# Q1010 — MCB API Suite

- Q number: Q1010
- Primary URI: https://4p-engine.com/q/Q1010
- Current host route: https://4p-engine.com/q/Q1010
- Reserved subdomain alias: https://q1010.4p-engine.com/

The first-party semantic item for the MCB API Suite: broad engine, core MCB, storage, and Native Intelligence API families governed by explicit access and operational boundaries.

> The MCB API Suite exposes implemented MCB and MCB-NI capabilities through bounded computational, semantic, storage, and Native Intelligence API families with explicit authentication, metering, tier, health, and evidence boundaries.

Q1010 describes the public API contract at the family level, not a complete router or endpoint inventory. Its broad families cover engine operations, core MCB computation and semantics, storage, and authenticated Native Intelligence capabilities.
Health is public only where explicitly declared. Protected API families enforce their configured API-key or session authentication; metering and tier limits apply where configured, and Native Intelligence access remains authenticated and account-scoped.
The intended API reference is /api/mcb/docs, with its machine-readable contract at /api/mcb/openapi.json. These references describe the supported MCB API contract and do not turn internal implementation routes into public Q1010 properties.
Operational availability and successful validation are evidence about software behavior, not proof that every proposition submitted by a client is true. Each response remains subject to its authentication, scope, rate, payload, and evidence rules.

## Two-way derivation from Logic and its use

**Status:** editorial_derivation proof sketch (contingent_identification), distinct from authored source. Logic has its own evidence in reflexive demonstration: any denial, confirmation, observation, or counterexample presupposes identity and valid relation to count as evidence. Logic therefore grounds evidence rather than receiving authority from it. Empirical and documentary evidence can establish contingent instances and test applications, but cannot create, overrule, or exhaust Logic.

### From Logic to this concept

- **Bridge premise:** An API route is intelligible only when method, path, input contract, response, authorization, and operation remain distinguishable and correctly related.
- **Consequence:** Logic plus that interface bridge derives the requirement for a bounded, authenticated catalog that describes actual registered routes rather than hypothetical capabilities.
- **Proof limit:** Logic does not entail that a given endpoint is currently mounted, secure, or correct; route declarations and runtime checks provide the contingent evidence.

### From this concept back to Logic

- **Witness:** Trace a specific request through its HTTP method, route match, middleware, handler, response schema, and denial case.
- **Disclosure:** The API works as a meaningful interface only because each stage preserves the request and its authority conditions; this exposes its dependence on identity and lawful relation.
- **Proof limit:** A registered route demonstrates availability within the inspected deployment, not truth of client content or success of all possible calls.

### Intelligence procedure

- **Human:** Before integrating an endpoint, check its exact method, schema, auth rule, error modes, and evidence boundary; test a negative/unauthorized call as well as success.
- **Machine:** Generate clients from the live catalog, type-check request and response schemas, enforce route-specific auth before execution, and treat unknown families as unsupported.

### Language and vocabulary procedure

- **Contrast:** An API contract describes an executable interface; an advertised capability may lack a mounted route or valid permission.
- **Usage rule:** Use endpoint, method, payload, authentication, response, and failure mode as distinct vocabulary when describing integration.
- **Example:** “POST /api/mcb/validate checks this payload under the route's declared auth; a 200 response reports execution, not truth of every submitted claim.”

## Semantic meaning frame

- **Role:** bounded capability execution surface
- **Essence:** A catalog of implemented MCB and MCB-NI route families with explicit contracts, authentication, metering, and evidence boundaries.
- **Logos relation:** Logos requires the API inventory to describe actual executable behavior and keep availability, authorization, validation, and truth distinct.
- **Retrieval aliases:** MCB API Suite · MCB APIs · MCB Engine API · MCB-NI API surface · capability execution plane
- **Evidence modes:** registered route graph · request and response contract · authentication and tier checks · runtime behavior

### Distinctions

- endpoint availability is not model truth
- route registration is not universal capability
- client content is not server evidence

## Coherence criterion

The API suite must preserve its documented family-level contracts, enforce configured authentication, metering, tier, health, and account-scope boundaries, and distinguish operational availability from the truth of client-supplied content.

## Evidence boundary

Q1010 is a considered, vetted first-party description of broad, implemented API families rather than an exhaustive endpoint inventory. The verifier must inspect registered family contracts, authentication, account scope, metering, and tier boundaries directly. The API documentation and OpenAPI reference provide the intended contract detail; availability, validation results, and response hashes are runtime evidence about software behavior, not proof of client-supplied claims.

## Properties

- **engineApi:** Computational engine capabilities, including an explicitly public health boundary and protected operations.
- **coreMcbApi:** Core MCB computation, memory, machine-semantics, and semantic interaction capabilities, subject to configured authentication, metering, and tier boundaries.
- **storageApi:** Structured storage, encoding, decoding, and related storage capabilities, subject to configured authentication, metering, and tier boundaries.
- **nativeIntelligenceApi:** Authenticated, account-scoped Native Intelligence capabilities; internal route details are not enumerated in this public contract.
- **operationalBoundary:** Health is public only where declared. Other access follows configured API-key or session authentication; metering and tier boundaries apply where configured, and Native Intelligence state is account-scoped.
- **apiDocumentation:** API reference: /api/mcb/docs; machine-readable contract: /api/mcb/openapi.json.

## Linked Q items

- [Q1000 — Q-Number Data and Metadata System](https://4p-engine.com/q/Q1000)
- [Q1007 — 4P Validator](https://4p-engine.com/q/Q1007)
- [Q1008 — MCB Theory](https://4p-engine.com/q/Q1008)
- [Q1009 — MCB-NI](https://4p-engine.com/q/Q1009)
- [Q1081 — Lean 4 Validation of Hunterian Philosophy](https://4p-engine.com/q/lean-4-validation-hunterian-philosophy)
- [Q1082 — Hunterian Axiom-Free Proof Network](https://4p-engine.com/q/hunterian-axiom-free-proof-network)

## Related Wikidata concept items

These are typed external concept links for discovery and comparison. They are not sameAs assertions, endorsements, or substitutes for the first-party source and evidence.

- [application programming interface (Q165194)](https://www.wikidata.org/wiki/Q165194) — **interface category:** A specification for interaction between software components. Boundary: The generic API concept classifies the interface model; it does not certify this suite's endpoints or availability.
- [client-side web API (Q20202982)](https://www.wikidata.org/wiki/Q20202982) — **web-interface context:** An application programming interface exposed for web-browser software. Boundary: This is a web API comparison context; Q1010 includes server-side authenticated routes and is not identical to the generic item.
- [software (Q7397)](https://www.wikidata.org/wiki/Q7397) — **implementation category:** A non-tangible executable component of a computer. Boundary: Software is the implementation category, not a statement that every API family is correct or production-ready for every use.