



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   This document, draft-rehfeld-bot-service-index-08, is superseded by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,
              <https://datatracker.ietf.org/doc/draft-rehfeld-apix-
              core/>.

   [APIX-IOT] Rehfeld, C., "API Index (APIX): IoT Device Service
              Profile", Work in Progress, Internet-Draft, draft-rehfeld-
              apix-iot-00, 25 April 2026,
              <https://datatracker.ietf.org/doc/draft-rehfeld-apix-
              iot/>.

   [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,
              <https://datatracker.ietf.org/doc/draft-rehfeld-apix-
              services/>.

Author's Address

   Carsten Rehfeld
   Email: carsten@botstandards.org



























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