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jouleclaw: a routing plan carries the class of its energy figure
#390 said the enforceable fix for `router_joules` was to give `RoutingPlan` a
provenance, so a declared constant stops sharing a type with a measurement.
This is that change.

`RoutingPlan` gains `router_energy_class: Provenance`. Every router in this
workspace sets `Estimator`, because every one of them charges a constant or a
sum of constants — **nothing in routing is measured today**, and the type now
says so rather than leaving a reader to find out. It matters because the figure
is debited: `tier.rs` does `spent += plan.router_joules`, and a consumer that
cannot tell a measurement from a constant cannot tell whether the budget it is
enforcing means anything.

Three alternatives were rejected on the merits, not on taste:

- `JouleClass` is a tier taxonomy (Cache/Lawful/Embed/Model/Wire), not a grade.
- Moving `Provenance` into `jouleclaw-core` would be the tidier home, but it has
  **61 importers**; churning them to serve two crates is not proportionate.
- A local grade enum in cascade would make a third spelling of a vocabulary the
  family already has.

So cascade and routing depend on `jouleclaw-energy` with
`default-features = false`. Every hardware backend there is already opt-in, so
this adds no meter to the cascade's dependency graph — just the type.

**The magnitude is unchanged, deliberately.** `ROUTING_JOULES = 8e-9` J is
0.008 µJ: below the integer-microjoule unit the protocol uses (`EnergyReading`
is `u64` µJ, and "floating-point is forbidden in the protocol for
determinism"), so it rounds to zero there, and six orders of magnitude below
the ~1 mJ floor `jouleclaw-energy` itself calls realistic for an `Estimator`
source. The significand is unjustified. Correcting it needs a measurement;
substituting a different invented number would repeat the error this change
exists to label.

Falsification found two real gaps in my own tests before this was right:

- Mutating `LearnedRouter`'s and `PhasorRouter`'s own `RoutingPlan` literals
  changed **nothing**, because the test exercised `RoutingPlan::fallback` for
  both — their constructions were never reached. Fixed by driving each past
  cold start with `record_outcome` and asserting `!plan.is_fallback()` *first*,
  so the test cannot silently slide back onto the path that pins nothing.
- Mutating `PrivacyRouter`'s composition to take the inner plan's class was
  **invisible**, because with every shipped router on `Estimator` the two
  expressions agree. Separating them needed a stub inner router claiming
  `HwShunt`, which pins the actual rule: a sum containing an unmeasured
  constant is an estimate, however good the measured term was.

All four mutations now fail exactly one named test each.

Lockfiles: both workspaces that name these crates are refreshed
(`jouleclaw/jouleclaw-rs`, `joule-code/examples/l3-jouleclaw`); 47 lockfiles
current.

Verified: workspace check 0 errors, 486 test binaries green, 0 failures;
`l3-jouleclaw` check 0 errors. The 10 clippy findings in these crates are
pre-existing, unchanged in count, and all in lines this change did not author
(`coord_router_impl.rs:241` shifted to `:242` behind an inserted line); neither
crate is in CI's clippy list.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-10-21 19:44:14 -04:00
..
conformance/v1 jouleclaw SPEC.md: normative §§8-12 for waves 12-21 2026-06-02 10:42:25 -04:00
jouleclaw-rs jouleclaw: a routing plan carries the class of its energy figure 2026-10-21 19:44:14 -04:00
scales compliance: publish the EU draft PUE bands as a sourced data pack, not as code 2026-09-06 06:24:25 -04:00
vocab jouleclaw: wave-24 — contract + handoff + mission + value report 2026-06-03 02:35:34 -04:00
LICENSE jouleclaw: standard skeleton + Phase 1 foundation crates 2026-05-26 09:55:11 -04:00
LICENSE-SPEC licences: ship the Apache-2.0 text the code already declares 2026-10-09 17:22:32 -04:00
README.md licences: ship the Apache-2.0 text the code already declares 2026-10-09 17:22:32 -04:00
ROADMAP.md docs: strip vanity metrics from README + ROADMAP 2026-06-02 07:30:50 -04:00
SPEC.md energy meters: a GPU counter reading low is refuted in sandbox-meter, eoc-meter and jcp-energy too 2026-10-20 04:15:36 -04:00

JouleClaw — Energy-Optimized AI Runtime

The substrate for AI that costs Joules, not tokens.

Capability per Joule, not capability per parameter.

What JouleClaw is

JouleClaw is a pure-Rust, omni-modal AI runtime + harness + agentic layer governed by Transaction Science as an open standard (5th in the open-standards quartet, alongside OpenPay, Smart Byte, EOC, and WAI).

Every operation JouleClaw performs walks an explicit energy-tiered cascade, top to bottom, stopping at the first stage that closes the query:

Tier Name Cost class What runs here
L0 Cache picojoules Content-addressed cache hits
L1 Lawful nanojoules Deterministic, pre-compiled primitive (text/code only)
L2 Embed sub-millijoules Matryoshka embeddings + nearest-neighbor + hybrid search
L3 Model joules Local SSM / ternary / multimodal / diffusion / etc.
L4 Wire tens of joules Remote frontier RPC (escape hatch only)

L1 (Lawful) is only meaningful for text and code modalities. For image, audio, video and 3D generation, the cascade collapses to L0 / L2 / L3 / L4 — the energy savings come from caching plus dispatch to the cheapest model that meets the quality bar.

Why JouleClaw exists

The mainstream "agentic AI" ecosystem treats inference as the entry point. Every state shift, every tool call, every routing decision runs through a 70-billion-parameter stochastic engine, burning kilojoules to do work that deterministic compute or a hot cache could resolve for microjoules.

JouleClaw inverts the default. Inference is the last resort, not the first. Frozen model weights are less trustworthy than current world state; fresh, provenance-stamped retrieval beats synthesis from training cuts. Every operation is metered in microjoules where the hardware permits it, and in millijoules where it doesn't — the spec is honest about the floor on every platform.

The thermodynamic circuit breaker is the safety mechanism. Set an energy budget; when measured consumption exceeds the budget, the breaker trips and the operation halts. Hallucination loops cannot survive an honest joule ledger.

What's here

Path Contents
SPEC.md JouleClaw v1 spec — cascade tiers, energy contract, receipt
CHARTER.md Stewardship pattern (shared across open-standards)
jouleclaw-rs/ Apache-2.0 Rust reference implementation
spec/ Tier specifications, energy provenance, receipt format
conformance/v1/ Signed wire vectors for cross-implementation verification

Reference implementation

jouleclaw-rs/ is the Apache-2.0 reference implementation in Rust. It runs on Apple Silicon (M3/M4/M5 with UMA + Metal 4 Tensor APIs), AMD Strix Halo / Ryzen AI Max, Intel Lunar Lake, NVIDIA Jetson, and discrete NVIDIA / AMD GPUs.

It is omni-modal: text, code, vision, audio, video, image diffusion, 3D Gaussian splatting, and cross-modal fusion all dispatch through the same energy-tiered cascade.

The MCP tool surface is a JCP consumer: jouleclaw-jcp wraps any jouleclaw-mcp metered tool so every dispatch is decided by the JCP runtime against a signed, metered Grant before a byte reaches the tool — the tool's identity is the content-addressed resource, the call's energy estimate is debited from the grant's joule budget, and every decision (allow and deny alike) seals as a JCR-1 receipt. An injected instruction can name an ungranted tool; it cannot make the gate dispatch it.

Status

v0.1.0 reference implementation in active development. The spec is draft status. Cross-implementation conformance vectors will land with v1.0.0.

License