Network Working Group C. Rehfeld
Internet-Draft 29 April 2026
Intended status: Informational
Expires: 31 October 2026
API Index (APIX): A Global Discovery Infrastructure for Autonomous Agent
Services
draft-rehfeld-bot-service-index-08
Abstract
This document, draft-rehfeld-bot-service-index-08, is superseded by
three successor Internet-Drafts that together constitute the APIX
specification suite:
* draft-rehfeld-apix-core-00 — Core infrastructure, trust model, and
Index API
* draft-rehfeld-apix-services-00 — Web API and bot service
registration profile
* draft-rehfeld-apix-iot-00 — IoT device service registration
profile
Readers are directed to those documents. This revision exists solely
to document the supersession and to note two trust model updates that
diverge from prior revisions.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 31 October 2026.
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Copyright Notice
Copyright (c) 2026 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Trust Model Updates . . . . . . . . . . . . . . . . . . . 3
1.1.1. O-3 Renamed to "Hygiene Verified" . . . . . . . . . . 3
1.1.2. O-5 Reachable Without O-4 Prerequisite . . . . . . . 3
1.2. Security Considerations . . . . . . . . . . . . . . . . . 3
1.3. IANA Considerations . . . . . . . . . . . . . . . . . . . 3
2. Informative References . . . . . . . . . . . . . . . . . . . 3
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
This document is superseded. The APIX specification originally
developed in the draft-rehfeld-bot-service-index series has been
restructured into three separate Internet-Drafts to improve
implementor focus and allow each profile to evolve independently.
The three successor documents are:
* *[APIX-CORE]* (draft-rehfeld-apix-core-00) Defines the core APIX
infrastructure: the organisation and service trust model (O-0–O-5
and S-0–S-4), the APIX Manifest (APM) base fields, the Index API,
the HATEOAS navigation model, the Spider verification framework,
and the operator governance and security obligations.
* *[APIX-SERVICES]* (draft-rehfeld-apix-services-00) Defines the APM
extension fields for web API and bot service registration,
notification channel types, GraphQL introspection behaviour,
capability taxonomy governance, accredited verifier requirements,
and the free registration tier.
* *[APIX-IOT]* (draft-rehfeld-apix-iot-00) Defines the APM extension
fields for IoT device class and device instance registration, the
presence signalling protocol, the fleet circuit breaker, the Law
Enforcement Request (LER) interface, and the agent delegation
model.
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All normative content from draft-rehfeld-bot-service-index-07 has
been transferred to those three documents. This revision adds no new
normative requirements.
1.1. Trust Model Updates
Two changes to the trust model have been made in the successor drafts
that differ from draft-rehfeld-bot-service-index-07:
1.1.1. O-3 Renamed to "Hygiene Verified"
Organisation trust level O-3 was previously described as "Basic
Compliance Verified". In the successor drafts, O-3 is designated
*"Hygiene Verified"* to better reflect its character: automated
checks (domain ownership confirmed, basic sanctions screening passed,
service liveness verified) without human review or audit. This is a
label change only; the verification requirements at O-3 are
unchanged.
1.1.2. O-5 Reachable Without O-4 Prerequisite
In draft-rehfeld-bot-service-index-07, reaching trust level O-5
(Audited) required prior attainment of O-4 (Accredited Verifier
Assessment). In the successor drafts, this prerequisite is removed.
An organisation may proceed directly from O-3 to O-5 by engaging an
Accredited Verifier and meeting the O-5 criteria, without first
completing a separate O-4 assessment. The substantive requirements
for O-5 are unchanged; only the path constraint is lifted.
1.2. Security Considerations
This document is a supersession notice only. It introduces no
protocol mechanisms, no new data formats, and no operational
requirements. All security considerations applicable to the APIX
specification are addressed in the successor documents: [APIX-CORE]
Section 12, [APIX-SERVICES], and [APIX-IOT] Section 9.
1.3. IANA Considerations
This document has no IANA actions.
2. Informative References
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[APIX-CORE]
Rehfeld, C., "API Index (APIX): Core Infrastructure for
Autonomous Agent Service Discovery", Work in Progress,
Internet-Draft, draft-rehfeld-apix-core-00, 25 April 2026,
.
[APIX-IOT] Rehfeld, C., "API Index (APIX): IoT Device Service
Profile", Work in Progress, Internet-Draft, draft-rehfeld-
apix-iot-00, 25 April 2026,
.
[APIX-SERVICES]
Rehfeld, C., "API Index (APIX): Web API and Bot Service
Profile", Work in Progress, Internet-Draft, draft-rehfeld-
apix-services-00, 25 April 2026,
.
Author's Address
Carsten Rehfeld
Email: carsten@botstandards.org
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