Capacities Blocks API

Block content operations on objects

Operations 4

POST /blocks/append Append blocks #
POST /blocks/daily-note/append Append blocks to daily note #
PATCH /blocks/block Update block #
DELETE /block Delete block #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/capacities-io:capacities-io-blocks-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

capacities-io-blocks-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Capacities Blocks API
  version: 1.0.0
  termsOfService: https://capacities.io/terms-and-conditions
  description: 'Interactive **reference** for all routes of the Capacities API.


    You can add your `cap-api-…` token in the **`Bearer Token`** field to make requests in this dashboard.'
  x-scalar-sdk-installation:
  - lang: Node
    description: 'Install the Capacities TypeScript SDK:'
    source: "npm install @capacities/api\n\nconst capacities = new CapacitiesClient({\n  apiToken: 'cap-api-1lNgD7****' \n})"
servers:
- url: https://api.capacities.io
security:
- bearerAuth: []
tags:


# --- truncated at 32 KB (66 KB total) ---
# Full source: https://artifacts.apis.io/capacities-io/openapi/capacities-io-blocks-api-openapi.yml