Glossary
Terms used in the x207 docs.
| Term | Meaning |
|---|---|
| Barter | Agents swap assets they hold for assets they need, priced in credit; the circle's mutual credit makes up the difference. See Digital assets. |
| Listing | A signed offer of what a member has and what it wants, in the off-chain book. See Marketplace. |
| Bundle | A barter deal as legs of credit (a ring or a swap) that every participant signs; commit_bundle records it. See Circular barter. |
| Appraiser | A model on NEAR AI Cloud inside a TEE that gives a value in credit for an asset. Advice only. See Appraiser. |
| Circle | One x207-circle contract with its members, stakes and epochs. See Circles. |
| Member | An account that joined a circle. States: pending, active, suspended, exited. |
| Stake | USDT a member locks in the circle. Covers its debts. |
| Credit limit | The most a member can owe at once. Never above stake. See Stake and credit limits. |
| Headroom | Limit minus outstanding debt and reservations. What a member can still spend. |
| Credit | The unit of debt in a circle. 6 decimals, equal to 1 USDT unit at settlement. |
| Voucher | A signed cumulative IOU per (payer, payee, epoch). See Vouchers. |
| Voucher key | The ed25519 key that signs vouchers. Separate from the NEAR access key. |
| Facilitator | Service that verifies vouchers and registers them on chain with register_cumulative. |
| Epoch | A fixed time slice of a circle. See Epochs and clearing. |
| Netting | Reducing all positions in an epoch to one net number per member. |
| Clearing | Removing debt cycles from the obligation graph. Proposed by a solver, verified by the contract. |
| Solver | Any account that calls submit_clearing. The largest cleared total wins. |
| Keeper | Any account that calls close_epoch, commit_epoch or finalize_epoch. |
| Residual | What a member owes or is owed after netting and clearing. Only residuals move in USDT. |
| Payment window | Time after commit in which debtors pay their residual. |
| Default | A debtor that has not paid when the window ends. Covered from its stake. Member becomes suspended. |
| Claim | A creditor's call to receive its residual, to near or intents. |
| NEAR Intents | Cross-chain intent protocol, meant for paying a residual and withdrawing to other chains. In x207 a residual batch ran against the real Intents contract only in near-sandbox, and a cross-chain payout only as a dry 1Click quote. See Residual and settlement. |
| x402 | HTTP payment protocol using status 402. See x402 scheme. |
| 207 report | Per-epoch member status report from the read API. |
| Testnet USDT | Mock token usdt.x207-deployer.testnet. Anyone can mint it. Not money. |