Open draft standard · AEL v0.1

Agent Evidence Level

An open draft standard for grading AI-agent evidence by what an independent party can verify and what omission they can detect.

Status
Draft v0.1
Scale
AEL-0 to AEL-4
Specification
CC BY 4.0
Code
Apache 2.0

The scale

Each level closes another omission gap

  1. AEL-0Authentic and ordered
  2. AEL-1Gaps and truncation evident
  3. AEL-2Cross-domain omission evident
  4. AEL-3Externally anchored
  5. AEL-4Counterparty confirmed
EVALUATED

Producer or operator run

A signed evaluation package can't support a public numeric grade.

VERIFIED

Independent verifier run

A signed verification record binds the grade to the exact run and evidence.

Maintained by PipeLab. Governance isn't independent yet. PipeLab also builds Pipelock and can't award AEL grades.

01 · Evaluation and verification

Running the checker isn't the same as earning a public grade

A producer or operator can run the checker and publish a signed evaluation package. That package displays EVALUATED. It has no grade or verifier field.

A public grade needs a signed verification record from someone who is neither the producer nor the operator. The record ties the grade to the exact run, artifact bytes, checker, corpus, and replay inputs.

02 · The boundary

AEL grades the supplied evidence for one run

It doesn’t certify a product or prove that every event was recorded. Each level closes a specific omission path by adding another source of signed evidence. Organizational independence still has to be disclosed outside the cryptography.

03 · PipeLab's role

The draft is vendor-neutral. Its governance isn't independent yet.

PipeLab maintains the v0.1 draft and also builds Pipelock. PipeLab can’t award grades, Pipelock receives no special treatment, and product marks stay out of the normative specification.

04 · Read and run it

Specification, checker, schemas, and registry

Frequently asked questions

What is Agent Evidence Level (AEL)?
AEL is an open draft standard for grading a record of AI-agent activity from AEL-0 to AEL-4. The grade describes what an independent party can verify and what omission they can detect without trusting the producer or operator.
Can a producer or operator award an AEL grade?
No. A producer or operator can run the checker and publish a signed evaluation package, but that package is displayed as EVALUATED and can’t support a public numeric AEL grade.
What supports a public AEL grade?
A verifier that is neither the producer nor the operator must check the exact artifact and issue a signed verification record. The grade stays bound to that run, those artifact bytes, the named checker, and the published verification inputs.
Is AEL a PipeLab product?
No. PipeLab maintains the draft and intends to donate it to a neutral body after independent use and critique. The normative specification contains no PipeLab or Pipelock marks, and its governance isn’t independent yet.
How is AEL licensed?
The normative specification is CC BY 4.0. The reference checker, schemas, fixtures, scripts, and other code are Apache 2.0.