Algolia Common Errors

Algolia Common Errors

Overview

Quick reference for the most common Algolia errors, their root causes, and fixes. All examples use algoliasearch v5 client error types.

Error Reference

1. Invalid Application-ID or API key (403)

ApiError: Invalid Application-ID or API key

Cause: App ID or API key is wrong, expired, or deleted.

Fix:

# Verify your env vars are set
echo "APP_ID: $ALGOLIA_APP_ID"
echo "KEY set: ${ALGOLIA_ADMIN_KEY:+yes}"

# Test with curl
curl -s "https://${ALGOLIA_APP_ID}-dsn.algolia.net/1/indexes" \
  -H "X-Algolia-Application-Id: ${ALGOLIA_APP_ID}" \
  -H "X-Algolia-API-Key: ${ALGOLIA_ADMIN_KEY}" | head -c 200

Get fresh keys: dashboard.algolia.com > Settings > API Keys.

2. Method not allowed with this API key (403)

ApiError: Method not allowed with this API key

Cause: Using a Search-Only key for a write operation (saveObjects, setSettings, etc.).

Fix: Use the Admin API key for write operations. Search-Only keys only permit search ACL.

// Wrong: search-only key for indexing
const client = algoliasearch(appId, searchOnlyKey);
await client.saveObjects({ ... }); // 403

// Right: admin key for indexing
const client = algoliasearch(appId, adminKey);
await client.saveObjects({ ... }); // Works

3. Index does not exist (404)

ApiError: Index products_staging does not exist

Cause: Searching an index that hasn't been created yet. Algolia creates indices lazily on first saveObjects.

Fix: Index some data first, or check the index name for typos:

# List all indices in your app
curl -s "https://${ALGOLIA_APP_ID}-dsn.algolia.net/1/indexes" \
  -H "X-Algolia-Application-Id: ${ALGOLIA_APP_ID}" \
  -H "X-Algolia-API-Key: ${ALGOLIA_ADMIN_KEY}" | jq '.items[].name'

4. Rate limit exceeded (429)

ApiError: Too Many Requests

Cause: API key's maxQueriesPerIPPerHour exceeded, or server-side indexing rate limit hit.

Fix:

// Algolia's built-in retry handles transient 429s.
// For sustained rate limits:

// 1. Reduce batch frequency
const BATCH_SIZE = 500;  // Down from 1000

// 2. Add delay between batches
for (const batch of chunks) {
  await client.saveObjects({ indexName: 'products', objects: batch });
  await new Promise(r => setTimeout(r, 200)); // 200ms pause between batches
}

// 3. Check/increase key rate limit
// Dashboard > Settings > API Keys > Edit key > Rate limit

5. Record is too big (400)

ApiError: Record at the position 0 is too big size=15234 bytes. Contact us if you need a higher quota.

Cause: Single record exceeds 10KB (free/Build plan) or 100KB (paid plans).

Fix:

// Strip unnecessary fields before indexing
function trimForAlgolia(record: any) {
  const { full_html, raw_content, internal_notes, ...searchable } = record;
  return searchable;
}

// Or split long text into chunks
function truncateDescription(record: any, maxChars = 5000) {
  return {
    ...record,
    description: record.description?.substring(0, maxChars),
  };
}

6. Attribute not valid for filtering (400)

ApiError: Attribute "price" is not in attributesForFaceting

Cause: Using filters or facetFilters on an attribute not configured for faceting.

Fix:

await client.setSettings({
  indexName: 'products',
  indexSettings: {
    attributesForFaceting: ['category', 'brand', 'filterOnly(price)', 'filterOnly(in_stock)'],
  },
});
// Wait for settings to propagate

7. RetryError: Unreachable hosts

RetryError: Unreachable hosts - yourass might not be connected to the internet

Cause: Network/DNS issue. Can't reach *.algolia.net or *.algolianet.com.

Fix:

# Test DNS resolution
nslookup ${ALGOLIA_APP_ID}-dsn.algolia.net

# Test HTTPS connectivity
curl -v "https://${ALGOLIA_APP_ID}-dsn.algolia.net/1/indexes" 2>&1 | grep "Connected to"

# Check firewall — Algolia needs outbound HTTPS (443) to:
# ${APP_ID}.algolia.net
# ${APP_ID}-1.algolianet.com
# ${APP_ID}-2.algolianet.com
# ${APP_ID}-3.algolianet.com

8. Invalid filter syntax (400)

ApiError: Invalid syntax for filter: 'price > AND < 100'

Fix: Algolia filter syntax reference:

# Correct syntax
price > 50 AND price < 100        # Numeric range
category:shoes                     # String equality
NOT category:sandals               # Negation
(brand:Nike OR brand:Adidas)       # Grouped OR
in_stock = true                    # Boolean (stored as 0/1)
_tags:featured                     # Tag filter

Quick Diagnostic Script

#!/bin/bash
echo "=== Algolia Diagnostics ==="
echo "App ID: ${ALGOLIA_APP_ID:-NOT SET}"
echo "Admin key: ${ALGOLIA_ADMIN_KEY:+SET (${#ALGOLIA_ADMIN_KEY} chars)}"
echo ""

echo "=== Connectivity ==="
curl -s -o /dev/null -w "HTTP %{http_code} in %{time_total}s" \
  "https://${ALGOLIA_APP_ID}-dsn.algolia.net/1/indexes" \
  -H "X-Algolia-Application-Id: ${ALGOLIA_APP_ID}" \
  -H "X-Algolia-API-Key: ${ALGOLIA_ADMIN_KEY}"
echo ""

echo "=== SDK Version ==="
npm list algoliasearch 2>/dev/null || echo "Not installed"

echo "=== Algolia Status ==="
curl -s https://status.algolia.com/api/v2/status.json | jq -r '.status.description' 2>/dev/null

Escalation Path

1. Check status.algolia.com first
2. Collect debug info with algolia-debug-bundle skill
3. Search Algolia Support articles
4. Open support ticket with request ID from error response

Resources

• Algolia Status Page
• API Key Restrictions
• Troubleshooting FAQ

Next Steps

For comprehensive debugging, see algolia-debug-bundle.