---
title: "Fetch the registry coverage and completeness summary"
method: GET
path: "/api/v1/coverage"
tags: ["registry"]
---

# Fetch the registry coverage and completeness summary

`GET /api/v1/coverage`

## Request

- Base URL: `https://api.metagraph.sh`
- URL: `https://api.metagraph.sh/api/v1/coverage`
- Auth: none required

Fetch registry coverage summary.

## Response `200`

Canonical artifact wrapped in the Metagraphed API envelope.

- object
  - `data` object, required
    - `application_subnet_count` integer, required
    - `candidate_count` integer, required
    - `candidate_subnet_count` integer, required
    - `chain_subnet_count` integer, required
    - `completeness` CoverageCompleteness
      - `average_score` integer
      - `dimension_coverage` object
      - `fully_complete_count` integer
      - `fully_complete_pct` integer
      - `median_score` integer
      - `methodology` string
      - `score_distribution` object
      - `scored_subnet_count` integer
    - `contract_version` string
    - `curated_overlay_count` integer, required
    - `curation_level_counts` CountMap, required
    - `domain_coverage` CountMap
    - `first_party_subnet_count` integer
    - `generated_at` string, required
    - `manifested_count` integer, required
    - `native_only_count` integer, required
    - `native_only_with_candidates` integer, required
    - `native_only_without_candidates` integer, required
    - `native_snapshot_captured_at` string, required
    - `network` 'finney' | 'test' | 'local', required
    - `notes` union: Public-safe notes; may be a string or a string list depending on the adapter.
      - string
      - string[]
    - `official_surface_count` integer
    - `probed_count` integer, required
    - `probed_surface_count` integer, required
    - `registry_observed_surface_count` integer
    - `root_subnet_count` integer, required
    - `schema_version` 1, required
    - `source` object, required
      - `candidates` string, required
      - `native` union, required
        - string
        - object
          - `identity_storage` string
          - `kind` string
          - `method` string
          - `package` string
          - `rpc_family` string
          - `version` string
      - `overlays` string, required
    - `subnets_without_official_surface` integer
    - `surface_count` integer, required
  - `meta` ResponseMeta, required
    - `artifact_path` string
    - `cache` 'short' | 'standard' | 'static'
    - `catalog_paging` object
      - `reason` 'catalog_changed' | 'catalog_budget_exceeded' | 'catalog_unavailable', required
    - `contract_version` string, required
    - `generated_at` string, nullable: Deterministic build content marker (epoch by default); not a wall clock. Use published_at for human-facing freshness.
    - `observed_through` string, date-time, nullable: How far the tier that answered this request has observed at all. A payload reporting no activity at or before this time is a measured absence; one whose subject is newer is outside coverage, not empty. Null when the horizon is unreadable.
    - `pagination` PaginationMeta
      - `collection` string, required
      - `cursor` integer, required
      - `limit` integer, required
      - `next_cursor` integer, nullable, required
      - `order` 'asc' | 'desc'
      - `returned` integer, required
      - `snapshot` string: Present only for page_snapshot paging. Echo as page_snapshot on subsequent pages; a changed collection or query requires a restart.
      - `sort` string, nullable
      - `total` integer, required
    - `published_at` string, date-time, nullable: Real publish time from the KV latest pointer, distinct from generated_at. Null before the first publish or when the control KV is unbound.
    - `source` string
    - `stale_contract` object: Present ONLY when the served artifact was built under an older contract than the live one (serve-time drift, #1001) — the body may predate a schema change. Mirrored on the x-metagraph-stale-contract response header for monitoring.
      - `built_under` string, required: Contract version the served artifact was built under.
      - `live` string, required: Current (live) contract version the Worker is running.
  - `ok` true, required
  - `schema_version` 1, required

## Other responses

- `304`: ETag matched and the cached response is still valid.
- `400`: Query parameters were malformed or unsupported.
- `404`: Artifact or API route was not found.
- `405`: HTTP method is not supported.
- `500`: Unexpected backend error.

---

[API](https://skmtc.dev/metagraph/apis/metagraphed-api.md) · [All operations](https://skmtc.dev/metagraph/apis/metagraphed-api/llms.txt) · [OpenAPI document](https://skmtc.dev/metagraph/apis/metagraphed-api/revisions/e29036024bb1?raw)