678f846e23Restructure the incubation into two extensions plus interchangeable data-labelling schemes, shipped as a stack of three PRs: - This PR (base): shared scaffolding + the trust-annotations extension. - action-metadata moves to its own stacked PR. - The IFC/FIDES work moves out of specification/draft/ entirely — it is one data-labelling scheme (ifc.fides.v1) that fills the trust-annotations evidenceRef slot, not an extension and not a sibling. It lands in a schemes/ folder built to hold alternative approaches (data-class, capability tokens, cosigning, sequence-shape, attestation) so no single academic model is baked into the wire. README, sep-disposition, related-work, trust-model, open-questions and the decision log are reframed accordingly (two extensions + a schemes folder; the range of candidate schemes drawn from the SEP-1913 thread and cited literature). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Related work
External references and prior art relevant to the IG's trust / privacy annotation work. Several were surfaced in IG meetings (notably 2026-05-28).
SEPs
- SEP-1913 — Trust and Sensitivity Annotations — the umbrella proposal these extensions derive from.
- SEP-2061 — Action Security Metadata — closed 2026-06-13; carried forward as
action-metadata. - SEP-1862 — Tool Resolution / pre-flight checks — core-protocol, composes with these extensions.
- SEP-2133 — Extensions — the framework this repo incubates under.
- SEP-2127 — Server Cards — precedent for the Standards→Extensions Track refactor.
- SEP-2787 — Tool Call Attestation — candidate
evidenceRefscheme.
Research
- FIDES — Information-flow control for LLM agents. arXiv:2505.23643. Basis for the
ifc.fides.v1scheme inschemes/. - Design Patterns for Securing LLM Agents — IBM/Google/Microsoft. arXiv:2506.08837. Plan-Then-Execute, Dual LLM, Map-Reduce, etc.
- Trail of Bits — prompt-injection via hidden content in GitHub issues. blog.
- OpenAI Auto Review — https://alignment.openai.com/auto-review/ (shared in IG chat).
Implementations & tooling
kapil8811/mcp-trust-annotations— reference Python SDK PoC fortrust-annotations.github-mcp-server— public MCP server; emitter candidate for theifc-fidesscheme (knows repo visibility + collaborators).- Ethyca data-labeling docs — https://www.ethyca.com/docs (shared in IG chat).
- GitHub Next agentic-workflows research on data labeling — to be documented as issues in this repo (IG action item, @gokhanarkan / @joannakl).
Adjacent community proposals (from the SEP-1913 thread)
- SINT Protocol (capability-token constraint enforcement) — pshkv.
- in-toto attestations as a trust-annotation substrate.
- OVERT 1.0 envelope shape for runtime evidence.
- Caller/tool cosigning model — viftode4.
- Sequence-shape policies — marras0914.
These are exactly the models that evidenceRef's open type is designed to
accommodate as schemes — see schemes/.