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AIP Purpose and Guidelines
Tom Nash (@morelazers)

What is an AIP?

AIP stands for Ampleforth Improvement Proposal, it has been adapted from the EIP (Ethereum Improvement Proposal). The purpose of this process is to ensure changes to Ampleforth are transparent and well governed. An AIP is a design document providing information to the Ampleforth community about a proposed change to the system. The author is responsible for building consensus within the community and documenting dissenting opinions.

What is an ACCP?

ACCP stands for Ampleforth Configuration Change Proposal. ACCP's are documents for making a case for modifying one of the system configuration variables. The intent is to provide a clear and detailed history behind each configuration change and the rationale behind it at the time it was implemented. The author of the document is responsible for building consensus within the community and documenting dissenting opinions.

AIP & ACCP Rationale

We intend AIPs and ACCPs to be the primary mechanisms for proposing new features, collecting community input on an issue, and for documenting the design decisions for changes to Ampleforth. Because they are maintained as text files in a versioned repository, their revision history is the historical record of the feature proposal.

It is highly recommended that a single AIP contain a single key proposal or new idea. The more focused the AIP, the more successful it is likely to be.

An AIP or ACCP must meet certain minimum criteria. It must be a clear and complete description of the proposed enhancement. The enhancement must represent a net improvement.

AIP Work Flow

Parties involved in the process are the author, the AIP editors, the Ampleforth Core Contributors, and the Ampleforth Community.

⚠️ Before you begin, vet your idea, this will save you time. Ask the Ampleforth community first if an idea is original to avoid wasting time on something that will be rejected based on prior research (searching the Internet does not always do the trick). It also helps to make sure the idea is applicable to the entire community and not just the author. Just because an idea sounds good to the author does not mean it will have the intend effect. The appropriate public forum to gauge interest around your AIP or ACCP is the Ampleforth Discord.

Your role as the champion is to write the AIP using the style and format described below, shepherd the discussions in the appropriate forums, and build community consensus around the idea. Following is the process that a successful AIP will move along:


Each status change is requested by the AIP author and reviewed by the AIP editors. Use a pull request to update the status. Please include a link to the github issue where people should continue discussing your AIP. The AIP editors will process these requests as per the conditions below.

  • Work in progress (WIP) -- Once the champion has asked the Ampleforth community whether an idea has any chance of support, they will write a draft AIP as a pull request. Consider including an implementation if this will aid people in studying the AIP.

  • Proposed If agreeable, AIP editor will assign the AIP a number (generally the issue or PR number related to the AIP) and merge your pull request. The AIP editor will not unreasonably deny an AIP. Proposed AIPs will be discussed on a github issue. If there is a reasonable level of consensus around the change on the governance call the change will be moved to approved. If the change is contentious a vote of token holders may be held to resolve the issue or approval may be delayed until consensus is reached.

  • Approved -- This AIP has passed community governance and is now being prioritised for development.

  • Implemented -- This AIP has been implemented and deployed to mainnet.

  • Rejected -- This AIP has failed to reach community consensus.

What belongs in a successful AIP?

Each AIP or ACCP should have the following parts:

  • Preamble - RFC 822 style headers containing metadata about the AIP, including the AIP number, a short descriptive title (limited to a maximum of 44 characters), and the author details.
  • Simple Summary - “If you can’t explain it simply, you don’t understand it well enough.” Provide a simplified and layman-accessible explanation of the AIP.
  • Abstract - a short (~200 word) description of the technical issue being addressed.
  • Motivation (*optional) - The motivation is critical for AIPs that want to change Ampleforth. It should clearly explain why the existing specification is inadequate to address the problem that the AIP solves. AIP submissions without sufficient motivation may be rejected outright.
  • Specification - The technical specification should describe the syntax and semantics of any new feature.
  • Rationale - The rationale fleshes out the specification by describing what motivated the design and why particular design decisions were made. It should describe alternate designs that were considered and related work, e.g. how the feature is supported in other languages. The rationale may also provide evidence of consensus within the community, and should discuss important objections or concerns raised during discussion.
  • Test Cases - Test cases may be added during the implementation phase but are required before implementation.
  • Copyright Waiver - All AIPs must be in the public domain. See the bottom of this AIP for an example copyright waiver.

AIP Formats and Templates

AIPs should be written in markdown format. Image files should be included in a subdirectory of the assets folder for that AIP as follows: assets/aip-X (for aip X). When linking to an image in the AIP, use relative links such as ../assets/aip-X/image.png.

AIP Header Preamble

Each AIP must begin with an RFC 822 style header preamble, preceded and followed by three hyphens (---). This header is also termed "front matter" by Jekyll. The headers must appear in the following order. Headers marked with "*" are optional and are described below. All other headers are required.

aip: (this is determined by the AIP editor)


author: <a list of the author's or authors' name(s) and/or username(s), or name(s) and email(s). Details are below.>

* discussions-to: <a url pointing to the official github issue>



* updated:

* requires: <AIP number(s)>

* resolution: <a url pointing to the resolution of this AIP>

Headers that permit lists must separate elements with commas.

Headers requiring dates will always do so in the format of ISO 8601 (yyyy-mm-dd).

author header

The author header optionally lists the names, email addresses or usernames of the authors/owners of the AIP. Those who prefer anonymity may use a username only, or a first name and a username. The format of the author header value must be:

Random J. User <address@dom.ain>


Random J. User (@username)

if the email address or GitHub username is included, and

Random J. User

if the email address is not given.

discussions-to header

While an AIP is in WIP or Proposed status, a discussions-to header will indicate the URL for the github issue where the AIP is being discussed.

created header

The created header records the date that the AIP was assigned a number. Both headers should be in yyyy-mm-dd format, e.g. 2001-08-14.

updated header

The updated header records the date(s) when the AIP was updated with "substantial" changes. This header is only valid for AIPs of Draft and Active status.

requires header

AIPs may have a requires header, indicating the AIP numbers that this AIP depends on.

Auxiliary Files

AIPs may include auxiliary files such as diagrams. Such files must be named AIP-XXXX-Y.ext, where “XXXX” is the AIP number, “Y” is a serial number (starting at 1), and “ext” is replaced by the actual file extension (e.g. “png”).

AIP Editors

The current AIP editors are

* Ahmed Naguib Aly (@ahnaguib)

* Nithin Krishna (@nithinkrishna)

* Brandon Iles (@brandoniles)

AIP Editor Responsibilities

For each new AIP that comes in, an editor does the following:

  • Read the AIP to check if it is ready: sound and complete. The ideas must make technical sense, even if they don't seem likely to get to final status.
  • The title should accurately describe the content.
  • Check the AIP for language (spelling, grammar, sentence structure, etc.), markup (Github flavored Markdown), code style

If the AIP isn't ready, the editor will send it back to the author for revision, with specific instructions.

Once the AIP is ready for the repository, the AIP editor will:

  • Assign an AIP number (generally the PR number or, if preferred by the author, the Issue # if there was discussion in the Issues section of this repository about this AIP)

  • Merge the corresponding pull request

  • Send a message back to the AIP author with the next step.

Many AIPs are written and maintained by developers with write access to the Ampleforth codebase. The AIP editors monitor AIP changes, and correct any structure, grammar, spelling, or markup mistakes we see.

The editors don't pass judgment on AIPs. We merely do the administrative & editorial part.


The AIP document was derived heavily from the EIP Ethereum Improvement Proposal document in many places text was simply copied and modified. Any comments about the AIP document should be directed to the AIP editors. The history of the EIP is quoted below from the EIP document for context:

  • "This document (EIP) was derived heavily from Bitcoin's BIP-0001 written by Amir Taaki which in turn was derived from Python's PEP-0001. In many places text was simply copied and modified. Although the PEP-0001 text was written by Barry Warsaw, Jeremy Hylton, and David Goodger, they are not responsible for its use..." *

Oct 12, 2020: AIP 1 has been drafted and submitted as a PR.

See the revision history for further details, which is also available by clicking on the History button in the top right of the AIP.



Copyright and related rights waived via CC0.