vlayer
Infrastructure · tested 2026-09-06 · re-test due 2026-12-05 · by the Hlido desk, not the vendor
In short: Zero-knowledge infrastructure that lets Ethereum smart contracts verify real-world data — powerful primitives (Web/Email Proofs, Time Travel, Teleport), but reviewed here through docs the site itself flags as outdated.
4 PASS · 1 FAIL of 5 public-surface claims
Quick answer
vlayer scores 70/100 (STEADY) on Hlido’s independent, hands-on test (reviewed 2026-09-06). STEADY (70) because vlayer offers real, well-differentiated ZK/MPC primitives with concrete on-chain use-cases and a documented JS/TS + React developer path. Pricing was not findable on the public surface when tested.
vlayer is developer infrastructure for the Web3 stack: it lets Ethereum smart contracts extract, verify and integrate real-world data using zero-knowledge proofs and multi-party computation, so a contract can act on a fact without the underlying private data ever being exposed. The four primitives are genuinely interesting and clearly scoped — Web Proofs (verify data from APIs and websites on-chain), Email Proofs (bring email content on-chain, e.g. to reset an account-abstraction wallet), Time Travel (use historical on-chain balances for airdrops, voting or entitlements) and Teleport (execute a contract across EVM-compatible chains). The use-cases are concrete rather than hand-wavy: proof of asset custody, proof-of-holdings as cross-chain loan collateral, verifiable social-media engagement for brand partnerships. It is distributed as a developer toolkit — install the CLI, scaffold a project, and drive it from Vanilla JS/TS or React. What holds the score down is not the technology but the surface we could review: the reviewed page is the `book.vlayer.xyz` handbook, which opens with its own banner saying the docs are outdated and pointing to a newer site, so the first thing a developer (or an agent) meets is a self-declared stale reference. There is no pricing, no maturity or production-readiness signal, and the proof primitives require a blockchain environment to exercise, so this is a review of documentation, not of behaviour. For teams already building on Ethereum who need verifiable off-chain data, the primitives are worth a serious look — but the public entry point needs to stop sending readers to a page it admits is out of date.
Why STEADY
STEADY (70) because vlayer offers real, well-differentiated ZK/MPC primitives with concrete on-chain use-cases and a documented JS/TS + React developer path. Held in the low band because the reviewed surface is a handbook the site itself flags as outdated, no pricing or production-maturity evidence is public, and the proofs can only be exercised inside a blockchain environment — so this is a documentation review, not a behavioural one. It rises with a current, non-deprecated docs entry point and public evidence of production usage.
Public-surface checklist
- PASS Homepage loads (required)
- PASS Primary value prop (required) — vlayer enables developers to extract, verify and integrate real-world data into Ethereum smart contracts
- PASS Cta present (required) — Getting Started / Installation flow documented
- FAIL Pricing or access — No pricing on the reviewed docs surface
- PASS Evidence or demo — Concrete use-cases and a documented JS/TS + React integration path
What we saw
1 screenshot captured by the Hlido engine during the reviewed run (run-6f90f0a009b29ffd-book-vlayer-xyz). Our own captures — not vendor marketing material.
What it does well
- Clearly-scoped ZK/MPC primitives — Web Proofs, Email Proofs, Time Travel and Teleport — each mapped to concrete real-world applications
- Solves a genuine problem: acting on verified facts on-chain without exposing the underlying private data
- Documented developer path from Vanilla JS/TS and React, with installation and first-project steps
- Cross-chain execution (Teleport) and historical on-chain reads (Time Travel) are differentiated capabilities, not table stakes
What it fails at
- The reviewed docs page (book.vlayer.xyz) carries its own banner saying it is outdated and points elsewhere — a poor public entry point
- No pricing or access model visible on the reviewed surface
- No production-maturity, security-audit or adoption evidence on the captured surface
- The primitives require a blockchain environment to exercise — nothing is behaviourally testable from the public page
- No MCP server or agent-native interface surfaced
Red flags
- The primary reviewed documentation page declares itself outdated and redirects readers to a different site
Best for
- Ethereum / EVM developers who need to bring verified off-chain or historical on-chain data into smart contracts
- Teams building account-abstraction, airdrop, entitlement or cross-chain-collateral flows that depend on provable facts
- Web3 builders comfortable evaluating ZK/MPC tooling from source and current docs
Not recommended for
- Non-blockchain teams — the entire value proposition assumes smart-contract deployment
- Buyers who need published pricing or a production-readiness signal before evaluating
- Agent-driven workflows expecting an MCP server or hosted API rather than an on-chain SDK
Pricing & access
- Pricing findable on the public surfaceFAIL No pricing on the reviewed docs surface (tested 2026-09-06)
Derived from Hlido-held evidence only (engine checklist + editorial text); quotes are verbatim from the scorecard; not vendor-supplied; re-derived daily. Verify current prices on the vendor's pricing page. Last verified 2026-09-06.
Related agents
Agent relevance
CLI SDK
vlayer is a developer SDK/CLI for Ethereum smart-contract development (Vanilla JS/TS and React), not a hosted agent surface. An agent could consume it only as a code library within a blockchain project; there is no MCP server or hosted API on the reviewed surface, and the proofs require a chain environment to run.
Agent-friendly score: 4/10
Score over time
The longitudinal record — every point is the score as published on that date. Raw series.
Evidence
- ZK + MPC let smart contracts verify private real-world data without exposing it — source (2026-09-06) verified
- Four core features: Web Proofs, Email Proofs, Time Travel, Teleport — source (2026-09-06) verified
- Documented developer path via Vanilla JS/TS and React — source (2026-09-06) verified
- Reviewed docs page declares itself outdated — source (2026-09-06) verified
