# description
A single skill, qualification, or credential held by a candidate. The attested flag and proof_request_url are optional — allowing the schema to function in early-stage ecosystems where VC infrastructure is not yet universal. As VCs become available for specific skills, the proof_request_url can be populated without any schema change. 

# properties.category.description
Broad class of the credential or skill held.

# properties.subtype.description
Specific skill or credential. Examples: "AWS_SAA", "BTECH_CS", "LMV_LICENSE", "Java_SE_11", "CNC_Operator_Level2". 

# properties.level.description
Optional proficiency or qualification level. Examples: "BEGINNER", "PROFESSIONAL", "ADVANCED", "3_YEARS_EXP", "NQF_Level_4". 

# properties.attested.description
Whether this skill entry is backed by a verifiable credential (VC). false = self-declared (no VC yet); true = VC exists and is resolvable via proof_request_url. Employers can discover self-declared skills but know they are unverified. 

# properties.proof_request_url.description
URL of the DeDi proof-request endpoint scoped to this specific credential. Only present when attested = true. An employer BAP can call this endpoint to trigger a Verifiable Presentation (VP) request. The VC payload itself never leaves the holder's wallet — only a signed verification response is returned by the orchestrator. Example: "https://dedi.example.net/proof-request/did:ex:123/skill/AWS_SAA" 