Session References

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

Source: packages/context/session-reference/src/index.ts:70