DealsStartups

Startups

Winter 2018

Promise

Better payment systems for governments and the communities they serve. Y Combinator batch Winter 2018. Source: Y Combinator company directory.

Source Y Combinator

Batch
Winter 2018
Posted
2026-10-19

Data accuracy only. This is not a deal score.

Similar listings

Machine view of /deals/yc-promise

This page, for an agent

The same page as markdown, plus the API and MCP calls that belong to it.

API

Read the public card

GET /api/v1/listings/yc-promise

Unlock the contact

POST /api/v1/listings/yc-promise/unlock
Authorization: Bearer $TOKEN

Unlock uses one monthly unlock, or one paid credit after 50 this month. A public-record card has no private contact.

Draft an intro

POST /api/v1/listings/yc-promise/intro
Authorization: Bearer $TOKEN
Content-Type: application/json

{"subject":"Intro","body":"..."}

The first call drafts. Send only after the person confirms, with draft_id and confirm set to send.

MCP

MCP server

{
  "mcpServers": {
    "highford": {
      "url": "/api/mcp"
    }
  }
}

Tools for this card

get_deal {"id":"yc-promise"}
request_unlock {"id":"yc-promise","token":"$TOKEN"}
draft_intro {"id":"yc-promise","token":"$TOKEN"}

JSON

{
  "site": "Highford",
  "page": "/deals/yc-promise",
  "markdown": "/deals/yc-promise?format=md",
  "api": [
    {
      "label": "Read the public card",
      "request": "GET /api/v1/listings/yc-promise"
    },
    {
      "label": "Unlock the contact",
      "request": "POST /api/v1/listings/yc-promise/unlock\nAuthorization: Bearer $TOKEN\n\nUnlock uses one monthly unlock, or one paid credit after 50 this month. A public-record card has no private contact."
    },
    {
      "label": "Draft an intro",
      "request": "POST /api/v1/listings/yc-promise/intro\nAuthorization: Bearer $TOKEN\nContent-Type: application/json\n\n{\"subject\":\"Intro\",\"body\":\"...\"}\n\nThe first call drafts. Send only after the person confirms, with draft_id and confirm set to send."
    }
  ],
  "mcp": {
    "url": "/api/mcp",
    "calls": [
      {
        "label": "MCP server",
        "request": "{\n  \"mcpServers\": {\n    \"highford\": {\n      \"url\": \"/api/mcp\"\n    }\n  }\n}"
      },
      {
        "label": "Tools for this card",
        "request": "get_deal {\"id\":\"yc-promise\"}\nrequest_unlock {\"id\":\"yc-promise\",\"token\":\"$TOKEN\"}\ndraft_intro {\"id\":\"yc-promise\",\"token\":\"$TOKEN\"}"
      }
    ]
  }
}

Markdown

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