mpc-protocols SKILL.md skillA
mpc-protocols from sparq-org/sparq is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sparq-org/sparq/mpc-protocols@git:20261005.afb6badPins git:20261005.afb6bad in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sparq-org/sparq
- Path
.claude/skills/mpc-protocols/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261005.afb6bad, committed Oct 5, 2026
- First version recorded
- Jun 13, 2026
- Size
- 8,038 bytes
- Repository stars
- 13
- License
- MIT
Secure Multi-Party Computation primitives and the honest SOTA for MPC over (federated) SPARQL — secret sharing, garbled circuits, collaborative zk-SNARKs, authenticated-input MPC, and what is / is NOT achievable today. Use when working on the sparq-mpc crate (RQ2), choosing an MPC trust model or primitive, reasoning about the four distinct guarantees (confidentiality / correctness / attestation / malicious-security), composing MPC with the existing ZK estate, or sizing the feasibility envelope.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# MPC protocols for federated SPARQL (RQ2)
Design-for-review. Ground
truth: `research/mpc-zkp-research-and-architecture.md` and the `sparq-mpc` crate
(`crates/sparq-mpc/{src/lib.rs,PLAN.md}`, currently a Milestone-0 scaffold). Every
crypto claim must trace to a citation in the architecture doc — do not invent.
## The frame: four guarantees, kept DISTINCT
The single most common error in this space is conflating guarantees. Keep them
separate at all times:
- **(A) Confidentiality** — no party learns another's inputs.
- **(B) Computation correctness** — the output is the right answer.
- **(C) Input authentication** — "derived from attested sources": the data is
issuer-signed under a key in the disclosed key-set `K`.
- **(D) Malicious security** — guarantees hold against actively cheating parties,
not just honest-but-curious ones.
Three pitfalls encoded as hard assumptions: **commitment ≠ attestation** (proving
over committed data says nothing about who *signed* it — needs a CP-SNARK/Dutta
link); **confidentiality ≠ correctness** (a "no party learns X" system can still
return wrong answers — most graph-MPC papers only deliver A); **honest-majority ≠
malicious-against-N−1**.
…Read the whole file at its exact version.
How to install
mdr add sparq-org/sparq/mpc-protocols@sha256:5475155a24417840The line at the top of this page pins the label git:20261005.afb6bad, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_gvivy2e75ihquqgq)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 13, 2026 and Oct 5, 2026, about one every 57 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.afb6bad latest | 2026-10-05 | afb6bad | 8,038 B | A | view · diff |
| git:20260616.36f2cb4 | 2026-06-16 | 36f2cb4 | 8,092 B | A | view · diff |
| git:20260613.c30c40a | 2026-06-13 | c30c40a | 7,992 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8038 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
sparq-org/sparq · 13 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gvivy2e75ihquqgq GET https://markdownregistry.com/api/v1/resolve?ref=sparq-org/sparq/mpc-protocols GET https://markdownregistry.com/api/v1/blob/5475155a244178403f574667589e5d8d886324e398a639c84ef86ca4d5b7aed9
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.