feat: allow configurating chains from solver config

app/app.go

@@ -182,12 +182,14 @@ func Run() error {
 	priceAPI := price.NewPricerProxy(multiPricer)
 	evmSignHandler := evmMessage.NewSignHandler(coordinator, host, communication, keyshareStore)
 
+	chainConfigs := config.MergeChainConfigs(configuration.ChainConfigs, *solverConfig)
+
 	var hubPoolContract across.TokenMatcher
 	acrossPools := make(map[uint64]common.Address)
 	lifiOutputSettlers := make(map[uint64]string)
 	repayerAddresses := make(map[uint64]common.Address)
 	tokens := make(map[uint64]map[string]config.TokenConfig)
-	for _, chainConfig := range configuration.ChainConfigs {
+	for _, chainConfig := range chainConfigs {
 		switch chainConfig["type"] {
 		case "evm":
 			{
@@ -230,7 +232,7 @@ func Run() error {
 		Tokens: tokens,
 	}
 
-	for _, chainConfig := range configuration.ChainConfigs {
+	for _, chainConfig := range chainConfigs {
 		switch chainConfig["type"] {
 		case "evm":
 			{

config/config.go

@@ -8,6 +8,8 @@ import (
 
 	"github.com/creasty/defaults"
 	"github.com/imdario/mergo"
+	solverConfig "github.com/sprintertech/solver-config/go/config"
+	"github.com/sprintertech/solver-sdk/pkg/chains/caip"
 	"github.com/sprintertech/sprinter-signing/config/relayer"
 
 	"github.com/spf13/cobra"
@@ -135,6 +137,44 @@ func compareDomainID(a, b interface{}) bool {
 	return false
 }
 
+// MergeChainConfigs fills in chains that are present in the shared solver
+// config but were not manually configured, deriving their endpoint from the
+// solver config's transport so a chain can be supported without a manual
+// chain config entry. Manually configured fields always take precedence.
+func MergeChainConfigs(chainConfigs []map[string]interface{}, solverConfig solverConfig.SolverConfig) []map[string]interface{} {
+	for caipID, c := range solverConfig.Chains {
+		id, err := caip.CAIPToChainID(caipID)
+		if err != nil {
+			continue
+		}
+
+		if chainExists(chainConfigs, id) {
+			continue
+		}
+
+		cc := map[string]interface{}{
+			"id":       id,
+			"type":     "evm",
+			"name":     fmt.Sprintf("chain-%d", id),
+			"endpoint": c.Transport.HTTP[0],
+		}
+		chainConfigs = append(chainConfigs, cc)
+	}
+
+	return chainConfigs
+}
+
+func chainExists(chainConfigs []map[string]interface{}, chainID uint64) bool {
+	for _, cc := range chainConfigs {
+		ccID := cc["id"].(uint64)
+		if ccID == chainID {
+			return true
+		}
+	}
+
+	return false
+}
+
 var (
 	// Flags for running the app
 	StagingFlagName     = "staging"

config/config_test.go

@@ -9,6 +9,7 @@ import (
 	"testing"
 	"time"
 
+	solverConfig "github.com/sprintertech/solver-config/go/config"
 	"github.com/sprintertech/sprinter-signing/config"
 	"github.com/sprintertech/sprinter-signing/config/relayer"
 	"github.com/stretchr/testify/suite"
@@ -579,3 +580,68 @@ func (s *GetConfigTestSuite) Test_GetConfigFromFile() {
 		})
 	}
 }
+
+type MergeChainConfigsTestSuite struct {
+	suite.Suite
+}
+
+func TestRunMergeChainConfigsTestSuite(t *testing.T) {
+	suite.Run(t, new(MergeChainConfigsTestSuite))
+}
+
+func (s *MergeChainConfigsTestSuite) Test_MergeChainConfigs_AddsChainFromSolverConfig() {
+	solverChains := map[string]solverConfig.Chain{
+		"eip155:10": {
+			Transport: solverConfig.Transport{
+				HTTP: []string{"https://chain10.example"},
+			},
+		},
+	}
+
+	merged := config.MergeChainConfigs(nil, solverConfig.SolverConfig{Chains: solverChains})
+
+	s.Len(merged, 1)
+	s.Equal(map[string]interface{}{
+		"id":       uint64(10),
+		"type":     "evm",
+		"name":     "chain-10",
+		"endpoint": "https://chain10.example",
+	}, merged[0])
+}
+
+func (s *MergeChainConfigsTestSuite) Test_MergeChainConfigs_ManuallyConfiguredChainNotOverwritten() {
+	solverChains := map[string]solverConfig.Chain{
+		"eip155:10": {
+			Transport: solverConfig.Transport{
+				HTTP: []string{"https://chain10.example"},
+			},
+		},
+	}
+
+	manual := []map[string]interface{}{
+		{
+			"id":       uint64(10),
+			"endpoint": "https://custom.example",
+			"admin":    "adminAddress",
+		},
+	}
+
+	merged := config.MergeChainConfigs(manual, solverConfig.SolverConfig{Chains: solverChains})
+
+	s.Equal(manual, merged)
+}
+
+func (s *MergeChainConfigsTestSuite) Test_MergeChainConfigs_KeepsManualOnlyChains() {
+	manual := []map[string]interface{}{
+		{
+			"id":       uint64(99),
+			"type":     "evm",
+			"endpoint": "https://manual-only.example",
+			"name":     "manual99",
+		},
+	}
+
+	merged := config.MergeChainConfigs(manual, solverConfig.SolverConfig{})
+
+	s.Equal(manual, merged)
+}

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/viper v1.9.0
 	github.com/sprintertech/solver-config/go v0.0.0-20260819115035-7b1b83250ca4
-	github.com/sprintertech/solver-sdk v1.1.1-0.20260825101026-32c00a9704e6
+	github.com/sprintertech/solver-sdk v1.1.1-0.20260827154133-1e8cff30b44b
 	github.com/stretchr/testify v1.11.1
 	github.com/sygmaprotocol/sygma-core v0.0.0-20250304150334-bd39ac4f7b82
 	go.opentelemetry.io/otel v1.39.0

go.sum

@@ -1721,6 +1721,8 @@ github.com/sprintertech/solver-sdk v1.1.1-0.20260821104752-6a3c113a5958 h1:++m9Z
 github.com/sprintertech/solver-sdk v1.1.1-0.20260821104752-6a3c113a5958/go.mod h1:6euNIW0DgGI/RfIvpZJgnvoVcd1PmzE1T20C0dXnyrc=
 github.com/sprintertech/solver-sdk v1.1.1-0.20260825101026-32c00a9704e6 h1:0bfmInjG3+ak7E65LVBVOQxArztBSZw49iNY9dpfS8I=
 github.com/sprintertech/solver-sdk v1.1.1-0.20260825101026-32c00a9704e6/go.mod h1:A9fQAvneC86+z0ib2cb+yTOV84olOqcBZxomj1pe3bc=
+github.com/sprintertech/solver-sdk v1.1.1-0.20260827154133-1e8cff30b44b h1:Xfr0QWclvoL0OGtjMrFTxoDU66JQHwBR8u1LdRYLba8=
+github.com/sprintertech/solver-sdk v1.1.1-0.20260827154133-1e8cff30b44b/go.mod h1:A9fQAvneC86+z0ib2cb+yTOV84olOqcBZxomj1pe3bc=
 github.com/status-im/keycard-go v0.2.0/go.mod h1:wlp8ZLbsmrF6g6WjugPAx+IzoLrkdf9+mHxBEeo3Hbg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=