# HNSW Graph Connectivity Repair

> HNSW Graph Connectivity Repair is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.3/call, status unknown (last checked 2026-10-20).

Detects and repairs connectivity issues in HNSW (Hierarchical Navigable Small World) approximate nearest neighbor graphs.

## Facts

- Endpoint: POST https://api.m2mcent.com/hnsw-graph-connectivity-repair-mcp/api/process?utm_source=zero.xyz
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hnsw-graph-connectivity-repair-1b60a96b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XI2VvEGSxoHLqG45lWFGm

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability hnsw-graph-connectivity-repair-1b60a96b -d '<json body>'
```

Example prompt: My HNSW graph index has connectivity issues — some nodes seem disconnected and my nearest-neighbor searches are returning bad results. Can you analyze and repair the graph connectivity?

## When to prefer this

Choose this endpoint when you have an HNSW approximate nearest neighbor graph with broken connectivity, isolated nodes, or degraded search recall due to structural damage. Particularly useful after bulk deletions, partial writes, or index corruption in vector similarity search systems.

## Known failure modes

- Malformed or unparseable graph data in the 'data' field returns a validation error
- Graph data too large may result in timeout or processing error
- Heavily corrupted graphs with insufficient structural information may not be fully repairable
- Empty or null input data returns a bad request error

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns a repaired graph structure with reconnected nodes, along with a report indicating which connectivity issues were detected and fixed, and the overall repair status.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hnsw-graph-connectivity-repair-1b60a96b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)