Issue Verifiable Credentials to AI Agent

Issue a Credential to an AI Agent using cheqd's APIs.

Once you have created your Trust Registry for the accreditation and authorisation of the organisations in your ecosystem, you can issue a credential to your AI Agent.

Step 1: Create DID for AI Agent

Each AI Agent must have its own DID to securely receive and manage credentials and accreditations. This identification allows the AI Agent to cryptographically control these credentials and accreditations.

Create AI Agent DID

Create a W3C conformant DID on cheqd using our MCP Server.

Step 2: Choose Schema for Credential

As described in the previous tutorial, you should have already designed and published schemas for your AI Agent ecosystem.

You must decide which schema to use for the credential you are issuing to the AI Agent. You should make sure that you, as an issuer, are accreditedToAttest for the specific credential schema you want to use.

Step 3: Compile Credential Request

To ensure the AI Agent's credentials are demonstrably verifiable to a root of trust, certain steps are essential in the credential issuance process.

For subjectDid use the DID created in Step 1.

An example of the request format is below:

{
  "issuerDid": "did:cheqd:testnet:0a35d559-00ff-41b6-81ad-f64faa522771", // DID of Trusted Issuer
  "subjectDid": "did:cheqd:testnet:a7e8bf7c-9d97-4b1e-a7bb-43a6754aafbf", // DID of AI Agent
  "attributes": {
      "aiAgentName": "ChatGPT-4 Turbo",
      "aiAgentVersion": "4.0-turbo",
      "model": "GPT-4 Turbo",
      "modelVersion": "4.0",
      "contextWindow": 128000,
      "temperature": 0.7,
      "topK": 40,
      "topP": 0.9,
      "maxTokens": 4096,
      "fineTuned": false,
      "fineTuningDetails": null,
      "safetyRating": "ISO 42001 Certified",
      "evaluationMetrics": [
        "BLEU-4",
        "ROUGE-L",
        "F1 Score: 92.5%"
      ],
      "certificationAuthority": "AI Ethics Board",
      "validUntil": "2026-03-28T12:00:00Z"
  },
  "type": [
    "VerifiableCredential",
    "VerifiableAttestation",
    "AIAgentAuthorisation"
  ],
  "format": "jwt",
  "credentialSchema": "https://resolver.cheqd.net/1.0/identifiers/did:cheqd:testnet:c6630f1e-9248-4af6-b7ac-5bcaf646f213?resourceName=AIAgentAuthorisation&resourceType=JSONSchemaValidator2020",
    "termsOfUse": {
      "type": "AttestationPolicy",
      "parentAccreditation": "did:cheqd:testnet:0a35d559-00ff-41b6-81ad-f64faa522771?resourceName=AccreditationToAttest&resourceType=VerifiableAccreditationToAttest",
      "rootAuthorisation": "did:cheqd:testnet:c6630f1e-9248-4af6-b7ac-5bcaf646f213?resourceName=OrganisationAuthorisationForAIAgents&resourceType=VerifiableAuthorisationForTrustChain"
    }
}

The table below breaks down what components are required and why they are needed:

Field

Required?

Description

issuerDid

Yes

The Issuer DID issuing the credential to the AI Agent

subjectDid

Yes

The DID of the AI Agent

attributes

Yes

The specific permissions, scopes or attributes you want to issue to the AI Agent

type

Yes

The type of credential. This should match the types the issuer is accredited to issue,

format

Defaults to VC JWT

credentialSchema

Yes

The credential schema matching the attributes of the credential

termsOfUse

Yes

Pointers to the accreditations of the issuer

type

Yes

Must be attestationPolicy

parentAccreditation

Yes

Must point to the accreditation of the Issuer, matching the credential type and schema

rootAuthorisation

Yes

Must point to the root authorisation that has accredited DIDs higher in the trust chain.

Step 4: Issue Verifiable Credential to AI Agent

Issue the compiled credential using the cheqd studio API enpoint below:

Issue a Verifiable Credential

post

This endpoint issues a Verifiable Credential. As input it takes the list of issuerDid, subjectDid, attributes, and other parameters of the credential to be issued.

Authorizations

Body

Input fields for the creating a Verifiable Credential.

issuerDidstringRequired

DID of the Verifiable Credential issuer. This needs to be a did:cheqd DID.

Example: did:cheqd:testnet:7bf81a20-633c-4cc7-bc4a-5a45801005e0

subjectDidstringRequired

DID of the Verifiable Credential holder/subject. This needs to be a did:key DID.

Example: did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK

attributesobjectRequired

JSON object containing the attributes to be included in the credential.

Example: {"name":"Bob","gender":"male"}

@contextstring[]Optional

Optional properties to be included in the @context property of the credential.

Example: ["https://schema.org/schema.jsonld","https://veramo.io/contexts/profile/v1"]

typestring[]Optional

Optional properties to be included in the type property of the credential.

Example: ["Person"]

expirationDatestring · date-timeOptional

Optional expiration date according to the <a href=https://www.w3.org/TR/vc-data-model/#expiration> VC Data Model specification.

Example: 2023-06-08T13:49:28.000Z

formatstring · enumOptional

Format of the Verifiable Credential. Defaults to VC-JWT.

Example: jwtPossible values:

termsOfUseobject[]Optional

Terms of use can be utilized by an issuer or a holder to communicate the terms under which a verifiable credential was issued.

Example:

{"type":"IssuerPolicy","id":"http://example.com/policies/credential/4","profile":"http://example.com/profiles/credential","prohibition":[{"assigner":"https://example.edu/issuers/14","assignee":"AllVerifiers","target":"http://example.edu/credentials/3732","action":["Archival"]}]}

refreshServiceobject[]Optional

RefreshService property MUST be one or more refresh services that provides enough information to the recipient's software such that the recipient can refresh the verifiable credential.

Example: {"type":"ManualRefreshService2018","id":"https://example.edu/refresh/3732"}

evidenceobject[]Optional

Evidence property MUST be one or more evidence schemes providing enough information for a verifier to determine whether the evidence gathered by the issuer meets its confidence requirements for relying on the credential.

Example:

{"type":["DocumentVerification"],"id":"https://example.edu/evidence/f2aeec97-fc0d-42bf-8ca7-0548192d4231","verifier":"https://example.edu/issuers/14","evidenceDocument":"DriversLicense","subjectPresence":"Physical","documentPresence":"Physical","licenseNumber":"123AB4567"}

Responses

200

The request was successful.

application/json

400

A problem with the input fields has occurred. Additional state information plus metadata may be available in the response body.

401

Access token is missing or invalid

500

An internal error has occurred. Additional state information plus metadata may be available in the response body.

post

POST /credential/issue HTTP/1.1
Host: 
x-api-key: YOUR_API_KEY
Content-Type: application/x-www-form-urlencoded
Accept: */*
Content-Length: 364

"issuerDid='did:cheqd:testnet:7bf81a20-633c-4cc7-bc4a-5a45801005e0'&subjectDid='did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK'&attributes={'gender':'male','name':'Bob'}&@context=['https://schema.org']&type=['Person']&format='jwt'&credentialStatus={'statusPurpose':'revocation','statusListName':'employee-credentials','statusListIndex':10}"

{
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://schema.org",
    "https://veramo.io/contexts/profile/v1"
  ],
  "credentialSubject": {
    "gender": "male",
    "id": "did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK",
    "name": "Bob"
  },
  "credentialStatus": {
    "id": "https://resolver.cheqd.net/1.0/identifiers/did:cheqd:testnet:7c2b990c-3d05-4ebf-91af-f4f4d0091d2e?resourceName=cheqd-suspension-1&resourceType=StatusList2021Suspension#20",
    "statusIndex": 20,
    "statusPurpose": "suspension",
    "type": "StatusList2021Entry"
  },
  "issuanceDate": "2023-06-08T13:49:28.000Z",
  "issuer": {
    "id": "did:cheqd:testnet:7bf81a20-633c-4cc7-bc4a-5a45801005e0"
  },
  "proof": {
    "jwt": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJkaWQ6Y2hlcWQ6dGVzdG5ldDo3YmY4MWEyMC02MzNjLTRjYzctYmM0YS01YTQ1ODAxMDA1ZTAiLCJuYmYiOjE2ODYyMzIxNjgsInN1YiI6ImRpZDprZXk6ejZNa2hhWGdCWkR2b3REa0w1MjU3ZmFpenRpR2lDMlF0S0xHcGJubkVHdGEyZG9LIiwidmMiOnsiQGNvbnRleHQiOlsiaHR0cHM6Ly93d3cudzMub3JnLzIwMTgvY3JlZGVudGlhbHMvdjEiLCJodHRwczovL3NjaGVtYS5vcmciLCJodHRwczovL3ZlcmFtby5pby9jb250ZXh0cy9wcm9maWxlL3YxIl0sImNyZWRlbnRpYWxTdWJqZWN0Ijp7ImdlbmRlciI6Im1hbGUiLCJuYW1lIjoiQm9iIn0sInR5cGUiOlsiVmVyaWZpYWJsZUNyZWRlbnRpYWwiLCJQZXJzb24iXX19.wMfdR6RtyAZA4eoWya5Aw97wwER2Cm5Guk780Xw8H9fA3sfudIJeLRLboqixpTchqSbYeA7KbuCTAnLgXTD_Cg",
    "type": "JwtProof2020"
  },
  "type": [
    "VerifiableCredential",
    "Person"
  ]
}

(Optional) Step 5: Publish Credential Response as a DID-Linked Resource

The Issuer, after issuing the credential to the AI Agent, may publish the response (the fully formatted verifiable credential) as a DID-Linked Resource.

The response format should look like the following example, including a proof (signed by the issuer).

{
  "credentialSubject": {
    "aiAgentName": "ChatGPT-4 Turbo",
    "aiAgentVersion": "4.0-turbo",
    "model": "GPT-4 Turbo",
    "modelVersion": "4.0",
    "contextWindow": 128000,
    "temperature": 0.7,
    "topK": 40,
    "topP": 0.9,
    "maxTokens": 4096,
    "fineTuned": false,
    "fineTuningDetails": null,
    "safetyRating": "ISO 42001 Certified",
    "evaluationMetrics": [
      "BLEU-4",
      "ROUGE-L",
      "F1 Score: 92.5%"
    ],
    "certificationAuthority": "AI Ethics Board",
    "validUntil": "2026-03-28T12:00:00Z",
    "id": "did:cheqd:testnet:a7e8bf7c-9d97-4b1e-a7bb-43a6754aafbf"
  },
  "issuer": {
    "id": "did:cheqd:testnet:0a35d559-00ff-41b6-81ad-f64faa522771"
  },
  "type": [
    "VerifiableCredential",
    "VerifiableAttestation",
    "AIAgentAuthorisation"
  ],
  "termsOfUse": {
    "type": "AttestationPolicy",
    "parentAccreditation": "did:cheqd:testnet:0a35d559-00ff-41b6-81ad-f64faa522771?resourceName=AccreditationToAttest&resourceType=VerifiableAccreditationToAttest",
    "rootAuthorisation": "did:cheqd:testnet:c6630f1e-9248-4af6-b7ac-5bcaf646f213?resourceName=OrganisationAuthorisationForAIAgents&resourceType=VerifiableAuthorisationForTrustChain"
  },
  "credentialSchema": "https://resolver.cheqd.net/1.0/identifiers/did:cheqd:testnet:c6630f1e-9248-4af6-b7ac-5bcaf646f213?resourceName=AIAgentAuthorisation&resourceType=JSONSchemaValidator2020",
  "@context": [
    "https://www.w3.org/2018/credentials/v1"
  ],
  "issuanceDate": "2025-04-04T02:43:52.000Z",
  "proof": {
    "type": "JwtProof2020",
    "jwt": "eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.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_cmVzb3VyY2VOYW1lPUFJQWdlbnRBdXRob3Jpc2F0aW9uJnJlc291cmNlVHlwZT1KU09OU2NoZW1hVmFsaWRhdG9yMjAyMCJ9LCJzdWIiOiJkaWQ6Y2hlcWQ6dGVzdG5ldDphN2U4YmY3Yy05ZDk3LTRiMWUtYTdiYi00M2E2NzU0YWFmYmYiLCJuYmYiOjE3NDM3MzQ2MzIsImlzcyI6ImRpZDpjaGVxZDp0ZXN0bmV0OjBhMzVkNTU5LTAwZmYtNDFiNi04MWFkLWY2NGZhYTUyMjc3MSJ9.z9xTp5dSMACTLhrAsO-RBjcmaJJvWHqD6_78FTjaOkBroAMS0f8NlvpIrC7CGojkzCv_T8M_VBexzXU9I8JKAg"
  }
}

You can follow the tutorial below to publish your issued credential as a DID-Linked Resource. Generally we suggest the resourceType of VerifiableAttestation for credentials issued to AI Agents.

Create DID-Linked Resource

Link resources such as schemas to your DID, publishing as a DID-Linked Resource.

This will store the schemas securely on the cheqd Network, where they can be fetched using DID URLs.

Step 5: Provision Verifiable Credential into AI Agent using MCP server

To complete the setup of your AI Agent trust registry and its associated credential, the final step is to provision this credential directly into the AI Agent's wallet using our MCP Server. Follow the tutorial below to finalize your setup!

Provision Credential to AI Agent

Once you have issued your credential and have the JWT, you can provision this credential directly to the AI Agent using our MCP server.

Last updated 2 months ago

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