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 skills add outboundsync/skills --skill apigit clone --depth 1 https://github.com/outboundsync/skillsWrote 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/outboundsync/skills/api)<a href="https://agentmods.dev/skills/outboundsync/skills/api"><img src="https://agentmods.dev/badge/skills/outboundsync/skills/api/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/outboundsync/skills/api"><img src="https://agentmods.dev/badge/skills/outboundsync/skills/api.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00135 | $0.03186 |
| Opus 5.5 | $0.00054 | $0.01274 |
| Sonnet 5.5 | $0.00027 | $0.00637 |
| Haiku 4.5 | $0.00014 | $0.00319 |
Grade A, and why
api scanned grade A with 0 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 29d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OutboundSync API v1
Teach and lightly exercise the public API. Read-only. Never print, log, or commit the API key. Never print webhook signing secrets. Treat sources[].url and destinations[].url as sensitive (full paste only when the user needs to copy them).
Note: These instructions reflect OutboundSync best practices shared freely and without warranty of outcomes — see DISCLAIMER.md.
Render only the output shape below — no prose outside it.
Credentials
Prefer OutboundSync MCP when connected (https://mcp.outboundsync.com/mcp, streamable HTTP, Authorization: Bearer osapi_...). Otherwise REST with $OUTBOUNDSYNC_API_KEY from the environment against https://app.outboundsync.com/api/v1.
- MCP setup: https://outboundsync.com/docs/mcp/setup/
- API reference: https://outboundsync.com/docs/api/v1/
- Keys: https://outboundsync.com/docs/api/authentication/creating-api-keys/
Every REST path, its MCP tool, access rules, response fields, and error handling: references/endpoints.md. Prior-outreach contract: references/contacts-outreach.md. Rendered examples: references/examples.md.
Auth and scopes
| Concern | Rule |
|---|---|
| Header | Authorization: Bearer osapi_… (REST and MCP) |
read scope |
Every GET |
write scope |
retry_sync, replay_destination_delivery, pause_blocklist, resync_blocklist, and the webhook mutations — never from this skill |
| Account-scoped key | Sees all connections; required for /webhooks* |
| Connection-scoped key | Sees exactly one connection everywhere — expected, not an error; 403 on /webhooks*; may read /events for its connection |
| No API-enabled connection | Every authenticated route returns 403. Customers can't turn API access on themselves: ask OutboundSync support to enable it for a connection |
canUseWebhooks |
Account flag for Sync Monitoring. Off → 403 "Platform webhooks are not enabled for this account" on /webhooks* and /events reads. /me does not expose it; only the 403 reveals it. |
| Rate limits | 120 / 60s per account; /contacts/outreach 600 / 60s. Read X-RateLimit-Remaining when present (not on /contacts/outreach or the per-IP 429); on 429 wait Retry-After. |
What ships with it
3 files 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.
- 29d ago Changed 283fb28206fe
- 1mo ago Changed · +24 lines · +14 tokens per session 06168bc45b12
- 1mo ago Changed · +18 lines 6fc0b8bea06a
- 2mo ago First seen · 148 lines · 121 tokens per session scan A 900ce7d0597a
api is a skill published in the GitHub repository outboundsync/skills (2 stars, last pushed 8d ago), licensed MIT. It adds 135 tokens to every session and 3,186 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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