DevTools

DevTools

PATH provides developer tools to help diagnose and debug endpoint behavior in real-time.

Disqualified Endpoints API

The /disqualified_endpoints endpoint is a powerful diagnostic tool that provides visibility into why certain endpoints are not being used by PATH for relay requests.

Quickstart

See the disqualified endpoints of your PATH gateway on base :

curl http://localhost:3069/disqualified_endpoints \
  -H "Target-Service-Id: base" | jq

🌿 GROVE EMPLOYEES ONLY

To see data on Grove's Portal, you can use the following command:

curl https://base.rpc.grove.city/disqualified_endpoints | jq

Note: GUARD will assign the service ID from the subdomain to the Target-Service-Id header.

What is it?

The Disqualified Endpoints API returns a comprehensive list of endpoints that have been temporarily or permanently excluded from serving requests for a given service. This includes:

• Protocol-level sanctions: Endpoints sanctioned due to relay errors or poor behavior (managed by Shannon protocol)
• QoS-level disqualifications: Endpoints failing quality-of-service checks (managed by EVM QoS service)

Why use it?

When developing or debugging PATH integrations, you may notice that certain endpoints aren't receiving traffic. This API helps you understand:

• Which endpoints are currently disqualified and why
• Whether the disqualification is temporary (session-based) or permanent
• Aggregate statistics about endpoint health across your service
• Which suppliers are affected by sanctions

How to use it

Endpoint: GET /disqualified_endpoints

Required Headers:

• Target-Service-Id: The service ID to query (e.g., base, eth, polygon)

Example Request:

curl http://localhost:3069/disqualified_endpoints \
  -H "Target-Service-Id: base" | jq

Or use the provided make target:

make disqualified_endpoints SERVICE_ID=base

Response Structure

The response from the disqualified endpoints API contains details about endpoints that have been excluded from serving requests.

Example Response JSON

{
  "protocol_level_disqualified_endpoints": {
    "permanently_sanctioned_endpoints": {},
    "session_sanctioned_endpoints": {
      "pokt13771d0a403a599ee4a3812321e2fabc509e7f3-https://us-west-test-endpoint-1.demo": {
        "supplier_address": "pokt13771d0a403a599ee4a3812321e2fabc509e7f3",
        "endpoint_url": "https://us-west-test-endpoint-1.demo",
        "reason": "relay error: relay: error sending request to endpoint https://us-west-test-endpoint-1.demo: Post \"https://us-west-test-endpoint-1.demo\": dial tcp: lookup us-west-test-endpoint-1.demo: no such host",
        "service_id": "base",
        "session_id": "5a496c9faaabbaa1d184cf89ddfeb603ff515b990c6f714701b71572ab750ae8",
        "app_addr": "pokt1ccae0ce5ef5b1bcd74f3794f5b717b98a86412",
        "sanction_type": "SHANNON_SANCTION_SESSION",
        "error_type": "SHANNON_ENDPOINT_ERROR_TIMEOUT",
        "session_height": 23951,
        "created_at": "2025-05-31T14:57:41.484372+01:00"
      }
    },
    "permanent_sanctioned_endpoints_count": 0,
    "session_sanctioned_endpoints_count": 1,
    "total_sanctioned_endpoints_count": 1
  },
  "qos_level_disqualified_endpoints": {
    "disqualified_endpoints": {
      "pokt1ccae0ce5ef5b1bcd74f3794f5b717b98a86412-https://us-west-test-endpoint-1.demo": {
        "endpoint_addr": "pokt1ccae0ce5ef5b1bcd74f3794f5b717b98a86412-https://us-west-test-endpoint-1.demo",
        "reason": "endpoint has not returned an archival balance response to a \"eth_getBalance\" request",
        "service_id": "base"
      }
    },
    "empty_response_count": 0,
    "chain_id_check_errors_count": 0,
    "archival_check_errors_count": 1,
    "block_number_check_errors_count": 0
  },
  "total_service_endpoints_count": 11,
  "qualified_service_endpoints_count": 9,
  "disqualified_service_endpoints_count": 2
}

JSON Field Descriptions

The response contains three main sections:

1. Protocol Level Disqualified Endpoints

This section contains information about endpoints sanctioned by the Shannon protocol:

Field	Description
permanently_sanctioned_endpoints	Map of endpoints with permanent sanctions (persist until gateway restart)
session_sanctioned_endpoints	Map of endpoints with temporary sanctions (expire after 1 hour or session change)
permanent_sanctioned_endpoints_count	Number of permanently sanctioned endpoints
session_sanctioned_endpoints_count	Number of temporarily sanctioned endpoints
total_sanctioned_endpoints_count	Total number of sanctioned endpoints

For each sanctioned endpoint:

Field	Description
supplier_addresses	Map of supplier addresses using this endpoint URL
endpoint_url	The URL of the sanctioned endpoint
reason	Detailed error message explaining the sanction reason
service_id	The service ID the endpoint was serving
session_id	Session identifier when the sanction was applied
app_addr	Application address that triggered the sanction
sanction_type	Type of sanction (SHANNON_SANCTION_SESSION or SHANNON_SANCTION_PERMANENT)
error_type	Specific error category (e.g., SHANNON_ENDPOINT_ERROR_TIMEOUT)
session_height	Blockchain height when the session started
created_at	Timestamp when the sanction was created

2. QoS Level Disqualified Endpoints

This section contains information about endpoints failing quality-of-service checks:

Field	Description
disqualified_endpoints	Map of endpoints failing QoS checks
empty_response_count	Number of endpoints returning empty responses
chain_id_check_errors_count	Number of endpoints with incorrect chain ID
archival_check_errors_count	Number of endpoints failing historical data queries
block_number_check_errors_count	Number of endpoints with outdated block height

For each disqualified endpoint:

Field	Description
endpoint_addr	Identifier for the endpoint (format: supplier-url)
reason	Detailed explanation of why the endpoint failed QoS checks
service_id	The service ID the endpoint was serving

3. Summary Statistics

These fields provide an overview of endpoint health:

Field	Description
total_service_endpoints_count	Total number of endpoints for the requested service
qualified_service_endpoints_count	Number of endpoints passing all checks
disqualified_service_endpoints_count	Number of endpoints failing one or more checks

Error Responses

400 Bad Request - Missing or invalid headers:

{
  "error": "400 Bad Request",
  "message": "Target-Service-Id header is required"
}

400 Bad Request - Invalid service ID:

{
  "error": "400 Bad Request",
  "message": "invalid service ID: no apps matched the request for service: invalid-service"
}