# Cardano CIP-13 (Cardano URI) > Source: https://docs.barcoder.ai/docs/standards/cardano-cip-13 > research date 2026-06-04 · extracted at 2026-10-03 > Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards Specifications: - [CIP-0013: Cardano URI Scheme — cardano-foundation/CIPs](https://github.com/cardano-foundation/CIPs/blob/master/CIP-0013/README.md) - [CIP-0013 | Cardano URI Scheme](https://cips.cardano.org/cip/CIP-0013) ## Overview **CIP-13** ("Cardano URI Scheme") is a **Cardano Improvement Proposal** in the **Wallets** category that defines a standard URI format for [Cardano](https://cardano.org) actions — primarily **ADA payment requests** and **stake-pool delegation preferences** — suitable for clickable links and [QR Code](https://docs.barcoder.ai/docs/standards/qr-code) payloads [1][1], [2][2]. The intent is that a user can click a link or scan a code and have a light wallet **pre-populate** the relevant fields (recipient, amount, or a delegation portfolio) rather than typing them by hand [1][1]. The scheme prefix is **`web+cardano:`** [1][1], [2][2]. The authors chose `cardano` over `ada` because "other projects that implement this standard tend to take the project name over the currency name," and the `web+` prefix exists because browsers require a `web+` (or `ext+`) prefix for non-whitelisted custom protocol handlers [1][1]. Crucially for safety, CIP-13 specifies that payment links **pre-fill** a transaction for review rather than executing it automatically [1][1]. ## History CIP-13 was created **2020-09-22** by **Robert Phair** (cosd.com), **Sebastien Guillemot**, and **Vicente Almonacid** (both EMURGO); it is licensed CC-BY-4.0 and carries the status **Proposed** [1][1]. It is maintained in the `cardano-foundation/CIPs` repository, the canonical home of Cardano standards-track documents (a browsable mirror exists at `cips.cardano.org`) [1][1], [4][4]. The design explicitly follows **Bitcoin's BIP-21** conventions, substituting `bitcoin:` with `web+cardano:` while acknowledging BIP-21's extensibility limitations [1][1]. The scheme has since been extended by related CIPs — e.g. **CIP-0099** adds claim-link protocols under the same `web+cardano://` authority space [1][1]. ## Technical specification CIP-13 distinguishes URIs by their **authority** component [1][1]: ### Payment URIs (no explicit authority) ``` web+cardano:
? ``` - `
` — a Base58 or Bech32 Cardano address [1][1]. - `amount=` — optional; specified in **ADA** with a period decimal separator, following BIP-21 rules [1][1]. Example [1][1]: ``` web+cardano:Ae2tdPwUPEZ76BjmWDTS7poTekAvNqBjgfthF92pSLSDVpRVnLP7meaFhVd ``` ### Stake-pool delegation URIs (`//stake` authority) ``` web+cardano://stake? ``` Pools are identified either by a **56-hex-digit pool ID** or by a **3–5 character pool ticker** [1][1]. When multiple pools are listed, query values express **proportional weighting** for splitting stake; a missing proportion defaults to `1`, and for a single pool the proportion is ignored [1][1]: ``` web+cardano://stake?c94e6fe1123bf111b77b57994bcd836af8ba2b3aa72cfcefbec2d3d4 web+cardano://stake?POOL1=3.14159&POOL2=2.71828 web+cardano://stake?COSD ``` ### Other protocols Additional authorities are reserved for sibling CIPs, e.g. CIP-0099 claim links of the form `web+cardano://claim/v1?faucet_url=...&code=...` [1][1]. ## Use cases - **Donations / payment requests**: embed `web+cardano:
?amount=...` in a webpage link or [QR Code](https://docs.barcoder.ai/docs/standards/qr-code) so a supporter can pay with one click/scan [1][1]. - **Delegation portfolios**: a stake-pool operator or community can publish a `//stake` link that pre-loads a weighted set of pools into the user's wallet, lowering the friction of delegation [1][1]. - **Wallet interoperability**: a single link works across any CIP-13-aware wallet rather than tying users to one app [1][1], [3][3]. ## Implementations - **`cardano-foundation/CIPs`** — the specification repository (markdown), actively maintained with bi-weekly editor meetings [1][1], [4][4]. - **Yoroi** and **Begin Wallet** support CIP-13 **payment** URIs; stake-pool URI support was still listed as pending as of the spec's implementation notes [1][1]. - **CIP-0099** claim-link support (same scheme family) is implemented by **Yoroi, Begin Wallet, and VESPR** [1][1]. - A community glossary by NMKR documents CIP-13's role in the Cardano wallet ecosystem [3][3]. ## Comparison Versus a bare Cardano address QR (address only), CIP-13 adds an **optional amount** and, distinctively, a **`//stake` delegation mode** that no Bitcoin-style address scheme has — encoding *governance/staking intent* rather than a payment [1][1]. Relative to Stellar's [Stellar SEP-7](https://docs.barcoder.ai/docs/standards/stellar-sep-7), CIP-13 is simpler and carries **no requester authentication** (no signed-origin equivalent), relying instead on the wallet pre-filling-and-confirming model and on user vigilance against phishing [1][1]. It shares the BIP-21 lineage and the `web+` browser-handler convention with Stellar's scheme, but its payload set is narrower (payment + delegation) than TON's binary-payload deep links ([TON Transfer URI](https://docs.barcoder.ai/docs/standards/ton-transfer-uri)) or XRPL's multi-type request URIs ([XRPL Request URI](https://docs.barcoder.ai/docs/standards/xrpl-request-uri)) [1][1]. ## Status **Proposed.** CIP-13 is an accepted, numbered CIP that is implemented by some production wallets for payments, with stake-pool URI support partial; it has not been promoted beyond "Proposed" status in the CIP process [1][1], [2][2]. ## Sources [1]: https://github.com/cardano-foundation/CIPs/blob/master/CIP-0013/README.md [2]: https://cips.cardano.org/cip/CIP-0013 [3]: https://www.nmkr.io/glossary/cip-13-in-cardano [4]: https://github.com/cardano-foundation/CIPs [1] [CIP-0013: Cardano URI Scheme](https://github.com/cardano-foundation/CIPs/blob/master/CIP-0013/README.md) — Cardano Foundation, 2020 [2] [CIP-0013 | Cardano URI Scheme](https://cips.cardano.org/cip/CIP-0013) — cips.cardano.org, 2026 [3] [What is CIP-13 in Cardano?](https://www.nmkr.io/glossary/cip-13-in-cardano) — NMKR, 2026 [4] [cardano-foundation/CIPs](https://github.com/cardano-foundation/CIPs) — GitHub, 2026 ## Deployments _No country reports mention this standard by name._ ## Regions / aggregations not mapped to a single country - Universal