Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/mifunedev/openharness/post-bridgenpx skills add mifunedev/openharness --skill post-bridgegit clone --depth 1 https://github.com/mifunedev/openharnessWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mifunedev/openharness/post-bridge)<a href="https://agentmods.dev/skills/mifunedev/openharness/post-bridge"><img src="https://agentmods.dev/badge/skills/mifunedev/openharness/post-bridge.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00077 | $0.03695 |
| Opus 5 | $0.00039 | $0.01847 |
| Sonnet 5 | $0.00015 | $0.00739 |
| Haiku 4.5 | $0.00008 | $0.00369 |
Grade B, and why
post-bridge scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
curl -s -X PUT -H "Content-Type: video/mp4" --data-binary @reel.mp4 "$REEL_URL" Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s -H "Authorization: Bearer $POST_BRIDGE_API_KEY" \ How it starts
The opening of the file, as written. The whole thing — 392 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Post Bridge API
Manage social media posts across connected accounts using the Post Bridge API. Authentication uses the POST_BRIDGE_API_KEY environment variable.
Authentication
All requests require a Bearer token header. Verify the key is set before making calls:
echo "Key set: ${POST_BRIDGE_API_KEY:+yes}"
Use this header on every request:
Authorization: Bearer $POST_BRIDGE_API_KEY
Safety Gate for External Side Effects
Creating, scheduling, or immediately publishing a post is an external side effect. Default to a dry-run preview or draft unless the user explicitly asks for a live/scheduled post and confirms the final payload.
Before any non-draft POST /v1/posts (including scheduled posts), show a final review that includes:
- destination account IDs and platforms
- caption text and platform/account overrides
- media IDs or
media_urls - draft vs. scheduled vs. immediate publish state, including
scheduled_at/use_queue - the endpoint and redacted JSON payload to be submitted
Then ask for the exact confirmation phrase POST BRIDGE LIVE CONFIRMED. Do not send the non-draft create request until the user replies with that phrase. If confirmation is absent or ambiguous, either stop after the preview or create a draft with "is_draft": true when the user wants a saved draft.
Read-only requests (accounts, analytics, post-results) and media preparation (signed upload URL + file upload) do not require the final confirmation, but still avoid logging secrets or signed URLs beyond what is needed for the task.
Core Workflow
Publishing a post follows four steps. Execute them in order — each step depends on the previous. Step 4 must pass the Safety Gate above before any non-draft create/schedule request.
Step 1: Retrieve Social Accounts
Identify which account(s) to publish to. Capture the account id values (these are numbers) for use in post creation.
curl -s -H "Authorization: Bearer $POST_BRIDGE_API_KEY" \
"https://api.post-bridge.com/v1/social-accounts" | jq .
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 4d ago First seen · 392 lines · 77 tokens per session scan B 12b8ac8482be
post-bridge is a skill published in the GitHub repository mifunedev/openharness (36 stars, last pushed yesterday), licensed Apache-2.0. It adds 77 tokens to every session and 3,695 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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