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Overview

The Credential API provides read-only access to verify user eligibility and query credential information.

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Core Queries

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Get Credential Information

query GetCredential($credId: ID!) {
  credential(id: $credId) {
    id
    name
    description
    credType
    credSource
    chain
    referenceLink
    itemCount
    lastUpdate
    lastSync
    syncStatus
    curatorSpace {
      id
      name
    }
  }
}

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Check User Eligibility

query CheckEligibility($credId: ID!, $address: String!, $campaignId: ID) {
  credential(id: $credId) {
    id
    name
    eligible(address: $address, campaignId: $campaignId)
    credType
    credSource
    syncStatus
    lastSync
  }
}
Variables: 
{
  "credId": "312969464",
  "address": "0x1234567890123456789012345678901234567890",
  "campaignId": "GChdWUjXX3"
}
Response: 
{
  "data": {
    "credential": {
      "id": "312969464",
      "name": "Twitter Follower Verification",
      "eligible": 1,
      "credType": "TWITTER",
      "credSource": "TWITTER_FOLLOW",
      "syncStatus": "SYNCED",
      "lastSync": 1699200000
    }
  }
}
Eligibility Values:
  • 1 - User has the credential
  • 0 - User does not have the credential

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Field Reference

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Key Fields

FieldTypeDescription
idID!Credential’s unique identifier
nameString!Human-readable credential name
credTypeCredType!Credential platform/type
credSourceCredSource!Verification method
eligible(address, campaignId)IntUser eligibility check (0 or 1)
syncStatusSyncStatus!Data synchronization status
itemCountIntTotal number of credential holders

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Credential Types

TypeDescription
TWITTERTwitter account verification
DISCORDDiscord membership verification
EVM_ADDRESSEthereum-compatible addresses
SOLANA_ADDRESSSolana wallet addresses
GITHUBGitHub account verification
EMAILEmail address verification

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Credential Sources

SourceDescription
TWITTER_FOLLOWTwitter follow verification
DISCORD_MEMBERDiscord server membership
CONTRACT_NFT_HOLDERNFT ownership verification
WALLET_BALANCEToken balance requirements
QUIZQuiz completion verification
APICustom API verification

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Sync Status

StatusDescription
SYNCEDData is current and reliable
SYNCINGData is being updated, may be stale

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Integration Patterns

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Basic Verification

curl -X POST https://graphigo-business.prd.galaxy.eco/query \
  -H "Content-Type: application/json" \
  -H "access-token: YOUR_ACCESS_TOKEN" \
  -d '{
    "query": "query CheckEligibility($credId: ID!, $address: String!) { credential(id: $credId) { name eligible(address: $address) syncStatus } }",
    "variables": { "credId": "312969464", "address": "0x..." }
  }'

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Quest-Specific Context

When checking eligibility for a specific quest, include the campaignId parameter: 
eligible(address: $address, campaignId: $campaignId)

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Best Practices

  1. Check Sync Status: Always verify syncStatus is SYNCED before relying on eligibility results
  2. Handle Quest Context: Use campaignId parameter for quest-specific verifications
  3. Cache Results: Cache eligibility results for 5-10 minutes to reduce API calls
  4. Error Handling: Handle invalid credential IDs and network errors gracefully

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Common Errors

ErrorCauseSolution
Credential not foundInvalid credential IDVerify credential ID exists
Address not providedMissing address parameterInclude user address in query
Rate limit exceededToo many requestsImplement retry logic
Invalid access tokenBad/expired tokenRegenerate access token

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Next Steps