buffer-publisher（缓冲发布者）

Last used: 2026-03-25 Status: Active — PRIMARY for LinkedIn

Buffer Publisher

When to Use This / When NOT to Use This

Use Buffer when:

• Publishing a post to LinkedIn (nissandookeran) or Twitter/X (redditech) — immediately or scheduled
• Queuing a post for Buffer's automatic optimal-time slot
• Any social publishing task from Liv or the content pipeline

Do NOT use Buffer for:

• Bluesky — not connected, no tool available yet
• Drafting content — Buffer publishes, it doesn't draft. Write content first, then call this skill.
• Reading/analytics — Buffer GraphQL can query posts but that's out of scope here; check Buffer dashboard directly
• Any platform other than LinkedIn and Twitter/X

Only tool available: Typefully was cancelled 2026-03-25. Buffer is the single social publishing surface. There is no fallback.

Credentials

• API key: op://OpenClaw/Buffer API Credentials/credential
• API base: https://api.buffer.com/graphql
• Auth header: Authorization: Bearer <key>

Connected Channels

Publish Immediately (shareNow)

import json, subprocess

BUFFER_KEY = "<key from 1Password>"
CHANNEL_ID = "69c29382af47dacb694d24b4"  # LinkedIn
# or  "69c29939af47dacb694d3d1f"  # Twitter/X

payload = {
    "query": """mutation CreatePost($input: CreatePostInput!) { 
        createPost(input: $input) { 
            ... on PostActionSuccess { post { id status } } 
        } 
    }""",
    "variables": {
        "input": {
            "channelId": CHANNEL_ID,
            "text": "Your post text here",
            "schedulingType": "automatic",
            "mode": "shareNow"
        }
    }
}

result = subprocess.run(
    ["curl", "-s", "-X", "POST",
     "-H", f"Authorization: Bearer {BUFFER_KEY}",
     "-H", "Content-Type: application/json",
     "-d", json.dumps(payload),
     "https://api.buffer.com/graphql"],
    capture_output=True, text=True
)
d = json.loads(result.stdout)
post_id = d["data"]["createPost"]["post"]["id"]
status = d["data"]["createPost"]["post"]["status"]
print(f"Post ID: {post_id}, Status: {status}")
# status "sent" = published immediately

Schedule a Post for a Specific Time

Use mode: "customScheduled" + a dueAt ISO8601 UTC timestamp. Do NOT use scheduledAt — that field does not exist on the Post type.

import json, subprocess
from datetime import datetime, timezone

BUFFER_KEY = "<key from 1Password>"
CHANNEL_ID = "69c29382af47dacb694d24b4"  # LinkedIn

# Schedule for 9am Sydney time (UTC+11 in AEDT) = 22:00 UTC prior day
# Always convert to UTC before passing to Buffer
scheduled_utc = "2026-03-27T22:00:00Z"  # ISO8601 UTC — the Z suffix is required

payload = {
    "query": """mutation CreatePost($input: CreatePostInput!) { 
        createPost(input: $input) { 
            ... on PostActionSuccess { post { id status dueAt } } 
        } 
    }""",
    "variables": {
        "input": {
            "channelId": CHANNEL_ID,
            "text": "Your scheduled post text here",
            "schedulingType": "automatic",
            "mode": "customScheduled",
            "dueAt": scheduled_utc
        }
    }
}

result = subprocess.run(
    ["curl", "-s", "-X", "POST",
     "-H", f"Authorization: Bearer {BUFFER_KEY}",
     "-H", "Content-Type: application/json",
     "-d", json.dumps(payload),
     "https://api.buffer.com/graphql"],
    capture_output=True, text=True
)
d = json.loads(result.stdout)
post = d["data"]["createPost"]["post"]
print(f"Post ID: {post['id']}, Status: {post['status']}, Due: {post['dueAt']}")
# status "buffer" = queued/scheduled (not yet sent)

What Success Looks Like

A successful createPost response body looks like this:

{
  "data": {
    "createPost": {
      "post": {
        "id": "67e3a1b2c4d5e6f7a8b9c0d1",
        "status": "sent"
      }
    }
  }
}

• status: "sent" → published immediately (shareNow)
• status: "buffer" → queued or scheduled (will publish at dueAt)
• If data.createPost is null or missing post, the mutation failed silently — check for a top-level errors array

Failure response example:

{
  "errors": [
    {
      "message": "Value \"shareNOW\" does not exist in \"SchedulingType\" enum.",
      "locations": [{"line": 1, "column": 42}]
    }
  ],
  "data": null
}

Key Schema Notes

• schedulingType enum: automatic | notification (NOT "now", NOT "shareNow")
• mode enum: addToQueue | shareNow | shareNext | customScheduled | recommendedTime
• Use automatic + shareNow for immediate publish
• Use automatic + customScheduled + dueAt for scheduled posts
• dueAt field takes ISO8601 UTC datetime string (NOT scheduledAt — that field doesn't exist on Post type)
• Response type is a union — always use ... on PostActionSuccess fragment
• CoreApiError does NOT exist in schema — omit error fragment or use other error types
• No draft field in CreatePostInput — omit it

Get Connected Channels

curl -s -X POST \
  -H "Authorization: Bearer $BUFFER_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query": "{ account { id name email channels { id name service } } }"}' \
  https://api.buffer.com/graphql

Twitter/X Threads via Buffer

Buffer does not support native thread composition. Post as a single update with tweets separated by \ \ ---\ \ . If true threading is ever needed, evaluate alternative tools at that point.

Routing Rules

Typefully cancelled 2026-03-25. No backup — Buffer is the only social publishing tool.

Common Mistakes

1. Wrong enum value for schedulingType

- ❌ "schedulingType": "now" → enum error - ❌ "schedulingType": "shareNow" → enum error (shareNow is a mode value, not a schedulingType) - ✅ "schedulingType": "automatic" (almost always what you want)

1. Using scheduledAt instead of dueAt

- ❌ "scheduledAt": "2026-03-27T22:00:00Z" → field does not exist, silently ignored or errors - ✅ "dueAt": "2026-03-27T22:00:00Z"

1. Forgetting Content-Type: application/json

- Returns "Unsupported Content-Type" error - Always include -H "Content-Type: application/json" in curl calls

1. Using the legacy v1 API base URL

- ❌ https://api.bufferapp.com/1/ → returns 500, dead endpoint - ✅ https://api.buffer.com/graphql

1. Including CoreApiError in the error fragment

- This type does not exist in the schema. Omit it or you'll get a schema validation error.

1. Including "draft": true in CreatePostInput

- This field doesn't exist. Buffer has no draft state via API — posts are either queued or live.

1. Timezone confusion with dueAt

- Buffer expects UTC. Nissan is AEDT (UTC+11). Always convert: 9am Sydney = 10pm UTC prior day.

Troubleshooting

• "Unsupported Content-Type" → must use Content-Type: application/json
• 500 from bufferapp.com → legacy v1 API is dead, use api.buffer.com/graphql
• "Value X does not exist in enum" → check enum values via introspection: { __type(name: "SchedulingType") { enumValues { name } } }