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The reservation and the replay claim are one write in the connector's replay store; a failed ledger write runs nothing. Amounts are integer micro-USD with checked arithmetic, and the service derives every cost from usage and the configured price. One function, ProviderCall::charge, decides the charge: a result bound to its request and caller pays its true cost with a truthful overrun, anything else pays the reservation (ruling spend-bills-on-identity-not-validity). Each caller has a spend ceiling over fixed epoch-aligned windows in its root-owned config (connector-spend-caller-window-ceiling); the admission window is monotonic, so a clock stepping back cannot reopen budget, and a clock-locked caller is refused ClockBehindAdmissionWindow (spend-window-clock-ahead-fails-closed). Refusals CostBound, SpendCeiling and ClockBehindAdmissionWindow are typed. Spec eureka-body:cut_spec:cut-connector-spend.r1; reports h1-h5; Soul s5 holds (verdict eureka-body:verdict:cut-connector-spend.s5). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> |
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| schemas | ||
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| Cargo.lock | ||
| Cargo.toml | ||
| LICENSE | ||
| README.md | ||
ModelConnector
The connector kit for GameCult minds: one typed, encrypted, replay-safe contract between a caller that needs a model turn and a daemon that holds the provider credential, so no project wires its own provider calls.
Status: the model-connector crate is live. No connector binary exists yet
(the Claude connector is first, then an OpenAI-compatible one).
Entry points
Crate crates/model-connector:
src/contract.rs- the v3 wire contract (gamecult.model.*.v3):ProviderRequest,TransportInvocation,TransportResult,TransportReceipt, the typedStopReason,FailureKindandRefusal,InputItem::ReasoningState(a provider's opaque reasoning block, replayed by callers verbatim viaTransportResult::transcript_items; the service refuses another provider's state in the in-flight tool exchange and drops it from earlier turns), and the canonical byte and digest functions that bind a result to its request. Every document is named MessagePack with unknown fields refused.src/envelope.rs- the AES-256-GCMTransportEnvelope(binary ciphertext), its identity-binding AAD, the length-prefixed framing, and the CultNet carriage: each frame is acultnet.operation_request.v0/operation_response.v0for servicegamecult.model.connector, operationinvoke, itsmessage_idthe request id and its payload the base64 of the sealed envelope.schemas/- one JSON Schema per v3 document, generated from the types.src/client.rs-ConnectorClient, the one-request caller side.src/service.rs(featuredaemon) -TransportService: caller admission, durable replay (a retried request is answered byte-identically and the provider runs once), in-flight and capacity refusals.src/serve.rs(featuredaemon) -serve(), the loopback accept loop, over theProviderBackendtrait. A connector binary implementsProviderBackendfor its provider and callsserve; the kit names no provider.
Frame arithmetic is public in src/envelope.rs, measured on the carriage frame: frame_bytes_for_payload(n) is the frame a
caller payload bound of n needs, payload_bytes_for_frame(frame) is the largest payload bound
a frame allows, and MAX_IDENTITY_BYTES (256) bounds caller ids, request ids and model names.
serve refuses a frame/payload pair that violates them (ServeError::FrameBound states the frame
needed); the smallest legal frame is frame_bytes_for_payload(MIN_PAYLOAD_BYTES). A request id past
the bound is refused on the wire as Refusal::Malformed, the reply echoing the id (the connection is dropped only if that reply cannot fit the frame); ConnectorClient refuses such an id locally with RequestIdTooLong.
The default feature set compiles contract, envelope and client only. The kit speaks v3 only: a v2 frame gets no answer.
Verify
cargo test --locked --workspace
cargo test --locked --workspace --features model-connector/daemon
crates/model-connector/tests/wire_golden_v3.rs pins the v3 documents and one sealed carriage
frame to the fixtures in crates/model-connector/tests/fixtures/wire_v3 (regenerate with
WIRE_V3_REGENERATE=1; see the fixtures' README), and
crates/model-connector/tests/published_schemas.rs fails when schemas/ differs from the types
(MODEL_CONNECTOR_REGENERATE_SCHEMAS=1 rewrites it).
Provenance and license
AGPL-3.0-only. See LICENSE.
The contract, envelope, client, replay service and serve loop were lifted from CodexConnector at fd7cec4, formerly PolyForm Noncommercial. Its sole copyright holder relicensed the lifted material as AGPL-3.0-only for this repository.