Bearer keys, scoped
Live and test keys. Scopes per resource. Rotate without downtime.
v1 live · all systems operational
WhatsApp + Instagram
API, plain and fast.
One REST API and one MCP server. Read Instagram DMs, send WhatsApp replies, qualify hot leads, sync to your CRM. Free on every plan and on the 10-day Pro trial.
- v1 endpoints
- 14
- MCP tools
- 12
- req/min · Pro
- 2.4k
Example · POST /v1/conversations/:id/messages
# Send a reply from any backend, any agent, any cron
curl -X POST https://instantreply.up.railway.app/v1/conversations/$ID/messages \
-H "Authorization: Bearer $IR_API_KEY" \
-H "Content-Type: application/json" \
-d '{ "content": "On its way. Tracking link to follow." }'
# 201 Created
{ "id": "msg_8f2a", "direction": "outbound", "delivered_at": "..." }Bearer auth. JSON in, JSON out. ir_test_ keys never deliver, ever.
What you ship with
Production primitives, not toys.
MCP server, day one
One npx command and Claude, Cursor, or Windsurf is in your inbox.
Signed webhooks
HMAC-SHA256, ordered delivery, 30-day retry log per endpoint.
Sandbox by default
ir_test_ keys hit seeded data. Build the full integration before sending one real message.
Idempotency, cursors
Pass Idempotency-Key on POST. Cursor pagination on every list. No duplicate side effects.
Predictable errors
{ error: { code, message, doc_url, request_id } } on every failure. X-Request-Id on every response.
First call · five minutes
Three lines, one inbox.
- 01
Create a key
Settings → API Keys → New. Pick scopes. Copy once.
dotenv # .env IR_API_KEY=ir_live_3f2a... - 02
List conversations
Cursor pagination, 100 per page max.
bash curl https://instantreply.up.railway.app/v1/conversations \ -H "Authorization: Bearer $IR_API_KEY" - 03
Send the reply
Sandboxed automatically for ir_test_ keys.
bash curl -X POST .../v1/conversations/$ID/messages \ -H "Authorization: Bearer $IR_API_KEY" \ -d '{"content":"On its way."}'
Included on every plan
No developer tier. No card on the trial.
| Plan | Requests / min | Active keys | Webhooks | MCP server |
|---|---|---|---|---|
| Free | 30 | 1 | 1 | Read-only |
| Trial (10 days, Pro) | 600 | 5 | 10 | Full |
| Starter · $59 / mo | 120 | 2 | 3 | Full |
| Growth · $129 / mo | 600 | 5 | 10 | Full |
| Pro | 2,400 | 25 | 25 | Full + priority |
| Enterprise | Custom | Unlimited | Custom | Dedicated |
Surfaces
Pick the entry point.
You already have access
Open the dashboard. Create a key. Make a call.
The API ships with your account. No application form, no review queue, no separate billing.