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MCP ecosystem insights · ToolBench

Insights

What 92,923 scored MCP servers reveal about agent-ready tools.

Scored serversbrowse →

92,923

641,511 tools across 2,855 integrations

No recovery guidance

70.2%

64,106 servers leave agents guessing when a call fails

Destructive tools

29,341

83% on servers without safety annotations

Credentials in parameters→

5,702

servers ask the agent to pass a secret as a tool argument

Grade distribution

A+570.1%A2680.3%B2,9493%C15,26016%D23,94826%F50,44154%

Top integrations

PostgreSQL1,814 SQLite1,534 GitHub1,365 OpenAI1,219 Redis791 Git661 Ollama625 MySQL566 Playwright467 ChromaDB408 MongoDB373 Docker370

Servers by industry

Software Development8,308 DevOps & Infrastructure3,467 Finance3,325 Content & Media2,894 Data Engineering2,123 E-commerce1,752 Security1,718 Communication1,607 Marketing1,473 Education1,080

Tools per server average score

1 tool41 · 9,826

2 to 347 · 14,560

4 to 751 · 21,182

8 to 1552 · 18,473

16 to 3152 · 9,900

32 or more47 · 1,702

Quality peaks at 16 to 31 tools. Past that, definitions get harder to keep coherent.

What lifts a score points vs servers without it

Tool annotations+10.7

Open-source license+8.2

Stateless requests+8.1

Documentation site+7.3

More than 10 GitHub stars

Supabase

348

Google Generative AI273

Sentence Transformers229

Hugging Face226

arXiv224

Most common issues share of V2 servers

No recovery guidance on errors70%

Weak tool descriptions66%

Unconstrained inputs53%

Tool design problems52%

Unshaped responses34%

No pagination28%

No confirmation before risky actions17%

Missing safety annotations17%

Unclear tool chaining7%

Credentials in tool parameters6%

Healthcare804

Tools by risk 655,770 tools

Read-only432,852

Write187,075

Reversible6,502

Destructive24,528

Irreversible4,813

Only 17% of destructive and irreversible tools sit on servers that declare safety annotations.

+2.2

Interface design matters more than popularity. Tool annotations are used by only 8% of servers.