Axiom Stack · FAQ

Frequently asked questions

Answers on the products, the architecture, security and compliance posture, pricing, and the company. For live operational state see the status page; to integrate, the developer surface.

Product

What is Axiom Stack?: Axiom Stack is Solana-native infrastructure for autonomous agent commerce. It ships two products on one Solana-anchored stack: Themra, cryptographically attested real-world-asset data feeds, and the Payment Factory, multi-protocol payment infrastructure for agent commerce.
What is the difference between Themra and the Payment Factory?: Themra delivers verifiable data attestations — each call produces an on-chain account you can read and prove against. The Payment Factory is the payment layer: four protocols (Bearer, x402, AP2, MPP) on a single endpoint that can charge any Solana-settling service. Themra runs on top of the Payment Factory — it is our own dogfood — but the two are independently useful.
Can I use either product independently?: Yes. Use Themra for attested data without ever touching the Payment Factory directly, or wire your own service to the Payment Factory without using Themra at all. See the products overview.
Is Axiom Stack production-ready?: Both products are production-grade and verified end-to-end on Solana devnet during private beta. Mainnet launch follows a formal third-party security audit scheduled for Q3 2026. Live operational state is on the status page.

Technical

Which Solana network do you run on?: Solana devnet today. Mainnet follows the Q3 2026 security audit. The on-chain program ID is 7jaScjdweyaX6HhzexauEiMe7s7zoqWnkQYLSbNaezeK.
How is an attestation verified?: Every attestation uses a two-writer on-chain model. The result lands in an AssetStateV2 PDA, and the response carries the write transaction signature (write_tx_sig) so you can fetch the account and the transaction independently and prove the data against the chain. You do not have to trust our API — you can verify on-chain.
What is the difference between the instant and audit tiers?: The instant tier returns the attestation in under two seconds with a provisional on-chain commit that lands asynchronously. The audit tier is fully on-chain at response time with two-writer verification — higher latency, the strongest verifiable trail. Pricing differs per tier; see the coverage matrix for which classes support which tier.
Which asset classes are supported?: Today: equity (class 2) instant + audit, and crypto (class 6) instant. Real estate (class 1) is pending Phase 6 verification; crypto audit is a V1.1 candidate. The on-chain program accepts classes 1–6; the live request path is a subset. Full honest detail is on the coverage matrix.
Which payment protocols are supported?: Four, all live on the same endpoint: Bearer (prepaid quota, enterprise shape), x402 (agent-autonomous per-call USDC), AP2 (mandate passthrough), and MPP (charge voucher). The server prefers the most explicit mode if several are present. See the Payment Factory reference.
Do I need a Coinbase Developer Platform (CDP) account?: No. Axiom settles payments server-side. You do not need any CDP credentials to use Themra or the Payment Factory. A reference Solana signer adapter is published in the SDK repository at examples/signer-adapter-solana/ for teams who want to drive their own wallet for x402.
How do I integrate my own service?: Publish a .well-known/x402 manifest advertising your treasury owner pubkey, accepted asset, network, and price, then return HTTP 402 with the accepts list on unpaid calls. Settlement hits your own treasury on Solana — Axiom's backend stays uninvolved. The full recipe is in the integrations guide.
Where are the docs, SDK, and MCP server?: The developer surface is at /developers. SDKs are published as @axiom-stack/sdk (npm) and axiom-stack (PyPI). The Model Context Protocol server ships in two transports: local stdio via npx @axiom-stack/mcp-server for editor agents, and a hosted HTTP endpoint at mcp.axiomstack.dev/mcp for hosted assistants.

Security & compliance

How is the program upgrade authority secured?: The upgrade authority is hardware-anchored to a Ledger secure element and verifiable on-chain (26EsRFpA8AgGWMo9gAQGhRZvLn5LSk8JYdCdVxogkfa5). No hot key controls program upgrade, settlement, and attestation simultaneously.
How are signing keys protected?: Backend signing keys are backed by a customer-managed CMK (AWS KMS) — operational keys are never held in plaintext at rest in application config. The upgrade authority is on hardware, separate from operational signing.
Are you SOC 2 certified?: No — SOC 2 is not pursued in V1. The infrastructure is designed to audit-grade standards, and a formal third-party security audit of the Anchor program and related infrastructure is scheduled for Q3 2026. We surface this honestly rather than imply a certification we do not hold.
When will you launch on mainnet?: After the formal third-party security audit completes (scheduled Q3 2026) and treasury hardening is in place. We do not put a mainnet date ahead of the audit.
Who can publish attestations?: Only registered providers and the Master Broker can write attestations on-chain. Attestation writers are gated by the on-chain provider registry; arbitrary callers cannot publish data.

Pricing

How much does an attestation cost?: Per attestation, in USDC on devnet: equity and crypto instant are $0.02; equity audit is $0.20. x402 calls are discounted relative to Bearer for the same call.
Is there a subscription?: No subscription. Bearer is prepaid USDC quota charged per call; x402, AP2, and MPP settle per call. You pay for what you ping.
How do I get an API key?: Themra is in devnet private beta with invitation-only access. Self-serve signup is closed while we validate the V1 customer journey — request access and we will provision your key directly. Existing customers continue to log in as usual.
When will real estate be priced and available?: Real estate (class 1) is pending Phase 6 verification; pricing and availability will be published on the coverage matrix once it is re-verified end-to-end.

Company