The social publishing layer for AI agents and SaaS

What you build on

Quickstart with curl

Every route below is in the OpenAPI spec and the API reference. Keys start with pw_live_ and go in a Bearer header.

curl https://postwire.io/api/brands \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "Acme Bakery"}'
# → { "ok": true, "brand": { "id": "BRAND_ID", "name": "Acme Bakery" } }

curl https://postwire.io/api/connect-link \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"brand_id": "BRAND_ID"}'
# → { "url": "https://postwire.io/connect/#…", "token": "…", "expires_in": 3600, "brand_id": "BRAND_ID" }

curl https://postwire.io/api/post \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "brand_id": "BRAND_ID",
    "platforms": ["linkedin", "bluesky"],
    "per_platform": {
      "linkedin": { "text": "Fresh sourdough every morning from 7am. Here is how we bake it." },
      "bluesky":  { "text": "Sourdough out of the oven at 7am." }
    },
    "idempotency_key": "acme-2026-10-15-sourdough"
  }'

curl https://postwire.io/api/webhooks \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/hooks/postwire",
       "events": ["post.published", "post.failed", "connection.reauth_required"]}'
# → 201 { "webhook": { … }, "secret": "whsec_…" }  (the secret is shown once)

Or give your agent the MCP server

The hosted server at https://postwire.io/api/mcp has 21 tools and accepts an API key or an OAuth 2.1 sign-in. It is listed in Claude's connector directory.

# Claude Code, hosted server, OAuth sign-in
claude mcp add --transport http --scope user postwire https://postwire.io/api/mcp
# then inside Claude Code: /mcp → postwire → Authenticate

# Same server with an API key from the environment
claude mcp add --transport http --scope user postwire https://postwire.io/api/mcp \
  --header 'Authorization: Bearer ${POSTWIRE_API_KEY}'

# Local over stdio
claude mcp add --env POSTWIRE_API_KEY=pw_live_your_key --transport stdio postwire \
  -- npx -y postwire-mcp

The multi-tenant flow above maps to tools: create_brand, create_connect_link (with brand_id), generate_posts, post_to_social, schedule_post and get_post_status. Setup for Cursor, VS Code, Windsurf, Codex and other clients: MCP client guides.

Guardrails your agent cannot remove

• Per API key or AI app: a monthly post cap, the networks and brands it may use, and "always needs approval". These limits are set from a signed-in dashboard session only (PUT /api/guardrails/{kind}/{id}), so a key cannot raise its own limits.
• Per brand: hold posts for approval by source (API key, AI agent over MCP, n8n, Make or Zapier, dashboard), by network, or when a post has a link, a price or a listed word. The rules are plain server-side checks, not AI.
• Who approves: the account owner, from the dashboard or an emailed link, or a client approver through a signed, single-use link (Pro and above). Never an API key and never an AI connector.
• Activity log with CSV export on every plan. Details: approvals and guardrails.

Plans for builders

From GET /api/plans. A brand is one business with all its connected networks. Approvals and per-key guardrails are on every paid plan.

Yearly billing is 20% off. White label covers the client portal and the connect and approval pages opened from a client link. Starter ($9, 3 brands) and every limit are on the pricing page.

What it costs by number of end users

Each end user has 5 networks and posts about 20 times a month on each. A PostWire brand, an Ayrshare profile and an Upload-Post profile each hold one end user with all their networks. Zernio charges per connected account, and bundle.social and Post for Me charge per post.

Zernio: 2 accounts free, accounts 3 to 10 at $6, 11 to 100 at $3, 101 and up at $1. Ayrshare Business is $599 with 30 profiles. Monthly prices, before any yearly discount. The vendors support different networks and features, and their prices change: check each linked page before you decide. PostWire's Scale holds up to 200 brands today.

Questions