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Verification register Compute & Web Infra

Readiness verdict

jco (JS WebAssembly Component toolchain)

A dated reading of what is claimed, reported, and independently verified in the current evidence.

As of
2026-08-20
Revision
1
Method
v1.3.0

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Ready

Primary summary from verified readiness

Confidence
69% · stale
Computed at
2026-08-20T10:52:20.565265+00:00
Claimed
90

Public ambition and stated capability

Reported
82

Observed practitioner reporting

Verified
73

Independently supported evidence

Gap
+17

Claimed leads verified

Evidence strength Critical

Decision

What the current evidence supports

Human editorial judgment · 2026-08-20

Adopt with guardrails

Why
jco 1.0 is stable for WASI 0.2 on Node.js with a very active release cadence (1.24.x in June 2026) and now passes all 46 upstream Wasmtime P3 tests as a second reference implementation, but the P3 and browser surfaces are still moving and JS-source P3 is incomplete.
Next
Pilot a WASI 0.2 component transpiled to ES modules running under Node.js in a non-critical service; defer any P3/browser path until preview3-shim leaves Node-only experimental status and JS-source P3 lands.

Constraints

Blockers

No named blocker is present in the current public projection.

Evidence summary

Derived counts

AI-assisted assembly

Total
12
Tier 1
0
Tier 2
4
Tier 3
8
Supports
6
Contradicts
4
Context
2
Latest observed
2026-06-24

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Revisions

Initial public reading

  1. 2026-07-19 Reading moved from ready to ready.

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