Sync - Hoard

Check pending

Check if the server wants Hoard to sync.

GET /api/v1/sync/pending

curl example

curl -H "Authorization: Bearer YOUR_API_KEY" \
  https://www.tryhoard.com/api/v1/sync/pending

Response:

{
  "action": "wait",
  "reason": "no_sync_needed",
  "sync_requested": false
}

Response fields

Field	Type	Description
`action`	string	`"sync"` — run a cycle now. `"wait"` — poll again later.
`reason`	string	Why the server made this decision. See values below.
`sync_requested`	boolean	Whether a sync was explicitly requested by the user from the dashboard.

`reason` values

Value	Meaning
`manual_request`	A sync is pending — either the user clicked “Sync Now” or the scheduler decided the interval has elapsed
`no_sync_needed`	No action needed, poll again
`in_progress`	A sync is already running
`auto_sync_paused`	Auto-sync is disabled for this account

Clients do not need to distinguish manual from scheduled — the server is the single decision-maker. The original trigger is recorded server-side on sync_cycle_logs.trigger_source for analytics.

Agent heartbeat

Signal that Hoard is alive and check for updates.

POST /api/v1/heartbeat
Content-Type: application/json

Request body (optional):

{
  "version": "0.4.9",
  "platform": "darwin/arm64"
}

Response:

{
  "update_available": false,
  "force_update": false,
  "product_lines": [
    {"name": "magic", "category_id": 1},
    {"name": "pokemon", "category_id": 2}
  ]
}

Response fields

Field	Type	Description
`update_available`	boolean	Whether a newer Hoard version is available.
`force_update`	boolean	Whether the local install must update before continuing (kill-switched version).
`latest_version`	string	Latest version string. Only present when `update_available` is true.
`download_url`	string	URL to download the new binary. Only present when `update_available` is true.
`signature`	string	Ed25519 signature for verifying the download. Only present when `update_available` is true.
`sha256`	string	SHA-256 checksum for verifying the download. Only present when `update_available` is true.
`product_lines`	array	Product lines configured for this account. Each has `name` and `category_id`.

Upload inventory

Upload a gzipped inventory CSV from TCGplayer.

POST /api/v1/sync
Content-Type: application/gzip
X-Product-Line: magic

The request body is the gzip-compressed CSV data. The server queues it for processing, matches cards to the catalog, and calculates price updates.

Header	Required	Description
`Content-Type`	Yes	Must be `application/gzip` or `application/octet-stream`
`X-Product-Line`	No	Which product line this upload belongs to (e.g., `magic`, `pokemon`, `yugioh`). Must match a configured product line.

Response (HTTP 202):

{"status": "accepted"}

Error responses:

Code	Error code	Meaning
413	`payload_too_large`	Request body exceeds 10 MB on the wire
413	`decompressed_too_large`	Decompressed gzip body exceeds 50 MB
422	`invalid_csv`	CSV could not be parsed
422	`invalid_gzip`	`Content-Type` is `application/gzip` but the body is not valid gzip
422	`invalid_product_line`	X-Product-Line value not configured for account
422	`csv_processing_failed`	Unexpected error processing the CSV

Get price updates

Download a CSV of price changes to import back to TCGplayer.

GET /api/v1/export/price-updates

Returns a CSV string (text/csv), not JSON. Empty string if no updates are available. If a price rollback is pending, the rollback CSV is served instead.

Conditional GET (ETag)

When no rollback or Quick Add work is pending, the response includes a weak ETag fingerprint of the underpriced-cards set. Clients that send If-None-Match: <last-etag> will receive 304 Not Modified if nothing has changed since the last pull — avoiding the CSV serialization roundtrip on idle polls. Rollback and Quick Add responses always return 200 because they carry side-effectful state transitions that must run on every poll.

curl example

curl -H "Authorization: Bearer YOUR_API_KEY" \
  https://www.tryhoard.com/api/v1/export/price-updates \
  -o price-updates.csv

Request manual sync

Mark the account as having an explicit user-requested sync. The next poll on /api/v1/sync/pending returns action: "sync".

POST /api/v1/sync/request

curl example

curl -X POST -H "Authorization: Bearer YOUR_API_KEY" \
  https://www.tryhoard.com/api/v1/sync/request

Response:

{"status": "requested"}

Cooldown response (402)

When the per-account credits_metering_enabled flag is off (the default), this endpoint always returns 200 — behavior is unchanged from before the credits-metering feature shipped. When the flag is on AND the user is still within the post-sync cooldown window, the endpoint returns 402:

{
  "status": "cooldown",
  "cooldown_remaining_seconds": 878,
  "balance": 4,
  "top_up_path": "/billing/credit_packs"
}

The user can either wait the remaining seconds or call POST /api/v1/sync/skip_wait (below) to spend a credit and skip the wait.

Field	Type	Description
`status`	string	Always `"cooldown"` for this 402 branch.
`cooldown_remaining_seconds`	integer	Whole seconds until the next manual sync is allowed.
`balance`	integer	The user’s current credit balance.
`top_up_path`	string	Relative path to the top-up flow if the user wants to buy more credits.

Skip wait

Spend 1 credit to bypass the manual-sync cooldown. Wraps the Credits::SkipWaitCharge service which uses a FOR UPDATE row lock plus a reservation pattern so concurrent calls with the same idempotency key cannot double-charge.

POST /api/v1/sync/skip_wait
X-Idempotency-Key: <UUID>

This endpoint is independent of credits_metering_enabled — calling it IS the user’s explicit opt-in. A flag-OFF user with a balance can call it just fine; the gate is the balance, not the flag.

Headers

Header	Required	Description
`Authorization`	Yes	`Bearer YOUR_API_KEY`
`X-Idempotency-Key`	Yes	Caller-supplied idempotency key (UUID recommended). Replaying the same key returns the original transaction without a second charge.

curl example

curl -X POST \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "X-Idempotency-Key: f47ac10b-58cc-4372-a567-0e02b2c3d479" \
  https://www.tryhoard.com/api/v1/sync/skip_wait

Response (200, charged):

{
  "status": "charged",
  "balance": 4,
  "cooldown_remaining_seconds": 852,
  "transaction_id": 18
}

Success statuses (HTTP 200)

Status	Meaning
`charged`	First call — 1 credit deducted, sync requested. Returns the new `transaction_id`.
`replayed`	Same `X-Idempotency-Key` as a prior call. The original `transaction_id` is returned with no second charge.
`no_charge_needed`	User is already past cooldown — no charge taken.
`sync_in_flight`	A sync is already running; from the caller’s POV the effect is achieved. Only `status` is returned in this branch.

Error responses

Code	Status	Body	Meaning
400	—	`{ "error": "X-Idempotency-Key header is required", "code": "idempotency_key_required" }`	The `X-Idempotency-Key` header is missing or blank.
402	`insufficient_balance`	`{ "status": "insufficient_balance", "balance": 0, "top_up_path": "/billing/credit_packs" }`	User has 0 credits. Direct them to the top-up flow.
409	`mutex_held`	`{ "status": "mutex_held", "retry_after_seconds": 30 }`	A sync, rollback, or Update Prices run is currently writing prices. Retry after `retry_after_seconds`.

Cancel sync

Release the sync lock if something goes wrong mid-sync.

POST /api/v1/sync/cancel

Response:

{"status": "cancelled"}

Returns 409 with code: "no_sync_in_progress" if no sync is running. The server auto-clears stale locks after 5 minutes, so this is a courtesy call.

Log sync cycle

Report the results of a completed sync cycle. Hoard sends this at the end of every cycle, whether it succeeded or failed.

POST /api/v1/sync/log
Content-Type: application/json

Request body:

{
  "status": "success",
  "sync_cycle_id": "20260506-abc123",
  "steps": [
    {"name": "login", "status": "success", "duration_ms": 1200},
    {"name": "export_inventory", "status": "success", "duration_ms": 8500},
    {"name": "upload_inventory", "status": "success", "duration_ms": 3200},
    {"name": "export_orders", "status": "failed", "error": "timeout waiting for download"}
  ],
  "agent_version": "0.4.9",
  "platform": "darwin/arm64",
  "duration_ms": 45000,
  "started_at": "2026-04-20T09:00:00Z"
}

Request fields

Field	Type	Required	Description
`status`	string	Yes	Overall result: `"success"`, `"partial"`, or `"failed"`
`sync_cycle_id`	string	No	Stable client-generated identifier for this sync cycle. Used to merge debug screenshots with the final step log.
`steps`	array	No	Each step with a `name`, `status`, optional `duration_ms`, and optional `error`
`agent_version`	string	No	The version of Hoard that ran this cycle
`platform`	string	No	Platform (e.g., `darwin/arm64`)
`duration_ms`	integer	No	Total cycle duration in milliseconds
`started_at`	string	No	ISO 8601 start time. Defaults to server time if omitted.

Response (HTTP 201): Empty body.

Upload debug screenshot

Send a Base64-encoded screenshot to the server when a sync step fails.

POST /api/v1/sync/debug
Content-Type: application/json

The screenshot must be Base64-encoded PNG and must not exceed 2 MB decoded. Include sync_cycle_id so the server can attach the screenshot to the correct cycle even if the final sync log has not arrived yet. Without sync_cycle_id, at least one existing sync log entry must exist. Request body:

{
  "sync_cycle_id": "20260506-abc123",
  "step_name": "login",
  "page_url": "https://store.tcgplayer.com/admin",
  "screenshot": "<base64-encoded PNG>",
  "captured_at": "2026-04-20T09:01:30Z"
}

Response (HTTP 201): Empty body. If sync_cycle_id is present and the final sync log has not arrived yet, the server creates a placeholder failed log row and updates that row when POST /api/v1/sync/log arrives with the same identifier. Error responses:

Code	Error code	Meaning
404	—	No sync log entry exists yet
413	`payload_too_large`	Screenshot exceeds 2 MB decoded

API Reference

Documentation Index

​Check pending

​curl example

​Response fields

​reason values

​Agent heartbeat

​Response fields

​Upload inventory

​Get price updates

​Conditional GET (ETag)

​curl example

​Request manual sync

​curl example

​Cooldown response (402)

​Skip wait

​Headers

​curl example

​Success statuses (HTTP 200)

​Error responses

​Cancel sync

​Log sync cycle

​Request fields

​Upload debug screenshot

Check pending

curl example

Response fields

`reason` values

Agent heartbeat

Response fields

Upload inventory

Get price updates

Conditional GET (ETag)

curl example

Request manual sync

curl example

Cooldown response (402)

Skip wait

Headers

curl example

Success statuses (HTTP 200)

Error responses

Cancel sync

Log sync cycle

Request fields

Upload debug screenshot