mem0ai/mem0 · error · Error

Failed to list vectors: ${error instanceof Error ? error.mes

Error message

Failed to list vectors: ${error instanceof Error ? error.message : String(error)}

What it means

Error "Failed to list vectors: ${error instanceof Error ? error.message : String(error)}" thrown in mem0ai/mem0.

Source

Thrown at mem0-ts/src/oss/src/vector_stores/vectorize.ts:247

          account_id: this.accountId,
          vector: Array(this.dimensions).fill(0), // Dummy vector for listing
          filter: filters,
          topK: topK,
          returnMetadata: "all",
        },
      );

      const matches =
        (result?.matches?.map((match) => ({
          id: match.id,
          payload: match.metadata,
          score: match.score,
        })) as VectorStoreResult[]) || [];

      return [matches, matches.length];
    } catch (error) {
      console.error("Error listing vectors:", error);
      throw new Error(
        `Failed to list vectors: ${error instanceof Error ? error.message : String(error)}`,
      );
    }
  }

  private generateUUID(): string {
    return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(
      /[xy]/g,
      function (c) {
        const r = (Math.random() * 16) | 0;
        const v = c === "x" ? r : (r & 0x3) | 0x8;
        return v.toString(16);
      },
    );
  }

  async getUserId(): Promise<string> {
    await this.initialize();

View on GitHub (pinned to 001c235229)

Solutions

1. Verify your Cloudflare account ID and API token have Vectorize read permissions.
2. Check that the index exists and the cursor/filters passed to list are valid.
3. Retry transient network failures with backoff.

When it happens

Trigger: Thrown at mem0-ts/src/oss/src/vector_stores/vectorize.ts:247 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of mem0ai/mem0@001c235229 (2026-08-15). Data as JSON: /api/errors/f1e42be4686ad244. Report an issue: GitHub.