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openapi: 3.2.0
info:
title: Indexed.vc Webhooks API
version: 1.0.0
description: 'Company intelligence API providing comprehensive data on private companies,
funding history, and investor relationships.'
contact:
name: Indexed.vc Support
url: https://indexed.vc
license:
name: Proprietary
servers:
- url: https://indexed.vc/api/v1
description: Production
security:
- ApiKeyAuth: []
tags:
- name: Webhooks
paths:
/webhooks:
get:
operationId: listWebhooks
summary: List webhook endpoints
description: FREE. Signing secrets are masked (whsec_…last4) — the full secret is only shown at creation.
responses:
'200':
description: Endpoints + per-tier limit
'401':
$ref: '#/components/responses/AuthError'
'403':
$ref: '#/components/responses/ValidationError'
tags:
- Webhooks
post:
operationId: createWebhook
summary: Create a webhook endpoint (Silver and up)
description: 'Subscribe a URL to funding-round alerts. When a new funding round lands
for a company on your watchlist (`list_id` — one of your saved company
lists), or any company if unscoped, Indexed POSTs a signed JSON event
to your endpoint within ~5 minutes.
**Billing:** 1 credit per successfully delivered event. Test sends and
retries are free; a delivery is never charged twice (idempotent per
delivery id). Deliveries pause if your credits are exhausted and resume
on the retry schedule once topped up.
**Delivery + retries:** 10s timeout, HTTPS only, redirects refused.
Non-2xx responses retry on a backoff of 1m → 10m → 1h → 6h → 24h, then
dead-letter. 20 consecutive failures auto-disable the endpoint
(re-enable via PATCH `is_active: true`).
**Delivery semantics — at-least-once.** Like Stripe/GitHub webhooks, an
event may occasionally be delivered more than once (e.g. your endpoint
200s but the ack is lost, or a worker is reclaimed after a crash).
**Dedupe on `X-Indexed-Delivery-Id`** — process each id once. Billing is
exactly-once regardless: a given delivery is charged at most one credit
even if re-sent (idempotent per delivery id).
**Verifying signatures:** every request carries
`X-Indexed-Signature: t=,v1=` where
`v1 = HMAC_SHA256(secret, "{t}.{raw_body}")`. Recompute over the raw
body, compare constant-time, and reject if `|now - t| > 300s`:
```js
const [t, v1] = header.match(/t=(\d+),v1=([0-9a-f]+)/).slice(1)
const expected = crypto.createHmac(''sha256'', secret).update(`${t}.${rawBody}`).digest(''hex'')
const valid = crypto.timingSafeEqual(Buffer.from(expected), Buffer.from(v1))
&& Math.abs(Date.now()/1000 - t) ",
"event": "domain.coverage.added",
"created_at": "2026-09-01T12:00:00Z",
"data": {
"requested_domain": "example.com",
"company": { "id", "name", "slug", "website", "industries", "hq_city", "hq_country" },
"domain_match": {
"queried": "example.com",
"canonical_domain": "example.com",
"matched_via": "canonical_domain"
}
}
}
```
**Event payload** (`funding_round.created` / `funding_round.updated`):
```json
{
"id": "",
"event": "funding_round.created",
"created_at": "2026-07-03T12:00:00Z",
"data": {
"company": { "id", "name", "slug", "website", "industries", "hq_city", "hq_country" },
"funding_round": {
"event_type": "series_b", "round_name": "Series B",
"amount_raised_usd": 42000000, "announced_date": "2026-07-01",
"post_money_valuation": 400000000, "press_url": "https://…",
"investors": [{ "name": "Example Ventures", "is_lead": true }]
}
}
}
```
Endpoint limits: Silver 2, Gold 3, Platinum 10, Enterprise 25.'
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- url
properties:
url:
type: string
description: HTTPS endpoint (public host — internal/private addresses rejected)
description:
type: string
maxLength: 200
event_types:
type: array
items:
type: string
enum:
- funding_round.created
- funding_round.updated
- company.created
- company.updated
- investor.created
- domain.coverage.added
list_id:
type: string
format: uuid
description: Scope to one of your saved company lists (watchlist). Omit for all companies.
responses:
'201':
description: Created. `secret` (whsec_…) is returned ONLY here — store it to verify signatures.
'400':
$ref: '#/components/responses/ValidationError'
'401':
$ref: '#/components/responses/AuthError'
'403':
$ref: '#/components/responses/ValidationError'
tags:
- Webhooks
/webhooks/{id}:
get:
operationId: getWebhook
summary: Get a webhook endpoint (FREE)
description: Fetch a single endpoint you own, with its secret masked. Costs no credits.
parameters:
- name: id
in: path
required: true
schema:
type: string
format: uuid
responses:
'200':
description: Endpoint (secret masked)
'404':
description: Not found or not owned by you
tags:
- Webhooks
patch:
operationId: updateWebhook
summary: Update a webhook endpoint
description: Update url/event_types/list_id/description or pause/resume via is_active. Re-enabling resets the failure counter.
parameters:
- name: id
in: path
required: true
schema:
type: string
format: uuid
responses:
'200':
description: Updated endpoint (secret masked)
'404':
description: Not found or not owned by you
tags:
- Webhooks
delete:
operationId: deleteWebhook
summary: Delete a webhook endpoint
parameters:
- name: id
in: path
required: true
schema:
type: string
format: uuid
responses:
'200':
description: Deleted
'404':
description: Not found or not owned by you
tags:
- Webhooks
/webhooks/{id}/test:
post:
operationId: testWebhook
summary: Send a sample signed event (FREE)
description: 'Sends a sample event (flagged `"test": true`) shaped for one of the endpoint''s subscribed types — pass `{"event_type": "..."}` to pick one, default is the first subscribed type. Never consumes credits.'
parameters:
- name: id
in: path
required: true
schema:
type: string
format: uuid
responses:
'200':
description: '{ delivered, response_code, error, credits_charged: 0 }'
'404':
description: Not found
tags:
- Webhooks
/webhooks/{id}/deliveries:
get:
operationId: listWebhookDeliveries
summary: Recent delivery log (FREE)
description: Last 50 deliveries with status (pending/delivered/failed/dead/credit_blocked), attempts, response codes, and credits_charged — the per-event billing audit trail. Test sends appear with event_type "test" and credits_charged 0.
parameters:
- name: id
in: path
required: true
schema:
type: string
format: uuid
responses:
'200':
description: Delivery log entries
'404':
description: Not found
tags:
- Webhooks
components:
responses:
ValidationError:
description: Invalid request parameters
headers:
X-Request-Id:
schema:
type: string
format: uuid
content:
application/json:
schema:
$ref: '#/components/schemas/ApiError'
AuthError:
description: Missing, invalid, or insufficient API key
headers:
X-Request-Id:
schema:
type: string
format: uuid
content:
application/json:
schema:
$ref: '#/components/schemas/ApiError'
schemas:
ApiError:
type: object
required:
- error
- code
properties:
error:
type: string
description: Human-readable error message
code:
type: string
description: Machine-readable error code
reason:
type: string
enum:
- credits_exhausted
- overage_cap_reached
- no_active_period
remaining:
type: integer
minimum: 0
top_up_url:
type: string
format: uri
top_up_pack:
type: object
properties:
id:
type: string
example: pack_5k
credits:
type: integer
example: 5000
price_cents:
type: integer
example: 20000
request_id:
type: string
format: uuid
description: Correlation ID (also in X-Request-Id header)
details:
type: array
description: Present for validation errors
items:
type: object
properties:
field:
type: string
message:
type: string
securitySchemes:
ApiKeyAuth:
type: apiKey
in: header
name: X-API-Key
description: API key in format `idx_<32chars>`. Available on every plan; entity detail and reveal spend credits on every plan, while bulk enrichment, webhooks, scheduled exports and listing/sorting require a paid plan (Silver+).