Open Agent Spend Guard v0.1.2 is ready to test
The first open release is a real TypeScript package and CLI, not only a browser mockup. It evaluates versioned policies with atomic-integer arithmetic, normalizes x402 v2 and bounded Safe requests, and exports reproducible RFC 8785 evidence packages.
| Release proof | Shipped in v0.1.2 |
|---|---|
| Versioned artifacts | Policy, request, decision, and complete evidence-package schemas |
| Adapters | x402 v2 exact payments and read-only Safe native transfers |
| Verification | 102 automated tests, golden hashes, strict typecheck, green public CI, tagged-install proof, and a reproducible Base Sepolia x402 challenge capture |
| Security boundary | No keys, signing, custody, settlement, Safe calldata, delegate calls, or gas refunds |
Inspect the Base Sepolia x402 proof
The public walkthrough uses the official x402 Express middleware and public facilitator to return a real unauthenticated HTTP 402 challenge for Base Sepolia USDC. OASG normalizes that challenge and exports replayable allow, approval-required, and block evidence packages.
The walkthrough does not use a wallet key or claim a funded settlement. Its receiver is an inert demonstration address. That keeps the proof reproducible without creating custody or production-fund risk.
Enforcement is improving. Decision evidence is still fragmented.
Wallet providers and payment-control products increasingly ship native limits, ledgers, modules, and guards. Those systems should remain authoritative. Their policy meanings and audit records do not automatically travel when an agent touches multiple wallets, chains, facilitators, and providers.
Open Agent Spend Guard is the neutral evidence layer between them. It normalizes intent, produces a deterministic reference decision, and exports a replayable record without pretending to replace runtime enforcement.
Start with a paid policy and evidence workshop
The initial commercial entry point is a fixed workshop, not another wallet or a risky enforcement deployment.
- Agent, wallet, provider, and payment-flow inventory
- Budget hierarchy and authority model
- Token, chain, counterparty, amount, and timing rules
- Human approval and exception evidence
- Replay, reconciliation, and audit requirements
- Provider control mapping and evidence-emitter roadmap
Workshop price: $3,500 paid upfront for one agent, one provider, and one operating environment. Multi-provider or production work is separately scoped.
Design-partner product scope
| Capability | What it does | Initial mode |
|---|---|---|
| System inventory | Maps agents, owners, wallets, providers, and environments | Workshop artifact |
| Policy schema | Represents versioned amount, asset, chain, counterparty, purpose, and approval rules | Open v0.1 schema |
| Reference evaluator | Produces deterministic allow, block, or approval-required decisions | Open v0.1 package |
| Evidence package | Binds the policy, request, reason, decision, timestamp, and canonical hashes | Replayable JSON |
| Normalizers | Maps provider-native requests into the shared evidence model | x402 and Safe in v0.1 |
| Emitter mapping | Shows an existing wallet or control product how to emit portable evidence | Design-partner scope |
Connector order
- Open schemas, evaluator, evidence package, and CLI - shipped in v0.1
- x402 v2 and Safe native-transfer normalizers - shipped in v0.1
- Base Sepolia x402 challenge and evidence walkthrough - shipped publicly
- Three qualified design-partner evaluations and an independent review - recruiting now
- Evidence emitters for existing wallet and enforcement providers
Design-partner terms
No-meeting replay: send one sanitized synthetic or testnet x402 or Safe request. We will return the normalized request, three policy outcomes, a replayable evidence package, and a concise issue list. No production keys, funds, screen share, or live meeting are required.
A bounded evidence-emitter prototype begins at $10,000 for one real payment flow, one existing wallet or control provider, a test environment, and explicit responsibility boundaries. Production integration begins at $25,000 after a successful workshop or prototype. OASG does not need custody or signing authority for either scope.
The provider-neutral schemas, reference evaluator, evidence format, and selected read-only normalizers are suitable for ecosystem grant funding. Commercial workshops, evidence-emitter mappings, and client-specific integrations remain separately scoped.