---
title: "Provider-signed priced-capability listing (UPSERT)"
method: POST
path: "/v1/pay/capability/list"
tags: ["Voidly Pay"]
---

# Provider-signed priced-capability listing (UPSERT)

`POST /v1/pay/capability/list`

Sign a voidly-capability-list/v1 envelope with your Ed25519 secret. UPSERT on (provider_did, capability slug) — same capability updates, new capability inserts. See voidly-pay-marketplace-invariants.md.

## Request body

- object
  - `envelope` object, required
  - `signature` string, required

## Response `200`

Listed or updated

## Other responses

- `400` — invalid_signature / invalid_description / price_out_of_range / etc
- `404` — provider_pubkey_not_found
- `409` — nonce_seen

---

[API](https://skmtc.net/voidly/apis/voidly-api.md) · [All operations](https://skmtc.net/voidly/apis/voidly-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/voidly/voidly-api/revisions/decbe6fd40a8/schema)