Agentifact assessment — independently scored, not sponsored. Last verified Mar 6, 2026.
Perspective API
Google API using machine learning to score the perceived toxicity, threat level, and conversational quality of text comments. Helps agent builders filter user inputs and outputs for harmful language. Free with a default quota of 1 QPS. Note: the service is scheduled to sunset at end of 2026; actively used projects should plan migration.
Viable option — review the tradeoffs
You need to filter user inputs and agent outputs for toxic language to prevent harmful conversations in your autonomous agents.
Excellent on overt toxicity; struggles with sarcasm, coded bias, and profanity (false negatives common); 1 QPS free quota.
You want to prioritize constructive comments or flag threats in agent-driven forums or chat systems.
Reliable for clear threats and insults; weaker on subtle bigotry; low latency but rate-limited to 1 QPS by default.
Sunsetting End of 2026
Service will shut down after 2026; actively used projects must migrate to alternatives like OpenAI Moderation.
1 QPS Rate Limit
Free tier caps at 1 query per second; exceed it and requests fail—implement queuing or sleep delays in code.
Trust Breakdown
What It Actually Does
Analyzes text comments to predict how likely they are to be perceived as toxic, threatening, or insulting, returning a confidence score that helps platforms automatically filter harmful content or flag comments for human review.[1][2]
Google API using machine learning to score the perceived toxicity, threat level, and conversational quality of text comments. Helps agent builders filter user inputs and outputs for harmful language. Free with a default quota of 1 QPS.
Note: the service is scheduled to sunset at end of 2026; actively used projects should plan migration.
Fit Assessment
Best for
- ✓content-moderation
- ✓toxicity-detection
Not ideal for
- ✗quota limit of 1 QPS average
- ✗service shutdown after 2026
Known Failure Modes
- quota limit of 1 QPS average
- service shutdown after 2026
Score Breakdown
Protocol Support
Capabilities
Governance
- permission-scoping
- rate-limiting