ToIP Alignment
NANDA aligns with the Trust over IP (ToIP) Foundation and the Decentralized Identity Foundation (DIF) Trust Establishment working group to provide interoperable, standards-based trust infrastructure for AI agents.
Trust Framework Model
A Trust Framework defines the governance rules, policies, and standards that participants in a trust ecosystem agree to follow. NANDA registers trust frameworks as metadata records that agents can reference:
Framework Registration
Each framework has a unique framework_id, version, governance URL, and
alignment tag (e.g. toip-tswg, dif-trust-graph).
Pre-Seeded Framework
NANDA ships with the kym-trust-v1 framework pre-seeded — the KnowYourModel Trust
Framework, aligned with ToIP TSWG standards.
Framework Schema
{
"framework_id": "kym-trust-v1",
"name": "KnowYourModel Trust Framework",
"version": "1.0",
"governance_url": "https://knowyourmodel.ai/docs",
"alignment": "toip-tswg"
}Trust Graph
The Trust Graph models directed trust relationships between DIDs (Decentralized Identifiers). Each edge represents a trust assertion from one party to another:
Directed Edges
Each edge has a from_did, to_did, relationship type
(issuer, verifier, peer, endorser), and a trust_level from 0.0 to 1.0.
Path Finding
BFS-based path computation finds the shortest trust chain between two DIDs. Trust is multiplicative along the path — each hop reduces the aggregate trust level.
Evidence & Validity
Edges can reference an evidence_uri (e.g. a VC proof), a framework_id, and optional valid_from / valid_until timestamps.
Relationship Types
| Relationship | Description | Example |
|---|---|---|
issuer | Credential issuer → subject | NANDA node issues VC to agent |
verifier | Verifier trusts issuer | Consumer trusts NANDA node's credentials |
peer | Bidirectional peer trust | Two federated NANDA nodes |
endorser | Third-party endorsement | Audit body endorses agent compliance |
API Endpoints
Trust framework and graph data are accessible via authenticated API endpoints:
GET /api/trust/framework — List all registered frameworks
GET /api/trust/framework?id=kym-trust-v1 — Get specific framework
GET /api/trust/framework/graph?did=did:web:example — Trust edges for a DID
GET /api/trust/framework/graph?from=did:A&to=did:B — Compute trust pathAll endpoints require a valid nanda_ API key via Bearer token authentication.
Standards Alignment
ToIP TSWG
Trust Spanning Working Group — defines the Trust Spanning Protocol for cross-domain trust establishment.
DIF Trust Graph
Joint ToIP/DIF initiative for modeling trust relationships as directed graphs with evidence and attestation.
W3C VC
Verifiable Credentials Data Model v2.0 — the foundational standard for cryptographically verifiable claims.