Commit graph ext-skills/docs/threat-model.md
Author SHA1 Message Date
Ola Hungerford
5adfff5952
Clean and and re-organize repo docs (#146)
* docs: point README and AGENTS.md at the released spec and official docs

SEP-2640 is Final and the extension ships from specification/stable/skills.mdx,
so the README now leads with a Specification section linking the spec file,
the official docs page (modelcontextprotocol.io/extensions/skills/overview),
the published SEP, and the client matrix. The experimental banner is replaced
with a note that docs/ holds working documents; the charter, pulls, and issues
links move off the redirecting experimental-ext-skills / charter URLs.

AGENTS.md no longer names the SEP PR as the source of truth; it points agents
at the stable spec page and describes the decision-log flow against that file.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: accepted spec changes land in a draft revision, not the stable file

The stable specification is a released snapshot. README and AGENTS.md now say
accepted decision-log proposals go into a draft revision that ships as a new
release, matching the ext-tasks specification layout.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: move pre-release design documents to docs/archive

SEP-2640 is Final, so docs/ now holds only living working documents. Eight
historical documents move to docs/archive with an index explaining what each
was and what superseded it: the SEP baseline copy, why-and-when, use-cases,
approaches, skill-uri-scheme, glossary, client-mcp-support (superseded by the
official client matrix), and agent-plugins-analysis.

Files the published SEP links to by path (decisions, experimental-findings,
open-questions, problem-statement, rationale, related-work, skill-meta-keys)
stay in place so those links keep working. Cross-links are rewritten and
verified; the README contents table is trimmed to match.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: archive open-questions and skill-meta-keys

Both are pre-release documents whose outcomes live in the decision log and
the specification. The published SEP links to them by path; a companion
change in modelcontextprotocol/modelcontextprotocol repoints those links.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: fix sibling links inside archived open-questions and skill-meta-keys

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: keep only the decision log and rationale in docs/

threat-model, experimental-findings, findings-template, problem-statement,
and related-work move to docs/archive with index rows. The candidates
tracker and the archived client-support survey are removed in favor of the
official extension client matrix, and links to them are repointed there.

README drops the Why and Problem Statement sections, which duplicate the
SEP's Motivation and the official overview page. CONTRIBUTING routes new
implementation findings to GitHub issues.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: fix sibling links inside newly archived documents

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: add a concise implementations list

One table each for servers/SDKs and hosts, one line per entry, replacing the
retired candidates tracker and the related-work implementation tables. Seeded
from those plus PR #141 and issue #144.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: put tracking links in the Status column of the implementations list

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: add a vendor/community category to the implementations list

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: replace the interim reference package with the TypeScript SDK row

The @olaservo/ext-skills package is retired in favor of first-class skills
APIs in the TypeScript SDK (typescript-sdk#2798, phase 1 in #2818). The
archived related-work page now points at implementations.md for current
information.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: drop pre-SEP rows from the implementations list

They are already recorded in the archived related-work page; the list now
points there instead. FastMCP stays because its row tracks the migration to v1.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: add official SDK progress, Tachyon, and Inspector 2.6.0 to implementations

From the WG Discord channel and the SDK repos as of 2026-09-15: Go, TypeScript,
Python, and C# SDKs all have open SEP-2640 PRs (Go passes conformance); the
conformance suite merged; Inspector 2.6.0 shipped skills verification; Tachyon
reports a server implementation. Adds an "in progress" status for open PRs.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: track Goose host support via the official issue

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: only tag community rows in the implementations list

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: tag MCP-project rows as official in the implementations list

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: split the implementations list into SDKs, servers, and hosts

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* docs: add MCPJam Inspector to hosts

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* Revise implementations table format and content

Updated the implementations table to include language and status columns.

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Correct links and clarify documentation references

Updated links to SEP-2640 and clarified document references.

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Sambhav Kothari <sambhavs.email@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
2026-09-16 06:56:20 +02:00
Ola Hungerford
64db7eaf72
Add threat model doc for skills extension (#108)
* docs: add threat model for skills over MCP (SEP-2640)

Add docs/threat-model.md covering the delivery and host-handling layer
for skills served over MCP. Recommends the install (materialize to a
host-private, immutable store) path as the baseline over load-on-demand,
enumerates non-archive threats (T1-T7) with a full per-fixture mapping to
the dangerous-skills-mcp corpus and to SEP-2640 clauses, folds in the
mcpkit reference-implementation findings, and keeps the archive threat
model as an appendix (archives are slated for removal from this version).

Index the new doc in the README repository-contents table.

🦉 Generated with Claude Code

* docs: refine threat model by removing out-of-scope content and clarifying core boundaries

* docs: reconcile threat model with current SEP-2640 revision

Update the threat model to track the canonical sep/skills-extension
revision instead of the stale local working draft, and address review
feedback on PR #108.

- Retire skill://index.json terminology in favor of skills/list +
  skills/get and the per-file `resources` digest set.
- Mark the B1 supporting-file-digest gap closed: `resources` now
  enumerates every file with a digest and unlisted reads are
  verification failures. Flip adv-supporting-file-digest-swap status.
- Reframe archives as a deferred feature (SEP Appendix: Deferred
  Features); mark archive fixtures Deferred and `refunds` Resolved
  (skills are keyed by uri, not name).
- Add T8 cross-origin name-collision impersonation, T9 nested-skill
  consent, and a directory-walk subtree-escape row under T5, each
  flagged as not yet exercised by the corpus.
- Add a Scope note on skill-catalog metadata confidentiality.
- Add the missing "Residual gaps and future directions" section
  (previously referenced but absent), covering the unsigned-digest
  trust-anchor gap and the third-party attestation direction.

🦉 Generated with [Claude Code](https://claude.com/claude-code)

* docs: add discovery-surface grounding and enumeration-exhaustion threat

- Add a "Protocol surface" paragraph to the system model naming
  skills/list, skills/get, and resources/directory/read and what each
  exposes, so threats can reference them against a stated baseline.
- Add enumeration/pagination exhaustion to T6: a server returning an
  unbounded skills/list or resources/directory/read stream via an
  endless nextCursor exhausts the host at discovery time, before any
  file is fetched. SEP bounds neither page nor entry count; flagged as
  no corpus fixture yet. Reflected in the fixture map and residual gaps.

🦉 Generated with [Claude Code](https://claude.com/claude-code)

* docs: copy-edit threat model to reduce em-dash and antithesis density

Style-only pass over prose I wrote. No change to any technical claim,
normative keyword, fixture reference, or table. Thins the em-dash habit
(convert appositive/dramatic dashes to periods, commas, or parens) and
de-duplicates the "X, not Y" closer, keeping only the load-bearing
contrasts. Definition-list and reference-list dashes left as-is.

🦉 Generated with [Claude Code](https://claude.com/claude-code)
2026-07-29 21:25:45 -07:00