifi/gocertifi v0.0.0-20200922220541-2c3bb06c6054 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/charithe/durationcheck v0.0.10 // indirect
 	github.com/charmbracelet/lipgloss v0.7.1 // indirect
 	github.com/chavacava/garif v0.0.0-20230227094218-b8c73b2037b8 // indirect
 	github.com/chrismellard/docker-credential-acr-env v0.0.0-20220327082430-c57b701bfc08 // indirect
 	github.com/cloudflare/circl v1.3.3 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f // indirect
 	github.com/containerd/stargz-snapshotter/estargz v0.14.3 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
 	github.com/curioswitch/go-reassign v0.2.0 // indirect
@@ -155,6 +158,7 @@ require (
 	github.com/firefart/nonamedreturns v1.0.4 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/fzipp/gocyclo v0.6.0 // indirect
+	github.com/getsentry/raven-go v0.2.0 // indirect
 	github.com/glebarez/go-sqlite v1.21.2 // indirect
 	github.com/go-critic/go-critic v0.8.1 // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
diff --git a/go.sum b/go.sum
index 9b72250b..8f3eccc7 100644
--- a/go.sum
+++ b/go.sum
@@ -1017,6 +1017,7 @@ github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA
 github.com/census-instrumentation/opencensus-proto v0.3.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.4.1/go.mod h1:4T9NM4+4Vw91VeyqjLS6ao50K5bOcLKN6Q42XnYaRYw=
 github.com/certifi/gocertifi v0.0.0-20191021191039-0944d244cd40/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
+github.com/certifi/gocertifi v0.0.0-20200922220541-2c3bb06c6054 h1:uH66TXeswKn5PW5zdZ39xEwfS9an067BirqA+P4QaLI=
 github.com/certifi/gocertifi v0.0.0-20200922220541-2c3bb06c6054/go.mod h1:sGbDF6GwGcLpkNXPUTkMRoywsNa/ol15pxFe6ERfguA=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -1071,7 +1072,9 @@ github.com/cncf/xds/go v0.0.0-20230607035331-e9ce68804cb4/go.mod h1:eXthEFrGJvWH
 github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
 github.com/cockroachdb/datadriven v0.0.0-20200714090401-bf6692d28da5/go.mod h1:h6jFvWxBdQXxjopDMZyH2UVceIRfR84bdzbkoKrsWNo=
+github.com/cockroachdb/errors v1.2.4 h1:Lap807SXTH5tri2TivECb/4abUkMZC9zRoLarvcKDqs=
 github.com/cockroachdb/errors v1.2.4/go.mod h1:rQD95gz6FARkaKkQXUksEje/d9a6wBJoCr5oaCLELYA=
+github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f h1:o/kfcElHqOiXqcou5a3rIlMc7oJbMQkeLk0VQJ7zgqY=
 github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f/go.mod h1:i/u985jwjWRlyHXQbwatDASoW0RMlZ/3i9yJHE2xLkI=
 github.com/containerd/aufs v0.0.0-20200908144142-dab0cbea06f4/go.mod h1:nukgQABAEopAHvB6j7cnP5zJ+/3aVcE7hCYqvIwAHyE=
 github.com/containerd/aufs v0.0.0-20201003224125-76a6863f2989/go.mod h1:AkGGQs9NM2vtYHaUen+NljV0/baGCAPELGm2q9ZXpWU=
@@ -1366,6 +1369,7 @@ github.com/fzipp/gocyclo v0.6.0 h1:lsblElZG7d3ALtGMx9fmxeTKZaLLpU8mET09yN4BBLo=
 github.com/fzipp/gocyclo v0.6.0/go.mod h1:rXPyn8fnlpa0R2csP/31uerbiVBugk5whMdlyaLkLoA=
 github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
 github.com/getkin/kin-openapi v0.76.0/go.mod h1:660oXbgy5JFMKreazJaQTw7o+X00qeSyhcnluiMv+Xg=
+github.com/getsentry/raven-go v0.2.0 h1:no+xWJRb5ZI7eE8TWgIq1jLulQiIoLG0IfYxv5JYMGs=
 github.com/getsentry/raven-go v0.2.0/go.mod h1:KungGk8q33+aIAZUIVWZDr2OfAEBsO49PX4NzFV5kcQ=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=