Attestix

Attestix

Signed identity and evidence for AI agents

Record cryptographically verifiable evidence to support AI governance workflows.
Open-source identity, credentials, compliance automation, and trust scoring.
MCP and REST interfaces, Automated functional tests and Attestix interoperability benchmarks.
Real integrations with LangChain, OpenAI Agents SDK, and CrewAI.

Status: pre-1.0 toolkit; this README describes current main source. Single-maintainer project, community contributions welcome. No independent third-party security audit has been performed yet; deploy with the same diligence you would apply to any pre-1.0 open-source crypto stack.

---

Source and verification status

Published runtime hardening is available in Python attestix 0.4.2 on PyPI. This source also prepares the 0.4.3 website/documentation update; source metadata is not proof of registry publication. The JavaScript offline verifier is also published as npm attestix 0.4.2. Main may contain later changes; compare release notes and pin the version you reviewed. Go and Java 0.4.2 are published. R and Rust have GitHub 0.4.2 releases, while CRAN and crates.io still serve 0.4.1 at this release cutoff.

• Credential verification binds the stated issuer to the supported proof controller. Ambiguous NFC-normalized keys fail before signing or verification.
• Presentation verification requires the caller's expected challenge and domain. A signature alone does not provide replay protection.
• REST use requires an API key by default. The default REST server is single-tenant and rejects non-default tenant headers; a shared API key does not provide cross-tenant authorization.
• JSON updates use the shared storage lock. Protect the local signing key and data directory; test backup restoration, isolation and your selected signer/backend before production.
• workflow_complete describes recorded documentation completion. legal_conformity is not assessed; the deprecated compliant field is a workflow alias. Generated declarations are drafts for provider review.
• Local purge cannot erase external replicas, remote logs, previously shared credentials or third-party backups. Plan historical data and credential migration separately.

Install

# Reviewed release (check release notes before upgrading):
pip install attestix==0.4.2

Since 0.4.0, the supported namespace is the canonical attestix.* namespace. The older flat layout (from services... import, from auth... import, ...) keeps working via thin deprecation shims that emit a DeprecationWarning on first import and are scheduled for removal in v0.5.0. Update imports to from attestix.services... import at your earliest convenience.

CLI

attestix status                          # System overview
attestix init --name MyBot               # Create agent identity
attestix compliance <agent-id>           # Check recorded documentation gaps
attestix verify <agent-id>               # Verify identity cryptographically
attestix audit <agent-id>                # View hash-chained audit trail
attestix credential --list               # List W3C Verifiable Credentials

REST API

pip install 'attestix[api]'
# Configure ATTESTIX_API_KEY in your environment before starting the API.
uvicorn attestix.api.main:app --reload   # Swagger docs at http://localhost:8000/docs

Web Dashboard

pip install streamlit
streamlit run demo/webapp/app.py         # Opens at http://localhost:8501

Quick Demo

python examples/quickstart.py            # Local synthetic workflow

Verify in any language

Attestix credentials use a published canonical-JSON and Ed25519 verification profile. Language-specific verifier repositories share conformance fixtures, but their trust-input and delegation-chain checks differ. Read each verifier README and pin a reviewed version. Cryptographic validity is separate from issuer trust, authorization, revocation and replay policy.

Language	Install	Status
Python	pip install attestix==0.4.2	Published hardening baseline: PyPI 0.4.2
JS / TS	npm install attestix@0.4.2	npm 0.4.2; verifier source (attestix-js)
Go	go get github.com/VibeTensor/attestix-go@v0.4.2	Go module v0.4.2; verifier source (attestix-go)
Rust	cargo add attestix	crates.io 0.4.1; GitHub v0.4.2 source (attestix-rs)
Java	Maven com.vibetensor:attestix:0.4.2	Maven 0.4.2; verifier source (attestix-java)
R	See repository installation instructions	CRAN 0.4.1; GitHub 0.4.2 source (attestix-r)

Every verifier targets the Attestix canonical-JSON profile, which differs from strict RFC 8785, and Ed25519 signatures (RFC 8032) against the shared spec/verify/v1 vectors. Verify in the browser at https://attestix.io/verify, or read the bundle wire-format at https://attestix.io/spec/bundle/v1.

Why Attestix

The EU AI Act has a staged application timeline. The European Commission currently lists 2 December 2027 for specified high-risk use cases and 2 August 2028 for high-risk systems embedded in regulated products. Applicability depends on the system and the operator's role. See the European Commission's current AI Act guidance.

Attestix helps organize evidence; a signature or generated declaration does not establish legal conformity or replace the applicable assessment process.

Attestix provides agent identity, signed credentials, delegation, and offline verification for developers who need portable evidence in their applications. Broader governance platforms also offer APIs, SDKs, agent governance, and compliance workflows; evaluate their current capabilities against your requirements.

Agent identity is fragmenting across walled gardens (Microsoft Entra, AWS AgentCore, ERC-8004). Attestix combines agent identity, AI governance evidence and verifiable credentials in one toolkit.

Attestix fills this gap.

---

Modules

Module	What it does
Identity	Unified Agent Identity Tokens (UAITs) bridging MCP OAuth, A2A, DIDs, and API keys. local data erasure tooling
Agent Cards	Parse, generate, and discover A2A-compatible agent cards
DID	Create and resolve W3C Decentralized Identifiers (did:key, did:web)
Delegation	UCAN-style capability delegation with EdDSA-signed JWT tokens
Reputation	Recency-weighted trust scoring (0.0 - 1.0) with category breakdown
Compliance	EU AI Act risk profiles, conformity assessments (Article 43), Annex V declarations
Credentials	W3C Verifiable Credentials with Ed25519Signature2020 proofs, presentations
Provenance	Training data provenance (Article 10), model lineage (Article 11), hash-chained audit trail (Article 12)
Blockchain	Anchor artifact hashes to Base L2 via Ethereum Attestation Service, Merkle batching

---

Quick Start

As an MCP Server (Claude Code)

Add to your Claude Code config (~/.claude.json):

{
  "mcpServers": {
    "attestix": {
      "type": "stdio",
      "command": "python",
      "args": ["-m", "attestix.main"]
    }
  }
}

Then ask Claude:

"Create an identity for my data analysis agent with capabilities: data_analysis, reporting"

As a Python Library

from attestix.services.identity_service import IdentityService
from attestix.services.compliance_service import ComplianceService
from attestix.services.credential_service import CredentialService

identity_svc = IdentityService()
compliance_svc = ComplianceService()
credential_svc = CredentialService()

# 1. Create an agent identity
agent = identity_svc.create_identity(
    display_name="MyAgent",
    source_protocol="manual",
    capabilities=["data_analysis", "reporting"],
    description="Analyzes quarterly financial data",
    issuer_name="VibeTensor",
    expiry_days=365,
)
agent_id = agent["agent_id"]      # attestix:f9bdb7a94ccb40f1
agent_did = agent["issuer"]["did"]  # did:key:z6Mk...

# 2. Create a compliance profile
profile = compliance_svc.create_compliance_profile(
    agent_id=agent_id,
    risk_category="limited",
    provider_name="VibeTensor",
    intended_purpose="Analyzes quarterly financial data",
)

# 3. Issue a verifiable credential
credential = credential_svc.issue_credential(
    subject_id=agent_id,
    credential_type="AgentIdentityCredential",
    issuer_name="VibeTensor",
    claims={"capabilities": ["data_analysis", "reporting"]},
    expiry_days=365,
)
print(credential["proof"]["type"])  # Ed25519Signature2020

For a complete end-to-end walkthrough covering all 9 modules, run the quickstart:

python examples/quickstart.py

From Source

git clone https://github.com/VibeTensor/attestix.git
cd attestix
pip install -r requirements.txt
python -m attestix.main

---

AI governance evidence workflow

Record a high-risk AI agent documentation workflow for provider review:

1. create_agent_identity        --> UAIT with DID (Ed25519 signed)
2. record_training_data         --> Article 10 data governance
3. record_model_lineage         --> Article 11 technical documentation
4. create_compliance_profile    --> Risk categorization + obligations
5. record_conformity_assessment --> Operator-recorded assessment details
6. generate_declaration_of_conformity --> Annex V declaration + W3C VC
7. create_verifiable_presentation     --> Signed VP for a verifier with a fresh challenge

The current Attestix workflow blocks self-assessment for a profile marked high-risk. This application policy is not a universal determination of the legally applicable assessment route:

record_conformity_assessment(assessment_type="self", ...)
--> ERROR: "High-risk AI systems require third_party conformity assessment"

Full walkthrough: EU AI Act Compliance Guide

---

How It Works

Credentials and presentations carry signatures; audit chains carry integrity hashes. Not every record or external artifact is independently signed:

Artifact	Standard	Signed
Agent Identity (UAIT)	Custom + DID	Ed25519
Verifiable Credential	W3C VC Data Model 1.1	Ed25519Signature2020
Verifiable Presentation	W3C VP	Ed25519Signature2020
Delegation Token	UCAN-style JWT	EdDSA
Draft evidence credential	Attestix documentation profile	Ed25519
Audit Trail	Hash-chained log	SHA-256 chain
Blockchain Anchor	EAS on Base L2	On-chain

Local operation. Core identity and credential operations can use local JSON storage. Remote DID resolution, hosted signers and blockchain integrations require their configured services.

---

Architecture

attestix/                  # Canonical Python package (v0.4.0)
  main.py                  # MCP server entry point (MCP tools)
  cli.py                   # `attestix` console script
  config.py                # Environment-based configuration
  errors.py                # Error handling with JSON logging
  api/                     # FastAPI REST surface
    main.py                # uvicorn entry: `attestix.api.main:app`
    routers/               # REST routers
  auth/
    crypto.py              # Ed25519 key management
    ssrf.py                # SSRF protection for outbound HTTP
  services/
    identity_service.py    # UAIT lifecycle, local data erasure
    agent_card_service.py  # A2A agent card operations
    did_service.py         # DID creation and resolution
    delegation_service.py  # UCAN delegation tokens
    reputation_service.py  # Trust scoring
    compliance_service.py  # Operator-recorded profiles and assessment evidence
    credential_service.py  # W3C VCs and VPs
    provenance_service.py  # Training data, lineage, audit trail
    blockchain_service.py  # Base L2 anchoring via EAS
  storage/                 # Repository seam (file / memory / pg)
  signing/                 # Signer seam (in-process / kms)
  audit/                   # Tamper-evident event chain
  tenancy/                 # Tenant context
  idempotency/             # Stripe-style idempotency keys + middleware
  blockchain/
    merkle.py              # Merkle tree for batch anchoring
  tools/                   # MCP tool definitions (one file per module)

The pre-v0.4.0 flat layout (services/, auth/, storage/, ...) is preserved as deprecation shims at the same paths. They re-export from the canonical attestix.* namespace and emit a DeprecationWarning on first import. The shims are scheduled for removal in v0.5.0.

---

MCP tools

Identity

Tool	Description
create_agent_identity	Create a UAIT from any identity source
resolve_identity	Auto-detect token type and register
verify_identity	Check existence, revocation, expiry, signature
translate_identity	Convert to A2A, DID Document, OAuth, or summary
list_identities	List UAITs with protocol/revocation filters
get_identity	Get full UAIT details
revoke_identity	Mark a UAIT as revoked
purge_agent_data	Remove locally managed records and parseable local backups; external copies need separate handling

Agent Cards

Tool	Description
parse_agent_card	Parse an A2A Agent Card JSON
generate_agent_card	Generate agent.json for hosting
discover_agent	Fetch /.well-known/agent.json from a URL

DID

Tool	Description
create_did_key	Generate ephemeral did:key with Ed25519 keypair
create_did_web	Generate did:web DID Document for self-hosting
resolve_did	Resolve any DID to its DID Document

Delegation

Tool	Description
create_delegation	UCAN-style capability delegation token
verify_delegation	Verify JWT signature, expiry, structure
list_delegations	List delegations by agent and role
revoke_delegation	Revoke a delegation token

Reputation

Tool	Description
record_interaction	Record outcome and update trust score
get_reputation	Get score with category breakdown
query_reputation	Search agents by reputation criteria

Compliance

Tool	Description
create_compliance_profile	Create EU AI Act profile with risk categorization
get_compliance_profile	Retrieve full compliance profile
update_compliance_profile	Update an existing compliance profile
get_compliance_status	Gap analysis: completed vs missing requirements
record_conformity_assessment	Record self or third-party assessment (Article 43)
generate_declaration_of_conformity	Generate Annex V declaration + auto-issue VC
list_compliance_profiles	Filter by risk category and compliance status

Credentials

Tool	Description
issue_credential	Issue W3C VC with Ed25519Signature2020 proof
verify_credential	Check signature, expiry, revocation
verify_credential_external	Verify any VC JSON from an external source
revoke_credential	Revoke a Verifiable Credential
get_credential	Get full VC details
list_credentials	Filter by agent, type, validity
create_verifiable_presentation	Bundle VCs into a signed VP for a verifier
verify_presentation	Verify a VP with embedded credentials

Provenance

Tool	Description
record_training_data	Record training data source (Article 10)
record_model_lineage	Record model chain and metrics (Article 11)
log_action	Log agent action with hash-chained audit trail (Article 12)
get_provenance	Get full provenance record
get_audit_trail	Query audit log with filters

Blockchain

Tool	Description
anchor_identity	Anchor identity hash to Base L2 via EAS
anchor_credential	Anchor credential hash to Base L2 via EAS
anchor_audit_batch	Merkle batch anchor of audit log entries
verify_anchor	Verify an on-chain anchor against local data
get_anchor_status	Get anchoring status for an artifact
estimate_anchor_cost	Estimate gas cost for anchoring

---

Standards Conformance

Public tests and conformance fixtures cover selected signature, canonicalization, credential, delegation and interface behavior. They do not establish universal W3C interoperability, legal conformity, certification or operating acceptance. Consult the test cases and the selected verifier's documented boundaries. Run them yourself:

docker build -f Dockerfile.test -t attestix-bench . && docker run --rm attestix-bench

Standard	What is tested	Tests
RFC 8032 (Ed25519)	4 IETF canonical vectors: key derivation, signature generation (exact match), verification, tamper rejection	18
W3C VC Data Model 1.1	Credential structure, Ed25519Signature2020 proof, mutable field exclusion, VP structure, replay protection	25
W3C DID Core 1.0	did:key and did:web document structure, roundtrip resolution, Ed25519VerificationKey2020	18
UCAN v0.9.0	JWT header (alg/typ/ucv), all payload fields, capability attenuation, expiry enforcement, revocation	18
MCP Protocol	MCP tools registered, 9 modules, async convention, snake_case naming	5
Performance	Ed25519 key gen, JSON canonicalization, sign/verify, identity creation, credential ops	7

Performance

Benchmark results depend on interpreter, hardware, storage and workload. Run the repository benchmarks on your target environment; no static latency figure here is an operating guarantee.

Security

• Ed25519 signatures on all UAITs, VCs, assessments, declarations, and audit entries
• Hash-chained audit trail with SHA-256 for tamper-evident logging
• SSRF protection blocks private IPs, metadata endpoints, and DNS rebinding
• Encrypted key storage with AES-256-GCM when ATTESTIX_KEY_PASSWORD is set
• Private keys never exposed in tool responses
• No external API calls required for core operations

---

Research Paper

Attestix is described in a research paper covering system architecture, cryptographic pipeline, governance evidence workflows, and evaluation with 531 automated tests (440 functional + 91 RFC / W3C conformance benchmarks).

Attestix: A Unified Attestation Infrastructure for Autonomous AI Agents Pavan Kumar Dubasi, VibeTensor Private Limited, 2026.

Citing Attestix

If you use Attestix in your research, please cite:

@article{dubasi2026attestix,
  title     = {Attestix: A Unified Attestation Infrastructure for Autonomous AI Agents},
  author    = {Dubasi, Pavan Kumar},
  year      = {2026},
  url       = {https://github.com/VibeTensor/attestix},
  note      = {Open-source. Apache License 2.0}
}

---

Documentation

Full documentation at attestix.io/docs

Guide	Description
Getting Started	Installation and first identity in 5 minutes
EU AI Act Compliance	Step-by-step compliance workflow
Risk Classification	How to determine your AI system's risk category
Architecture	System design and data flows
API Reference	MCP tools with parameter tables
Integration Guide	LangChain, OpenAI Agents SDK, CrewAI, MCP client
Configuration	Environment variables, storage, Docker
Research Paper	Paper, citation formats, evaluation highlights
Reputation Scoring	Recency-weighted trust scoring and categories
Examples	End-to-end code examples for common workflows

---

Disclaimer

Attestix generates machine-readable, cryptographically signed compliance documentation. It is a documentation and evidence tooling system. It does not replace legal counsel, notified body assessments, or official regulatory submissions. Always consult qualified legal professionals for compliance decisions.

---

Sponsors

Attestix is free and open-source. If you or your organization benefit from it, please consider sponsoring to support continued development, security audits, and infrastructure.

---

Contributing

See CONTRIBUTING.md for development setup and guidelines.

License

Apache License 2.0. See LICENSE.

---

Built by VibeTensor