Feat: Core capability exchange, extension architecture, and enforcement mechanisms - #2
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emg110 wants to merge 11 commits into
Open
Feat: Core capability exchange, extension architecture, and enforcement mechanisms#2emg110 wants to merge 11 commits into
emg110 wants to merge 11 commits into
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…es to support extension architecture), Add pre-authorized extension
ehanoc
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May 2, 2026
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Pull request overview
This PR updates the AC2 core specification to clarify core invariants, add an explicit extensions model (including MPP use cases), and introduces a new “Pre-Authorized Operations” extension for bounded autonomous payments/asset transfers.
Changes:
- Refines AC2 core language around key custody, signature request semantics, and adds extension architecture + capability namespacing guidance.
- Adds MPP (
charge/session) use cases and related references. - Introduces
ac2-ext-pre-authorizeddefining a Pre-Authorized pattern and messages for top-ups, grants, and spend receipts.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 7 comments.
| File | Description |
|---|---|
| ac2.md | Updates core AC2 protocol narrative, data model examples, and adds extension architecture + additional message examples. |
| ac2-ext-pre-authorized.md | New extension spec defining pre-authorized autonomous payment/transfer flows and associated DIDComm messages. |
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emg110
changed the title
…eys" to avert the issue that within AC2 scope agents create keys to generate DIDs and start communication over AC2.
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This PR provides:
snake_casebody-field consistency, seconds-precision DIDComm timestamps)ac2/CapabilityRequest/ac2/Capabilities, as already shipped in the field (OpenClaw, Claude Code, and Codex plugins + the Regent wallet), with multi-identity, multi-account, multi-chain supportsig_hint,key_type,display_hint) with chain-appropriate response fields (CAIP-10-friendly)discover-features/2.0advertisement, layering invariants, fallback rulesKeyRequest/KeyResponsein favor of the capability exchange and multi account implementation