generated: '2026-09-19'
method: searched
source: https://agent-economy.kgninja.dev/.well-known/agent-skills/index.json
provenance: provider-published
note: >-
  KG-NINJA publishes its own Agent Skill and a discovery index for it (Agent Skills discovery v0.2.0,
  $schema https://schemas.agentskills.io/discovery/0.2.0/schema.json). The SKILL.md was fetched verbatim
  from the URL the index names and its SHA-256 (07b5b311be22f21392f0a704c2700c99d044d48026b83042ff66042c869cb0bf)
  matches the digest the index publishes. Nothing here was generated by API Evangelist. Every operation the
  skill names exists in openapi/kgninja-dev-openapi.json: validateVerificationRequest (/validate-request),
  quoteVerifyEvidence (/quote), verifyEvidence (/verify-evidence), getVerificationRecipes, getEvidenceJwks;
  and every MCP tool it names is in mcp/kgninja-dev-mcp-tools.json.
skills:
- file: kgninja-dev-verify-json-evidence.md
  name: verify-json-evidence
  description: >-
    Purchase deterministic assertions over supplied JSON and verify the Ed25519-signed result. Use when an
    agent needs a bounded, auditable JSON check through MCP or HTTP with x402 payment.
  api: openapi/kgninja-dev-openapi.json
  operations: [getVerificationRecipes, validateVerificationRequest, quoteVerifyEvidence, verifyEvidence, getEvidenceJwks]
  mcp_tools: [describe_verify_evidence, quote_verify_evidence, prepare_verify_evidence_purchase, verify_evidence]
  source: https://agent-economy.kgninja.dev/.well-known/agent-skills/verify-json-evidence/SKILL.md
  digest: sha256:07b5b311be22f21392f0a704c2700c99d044d48026b83042ff66042c869cb0bf
  digest_verified: true
  author: kgninja
  version: 0.4.3
  frontmatter_fields: [name, description, compatibility, metadata.author, metadata.version, metadata.service-url]