> ## Documentation Index
> Fetch the complete documentation index at: https://docs.recovea.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

One-line definitions of the words these docs use, each pointing at the page that explains it.

One line per word these docs use, in alphabetical order, each pointing at the page that explains it.

| Word | What it means |
| --- | --- |
| Admission | The checks the gateway runs before your provider is contacted: the key, throttling, then every armed cap. [Cap](https://docs.recovea.ai/products/cap/) |
| Armed | A cap whose hard stop is on. An armed cap refuses at its line; a cap that is not armed counts and alerts. [Cap](https://docs.recovea.ai/products/cap/) |
| `budget_exceeded` | The `error.code` of a refusal at a cap or a run's envelope: `402` in block mode, `429` in pause mode. [Cap](https://docs.recovea.ai/products/cap/) |
| `budget_unverifiable` | The `error.code` of the `503` an armed cap answers when it cannot confirm its spend, with `Retry-After: 1`. [Fail-open and fail-closed](https://docs.recovea.ai/concepts/fail-open-vs-fail-closed/) |
| Chain head | The hash of the last receipt at or before the end of a period, in the ledger export's header. [The hash-chained ledger](https://docs.recovea.ai/concepts/hash-chained-ledger/) |
| Content-free by schema | The metering record has no field that can hold a prompt, a completion or a tool argument. [Content-free by schema](https://docs.recovea.ai/concepts/content-free-by-schema/) |
| Declared upstream | An OpenAI-compatible destination of your own, reached through `https://api.recovea.ai/upstream/v1`. [Quickstart](https://docs.recovea.ai/quickstart/) |
| Envelope | The budget one run carries, declared in `x-recovea-run-budget`. [Breaker](https://docs.recovea.ai/products/breaker/) |
| Fail-open | A fault in a layer Recovea added passes your traffic through instead of refusing it. [Fail-open and fail-closed](https://docs.recovea.ai/concepts/fail-open-vs-fail-closed/) |
| Fail-closed | An armed cap refuses rather than let spend run past its line or run unwatched. [Fail-open and fail-closed](https://docs.recovea.ai/concepts/fail-open-vs-fail-closed/) |
| Gateway key | Your `rcv_live_…` credential for the gateway, shown once when it is minted. [Organization and keys](https://docs.recovea.ai/concepts/organization-and-keys/) |
| Genesis | The previous hash of the first receipt in a chain: sixty-four zeros. [The hash-chained ledger](https://docs.recovea.ai/concepts/hash-chained-ledger/) |
| Hard stop | The switch that arms a cap, **Enforce a hard stop** on the cap form. [Where a cap is set](https://docs.recovea.ai/products/caps/) |
| Key record id | The `key_` id that names a gateway key in the platform and the API, never the secret. [Organization and keys](https://docs.recovea.ai/concepts/organization-and-keys/) |
| Organization | Your account: it owns the keys, the caps, the receipts and the members. [Organization and keys](https://docs.recovea.ai/concepts/organization-and-keys/) |
| Period key | The name of one window's count, such as `2026-09` for a month or `2026-W39` for a week. [Caps and windows](https://docs.recovea.ai/concepts/caps-and-windows/) |
| Price-list version | The frozen reference price list that priced a receipt. A published version is never edited. [Meter](https://docs.recovea.ai/products/meter/) |
| Provider key | Your credential with OpenAI or Anthropic, held sealed by Recovea to sign your forwarded calls. [Organization and keys](https://docs.recovea.ai/concepts/organization-and-keys/) |
| Receipt | The record of one priced request, chained to the receipt before it. [Prove](https://docs.recovea.ai/products/prove/) |
| `recovea-chain-v1` | The published recipe that hashes each receipt with the one before it. [The hash-chained ledger](https://docs.recovea.ai/concepts/hash-chained-ledger/) |
| Request id | The `req_` id in `x-recovea-request-id`, which is also the receipt's `request_id`. [Quickstart](https://docs.recovea.ai/quickstart/) |
| Role | One of Owner, Admin, Member, Billing and Viewer, held by each member of an organization. [Roles](https://docs.recovea.ai/concepts/roles/) |
| Run | Whatever your system treats as one piece of work, named by `x-recovea-run-id`. [Breaker](https://docs.recovea.ai/products/breaker/) |
| Scope | What a cap bounds: the organization or one key. [Cap](https://docs.recovea.ai/products/cap/) |
| Tag | A label in `x-recovea-tags`, stored so you can cut your spend by it. [Tags](https://docs.recovea.ai/concepts/tags/) |
| Threshold | A percentage of a cap at which an alert fires, once per window. [Alert thresholds](https://docs.recovea.ai/concepts/alert-thresholds/) |
| Window | The clock a cap runs on: day, week, month, year or lifetime, on UTC boundaries. [Caps and windows](https://docs.recovea.ai/concepts/caps-and-windows/) |