mem0ai/mem0 · error · Error

Failed to delete vector: ${error instanceof Error ? error.me

Error message

Failed to delete vector: ${error instanceof Error ? error.message : String(error)}

What it means

Catch-all around Cloudflare Vectorize deleteByIds: deleting a vector by id failed and the error is rethrown wrapped as 'Failed to delete vector: <message>'. Missing ids do not error in Vectorize — this throw means the API call failed (auth, wrong index/account, network).

Source

Thrown at mem0-ts/src/oss/src/vector_stores/vectorize.ts:200

      }
    } catch (error) {
      console.error("Error updating vector:", error);
      throw new Error(
        `Failed to update vector: ${error instanceof Error ? error.message : String(error)}`,
      );
    }
  }

  async delete(vectorId: string): Promise<void> {
    await this.initialize();
    try {
      await this.client?.vectorize.indexes.deleteByIds(this.indexName, {
        account_id: this.accountId,
        ids: [vectorId],
      });
    } catch (error) {
      console.error("Error deleting vector:", error);
      throw new Error(
        `Failed to delete vector: ${error instanceof Error ? error.message : String(error)}`,
      );
    }
  }

  async deleteCol(): Promise<void> {
    await this.initialize();
    try {
      await this.client?.vectorize.indexes.delete(this.indexName, {
        account_id: this.accountId,
      });
    } catch (error) {
      console.error("Error deleting collection:", error);
      throw new Error(
        `Failed to delete collection: ${error instanceof Error ? error.message : String(error)}`,
      );
    }
  }

View on GitHub (pinned to 001c235229)

Solutions

1. Check the inner message: 401/403 -> grant the token full Vectorize edit permission; 404 -> verify indexName and accountId.
2. Retry transient network/5xx failures.
3. If the goal is a full reset, deleteAll/deleteCol recreates state cleanly instead of per-id deletes.

try { await memory.delete(id); } catch (e) { const m = e instanceof Error ? e.message : ''; if (m.startsWith('Failed to delete vector:')) { if (isTransientInner(m)) await retryWithBackoff(() => memory.delete(id), 2); else throw new Error(`Vectorize delete failed: ${m}`); } else throw e; }

When it happens

Trigger: memory.delete(id) with a token lacking delete permission; indexName/accountId mismatch; Cloudflare API or network failure; the index having been purged/recreated.

Common situations: Least-privilege tokens missing the delete scope; stale indexName after recreation; transient 5xx.

Related errors

• Failed to get vector: ${error instanceof Error ? error.messa
• Failed to insert vectors: ${response.status} ${errorText}
• Failed to insert vectors: ${error instanceof Error ? error.m
• Failed to search vectors: ${error instanceof Error ? error.m
• Failed to update vector: ${response.status} ${errorText}

AI-assisted analysis of mem0ai/mem0@001c235229 (2026-08-15). Data as JSON: /api/errors/d550e13231a72abd. Report an issue: GitHub.