Kit · Optional business libraries

Configuration, catalogs & policies

Open group

Symbol	Kind	Purpose
AgentCatalogPorts	interface	Ports the catalog reads from the App's registries.
CatalogGoal	interface	Goal as the catalog sees it: an id plus its declared delegates.
CatalogScope	interface	Scope as the catalog sees it: an id plus the tools it may use.
CatalogTask	interface	The goal currently accepted for the request, used to narrow the catalog.
CatalogTool	interface	Tool facts the catalog needs, independent of lifecycle details.
defineAgentCatalog	function	Compile a catalog projection over the App's live registries. The actual registries determine availability and relationships. No parallel capability list exists: goalIds filters by tool support, modelCatalog narrows to the currently accepted task when restrictToTask is enabled, and scope tool ids are filtered to tools that exist.
definePolicySet	function	Compile a policy set that reports every matching reason. Collect every matching reason; a configured mode cannot silently override a mandatory policy. assess returns the matched ids and deduplicated kinds rather than a single verdict, so callers keep the ordering information they need for messages and diagnostics.
defineRecoveryChain	function	Compile an ordered recovery chain. A handler reports whether it handled the input; handled undefined values remain explicit. The first handler that reports handled ends the walk, so declaration order is the precedence, and { handled: false } is the only way to fall through.
DescribedTool	interface	Model- or host-facing description of one tool.
Policies	constant
PolicyAssessment	interface	Result of assessing every registered policy against one input.
PolicyDefinition	interface	One declarative policy.
RecoveryDefinition	interface	One recovery handler in an ordered chain.
RecoveryResult	type	Outcome of one recovery handler, or of the whole chain.

Branches & versioning

Open group

Symbol	Kind	Purpose
AgentFamily	interface	Compiled family API. Every mutation returns the record after the write.
defineAgentFamily	function	Compile a versioned family backed by an App-owned compare-and-swap store. Every mutation reads the record, verifies the caller's expected revision, then commits with a compare-and-swap, so concurrent writers fail with a revision conflict rather than overwriting each other. Reads are also treated as policy checks because the App binds its read rules into the store it supplies.
Family	constant
FamilyDefinition	interface	App-owned hooks and limits for one family.
FamilyOperation	type	One of the four family mutations.
familyOperations	constant
FamilyRecord	interface	A whole family: its versions and which version is currently active.
FamilyStore	interface	CAS must cover every writer and the active pointer in one real storage commit.
FamilyVersion	interface	Immutable snapshot of App state at one point on a branch.

Observation & diagnostics

Open group

Symbol	Kind	Purpose
AgentOutputEvent	type	One output event of a delivered reply.
publishReplyEvents	function	Stream one reply as paced text chunks and bubble separators. Publish a validated reply without exposing its internal boundary to consumers. The pacing options are upper bounds, not exact timings: the pause and interval are clamped against maxDurationMs, so added delay never exceeds the budget while every chunk is still emitted.
REPLY_BUBBLE_BOUNDARY	constant
ReplyBubbleInput	interface	Reply pieces accepted by the bubble helpers; non-string entries are ignored.
replyBubbleTexts	function	Collect the non-empty-text parts of a reply.
ReplyDeliveryOptions	interface	Host-controlled delivery of already validated text; not upstream model generation.
serializeOutputEvents	function	Serialize the event protocol for callers using a text stream. preview events are dropped because they are not final text; bubbles become the boundary character again, so a consumer can re-split the stream.
textOutputEvents	function	Wrap already-chunked text as text events.

Shared contracts & helpers

Open group

Symbol	Kind	Purpose
Aggregation	constant
Candidates	constant
CandidateSelectionDefinition	interface	Declares the alternative-proposal envelope. A value without the declared field is treated as a single implicit candidate.
ContentProjection	interface	Projection output.
ContentProjectionOptions	interface	Candidate strategy for content projection.
createIntentRegistry	function	Create and seal a complete catalog; use the constructor for incremental installation.
defineCandidateSelection	function	Compile an alternative-proposal envelope contract. Alternative proposals are bounded and shallow; accepting a task closes this capability. A value that is not an object, or that does not carry the candidate field, is treated as a single implicit candidate and returned as-is. Once the envelope is present it must contain only that field, and its array must hold between minCandidates (default 1) and maxCandidates distinct candidate objects that do not themselves repeat the field.
defineContentProjection	function	Compile a JSON-preserving projector. Keep valid JSON while reducing prose before dropping records; budgets are caller policy. The candidate list is tried in order (outer counts, inner lengths), so callers control whether trimming text or dropping items is preferred, and the configured fallback is used only when no candidate fits.
defineDelivery	function	Compile a delivery pipeline from its declared stages. Stages are registered once, in declaration order, and must have unique non-blank ids. A stage without a handle is a named hook only, so beforeStage can observe it.
defineNormalization	function	Compile an ordered normalization pipeline. Steps run in declaration order. Each step may be skipped by its when predicate, receives the value produced by the previous step, and isComplete can stop the walk early, so the usual contract is "first completion wins" rather than "always run everything".
defineQueryAggregation	function	Compile one ordered read plan over a list of inputs. Ordered synchronous queries with optional stable-key merging; each real read stays host-owned. Inputs run sequentially in the given order, so a host can rely on a deterministic visit sequence. Without key every item is kept; with key the last write wins per key but the position of the first occurrence is retained.
defineTextSkillLoader	function	Compile a loader that validates registrations and reads their documents. The default contract is narrow by design: ids are lower-case words joined by hyphens (up to maxIdChars, default 64), each entry lives at <id>/SKILL.md, the kind is text-workflow, and the document starts with name/description front matter.
defineTreeProjection	function	Compile a depth-limited tree transform. Traverse synchronously in property/array order; only undefined omits a result. Because a visitor returns a new value instead of mutating, an omitted branch disappears from arrays and objects the same way, and maxDepth bounds both cycles and cost.
Delivery	constant
DeliveryOptions	interface	Pipeline construction options.
DeliveryStage	interface	One pipeline stage, identified for reporting and optional observation.
IntentDescription	type	Registered domain Tool with its delegates widened to the definition's delegate literals.
IntentId	type	Union of the ids of a definition set, or string when it cannot be narrowed.
IntentPolicy	interface	Registration rules for one intent registry.
IntentRegistry	class	Goal semantics and allowed values are configuration; the registry owns their common lifecycle. Registration order is preserved by ids, definitions, values and entries; once seal() is called the set is final and further registration is rejected.
IntentTool	interface	One domain Tool.
IntentToolRegistration	type	Configuration form; object arguments and a Tool proposal are the registration defaults.
mergeByKey	function	Merge duplicates without moving their first position; selection policy remains host-owned. The first occurrence of a key fixes the output position; select decides which item that position finally holds, so callers can prefer the newest or the most complete duplicate.
ModelBinding	interface	App-defined I/O. Registered literal IDs determine input and output types.
ModelCalls	class	Frozen catalog of model bindings plus a checked invocation entry point. Registration happens once in the constructor; the catalog is never mutated afterwards, so a caller cannot swap a provider in the middle of a run.
ModelInvocationContext	interface	One take consumes one binding invocation attempt, independent of batch size or chat tokens.
ModelInvocationRequest	interface	One model call: registered binding id, the input to hand over and its timeout.
Normalization	constant
NormalizationOptions	interface	Pipeline options.
NormalizationStep	interface	One ordered transformation.
projectContinuousExcerpt	function	Project a continuous excerpt of a body by binary-searching the longest prefix that fits. Binary-search a continuous prefix and keep an existing surrogate pair intact. render receives the prefix length, not the text, so the caller decides how the excerpt is framed.
Projection	constant
QueryAggregationOptions	interface	Query aggregation contract: several ordered reads collapsed into one item list. Place in the package: an optional App-side helper for merging results of the same query shape run against several inputs. The Kit owns ordering and optional stable-key merging; every real read, the merge policy and the meaning of an item stay with the App. Exports: QueryAggregationOptions.
RegisteredIntent	type	Frozen registration view: list fields are frozen copies, helper methods are dropped.
splitTextBlocks	function	Split long plain text on structural boundaries. Headings and horizontal rules start a new block, blank lines end the current one, and all other lines break only when the target size would be exceeded. A single line longer than the target becomes its own block so that paging can cut it into fragments later without splitting the line into unrelated sections. Concatenating every block reproduces the input exactly: no truncation, padding or dropped whitespace. The input must be plain text; binaries and rich documents are read elsewhere.
TextBlock	interface	One structure-aware block of a long text.
TextBlockOptions	interface	Splitting options.
TextBlocks	constant
TextSkill	interface	Loaded skill: registration plus the parsed document text.
TextSkillHeader	interface	Header every skill document must carry.
TextSkillLoader	interface	Compiled loader.
TextSkillLoaderDefinition	interface	Loader limits, parsing hooks and rejection wording.
TextSkillReadPorts	interface	Host port that reads one skill document by path.
TextSkillRegistration	interface	Catalog entry of one text skill, before its document is read.
TextSkills	constant
TreeProjectionOptions	interface	Depth- and record-level traversal options for tree projection.
uniqueBy	function	Stable deduplication preserves the original values; the host chooses equivalence. The first occurrence of each key wins and the input order is kept, so callers can rely on deduplication never reordering their list.

Knowledge, answering & presentation

Open group

Symbol	Kind	Purpose
AnswerCheck	interface	Result of one local or review check over a generated answer.
AnswerChecker	interface	One named check applied to a generated answer value.
AnswerFlowDefinition	interface	Static handlers and limits; signal, diagnostics and App dependencies arrive at run.
Answering	constant
AnswerIssue	interface	Validation problem produced while checking a generated answer.
AnswerItem	interface	One unit an answer batch must produce.
AnswerReader	interface	App-owned reader that gathers evidence for one task.
AnswerResult	interface	Final outcome for one item.
AnswerTaskDefinition	interface	Static binding of one answerable task.
AnswerTaskPorts	interface	Registries a task catalog validates its references against.
CompiledReplyFormat	interface	A resolved format with its checks bound; callers only inspect replies using it.
defineAnswerCheckCatalog	function	Compile a checker catalog. A checker may return a replacement value; it is threaded into the next checker, so the selected ids behave like an ordered chain rather than independent assertions.
defineAnswerFlow	function	Compile a reusable answer workflow. Reusable answer workflow. Requests own cells and repair budgets; models remain caller-owned. The flow runs at most maxRepairs + 1 rounds: one generation pass, then one repair round per failing item set, and finally an explicit accepted/fallback/blocked result per item.
defineAnswerReaderCatalog	function	Compile a reader catalog.
defineAnswerTaskCatalog	function	Compile the answer task catalog from its declarations and shared ports. Task ids, schemas, readers, outputs and checks have one compiled authority: a task can only reference a reader or check that the ports actually registered, and metadata is cloned and frozen so later mutation by the caller cannot change a registered task.
defineKnowledgeCatalog	function	Compile a knowledge catalog from document declarations. Reads are declarative: document returns the whole text, self returns exactly the named sections and subtree includes their nested sections. Section ids are validated up front, so a typo fails at read time instead of silently returning partial content.
defineKnowledgePublication	function	Compile a publication lifecycle over one App-owned atomic record. Candidate preparation and publication share the same compiler and an App-owned atomic revision. propose compiles and validates a candidate but leaves published documents alone; publish re-verifies sources and the base revision before swapping, so a stale candidate can never overwrite newer content.
defineOutputCatalog	function	Compile output definitions into one catalog. Compilation is where most mistakes surface: group membership is checked for cycles, master templates must have exactly one slot per field, and every bound/semantic field must name a registered provider. Composition then trusts the compiled catalog.
defineReplyFormats	function	Compile reply formats so that checks run only for templates the current turn uses.
defineSemanticSlots	function	Models select public semantic keys; hosts retain private values and selection policy. A text is valid when it uses at most maxOccurrences namespaced slots, every name is a declared key, and no malformed {{namespace remnant is left behind — the last check stops partial or misspelled placeholders from reaching the template engine.
defineTextTemplate	function	The program owns the master; inserted model text is a value and is substituted once only. Substitution is single-pass String.replace: a value that itself contains {{slot}} is left as literal text, so a slot value cannot inject further substitutions.
Knowledge	constant
KnowledgeCandidate	interface	A proposed document awaiting publish or reject.
KnowledgeCatalog	interface	Compiled catalog of knowledge documents.
KnowledgeCatalogOptions	interface	Catalog construction options.
KnowledgeDocument	interface	One versioned document as supplied by the App.
KnowledgePart	type	Document content: a text leaf or a nested section.
KnowledgePublication	interface	Compiled publication workflow.
knowledgePublicationOperations	constant
KnowledgePublicationOptions	interface	App-owned guards, store and limits for a publication workflow.
KnowledgePublicationRecord	interface	Stored publication state: one published revision plus pending candidates.
KnowledgePublicationStore	interface	Single-writer store for the publication record.
KnowledgeRead	interface	A request for one document selection.
KnowledgeSection	interface	A named section that may contain text and further sections.
KnowledgeSnapshot	interface	Materialized read result.
KnowledgeSourceReference	interface	Citation of the material a candidate was derived from.
mergeReplyBubbles	function	Normalize a reply that has no declared format: drop blank bubbles and merge overflow into the last allowed one. Text content is preserved.
OutputCatalogOptions	interface	Catalog construction options.
OutputComposeInput	interface	Input for composing one output: model values plus program-assigned group members.
OutputDefinition	interface	One output shape.
OutputField	interface	One field of an output definition.
OutputIssue	interface	Output problem with a guaranteed field path.
OutputProvider	interface	App-owned value provider for bound and semantic fields.
OutputResult	interface	Composed output value.
parseKnowledgeDocument	function	Paired, nestable anchors are one text adapter. Other sources supply the same document contract directly.
Presentation	constant
ReplyFormatCheck	interface	One check a template declares, evaluated against the rendered bubbles.
replyFormatChecks	constant
ReplyFormatDefinition	interface	A template-bound reply format, matched against per-turn facts.
ReplyFormatOptions	interface	Declaration input for defineReplyFormats.
resolvePreference	function	Resolve the preferred candidate. Highest priority wins; order breaks ties with the later entry first, so recency can be encoded without touching priority. The input array is copied before sorting.
SectionSelection	type	Which part of a document a read returns.
selectVariant	function	Pick one variant, avoiding an immediate repeat when alternatives exist. When every candidate equals previous, the full list is used again, so a single-value set still yields a result instead of failing.
SemanticSlotDefinition	interface	Declares the {{namespace:key}} slots a model may use, and how often.
TextTemplateOptions	interface	Text template construction options.
validateAnswerBatch	function	Validate that one batch is well formed and fully covered.

Artifacts & recovery

Open group

Symbol	Kind	Purpose
ArtifactReference	interface	References locate artifacts; only the App resolver establishes access and current validity.
ArtifactResolver	interface	App-registered resolver that turns a reference into an App value.
Artifacts	constant
defineArtifactCatalog	function	Compile a catalog of artifact resolvers plus a checked resolve entry point.
defineDurableTask	function	Compile a durable task definition into a resumable runner. Each run call locks the task id in the store, loads the checkpoint and resumes at nextStepIndex. A checkpoint from another definition id or revision, or one that fails the predicates below, is rejected instead of being repaired, because silently accepting it would replay App side effects under a different contract.
Durable	constant
DurableCheckpoint	interface	Persisted task progress; the only state a resume reads back.
durableReplayPolicies	constant
durableStatuses	constant
DurableStep	interface	One step of a durable task.
DurableStepContext	interface	Execution facts handed to a durable step.
DurableStore	interface	App implements an exclusive lock across every writer and validates/serializes stored state.
DurableTask	interface	Compiled task: resumes from the store and returns the final state.
DurableTaskDefinition	interface	Task definition, including the App hooks that guard every resume.
DurableTaskOptions	interface	Runtime options for a compiled durable task.

Models & interaction

Open group

Symbol	Kind	Purpose
bindInteraction	function	Bind every registered transfer command to a local handler. Models cannot add handlers.
Command	interface	Compiled command.
CommandCatalog	class	Mode and cross-protocol field ownership checks are shared by all receiving hosts. The catalog seals itself as soon as construction finishes, so a run cannot register a new command later; set remains available only for the superclass installation pass.
CommandCatalogOptions	interface	Envelope-level options for a command catalog.
CommandDefinition	interface	Declarative command shape before compilation.
commandSchema	function	Build a JSON schema for one command id. Prefer compiled schemas; retain the existing open-schema contract for dynamic host protocols. A protocol without fieldSchemas falls back to an open object that only pins the discriminator, which keeps legacy hosts working without weakening compiled ones.
compileCommands	function	Compile a whole catalog with shared envelope fields. Applications declare only their own data and handlers. Defaults are merged in this order: unrelated default keys, then the command's own keys, with fields, checks and tags concatenated so shared envelope checks always run before per-command checks.
defineCommand	function	Compile declarations once. Parsing is synchronous and never executes a registered tool. Two schemas are produced from one declaration: modelJsonSchema marks only fields the model must fill, while inputJsonSchema marks every required field. A discriminator, when present, is prepended as a required constant field.
defineCommandCatalog	function	Compile definitions and wrap them in a sealed catalog.
defineInteractionProtocol	function	Construct a protocol from one definition.
INTERACTION_CATEGORIES	constant
InteractionCategory	type	Interaction purpose, never an authorization level or an assertion of execution success.
InteractionDescriptor	interface	Catalog metadata for one command, independent of its field shape.
InteractionHandlers	type	Handler map keyed by command id; each handler receives the parsed value and App context.
InteractionProtocol	class	Web/AI payload family. HTTP/SSE framing and actual command execution remain separate ports. Every command registered here gets the envelope's discriminator forced to its own id, so a payload cannot claim one command while carrying another command's data.
InteractionProtocolDefinition	type	Transfer envelope plus its registered command family; no change to HTTP or SSE framing.
ProtocolCheck	interface	One declarative rejection rule.
ProtocolField	interface	Field presence, schema and ownership are declared together; schemas describe model input.
ProtocolPredicate	type	Predicate evaluated during validation; any truthy result counts as a failure.
ProtocolReason	type	Lazy rejection wording: a fixed message, a pre-built error, or a factory bound to the value.
ProtocolShape	interface	Custom protocols may derive dynamic keys without supplying a compiled schema.
RegisteredProtocol	interface	Runtime extension contract; hosts retain their own version values and validation context.

MockGPT · Mock models & debugging

Open group

Symbol	Kind	Purpose
CallRecord	interface	Detached snapshot of one accepted call, exposed through MockGPT.records.
createMockHandler	function	Create a bare Node request listener backed by the mock.
createMockServer	function	Create a self-contained mock HTTP server with explicit listen/close control. No UI or static assets are served: only the model routes answer, everything else is a 404.
encodeModelResponse	function	Optional app-owned codec; validation and encoding consume the same snapshots. Thin public wrapper over encodeModel: re-validates identity arguments and re-snapshots both the request and the model output, so callers that build replies themselves get identical validation and cannot mutate the mock's state afterwards.
Generated	type	What a rule may produce: plain data, or a descriptor that changes transport behaviour.
GenerationContext	interface	Everything a rule or generator may read for one accepted call. The context is frozen; the only mutable side channel is report, and only while the call is still pending.
GenerationInput	interface	Input of MockGPT.generate. Normalized exactly like an HTTP request body, so a rule matches identically through both entry points; only model and messages are required.
GenerationOptions	interface	Per-call options of MockGPT.generate.
Generator	type	A rule's output: either a fixed value (deep-copied and frozen when the instance is built) or a function evaluated per call. A function may be async and is awaited under cancellation.
generatorNames	constant
generators	constant
HandlerOptions	interface	Options shared by the standalone server and the bare request handler.
HttpFault	interface	A simulated HTTP-level failure returned instead of a model reply.
isPublicAddress	function	Decide whether an address is an acceptable public destination.
JsonValue	type	Any value accepted by the package's JSON snapshot rules: strings, finite numbers, booleans, null, arrays and plain objects.
LoadedPage	interface	A fetched page body plus the metadata needed for decoding and diagnostics.
Message	type	One entry of an OpenAI chat conversation. The runtime validates role against the OpenAI role set and validates the outer shape of content; every other field is retained verbatim so vendor extensions flow through.
MockGPT	class	Configurable mock model instance. Create one per test or per mock server.
MockGPTError	class	Error type carrying a stable machine-readable code plus optional HTTP status and details. The HTTP adapter maps status onto the response and serializes code/details into the OpenAI-style error body, so codes are part of the public contract.
MockGPTOptions	interface	Construction options of a MockGPT instance.
ModelOutput	interface	The model-authored part of a reply, before it becomes JSON or SSE frames.
ModelRequest	interface	A normalized /chat/completions request, produced by snapshotRequest. Optional undefined fields have already been dropped and stream is already defaulted, so rules always observe the same shape regardless of whether the caller used generate or the injected fetch.
OutputOptions	interface	Transport-level knobs of a generated response. All values are simulated: they affect framing and timing of the mock reply, not real model behaviour.
ResponseDescription	class	Wrapper that distinguishes a transport instruction from ordinary generator data. kind: 'model' carries a ModelOutput, 'http' an HttpFault response, and 'reject' a message used to simulate a network failure. Instances are recognized by brand rather than by instanceof alone, so descriptors survive crossing the ESM/CJS boundary.
responses	constant
routes	constant
Rule	interface	One ordered matching rule of a MockGPT instance.
ServerOptions	interface	Options of createMockServer, adding shutdown behaviour.
sources	constant
TextOptions	interface	Common options of the text generators.
TextSource	type	Text supplied to a text generator. A function may be async; it receives the per-call context so a source can depend on the prompt or on the call index.
ToolCall	interface	A tool call the mocked assistant emits instead of executing.
Usage	interface	Token accounting reported by the OpenAI API; validated for internal consistency.
WebOptions	interface	Configuration of sources.web.
WebProfile	type	Name of an entry in webHeaderProfiles.

Intents & scopes

Open group

Symbol	Kind	Purpose
createScopeRegistry	function	Create and seal a complete catalog; use the constructor for incremental installation.
RegisteredScope	type	Frozen registration view: every list is a frozen copy, evidence entries are projected.
RegisteredScopeEvidence	type	Registered evidence entry: public data only, frozen by the registry.
ScopeDefinition	interface	One declarable scope. Ids and aliases share one namespace and must be unique.
ScopeDescription	type	Plain description with mutable arrays, for documentation and model-facing catalogs.
ScopeRegistry	class	Generic scope relationships; categories, intent policy and extra fields belong to the host. A scope is addressable by its id or by any of its aliases; aliases resolve to the declaring scope, and a name may be claimed only once across both namespaces.
ScopeRegistryPolicy	interface	Registration rules for one scope registry.

Retrieval & evidence

Open group

Symbol	Kind	Purpose
defineEvidenceChecklist	function	Compile a reusable completion checklist over actual observations. A requirement is satisfied when at least one observation satisfies the provider registered for its kind; isComplete requires every requirement to be satisfied, and missing returns those that are not. Hosts define evidence semantics.
defineEvidenceProjection	function	Compile a projection that keeps only the sources a caller asked to see. No selection retains the complete evidence; a selection narrows registered source-bearing results. Observations whose tool has no provider pass through untouched, so the projection can only ever remove sources it knows how to name.
defineRetrieval	function	Compile a retrieval runner from its declared ports and effects. Rejected queries stay in the caller's seen set, so a retry is reported as a duplicate instead of silently repeating the adapter call; only successful results increment the query count.
Evidence	constant
EvidenceProjectionDefinition	interface	Projection configuration, keyed by the tool that produced an observation.
EvidenceProjectionProvider	interface	Describes which sources an observation can cite, and how to narrow it to cited ones.
EvidenceProvider	interface	Adjudicates one evidence kind against real observations.
EvidenceRequirement	interface	Requirements describe evidence that must already exist, never a model's assertion of success.
FusedRank	interface	One fused result with the per-source ranks that produced its score.
RankedList	interface	One retriever's ordered result, optionally weighted.
reciprocalRankFusion	function	Fuse ranked lists with one-based reciprocal rank fusion. Raw retriever scores are intentionally not mixed. Ties break on id, so the output is deterministic for a given input.
Retrieval	constant
RetrievalDefinition	type	Retrieval ports specialized to an App operation context.
RetrievalEffect	interface	One effect applied after a successful query, in declaration order.
RetrievalPorts	interface	Host ports and policy for one retrieval kind.
RetrievalReason	type	Lazy rejection wording: a fixed message, a pre-built error, or a factory bound to the query.
RetrievalReceipt	interface	Facts of one accepted query.
RetrievalResult	interface	Adapter output for one accepted query; the Kit renames each source before returning it.
RetrievalRunner	interface	Compiled retrieval runner.
RetrievalSource	interface	Request-local citation reference; the App may separately carry its content entity id.
RetrievalState	interface	Request-owned state. Clearing current evidence must not replenish spent budgets or seen keys.
TextSearch	class	Optional App-side full-text index. No storage, identity, model calls or Core dependencies. Only declared fields are indexed and only storedFields come back with a hit, so a document never leaks extra properties into search results.
TextSearchHit	interface	One ranked match; terms are post-tokenization and only stored fields are returned.
TextSearchOptions	interface	App supplies fields, tokenizer and its own schema/tokenizer revision.
TextSearchQuery	interface	Search input: a hard result limit and an App-owned filter, both required on every query.
TextSearchSnapshot	interface	Serialized index; the revision pair proves the snapshot matches the current configuration.
VectorSearch	class	Exact cosine search for a bounded embedded corpus. Identity and metadata are App-owned. Vectors arrive as plain arrays and are stored normalized in Float32Array form, so query time only needs a dot product per candidate.
VectorSearchHit	interface	One search hit; the document is a cloned snapshot, not the indexed instance.
VectorSearchQuery	interface	Search options excluding the query vector, which search takes alongside them.
VectorSearchSpace	interface	Embedding space identity and width; vectors from another space must never be mixed in.

Log review & evidence reports

Open group

Symbol	Kind	Purpose
defineReflection	function	Compile a reflection task. Model-driven investigation through ordinary registered tools and the existing Core loop. The task always reports persisted: false: storing a report is the App's decision. Observed findings must cite evidence ids that were actually returned in this run, which is what keeps the report tied to real observations instead of model recall.
defineReflectionLogSource	function	Build a reflection source over a log reader. Coverage is reported as best-effort: a page is only complete when the reader exhausted the run without capture gaps or omitted issues, and every gap or issue code is surfaced instead of being silently dropped.
Reflection	constant
ReflectionDefinition	interface	Configuration for compiling a reflection task.
ReflectionEvidence	interface	Explicit metadata projection, not an arbitrary original event/payload.
ReflectionFinding	interface	One finding, always tied to the evidence it rests on.
reflectionFindingKinds	constant
reflectionIdentityFields	constant
ReflectionLogReader	interface	Structural port: the App supplies its own FileLogReader, trusted scope and current authorization.
ReflectionPage	interface	One page of evidence plus an honest statement of its coverage.
ReflectionQuery	interface	One evidence query.
ReflectionReport	interface	Request-local reflection result.
ReflectionSource	interface	App-owned evidence source, including its own authorization.
ReflectionTask	interface	Compiled reflection task.

Tools & capabilities

Open group

Symbol	Kind	Purpose
LifecycleHooks	interface	Everything one tool declares for a request. Declaring id turns the tool into an invocation owner, so protocol and call become required in practice; the registry rejects a partial declaration. Every other hook is optional and returning nothing expresses "no opinion".
LifecycleProtocol	interface	Output protocol carried by a tool lifecycle.
Policy	interface	Registration policy shared by every tool in the registry.
RegisteredToolDefinition	type	Registered snapshot with frozen goal ids and projected hooks.
Tool	interface	A registered tool: model metadata plus one optional lifecycle block.
ToolFinalizer	type	Converts an executed decision into the tool result; must be synchronous.
ToolLifecycleRegistry	class	Registry of tools whose lifecycle, protocols and context contributions the App declares. Registration is only possible before seal(); afterwards the catalog is read-only, so a run cannot change which tools exist. Every hook is optional and is applied in registration order, which is why registerAll preserves iteration order.
ToolModelField	interface	One model-context field contributed by a tool.
ToolNormalizer	type	Converts untrusted input into a decision; must be synchronous.
ToolProtocol	type	Protocol type of a tool's lifecycle invocation.
ToolRegistration	type	Declaration form; the registry derives the ModelTool projection from existing handlers.
ToolRuntimeTypes	interface	One schema binds lifecycle handler types without introducing platform fields into core.
ToolsOptions	interface	Construction options for a tool registry.