Channel	Use when	Command
Stable npm	Default production-style consumption of the stable public package.	`npm install @brainai/satp-client@2.0.1`
Release candidate npm	Validating the reviewed rc package before promotion or producing reproducible rc manifests.	`npm install @brainai/satp-client@2.0.2-rc.0`
Release candidate tag	Quick rc opt-in where a moving dist-tag is acceptable.	`npm install @brainai/satp-client@rc`
Reviewed Git commit	PR coordination or source-review installs tied to an exact SATP commit.	`npm install git+https://github.com/brainAI-bot/satp.git#<SATP_COMMIT>`

The npm latest tag still resolves to @brainai/satp-client@2.0.1. Historical rc-tag readback may still show the older 0.1.0-rc.0 package until the rc channel is promoted. The reviewed RC-S6 artifact in this source tree is @brainai/satp-client@2.0.2-rc.0; downstream apps that need reproducible manifests should pin that exact version after promotion instead of relying on the moving @rc tag.

For stable consumer installs, pin the current published npm package:

npm install @brainai/satp-client@2.0.1

For exact rc validation:

npm install @brainai/satp-client@2.0.2-rc.0

For short-lived rc opt-in:

npm install @brainai/satp-client@rc

For branch-only development or PR review, pin an explicit SATP Git commit:

npm install git+https://github.com/brainAI-bot/satp.git#<SATP_COMMIT>

The old 0.0.0-extraction label was extraction-branch metadata and is not the current consumer package. Do not treat branch-only Git installs as npm latest.

Mainnet program IDs are intentionally not enabled in this release candidate. Constructors and helpers fail closed for network: 'mainnet' until an approved mainnet decision packet provides production program IDs.

Runtime dependency: @solana/web3.js ^1.98.4

Quick Start

const { SATPV3SDK } = require('@brainai/satp-client');

// Initialize (devnet by default)
const sdk = new SATPV3SDK({ network: 'devnet' });

// Check if an agent has an identity
const exists = await sdk.hasIdentity('brainChain');
console.log(exists); // true

// Read a Genesis Record
const record = await sdk.getGenesisRecord('brainChain');
console.log(record.agentName, record.category, record.isActive);

// Build a transaction (unsigned — sign with your wallet)
const tx = await sdk.buildCreateIdentity(creatorPubkey, 'myAgent', {
  agentName: 'My Agent',
  description: 'An AI agent on Solana',
  category: 'assistant',
  capabilities: ['chat', 'code'],
  metadataUri: 'https://example.com/meta.json',
});
// Sign and send tx with your wallet...

Architecture

┌─────────────────────────────────────────────────────────────────┐
│                        SATP V3 SDK                              │
├─────────────┬──────────────┬──────────────┬─────────────────────┤
│ Identity    │ Reviews      │ Attestations │ Escrow              │
│ (20 methods)│ (7 methods)  │ (3 methods)  │ (10 methods)        │
├─────────────┼──────────────┼──────────────┤                     │
│ Reputation  │ Validation   │ Migration    │                     │
│ (1 method)  │ (1 method)   │ (1 method)   │                     │
├─────────────┴──────────────┴──────────────┴─────────────────────┤
│ PDA Derivation  │  Borsh Serialization  │  RPC Helpers          │
└─────────────────┴───────────────────────┴───────────────────────┘

Programs & Program IDs

Program	Devnet	Description
`identity_v3`	`GTppU4E44BqXTQgbqMZ68ozFzhP1TLty3EGnzzjtNZfG`	Agent identity, names, wallets, face/birth
`reviews_v3`	`r9XX4frcqxxAZ6Au9V5PA3EAxs1zoNckqLLmoSRcNr4`	Peer reviews with 1-5 star ratings
`attestations_v3`	`6Xd1dAQJPvQRJ4Ntr6LtPTjDjPUZ8nfnmYLZaZ2DtrdD`	Third-party attestations & proofs
`reputation_v3`	`2Lz7KzMvKdrGeAuS8WPHu7jK2yScrnKVgacpYVEuDjkJ`	Weighted reputation scoring (CPI → identity)
`validation_v3`	`6rYRiCYidJYV7QvKrzKGgNu4oMh6BAvynked69R7xMbV`	Validation level computation (CPI → identity)
`escrow_v3`	`B1Se8SPx7GLUisa4LYeXY1tDZy5TviJrsV2yMLgqUXmg`	SOL escrow for agent jobs

API Reference

Read-only Trust Packet Helpers

buildSatpTrustPacket(opts) creates a deterministic, offline trust packet for consumer preflight and release-packet review. It uses the same inputs as prepareIdentityAttestationRequest, then includes the derived program IDs, Genesis PDA, attestation PDA, request hash, and the unsigned request object. The packet is intentionally read-only: flags.signingRequired, flags.transactionRequired, flags.writesRequired, and flags.livePaymentRequired are all false; instructions and signers are empty; and transaction is null.

const {
  buildSatpTrustPacket,
  validateSatpTrustPacket,
} = require('@brainai/satp-client');

const trustPacket = buildSatpTrustPacket({
  subjectWallet: '11111111111111111111111111111111',
  agentId: 'brainChain',
  claimType: 'identity',
  metadataHash: '93d122f8879fe87c186c10a00db8fbc80a73cecd2ede44b9ffa6410be3c2b805',
  network: 'devnet',
});

const validation = validateSatpTrustPacket(trustPacket);
if (!validation.ok) throw new Error(validation.errors.join('; '));

validateSatpTrustPacket(packet) returns { ok, errors }. Validation requires packetType: 'satp-trust-packet' and mode: 'offline-readonly-trust-packet', rejects changed read-only flags, and re-derives the expected packet so tampered PDA, program, request, or hash fields surface as explicit errors.

x402 Discovery Evidence Lookup Helpers

parseX402DiscoveryMetadata(input), buildX402EvidenceLookup(input, opts), and buildRuntimePolicyActionDescriptorFromX402Discovery(input, opts) map x402 discovery metadata into SATP runtime policy evidence lookup data. The helpers are read-only: x402 payment metadata can identify where evidence may be fetched, but it is discovery/evidence lookup only and never authorizes SATP action execution, spending, live payment, signing, transactions, or host policy bypass.

Run the offline example:

node packages/satp-client/examples/x402-discovery-evidence-lookup.js

The example parses discovery metadata, builds an evidence lookup descriptor, and builds a runtime policy action descriptor. It asserts X402_PAYMENT_IS_NOT_ACTION_AUTHORIZATION plus paymentAuthorization: false, actionAuthorization: false, spendAuthorized: false, and livePaymentRequired: false.

Wallet-Control Challenge Helpers

buildWalletControlChallenge(opts) creates a canonical, offline challenge that binds an agent ID to a Solana wallet. It derives the SATP V3 Genesis PDA and linked-wallet PDA from agentId, wallet, and network, includes a nonce and expiry, and returns plain JSON. It does not connect to RPC, read keypairs, create transactions, sign, send, deploy, or mutate chain state.

canonicalWalletControlChallenge(challenge) returns the exact UTF-8 message a wallet signs. verifyWalletControlChallengeSignature(opts) verifies a 64-byte Ed25519 signature against the challenge wallet and fails closed for mismatched wallets, signatures, agent IDs, PDAs, domain, audience, expiry, and replayed nonces supplied by your replay cache.

const {
  buildWalletControlChallenge,
  canonicalWalletControlChallenge,
  verifyWalletControlChallengeSignature,
} = require('@brainai/satp-client');

const challenge = buildWalletControlChallenge({
  agentId: 'brainChain',
  wallet: walletPublicKey,
  audience: 'my-service',
  nonce: crypto.randomBytes(16).toString('hex'),
});

// Ask the wallet to sign this exact canonical string.
const message = canonicalWalletControlChallenge(challenge);

const verification = verifyWalletControlChallengeSignature({
  challenge,
  signature,
  expectedWallet: walletPublicKey,
  expectedAgentId: 'brainChain',
  expectedAudience: 'my-service',
  usedNonces: replayCache,
});
if (!verification.ok) throw new Error(verification.errors.join('; '));

Constructor

const sdk = new SATPV3SDK({ network, rpcUrl });
// network: 'devnet' (default). 'mainnet' fails closed until approved IDs exist.
// rpcUrl: optional custom RPC endpoint

Identity Methods (20)

Method	Description
`buildCreateIdentity(creator, agentId, meta)`	Create a new agent identity (Genesis Record)
`buildBurnToBecome(authority, agentId, faceImage, faceMint, faceBurnTx)`	Burn NFT to set agent's face (birth ritual)
`buildUpdateIdentity(authority, agentId, updates)`	Update mutable fields (description, capabilities, metadata)
`buildProposeAuthority(authority, agentId, newAuthority)`	Propose authority transfer (2-step)
`buildAcceptAuthority(newAuthority, agentId)`	Accept proposed authority transfer
`buildCancelAuthorityTransfer(authority, agentId)`	Cancel pending authority transfer
`buildRegisterName(authority, agentId, name)`	Register a unique name for an agent
`buildReleaseName(authority, agentId, name)`	Release a registered name
`buildLinkWallet(authority, agentId, wallet, chain, label)`	Link an external wallet to identity
`buildUnlinkWallet(authority, agentId, wallet)`	Unlink an external wallet
`buildInitMintTracker(authority, agentId)`	Initialize NFT mint tracker
`buildRecordMint(authority, agentId)`	Record an NFT mint event
`buildDeactivateIdentity(authority, agentId)`	Deactivate an identity
`buildReactivateIdentity(authority, agentId)`	Reactivate a deactivated identity
`getGenesisRecord(agentId)`	Read a Genesis Record from chain
`hasIdentity(agentId)`	Check if an agent has an identity
`getEscrowPDA(client, description, nonce)`	Derive escrow PDA (sync)
`buildMigrateV2ToV3(v2Authority, agentId, meta)`	Migrate from V2 to V3 identity

Genesis Record Fields

const record = await sdk.getGenesisRecord('brainChain');
// Returns:
{
  agentIdHash: string,     // SHA-256 of agent_id
  agentName: string,       // Display name
  description: string,     // Agent description
  category: string,        // e.g. "developer", "assistant"
  capabilities: string[],  // e.g. ["solana", "code"]
  metadataUri: string,     // Off-chain metadata URL
  faceImage: string,       // Face image URL (after birth)
  faceMint: string,        // NFT mint address (after birth)
  faceBurnTx: string,      // Burn transaction signature
  genesisRecord: number,   // Unix timestamp of birth
  isBorn: boolean,         // Whether agent has completed birth ritual
  isActive: boolean,       // Whether identity is active
  authority: string,       // Current authority pubkey
  pendingAuthority: string | null,
  reputationScore: number, // CPI-updated reputation
  validationLevel: number, // CPI-updated validation
  createdAt: number,       // Unix timestamp
  updatedAt: number,       // Unix timestamp
}

Reviews Methods (7)

Method	Description
`buildInitReviewCounter(payer, agentId)`	Initialize review counter for an agent
`buildCreateReview(reviewer, agentId, rating, text, metadata, opts)`	Create a 1-5 star review
`buildCreateReviewWithSelfCheck(reviewer, agentId, rating, text, metadata)`	Create review with self-review prevention
`buildUpdateReview(reviewer, reviewPDA, updates)`	Update an existing review
`buildDeleteReview(reviewer, reviewPDA)`	Soft-delete a review
`getReview(agentId, reviewer)`	Read a review from chain
`getReviewCount(agentId)`	Get total review count for an agent

// Create a review
const tx = await sdk.buildCreateReview(
  reviewerPubkey,
  'brainChain',      // agent being reviewed
  5,                 // rating (1-5)
  'Excellent Solana dev',
  'metadata',
  { category: 'development' }
);

Attestations Methods (3)

Method	Description
`buildCreateAttestation(issuer, agentId, type, proofData, expiresAt)`	Issue an attestation
`buildVerifyAttestation(issuer, attestationPDA)`	Mark attestation as verified
`buildRevokeAttestation(issuer, attestationPDA)`	Revoke an attestation

// Issue a KYC attestation
const tx = await sdk.buildCreateAttestation(
  issuerPubkey,
  'brainChain',
  'kyc',             // attestation type
  'proof-hash-here',
  Math.floor(Date.now()/1000) + 86400 * 365 // expires in 1 year
);

Reputation & Validation Methods (2)

Method	Description
`buildRecomputeReputation(caller, agentId, reviewAccounts)`	Recompute reputation score from reviews (CPI → identity)
`buildRecomputeLevel(caller, agentId, attestationAccounts)`	Recompute validation level from attestations (CPI → identity)

These use Cross-Program Invocation to update fields directly on the Genesis Record.

Escrow Methods (10)

App-agnostic escrow builders for downstream applications that need unsigned SATP escrow transactions. Product-specific marketplace records, fees, job workflow, moderation, and display copy stay in the consuming application.

Method	Description
`buildCreateEscrow(client, agentWallet, agentId, amount, description, deadline, nonce, opts)`	Create SOL escrow for a job
`buildSubmitWork(agent, escrowPDA, workProof)`	Agent submits work proof
`buildEscrowRelease(client, agent, escrowPDA)`	Client releases full payment
`buildPartialRelease(client, agent, escrowPDA, amount)`	Client releases partial payment
`buildCancelEscrow(client, escrowPDA)`	Cancel escrow (refund client)
`buildRaiseDispute(signer, escrowPDA, reason)`	Raise a dispute
`buildResolveDispute(arbiter, agent, client, escrowPDA, agentAmt, clientAmt)`	Arbiter resolves dispute
`buildExtendDeadline(client, escrowPDA, newDeadline)`	Extend job deadline
`buildCloseEscrow(client, escrowPDA)`	Close completed/cancelled escrow (reclaim rent)
`getEscrow(escrowPDA)`	Read escrow state from chain

Escrow Lifecycle

Created → WorkSubmitted → Released (full or partial)
   ↓           ↓              ↓
Cancelled   Disputed     Closed (rent reclaimed)
               ↓
          Resolved (split)
               ↓
            Closed

// Create an escrow (0.5 SOL for a generic work agreement)
const tx = await sdk.buildCreateEscrow(
  clientPubkey,
  agentWallet,
  'brainChain',
  0.5 * 1e9,        // lamports
  'Complete agreed work',
  Math.floor(Date.now()/1000) + 86400 * 7, // 7 day deadline
  0,                 // nonce (for multiple escrows with same description)
  { arbiter: arbiterPubkey }
);

PDA Helpers (exported from `v3-pda.js`)

const {
  hashAgentId,                  // SHA-256 hash of agent_id string
  hashName,                     // SHA-256 hash of name string
  getGenesisPDA,                // [b"genesis_record", agent_id_hash]
  getNameRegistryPDA,           // [b"name_registry_v3", name_hash]
  getLinkedWalletPDA,           // [b"linked_wallet_v3", agent_id_hash, wallet]
  getV3MintTrackerPDA,          // [b"mint_tracker_v3", agent_id_hash]
  getV3ReviewPDA,               // [b"review_v3", agent_id_hash, reviewer]
  getV3ReviewCounterPDA,        // [b"review_counter_v3", agent_id_hash]
  getV3AttestationPDA,          // [b"attestation_v3", agent_id_hash, issuer, type_hash]
  getV3ReputationAuthorityPDA,  // [b"reputation_authority", agent_id_hash]
  getV3ValidationAuthorityPDA,  // [b"validation_authority", agent_id_hash]
  getV3EscrowPDA,               // [b"escrow_v3", client, desc_hash, nonce_le]
  getV3ProgramIds,              // Returns all 6 program IDs for network
} = require('@brainai/satp-client/src/v3-pda');

Escrow SDK Utilities (exported from `v3-sdk.js`)

const {
  deriveEscrowPda,    // Derive escrow PDA from params
  descriptionHash,    // SHA-256 hash of description string
  EscrowStatus,       // Enum: { Active: 0, WorkSubmitted: 1, Released: 2, Cancelled: 3, Disputed: 4, Resolved: 5 }
  escrowStatusLabel,  // Convert status number to human-readable string
  escrowRemaining,    // Calculate remaining escrow balance
  isEscrowExpired,    // Check if escrow has passed deadline
} = require('@brainai/satp-client/src/v3-sdk');

Transaction Pattern

All build* methods return an unsigned Transaction object. Your application is responsible for:

Setting recentBlockhash and feePayer
Signing with the appropriate wallet
Sending to the network

const tx = await sdk.buildCreateIdentity(wallet.publicKey, 'myAgent', { ... });
tx.recentBlockhash = (await connection.getLatestBlockhash()).blockhash;
tx.feePayer = wallet.publicKey;
tx.sign(wallet);
const sig = await connection.sendRawTransaction(tx.serialize());
await connection.confirmTransaction(sig);

Consumer APIs

SATP core does not define or host an HTTP API. Downstream applications may wrap the SDK with their own read APIs, but those routes are consumer-owned adapters and must not be treated as SATP protocol authority.

Testing

# Unit tests (101)
node test-v3.js

# Devnet integration tests (16)
node test-v3-devnet.js

# CPI integration tests (35)
cd .. && node tests/devnet-cpi-integration.js

# Release-safety defaults and mainnet fail-closed checks
node test-release-safety.js

Network Configuration

// Devnet (default)
const sdk = new SATPV3SDK();

// Explicit devnet
const sdk = new SATPV3SDK({ network: 'devnet' });

// Custom RPC
const sdk = new SATPV3SDK({ rpcUrl: 'https://my-rpc.example.com' });

// Mainnet currently fails closed until approved program IDs are configured
assert.throws(() => new SATPV3SDK({ network: 'mainnet' }));

Borsh Deserialization Helpers (v3.6.0)

Zero-dependency Borsh deserialization for all 8 SATP V3 account types. Decode raw on-chain data without the borsh library.

Supported Account Types

Account	Program	Deserializer
GenesisRecord	Identity V3	`deserializeGenesisRecord(data)`
LinkedWallet	Identity V3	`deserializeLinkedWallet(data)`
MintTracker	Identity V3	`deserializeMintTracker(data)`
NameRegistry	Identity V3	`deserializeNameRegistry(data)`
Review	Reviews V3	`deserializeReview(data)`
ReviewCounter	Reviews V3	`deserializeReviewCounter(data)`
Attestation	Attestations V3	`deserializeAttestation(data)`
EscrowV3	Escrow V3	`deserializeEscrowV3(data)`

Usage: Typed Deserialization

const { deserializeGenesisRecord, deserializeAttestation } = require('@brainai/satp-client');
const { Connection, PublicKey } = require('@solana/web3.js');

const conn = new Connection('https://api.devnet.solana.com');

// Fetch raw account and deserialize
const acct = await conn.getAccountInfo(new PublicKey('...'));
const genesis = deserializeGenesisRecord(acct.data);
console.log(genesis.agentName, genesis.reputationScore, genesis.isBorn);

Usage: Auto-detect Account Type

const { deserializeAccount } = require('@brainai/satp-client');

// Automatically detects type from 8-byte Anchor discriminator
const { type, data } = deserializeAccount(acct.data);
console.log(type);  // "GenesisRecord" | "Attestation" | "EscrowV3" | ...
console.log(data);  // Fully parsed object

Usage: Batch Deserialization (getProgramAccounts)

const { deserializeBatch, DISCRIMINATORS } = require('@brainai/satp-client');

const accounts = await conn.getProgramAccounts(REVIEWS_PROGRAM_ID);
const reviews = deserializeBatch(accounts, 'Review');
// [{ pubkey: "...", type: "Review", data: { agentId, rating, ... } }, ...]

Usage: BorshReader (Custom Deserialization)

const { BorshReader } = require('@brainai/satp-client');

// Low-level reader for custom account layouts
const r = new BorshReader(acct.data);
r.skipDiscriminator();           // skip 8-byte Anchor discriminator
const hash = r.readFixedBytes32(); // [u8; 32]
const name = r.readString();     // Borsh String
const items = r.readVecString(); // Vec<String>
const pk = r.readPubkeyBase58(); // Pubkey → base58
const opt = r.readOptionI64();   // Option<i64> → number | null

Discriminator Utilities

const { isAccountType, getAccountDiscriminator, DISCRIMINATORS } = require('@brainai/satp-client');

// Check account type before deserializing
if (isAccountType(acct.data, 'EscrowV3')) {
  const escrow = deserializeEscrowV3(acct.data);
}

// Get discriminator for filtering
const disc = getAccountDiscriminator('Attestation'); // 8-byte Buffer
// Use with getProgramAccounts memcmp filter

Security

All transactions are returned unsigned — the SDK never holds private keys
PDA derivation is deterministic and verified against on-chain seeds
CPI boundaries enforce program-level authorization
Escrow funds are held by PDA-owned accounts (no custodial risk)

License

MIT — brainAI 2026

Keywords

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Package last updated on 16 Jul 2026

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