ATPI

AT Protocol API

Resolve any AT Protocol URI. Get JSON back.

Public AT Protocol data, one URL away. Read accounts, collections, and records from your browser, terminal, or code. No authentication required.

Just prefix atpi. to an AT Protocol URI.https://atpi.at://sri.xyz

Try it out

Enter an AT URI, handle, or DID to resolve public data.

Response:

Access methods

From a browser tab to a stamped envelope. Pick your way in.

Browser / Postman / CodeDirect URL access. Just prefix atpi. to any AT URI and get JSON data instantly. No authentication needed.

# Direct browser access https://atpi.at://sri.xyz https://atpi.at://alice.bsky.social/app.bsky.feed.post https://atpi.at://did:plc:7gm5ejhut7kia2kzglqfew5b/app.bsky.feed.post/3lszcx7zf622q # With parameters https://atpi.at://alice.bsky.social/app.bsky.feed.post?limit=10 https://atpi.at/?uri=at://alice.bsky.social

cURLPerfect for scripts and automation. Pipe to jq, grep, or your favorite tools.

# Basic GET request curl https://atpi.at://sri.xyz # With collection and parameters curl "https://atpi.at://alice.bsky.social/app.bsky.feed.post?limit=10" # Pretty print with jq curl https://atpi.at://sri.xyz | jq '.repoInfo.handle'

NPM CLIFull-featured terminal tool with tab completion. Resolve and explore AT Protocol URLs with formatted JSON output.

When curl https://atpi. feels too long, just type atpi

npm install -g atpi

# Basic resolution atpi at://sri.xyz atpi at://alice.bsky.social/app.bsky.feed.post # Tab completion for everything atpi at://sri.xyz/<TAB> # Lists all collections atpi at://sri.xyz/app.bsky.feed.post/<TAB> # Lists all records atpi at://sri.xyz/app.bsky.gr<TAB> # Completes to app.bsky.graph # Multiple URLs at once atpi at://sri.xyz at://alice.bsky.social # Process with jq atpi at://sri.xyz | jq '.repoInfo.handle'

View on NPM

Chrome ExtensionHover over at:// URLs on any webpage for instant JSON previews. No context switching required.

# Works on any webpage • Automatically detects all AT URIs • Hover for instant JSON preview • Local/Remote resolution modes • Enable/disable per domain

Install Extension

VS Code ExtensionHover for instant JSON previews and smart autocompletion. Resolve AT URIs without leaving your editor.

# Key features: • Hover over at:// URLs for instant JSON preview • IntelliSense dropdown shows collections/records after each "/" • Smart autocompletion for AT Protocol paths

Install from Marketplace

Install from Open VSX

Email APISend an email with an AT URI in the subject line, get JSON data as reply.

Latency: 1-2 minutes

To: [email protected] Subject: at://sriganesh.bsky.social

Send Email

Snail Mail APIJSON via USPS. Maybe the only GET API that requires a "POST".

Latency: 3-5 business days

Send SASE to:

ATPI
PO BOX 2
HOLMDEL, NJ 07733

Include your AT Protocol URL request

How it works:
1. Write your AT Protocol URL on paper
2. Include a self-addressed stamped envelope
3. Mail it to our PO Box (Box 2, same as @ key)
4. Receive printed JSON response
Bonus: You might also receive some stickers!

API reference

URL Formats

https://atpi.at://[at-uri]
https://atpi.at/at://[at-uri]
https://atpi.at/[did-or-handle]/[collection]/[rkey]
https://atpi.at/?uri=[at-uri]

Parameters

cursor: Pagination cursor for collections
limit: Records per page (1-100, default: 50)

Example Response

{
  "uri": "at://did:plc:dcy5vn7o7vh7xi6qktrgpj7w/app.bsky.feed.post/3lry27bsx2s2z",
  "cid": "bafyreibfv3y6spvvi742kv3xsiqinoomixbkzhlzwetcqmgpk5ifoy7kfu",
  "value": {
    "text": "Test Post",
    "$type": "app.bsky.feed.post",
    "langs": ["en"],
    "createdAt": "2025-06-19T17:26:07.872Z"
  }
}
            

Source Code

Explore the code, contribute, or build your own integrations.

ATPI Server

Core ATPI service and API

NPM Package

CLI tool for terminal

Chrome Extension

Browser extension

VS Code Extension

Code Editor integration