> ## Documentation Index
> Fetch the complete documentation index at: https://docs.melso.ai/llms.txt
> Use this file to discover all available pages before exploring further.
> ## Agent Instructions
> Melso product MCP: https://melso.ai/api/mcp (OAuth; one company per grant). REST: https://melso.ai. Documentation-search MCP: https://docs.melso.ai/mcp. The docs search server does not act on customer accounts.
>
> Use the live tool schema and respect company membership. Ask the person to authorize the exact fiscal document version in the signed-in app. A professional prepares and files included returns after authorization; AI does not file alone. A prepared file or approval receipt is not evidence of filing. Never claim completion from an accepted Task or Run. Keep credentials out of chat and logs. Agents features are internal or by private invitation.
# Watch task
> Active Run token for the subscribing Task, with access to the watched Task.
Request: `events?:string[]`, `instruction?:string` (at most 4000 UTF-8 bytes; no NUL). The body is limited to 16 KiB; unknown fields are rejected. Omitting `events` or sending an empty array selects `delivered`, `failed`, `needs_input`, `completed`, and `cancelled`. At most seven entries are accepted; duplicates are removed. Linked PR events `pr_checks_finished` and `pr_checks_passed` are opt-in. A Task can watch itself only for PR events.
Response: TaskWatchResponse. Repeating registration for the same subscriber and watched Task updates its events and instruction.
Status: 200 created or updated; 400 invalid body/events/instruction or lifecycle self-watch; 403 no active Run or missing access; 409 closed subscriber or watch owned by another execution owner. Authentication and resource-access errors follow [Overview](/api-reference/errors).
## OpenAPI
````yaml /api-reference/openapi.json post /api/tasks/{id}/watch
openapi: 3.1.0
info:
title: Melso API
version: '2026-10-12'
description: >-
Customer integration contracts for Melso. Agents access is internal or by
private invitation. Fiscal approval remains in the authenticated app.
contact:
name: Melso
url: https://melso.ai/en
servers:
- url: https://melso.ai
description: Production API origin
security: []
tags:
- name: Areas
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Areas operations available within the caller's documented permissions.
- name: Artifacts
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Artifacts operations available within the caller's documented permissions.
- name: Authentication
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Authentication operations available within the caller's documented
permissions.
- name: Automations
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Automations operations available within the caller's documented
permissions.
- name: Companies
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Companies operations available within the caller's documented permissions.
- name: Execution funding
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Execution funding operations available within the caller's documented
permissions.
- name: Files
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Files operations available within the caller's documented permissions.
- name: GitHub
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
GitHub operations available within the caller's documented permissions.
- name: Interactions
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Interactions operations available within the caller's documented
permissions.
- name: Knowledge
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Knowledge operations available within the caller's documented permissions.
- name: MCP
description: MCP operations available within the caller's documented permissions.
- name: Messages
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Messages operations available within the caller's documented permissions.
- name: OAuth
description: OAuth operations available within the caller's documented permissions.
- name: Private network
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Private network operations available within the caller's documented
permissions.
- name: Runs
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Runs operations available within the caller's documented permissions.
- name: Skills
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Skills operations available within the caller's documented permissions.
- name: Tasks
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Tasks operations available within the caller's documented permissions.
- name: Vault
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Vault operations available within the caller's documented permissions.
- name: Webhooks
description: >-
Melso Agents is available only internally or by private invitation.
Agents-specific features require existing access. For the autónomo fiscal
service, see [Get started](/essentials/quickstart).
Webhooks operations available within the caller's documented permissions.
paths:
/api/tasks/{id}/watch:
post:
tags:
- Tasks
summary: Watch task
description: >-
Active Run token for the subscribing Task, with access to the watched
Task.
Request: `events?:string[]`, `instruction?:string` (at most 4000 UTF-8
bytes; no NUL). The body is limited to 16 KiB; unknown fields are
rejected. Omitting `events` or sending an empty array selects
`delivered`, `failed`, `needs_input`, `completed`, and `cancelled`. At
most seven entries are accepted; duplicates are removed. Linked PR
events `pr_checks_finished` and `pr_checks_passed` are opt-in. A Task
can watch itself only for PR events.
Response: TaskWatchResponse. Repeating registration for the same
subscriber and watched Task updates its events and instruction.
Status: 200 created or updated; 400 invalid body/events/instruction or
lifecycle self-watch; 403 no active Run or missing access; 409 closed
subscriber or watch owned by another execution owner. Authentication and
resource-access errors follow [Overview](/api-reference/errors).
operationId: watchTask
parameters:
- name: id
in: path
required: true
description: id from the corresponding authorized response.
schema:
type: string
- name: X-Workspace-ID
in: header
required: false
description: >-
Company UUID for a personal token on company-scoped operations. A
company API key already binds its company.
schema:
type: string
format: uuid
requestBody:
required: true
content:
application/json:
schema:
$ref: '#/components/schemas/taskWatchRequestInput'
example:
events:
- delivered
- failed
- needs_input
instruction: Read the result and continue this conversation.
responses:
'200':
description: >-
TaskWatchResponse. Repeating registration for the same subscriber
and watched Task updates its events and instruction.
content:
application/json:
schema:
$ref: '#/components/schemas/taskWatchResponse'
'400':
description: Invalid request.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'401':
description: Authentication required.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'403':
description: Credential, company or resource access denied.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'404':
description: Resource unavailable to this caller.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'409':
description: Request failed; see the operation contract for the condition.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'429':
description: Rate limited; respect Retry-After when present.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'500':
description: Server error.
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
security:
- bearerAuth: []
components:
schemas:
taskWatchRequestInput:
type: object
properties:
events:
type: array
items:
type: string
instruction:
type: string
taskWatchResponse:
type: object
properties:
id:
type: string
task_id:
type: string
subscriber_task_id:
type: string
status:
type: string
events:
type: array
items:
type: string
instruction:
type: string
required:
- id
- task_id
- subscriber_task_id
- status
- events
- instruction
Error:
type: object
properties:
error:
type: string
code:
type: string
required:
- error
additionalProperties: true
securitySchemes:
bearerAuth:
type: http
scheme: bearer
description: >-
Company API key (mwk_) or personal access token (mel_). A PAT requires
X-Workspace-ID on company-scoped routes. An API key implies its own
company.
````
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