Sendpaper vs Hindsight
A side-by-side look at the Sendpaper and Hindsight MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Sendpaper for delivery work over a hosted endpoint; choose Hindsight for knowledge & memory as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Sendpaper when
- You need dedicated capabilities in the Delivery domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: No auth required.
- You want tools like
get_pricing, create_postcard, create_letter.
Choose Hindsight when
- You need dedicated capabilities in the Knowledge & Memory domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
HINDSIGHT_API_LLM_API_KEY.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Delivery | Knowledge & Memory |
| Quality signal | 59/100 · Good | 57/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | No auth required | API key required |
| Pricing | Paid service | Free |
| Required env vars | None listed | HINDSIGHT_API_LLM_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 51,891 |
| Directory activity | 1 views 0 installs 0 upvotes | 13 views 0 installs 0 upvotes |
| Tools | 6 | Not listed |
| Full listing | View Sendpaper | View Hindsight |
Tools & capabilities
Sendpaper tools 6
get_pricingList mail products and prices (USD, printing + USPS First-Class postage included, US addresses only).create_postcardCreate a postcard order (4x6, 6x9 or 6x11) and get a payment link. Front layouts: a big headline on a color, one photo, a photo with a caption, or a collage of 2-4 photos; the back carries the message (handwriting, serif or sans) and addresses. Set express for USPS Priority Mail (2-3 days, tracked). Mails only after the user pays.create_letterCreate a printed letter order (8.5x11, mailed in a #10 envelope) and get a payment link. Either write it (content.body, up to ~3 pages, optional photo) or mail the user's own PDF (content.pdf_url, a public https link, up to 6 pages). Set certified to "certified" for USPS Certified Mail with tracking and proof of delivery, or "certified_return_receipt" to add the recipient's signature; use these when the user needs proof (tax notice replies, lease notices, disputes, demand letters). Or set express for USPS Priority Mail (not with certified). Prices: get_pricing. Mails only after the user pays.pay_orderPay for an unpaid order with a Stripe shared payment token (spt_…) the user approved, scoped to at least the order amount in USD. For an order created with recipients, this pays for the whole group at once (scope the token to batch.price). On success the order is paid and goes to print. Use only after the user approved the purchase.get_orderGet the status of a postcard or letter order by id (ord_...).cancel_orderCancel an order that has not been paid yet. Paid orders can be cancelled by emailing support before they are printed.
Hindsight tools
No tool names declared yet. Check the project README from the listing page.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Sendpaper
{
"mcpServers": {
"sendpaper": {
"url": "https://sendmypaper.com/mcp"
}
}
}
Hindsight
{
"mcpServers": {
"vectorize-io-hindsight": {
"command": "npx",
"args": [
"-y",
"@vectorize-io/hindsight-coding-agents"
],
"env": {
"HINDSIGHT_API_LLM_API_KEY": "YOUR_HINDSIGHT_API_LLM_API_KEY_HERE"
}
}
}
}
Frequently asked questions
Sendpaper is categorized under Delivery and uses a remote HTTP/SSE transport. Hindsight belongs to Knowledge & Memory and uses a local stdio subprocess. Pick Sendpaper for delivery work and Hindsight for knowledge & memory.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Sendpaper is listed as a paid service. Auth: no auth required. Hindsight is listed as free. Auth: api key required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add sendpaper and vectorize-io-hindsight as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Sendpaper has a quality signal of 59/100 (Good) with 1 views, 0 installs and 0 GitHub stars. Hindsight has 57/100 (Good) with 13 views, 0 installs and 51,891 GitHub stars.