# Federation: every agent registry, one neutral index · Agenstry

Total federated

216,239

agents + MCP servers indexed

A2A agents

9,069

across 45 sources

MCP servers

207,170

from 15 registries · by 31,047 publishers

Per-source counts below can overlap, as one agent often appears in
multiple sources (e.g. a2aregistry + GitHub code + crt.sh). The
headline above is the count of distinct domains.

## Per-source breakdown

Top 25 sources by indexed count. The long tail
(individual GitHub forks, single-repo MCP authors) is rolled into
the "other sources" row at the bottom of each table.

### A2A sources

|  |  |
| --- | --- |
| recrawl\_warm | 7,171 |
| recrawl\_hot | 5,898 |
| agentic\_market | 3,512 |
| cdp\_discovery | 3,248 |
| manifests | 1,787 |
| n8n\_workflows | 1,233 |
| x402\_list | 1,020 |
| mcp\_registry | 972 |
| smithery | 761 |
| registry | 683 |
| a2aregistry | 597 |
| github\_code | 563 |
| a2a\_registry\_org | 307 |
| dexter\_discovery | 181 |
| recrawl\_paid | 175 |
| lists | 129 |
| submitted | 95 |
| mpp | 94 |
| 8004scan | 88 |
| erc8004 | 62 |
| pay\_sh | 50 |
| github\_topics | 35 |
| a2a-validate | 34 |
| sitemap | 21 |
| ultravioleta\_discovery | 18 |
| 20 other sources | 107 |

### MCP sources

|  |  |
| --- | --- |
| glama | 87,237 |
| mcp.so | 18,562 |
| pypi | 10,203 |
| n8n | 8,291 |
| docker | 8,134 |
| npm | 8,106 |
| pulsemcp | 4,474 |
| sadri | 3,755 |
| x402 | 3,024 |
| io.github.sadri-dridi | 2,341 |
| direct | 2,238 |
| io.github.pipeworx-io | 1,593 |
| mcp-dir | 1,128 |
| io.github.mcp-dir | 1,113 |
| evozim-hv | 1,028 |
| io.github.mrfentmen | 780 |
| io.github.evozim | 375 |
| io.github.csoai-org | 354 |
| jsr | 349 |
| docker-mcp | 271 |
| jmshinhwa | 226 |
| ai.smithery | 214 |
| x402/scoutgate | 214 |
| composio | 207 |
| other | 167 |
| 31,037 other sources | 42,786 |

## Federation sources

Community + standards

### A2A community registries

- [a2aregistry.org](https://a2aregistry.org/), community A2A registry
- [agentrolodex.com](https://agentrolodex.com/), community A2A directory
- [AGNTCY](https://agntcy.ai/), Cisco-led federation

MCP registries

### Anthropic + community MCP

- [Anthropic MCP Registry](https://registry.modelcontextprotocol.io/), official
- [Smithery](https://smithery.ai/), 7K+ MCP servers
- [Glama](https://glama.ai/), 23K+ MCP servers
- [PulseMCP](https://www.pulsemcp.com/)
- [mcp.so](https://mcp.so/)

Cloud-vendor registries

### AWS · Google · Microsoft · Cloudflare

- [AWS Bedrock AgentCore](https://aws.amazon.com/bedrock/agentcore/), preview
- [Google Cloud Agent Registry](https://cloud.google.com/agent-builder), GA
- [Azure AI Foundry](https://ai.azure.com/), GA
- [Cloudflare Agent Name Service](https://www.cloudflare.com/), beta

Code + package ecosystems

### GitHub · npm · PyPI · Docker

- GitHub topics: `a2a-agent`, `a2a-protocol`, `mcp-server`
- GitHub code search: `well-known/agent-card.json`
- npm: `@modelcontextprotocol/*` + community MCP packages
- PyPI: `mcp-*` packages
- Docker Hub: `mcp/*` images

Curated awesome lists

### 7 community-maintained README crawls

- `pab1it0/awesome-a2a`
- `sing1ee/a2a-directory`
- `ai-boost/awesome-a2a`
- `punkpeye/awesome-mcp-servers`
- `wong2/awesome-mcp-servers`
- `appcypher/awesome-mcp-servers`
- `modelcontextprotocol/servers`

Long-tail discovery

### Certificate Transparency + manifests

- [Certspotter CT logs](https://sslmate.com/certspotter/), domains issuing TLS certs with agent-related names
- [crt.sh](https://crt.sh/), keyword-matched certificates
- Manifest expansion, well-known paths on every discovered domain

Business-identity registries

### 8 authoritative registries

- GLEIF (global LEI)
- UK Companies House
- Netherlands KvK
- Australia ABN Lookup
- Germany Handelsregister
- EU BRIS network
- Canada Federal Corporations
- USA OpenCorporates

Used for the verified-business badge. See </api/registries>.

## Why neutral federation matters

Different registries cover different hosts. Agenstry combines public records
and applies the same published checks across them. Hosted agents are labelled
and receive no ranking advantage; placement and scores cannot be bought.

## Live coverage funnel

For a real-time per-source breakdown of how many candidate URLs each
federation source surfaces, how many become valid agent cards, and how
many respond to live JSON-RPC, see [the compliance funnel](/compliance).

### Are we missing your registry?

Agenstry ships open-source adapters under `app/crawler/` and
`app/registries/`. New registries plug in with a single file
implementing the `RegistryAdapter` interface.
To add one, email [hello@agenstry.com](mailto:hello@agenstry.com)
with the registry's API and we will write the adapter.