Verified MCP tools, by capability
Every other registry indexes servers: a name, a URL and whatever
prose the publisher wrote. The tool names and input schemas an agent actually has to match
on exist in no index. So we ask each server directly, and store what it answers.
- 281,538verified tools
- 14,553servers introspected
- 9,783endpoints requiring credentials
- 26capabilities
Maps, location and weather
11,486 tools · 4,654 servers
Analytics and monitoring
10,848 tools · 4,960 servers
Calendar and scheduling
9,453 tools · 2,301 servers
Legal and government data
9,104 tools · 1,438 servers
Science and research
8,552 tools · 4,044 servers
Files and storage
8,477 tools · 4,978 servers
Crypto and blockchain
7,081 tools · 2,107 servers
GitHub and version control
6,323 tools · 3,888 servers
Payments and billing
6,228 tools · 3,378 servers
Web scraping and browser automation
5,560 tools · 2,593 servers
AI models and embeddings
4,156 tools · 1,535 servers
Images, audio and video
2,742 tools · 585 servers
Project management
2,548 tools · 2,342 servers
HR and recruiting
2,043 tools · 577 servers
E-commerce
1,917 tools · 552 servers
PDF and document extraction
1,887 tools · 584 servers
Cloud and DevOps
1,574 tools · 280 servers
Finance and market data
1,515 tools · 556 servers
Email
1,256 tools · 455 servers
Social media
1,232 tools · 173 servers
Databases and SQL
1,003 tools · 222 servers
CRM and sales
651 tools · 282 servers
Security and compliance
585 tools · 231 servers
Web search
467 tools · 172 servers
Messaging and chat
462 tools · 149 servers
Translation and language
196 tools · 85 servers
What is in the index
Measured, not claimed. This is the whole index by
kind, 133,330 resources in total.
| MCP servers | | 124,141 |
| Agent skills | | 4,580 |
| OpenAPI services | | 2,899 |
| Other callable resources | | 774 |
| Machine-readable docs | | 576 |
| A2A agents | | 173 |
| Plugin manifests | | 109 |
| Catalogues | | 50 |
| ARD registries | | 16 |
| Packages | | 7 |
| GraphQL APIs | | 2 |
| Agent descriptors (ACP, OASF, AgentFacts) | | 1 |
| Datasets | | 1 |
| WebMCP browser tools | | 1 |
How the ecosystem spells the same thing
Media types as publishers actually wrote them.
Filters match exactly, so a registry that does not normalise these silently drops thousands
of entries. We normalise all of them, plus both URN prefixes in circulation
(urn:air: and urn:ai:), on ingest.
application/mcp-server-card+json | 120,562 |
application/ai-skill | 3,241 |
application/mcp-server | 2,890 |
application/vnd.oai.openapi+json | 2,625 |
application/ai-skill+md | 1,237 |
application/mcp-server+json | 682 |
application/json | 598 |
text/markdown | 218 |
application/openapi+json | 217 |
text/html | 154 |
application/a2a-agent-card+json | 152 |
text/plain | 90 |
This is not a directory of every server. We measured what ranks for MCP queries and the
primary source wins: mirroring it at scale adds nothing. These pages exist because the
verified tool surface is data that is not published anywhere else.
The whole corpus is also an open dataset under CC BY 4.0:
huggingface.co/datasets/AgenticResourceDiscovery/verified-mcp-tools.