Create a follow-up

POST

followups

Create a follow-up

curl --request POST \
  --url https://api.valendata.com/v1/followups \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "what": "the sign-in code from greenhouse.io",
  "where": {
    "kind": "inbox"
  },
  "match": {
    "kind": "code",
    "from_domain": "greenhouse.io"
  },
  "within": "15m"
}
'

import requests

url = "https://api.valendata.com/v1/followups"

payload = {
    "what": "the sign-in code from greenhouse.io",
    "where": { "kind": "inbox" },
    "match": {
        "kind": "code",
        "from_domain": "greenhouse.io"
    },
    "within": "15m"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    what: 'the sign-in code from greenhouse.io',
    where: {kind: 'inbox'},
    match: {kind: 'code', from_domain: 'greenhouse.io'},
    within: '15m'
  })
};

fetch('https://api.valendata.com/v1/followups', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.valendata.com/v1/followups",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'what' => 'the sign-in code from greenhouse.io',
    'where' => [
        'kind' => 'inbox'
    ],
    'match' => [
        'kind' => 'code',
        'from_domain' => 'greenhouse.io'
    ],
    'within' => '15m'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.valendata.com/v1/followups"

	payload := strings.NewReader("{\n  \"what\": \"the sign-in code from greenhouse.io\",\n  \"where\": {\n    \"kind\": \"inbox\"\n  },\n  \"match\": {\n    \"kind\": \"code\",\n    \"from_domain\": \"greenhouse.io\"\n  },\n  \"within\": \"15m\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.valendata.com/v1/followups")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"what\": \"the sign-in code from greenhouse.io\",\n  \"where\": {\n    \"kind\": \"inbox\"\n  },\n  \"match\": {\n    \"kind\": \"code\",\n    \"from_domain\": \"greenhouse.io\"\n  },\n  \"within\": \"15m\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.valendata.com/v1/followups")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"what\": \"the sign-in code from greenhouse.io\",\n  \"where\": {\n    \"kind\": \"inbox\"\n  },\n  \"match\": {\n    \"kind\": \"code\",\n    \"from_domain\": \"greenhouse.io\"\n  },\n  \"within\": \"15m\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "7f1c2e4a-9b3d-4c5e-8a6f-0d1e2f3a4b5c",
  "agent": "api",
  "conversation_id": "",
  "what": "the sign-in code from greenhouse.io",
  "where": {
    "kind": "inbox",
    "app": "",
    "address": "ada.lovelace@mail.valendata.com",
    "tool": "",
    "url": "",
    "run_id": ""
  },
  "match": {
    "kind": "code",
    "from_domain": "greenhouse.io",
    "sender": "",
    "recipient": "",
    "subject_has": "",
    "text_has": ""
  },
  "status": "waiting",
  "outcome": null,
  "found": null,
  "note": null,
  "since": "2026-10-10T09:00:00Z",
  "next_check_at": "2026-10-10T09:00:30Z",
  "deadline": "2026-10-10T09:15:00Z",
  "checks": 0,
  "created_at": "2026-10-10T09:00:00Z",
  "ended_at": null
}

{
  "detail": "The request is malformed: the body is not JSON, the cursor or Idempotency-Key is not valid.",
  "code": "invalid_json",
  "type": "invalid_request_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "The API key is missing, malformed, revoked, or expired.",
  "code": "unauthorized",
  "type": "authentication_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "The key lacks a scope, is limited to other skills or workflows, or you may not do this.",
  "code": "permission_denied",
  "type": "permission_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "It does not exist, or it is not yours to see.",
  "code": "not_found",
  "type": "invalid_request_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "A conflict with the current state, or a request with this Idempotency-Key is still running.",
  "code": "conflict",
  "type": "conflict_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "Invalid request — name: Field required",
  "code": "validation_error",
  "type": "invalid_request_error",
  "request_id": "3f9a1c2b7d4e",
  "param": "name",
  "errors": [
    {
      "type": "missing",
      "loc": [
        "body",
        "name"
      ],
      "msg": "Field required"
    }
  ]
}

{
  "detail": "Too many requests for this key, or too many runs in progress. Wait `Retry-After` seconds.",
  "code": "rate_limited",
  "type": "rate_limit_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "Something broke on our side. Retry; runs that fail on our side are refunded.",
  "code": "internal_error",
  "type": "api_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "A connected app, or the service that connects it, answered with an error or could not be reached.",
  "code": "upstream_error",
  "type": "api_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "This part of the API is not available on the server right now. Retry later.",
  "code": "service_unavailable",
  "type": "api_error",
  "request_id": "3f9a1c2b7d4e"
}

where is the place, match what counts as arrived, within how long to wait, all explained in Follow-ups. Durations are strings such as 15m, 2h, 1h30m, 10 minutes, or a number of seconds. The answer is the follow-up as waiting, with its id. Nothing calls you back: poll Get a follow-up until status is done. For kind: time, leave match and check_every out. Creating twice makes two waits, so send an Idempotency-Key to make a retry safe. See Idempotency.

Status	Why
`403`	The key lacks `followups:write`, or `apps:read` for a place in a connected app.
`404`	The app has no such tool. `detail` points to its tool list.
`409` `app_not_connected`	The app is not connected, or its connection expired. `detail.connect_url` connects it.
`422`	A field is wrong (`param` names it): a tool that writes, a `within` over 72 hours, a field that does not go with that `kind`, or you have no Valendata address yet.

You can have 25 follow-ups waiting at once; one more is refused with a sentence that says so. Cancel one to make room. MCP tool: create_followup.

Authorizations

Authorization

string

header

required

API key with the vd_sk_ prefix, as Authorization: Bearer vd_sk_.... Create keys in Settings → API Keys.

Headers

Idempotency-Key

string

Any unique string (such as your order id). Resending the same request with the same key within 24 hours returns the first answer (with Idempotent-Replayed: true) and does nothing twice; the same key with a different request is a 422 idempotency_key_reused.

Required string length: 1 - 255

Body

application/json

what

string

required

What you are waiting for, in plain words: shown to the user and read back with the outcome, e.g. 'the sign-in code from greenhouse.io'.

Required string length: 1 - 500

where

WhereRequest · object

required

Show child attributes

within

required

How long to wait (or when to check back): '90s', '15m', '2h', '1d', '1h30m', '10 minutes', or a number of seconds. At most 72 hours.

Example:

"15m"

match

MatchRequest · object | null

Not with kind time.

Show child attributes

check_every

How often to look, '90s', '15m', '2h', '1d', '1h30m', '10 minutes', or a number of seconds; at least 30 seconds. Default: what suits the place (an inbox is told on arrival; a web page is read every few minutes). Not for time.

Example:

"15m"

Response

The follow-up, waiting. Poll GET /v1/followups/{followup_id} for its outcome.

string

required

agent

enum<string>

required

Who is waiting: api for one made here; igris, session or brain for one an in-app agent made.

Available options:

igris,

session,

brain,

api

what

string

required

where

FollowupWhere · object

required

Show child attributes

status

enum<string>

required

waiting: timed and checked. done: ended (outcome says how). cancelled. failed: could not be checked (note says why).

Available options:

waiting,

done,

cancelled,

failed

conversation_id

string

default:""

The session or workflow of an in-app agent; empty here.

match

FollowupMatch · object

Show child attributes

outcome

enum<string> | null

found: it arrived (found holds it). time_up: a check-back's time came. expired: nothing came in time.

Available options:

found,

time_up,

expired

found

FollowupFound · object | null

The thing that arrived — only it, never the rest of the mailbox.

Show child attributes

note

string | null

One plain line on how it ended.

since

string<date-time> | null

Only things that arrived after this count.

next_check_at

string<date-time> | null

deadline

string<date-time> | null

checks

integer

default:0

How many times the place was looked in.

created_at

string<date-time> | null

ended_at

string<date-time> | null

Create a follow-up

curl --request POST \
  --url https://api.valendata.com/v1/followups \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "what": "the sign-in code from greenhouse.io",
  "where": {
    "kind": "inbox"
  },
  "match": {
    "kind": "code",
    "from_domain": "greenhouse.io"
  },
  "within": "15m"
}
'

import requests

url = "https://api.valendata.com/v1/followups"

payload = {
    "what": "the sign-in code from greenhouse.io",
    "where": { "kind": "inbox" },
    "match": {
        "kind": "code",
        "from_domain": "greenhouse.io"
    },
    "within": "15m"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    what: 'the sign-in code from greenhouse.io',
    where: {kind: 'inbox'},
    match: {kind: 'code', from_domain: 'greenhouse.io'},
    within: '15m'
  })
};

fetch('https://api.valendata.com/v1/followups', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.valendata.com/v1/followups",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'what' => 'the sign-in code from greenhouse.io',
    'where' => [
        'kind' => 'inbox'
    ],
    'match' => [
        'kind' => 'code',
        'from_domain' => 'greenhouse.io'
    ],
    'within' => '15m'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.valendata.com/v1/followups"

	payload := strings.NewReader("{\n  \"what\": \"the sign-in code from greenhouse.io\",\n  \"where\": {\n    \"kind\": \"inbox\"\n  },\n  \"match\": {\n    \"kind\": \"code\",\n    \"from_domain\": \"greenhouse.io\"\n  },\n  \"within\": \"15m\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.valendata.com/v1/followups")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"what\": \"the sign-in code from greenhouse.io\",\n  \"where\": {\n    \"kind\": \"inbox\"\n  },\n  \"match\": {\n    \"kind\": \"code\",\n    \"from_domain\": \"greenhouse.io\"\n  },\n  \"within\": \"15m\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.valendata.com/v1/followups")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"what\": \"the sign-in code from greenhouse.io\",\n  \"where\": {\n    \"kind\": \"inbox\"\n  },\n  \"match\": {\n    \"kind\": \"code\",\n    \"from_domain\": \"greenhouse.io\"\n  },\n  \"within\": \"15m\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "7f1c2e4a-9b3d-4c5e-8a6f-0d1e2f3a4b5c",
  "agent": "api",
  "conversation_id": "",
  "what": "the sign-in code from greenhouse.io",
  "where": {
    "kind": "inbox",
    "app": "",
    "address": "ada.lovelace@mail.valendata.com",
    "tool": "",
    "url": "",
    "run_id": ""
  },
  "match": {
    "kind": "code",
    "from_domain": "greenhouse.io",
    "sender": "",
    "recipient": "",
    "subject_has": "",
    "text_has": ""
  },
  "status": "waiting",
  "outcome": null,
  "found": null,
  "note": null,
  "since": "2026-10-10T09:00:00Z",
  "next_check_at": "2026-10-10T09:00:30Z",
  "deadline": "2026-10-10T09:15:00Z",
  "checks": 0,
  "created_at": "2026-10-10T09:00:00Z",
  "ended_at": null
}

{
  "detail": "The request is malformed: the body is not JSON, the cursor or Idempotency-Key is not valid.",
  "code": "invalid_json",
  "type": "invalid_request_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "The API key is missing, malformed, revoked, or expired.",
  "code": "unauthorized",
  "type": "authentication_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "The key lacks a scope, is limited to other skills or workflows, or you may not do this.",
  "code": "permission_denied",
  "type": "permission_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "It does not exist, or it is not yours to see.",
  "code": "not_found",
  "type": "invalid_request_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "A conflict with the current state, or a request with this Idempotency-Key is still running.",
  "code": "conflict",
  "type": "conflict_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "Invalid request — name: Field required",
  "code": "validation_error",
  "type": "invalid_request_error",
  "request_id": "3f9a1c2b7d4e",
  "param": "name",
  "errors": [
    {
      "type": "missing",
      "loc": [
        "body",
        "name"
      ],
      "msg": "Field required"
    }
  ]
}

{
  "detail": "Too many requests for this key, or too many runs in progress. Wait `Retry-After` seconds.",
  "code": "rate_limited",
  "type": "rate_limit_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "Something broke on our side. Retry; runs that fail on our side are refunded.",
  "code": "internal_error",
  "type": "api_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "A connected app, or the service that connects it, answered with an error or could not be reached.",
  "code": "upstream_error",
  "type": "api_error",
  "request_id": "3f9a1c2b7d4e"
}

{
  "detail": "This part of the API is not available on the server right now. Retry later.",
  "code": "service_unavailable",
  "type": "api_error",
  "request_id": "3f9a1c2b7d4e"
}

Overview

Skills

Marketplace

Runs

Skill versions

Improvements

Schedules

Workflows

Logins

Connected apps

Follow-ups

Background jobs

Notes

Account and usage

Webhooks

Create a follow-up

Authorizations

Headers

Body

Response