Session References
Structured cross-session reference requests and prepared message contexts. The package contract defines canonical URIs, current-surface projection, tag-safe JSON and byte retention, stable errors, and the untrusted model prompt. Host adapters use these types instead of passing their UI mention syntax into the agent core.
Source: packages/context/session-reference/src/types.ts
Inputs and candidates
SessionReferenceInput is the host-independent selection. The id is authoritative; the label is display metadata carried into the snapshot.
/** One source session selected by a host. */
interface SessionReferenceInput {
/** Opaque source session identity. */
sessionId: SessionId
/** Optional user-facing mention label. */
label?: string
}
SessionReferenceCandidate is host-facing discovery output. Its label uses the latest session title when present, while filtering still searches only session id and cwd and never transcript text.
/** One host-facing candidate from exact session metadata. */
interface SessionReferenceCandidate {
/** Opaque source session identity. */
sessionId: SessionId
/** Latest log-backed title, falling back to the opaque session id. */
label: string
/** Source session working directory, when recorded. */
cwd?: string
/** Source session creation time in Unix epoch milliseconds. */
createdAt: number
}
Prepared messages
Preparation preserves readable current-message content and returns at most one aggregated context.
/** Direct message content and optional referenced-session context. */
interface PreparedReferencedMessage {
/** Readable message content after host mention tokens are removed. */
content: ContentBlock[]
/** Aggregated untrusted snapshot, absent when the message has no references. */
additionalContext?: UserMessage
}
Errors
SessionReferenceError.code separates invalid configuration or input, self-reference, count limits, source-read failure, budget failure, and cancellation. Host protocols map these codes to their own error envelopes without inspecting prompt bytes.
/** Stable failure codes exposed to host adapters. */
type SessionReferenceErrorCode =
| 'SESSION_REFERENCE_INVALID_CONFIG'
| 'SESSION_REFERENCE_INVALID_REFERENCE'
| 'SESSION_REFERENCE_SELF_REFERENCE'
| 'SESSION_REFERENCE_TOO_MANY'
| 'SESSION_REFERENCE_READ_FAILED'
| 'SESSION_REFERENCE_BUDGET_EXCEEDED'
| 'SESSION_REFERENCE_CANCELLED'
Cordis API
Generated from source by scripts/gen-cordis-catalog.ts (verified fresh by pnpm run verify-cordis-catalog in doc-sync; regenerate with pnpm run gen-cordis-catalog) — this section is byte-identical in both language sides of the page. Signature blocks use a ts cordis-catalog fence and keep the original source JSDoc; dispatch modes are defined in the primer, and the framework-inherited ctx API lives in cordis-api/inherited.md.
ctx.sessionReferenceResolver — SessionReferenceResolver
Exact-read consumer that prepares immutable cross-session message context.
/**
* List reference candidates, ranked by working-directory affinity.
* @param agent - target agent; self is excluded and its cwd drives ranking.
* @param query - optional case-insensitive session-id/cwd/title substring.
* @param limit - optional positive result cap.
* @param signal - optional cancellation boundary for host autocomplete teardown.
* @returns candidates labeled by latest title or, when absent, session id.
*/
async listCandidates( agent: Agent, query: string = '', limit: number = this.config.candidateLimit, signal?: AbortSignal, ): Promise<SessionReferenceCandidate[]>
/**
* Snapshot all references before enqueue and return one aggregated durable context.
* @param agent - target agent; references to it are rejected.
* @param content - already host-normalized readable message content.
* @param references - structured source sessions in mention order.
* @param signal - optional cancellation boundary for host request teardown.
* @returns detached content and optional referenced-session context.
*/
async prepare( agent: Agent, content: ContentBlock[], references: SessionReferenceInput[], signal?: AbortSignal, ): Promise<PreparedReferencedMessage>
Types: Agent · ContentBlock