---
title: "Changes to Remote MCP endpoint (JSON-RPC)"
method: POST
path: "/api/v1/mcp"
---

# Changes to Remote MCP endpoint (JSON-RPC)

`POST /api/v1/mcp`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 6 of 31 revisions.

- **2026-08-29** `7c0c7cdd41ee` — 5 warning
- **2026-08-29** `8582a359fa07` — 4 warning, 10 info
- **2026-07-30** `19193b177154` — 8 warning, 44 info
- **2026-07-14** `22ab6cfbf300` — 20 info
- **2026-06-01** `422bd4dc1611` — 36 warning, 1 info
- **2026-05-07** `2907497f4ca3` — 1 info

## Changes

- **2026-08-29** `7c0c7cdd41ee` — 5 warning
  - added the new `database_unavailable` enum value to the `error/reason` response property for the response status `401`
  - added the new `database_unavailable` enum value to the `error/reason` response property for the response status `402`
  - added the new `database_unavailable` enum value to the `error/reason` response property for the response status `403`
  - added the new `database_unavailable` enum value to the `error/reason` response property for the response status `429`
  - added the new `database_unavailable` enum value to the `error/reason` response property for the response status `500`
- **2026-08-29** `8582a359fa07` — 4 warning, 10 info
  - the optional response header `X-RateLimit-Limit` removed for the status `202`
  - the optional response header `X-RateLimit-Remaining` removed for the status `202`
  - the optional response header `X-RateLimit-Reset` removed for the status `202`
  - the optional response header `X-Request-Id` removed for the status `202`
  - added the media type `application/json` for the response with the status `400`
  - added the media type `application/json` for the response with the status `403`
  - added the optional property `meta/ranking_as_of` to the response with the `401` status
  - added the optional property `meta/ranking_as_of` to the response with the `402` status
  - added the optional property `meta/ranking_as_of` to the response with the `429` status
  - added the optional property `meta/ranking_as_of` to the response with the `500` status
  - added the optional property `meta/ranking_generation` to the response with the `401` status
  - added the optional property `meta/ranking_generation` to the response with the `402` status
  - added the optional property `meta/ranking_generation` to the response with the `429` status
  - added the optional property `meta/ranking_generation` to the response with the `500` status
- **2026-07-30** `19193b177154` — 8 warning, 44 info
  - added the new `idempotency_in_progress` enum value to the `error/reason` response property for the response status `401`
  - added the new `idempotency_in_progress` enum value to the `error/reason` response property for the response status `402`
  - added the new `idempotency_in_progress` enum value to the `error/reason` response property for the response status `429`
  - added the new `idempotency_in_progress` enum value to the `error/reason` response property for the response status `500`
  - added the new `webhook_delivery_in_progress` enum value to the `error/reason` response property for the response status `401`
  - added the new `webhook_delivery_in_progress` enum value to the `error/reason` response property for the response status `402`
  - added the new `webhook_delivery_in_progress` enum value to the `error/reason` response property for the response status `429`
  - added the new `webhook_delivery_in_progress` enum value to the `error/reason` response property for the response status `500`
  - added the optional property `meta/category_skill_base_payload_hash` to the response with the `401` status
  - added the optional property `meta/category_skill_base_payload_hash` to the response with the `402` status
  - added the optional property `meta/category_skill_base_payload_hash` to the response with the `429` status
  - added the optional property `meta/category_skill_base_payload_hash` to the response with the `500` status
  - added the optional property `meta/category_skill_enriched_base_payload_hash` to the response with the `401` status
  - added the optional property `meta/category_skill_enriched_base_payload_hash` to the response with the `402` status
  - added the optional property `meta/category_skill_enriched_base_payload_hash` to the response with the `429` status
  - added the optional property `meta/category_skill_enriched_base_payload_hash` to the response with the `500` status
  - added the optional property `meta/category_skill_model_operationally_degraded` to the response with the `401` status
  - added the optional property `meta/category_skill_model_operationally_degraded` to the response with the `402` status
  - added the optional property `meta/category_skill_model_operationally_degraded` to the response with the `429` status
  - added the optional property `meta/category_skill_model_operationally_degraded` to the response with the `500` status
  - added the optional property `meta/category_skill_model_version` to the response with the `401` status
  - added the optional property `meta/category_skill_model_version` to the response with the `402` status
  - added the optional property `meta/category_skill_model_version` to the response with the `429` status
  - added the optional property `meta/category_skill_model_version` to the response with the `500` status
  - added the optional property `meta/category_skill_observation_started_at` to the response with the `401` status
  - added the optional property `meta/category_skill_observation_started_at` to the response with the `402` status
  - added the optional property `meta/category_skill_observation_started_at` to the response with the `429` status
  - added the optional property `meta/category_skill_observation_started_at` to the response with the `500` status
  - added the optional property `meta/category_skill_platform` to the response with the `401` status
  - added the optional property `meta/category_skill_platform` to the response with the `402` status
  - added the optional property `meta/category_skill_platform` to the response with the `429` status
  - added the optional property `meta/category_skill_platform` to the response with the `500` status
  - added the optional property `meta/category_skill_scope` to the response with the `401` status
  - added the optional property `meta/category_skill_scope` to the response with the `402` status
  - added the optional property `meta/category_skill_scope` to the response with the `429` status
  - added the optional property `meta/category_skill_scope` to the response with the `500` status
  - added the optional property `meta/category_skill_source` to the response with the `401` status
  - added the optional property `meta/category_skill_source` to the response with the `402` status
  - added the optional property `meta/category_skill_source` to the response with the `429` status
  - added the optional property `meta/category_skill_source` to the response with the `500` status
  - …12 more
- **2026-07-14** `22ab6cfbf300` — 20 info
  - added the optional property `error/reason` to the response with the `401` status
  - added the optional property `error/reason` to the response with the `402` status
  - added the optional property `error/reason` to the response with the `429` status
  - added the optional property `error/reason` to the response with the `500` status
  - added the optional property `error/retry_at` to the response with the `401` status
  - added the optional property `error/retry_at` to the response with the `402` status
  - added the optional property `error/retry_at` to the response with the `429` status
  - added the optional property `error/retry_at` to the response with the `500` status
  - added the optional property `meta/directional_source` to the response with the `401` status
  - added the optional property `meta/directional_source` to the response with the `402` status
  - added the optional property `meta/directional_source` to the response with the `429` status
  - added the optional property `meta/directional_source` to the response with the `500` status
  - added the optional property `meta/ranking_source` to the response with the `401` status
  - added the optional property `meta/ranking_source` to the response with the `402` status
  - added the optional property `meta/ranking_source` to the response with the `429` status
  - added the optional property `meta/ranking_source` to the response with the `500` status
  - added the required property `meta/cost` to the response with the `401` status
  - added the required property `meta/cost` to the response with the `402` status
  - added the required property `meta/cost` to the response with the `429` status
  - added the required property `meta/cost` to the response with the `500` status
- **2026-06-01** `422bd4dc1611` — 36 warning, 1 info
  - added the new `account_locked` enum value to the `error/code` response property for the response status `401`
  - added the new `account_locked` enum value to the `error/code` response property for the response status `402`
  - added the new `account_locked` enum value to the `error/code` response property for the response status `429`
  - added the new `account_locked` enum value to the `error/code` response property for the response status `500`
  - added the new `bad_request` enum value to the `error/code` response property for the response status `401`
  - added the new `bad_request` enum value to the `error/code` response property for the response status `402`
  - added the new `bad_request` enum value to the `error/code` response property for the response status `429`
  - added the new `bad_request` enum value to the `error/code` response property for the response status `500`
  - added the new `forbidden` enum value to the `error/code` response property for the response status `401`
  - added the new `forbidden` enum value to the `error/code` response property for the response status `402`
  - added the new `forbidden` enum value to the `error/code` response property for the response status `429`
  - added the new `forbidden` enum value to the `error/code` response property for the response status `500`
  - added the new `internal_error` enum value to the `error/code` response property for the response status `401`
  - added the new `internal_error` enum value to the `error/code` response property for the response status `402`
  - added the new `internal_error` enum value to the `error/code` response property for the response status `429`
  - added the new `internal_error` enum value to the `error/code` response property for the response status `500`
  - added the new `invalid_api_key` enum value to the `error/code` response property for the response status `401`
  - added the new `invalid_api_key` enum value to the `error/code` response property for the response status `402`
  - added the new `invalid_api_key` enum value to the `error/code` response property for the response status `429`
  - added the new `invalid_api_key` enum value to the `error/code` response property for the response status `500`
  - added the new `not_found` enum value to the `error/code` response property for the response status `401`
  - added the new `not_found` enum value to the `error/code` response property for the response status `402`
  - added the new `not_found` enum value to the `error/code` response property for the response status `429`
  - added the new `not_found` enum value to the `error/code` response property for the response status `500`
  - added the new `rate_limit_unavailable` enum value to the `error/code` response property for the response status `401`
  - added the new `rate_limit_unavailable` enum value to the `error/code` response property for the response status `402`
  - added the new `rate_limit_unavailable` enum value to the `error/code` response property for the response status `429`
  - added the new `rate_limit_unavailable` enum value to the `error/code` response property for the response status `500`
  - added the new `rate_limited` enum value to the `error/code` response property for the response status `401`
  - added the new `rate_limited` enum value to the `error/code` response property for the response status `402`
  - added the new `rate_limited` enum value to the `error/code` response property for the response status `429`
  - added the new `rate_limited` enum value to the `error/code` response property for the response status `500`
  - added the new `subscription_required` enum value to the `error/code` response property for the response status `401`
  - added the new `subscription_required` enum value to the `error/code` response property for the response status `402`
  - added the new `subscription_required` enum value to the `error/code` response property for the response status `429`
  - added the new `subscription_required` enum value to the `error/code` response property for the response status `500`
  - api operation id `mcp_post` removed and replaced with `createMcpJsonRpcResponse`
- **2026-05-07** `2907497f4ca3` — 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/0xinsider/apis/0xinsider-api/docs/api/v1/mcp/post.md) · [API](https://skmtc.dev/0xinsider/apis/0xinsider-api.md) · [Page](https://skmtc.dev/0xinsider/apis/0xinsider-api/changes/api/v1/mcp/post)