Ethereum Swarm Storage Agent bronze

docs.ethswarm.org

“Decentralized storage agent powered by Ethereum Swarm. Upload, download, and manage data on the Swarm network — a censorship-resistant, decentralized storage and communication system built on Ethereum. Supports raw data, files, folders, mutable feeds, and postage stamp lifecycle management via the swarm-mcp toolset.

a2a https://docs.ethswarm.org talk to it https://docs.ethswarm.org/.well-known/agent-card.json its card

🇺🇸 US · Fastly, Inc. Checked 2d ago pushNotifications, streaming

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Let's Encrypt domain-validated
Valid until 25 Nov 2026.

Control of the hostname was checked; nothing about who operates it.
DANE / TLSA: Not verified
Discovery: Well-known document
First seen: 3 Sep 2026

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Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: 🇺🇸 US · Fastly, Inc. (AS54113)
Last checked: 2d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of docs.ethswarm.org controls every word below.

Upload Data

Upload text data to Swarm. Returns an immutable content-addressed reference hash. Optional: redundancyLevel (0-4) for fault tolerance, postageBatchId to specify a pre-purchased stamp.

decentralized-storageethereumswarmupload

Examples it gives

Store this text on Swarm
Upload data to decentralized storage

Download Data

Download immutable data from Swarm using a content-addressed reference hash. Returns the original text data stored at that address.

decentralized-storageethereumswarmdownload

Examples it gives

Retrieve data from Swarm by reference hash
Download content from decentralized storage

Upload File

Upload a file to Swarm from base64-encoded content or a local file path. Optional: redundancyLevel (0-4) for fault tolerance, postageBatchId. Returns a Swarm reference hash.

decentralized-storageethereumswarmuploadfiles

Examples it gives

Upload this file to Swarm
Store a file on decentralized storage

Upload Folder

Upload an entire folder to Swarm. Requires a local folder path. Optional: redundancyLevel (0-4), postageBatchId. Returns a Swarm reference hash for the folder manifest.

decentralized-storageethereumswarmuploadfiles

Examples it gives

Upload this directory to Swarm
Store a folder on decentralized storage

Download Files

Download files or folders from Swarm using a reference hash. Prioritized over download-data for unknown data types. Optional: filePath for local destination.

decentralized-storageethereumswarmdownloadfiles

Examples it gives

Download files from this Swarm reference
Retrieve a folder from decentralized storage

Update Feed

Update a mutable Swarm feed with new data for a given topic. Feeds provide mutable pointers to immutable content, enabling updatable resources on Swarm. Requires data and memoryTopic. Optional: postageBatchId.

decentralized-storageethereumswarmfeedsmutable

Examples it gives

Update my Swarm feed with new content
Write to a mutable feed topic

Read Feed

Retrieve the latest data from a Swarm feed by topic. Optionally specify an owner Ethereum address to read another account's feed.

decentralized-storageethereumswarmfeeds

Examples it gives

Read the latest data from my Swarm feed
Get the current value of a feed topic

Create Postage Stamp

Buy a postage stamp (storage voucher) based on required storage size in MB and duration (e.g. '1d', '1w', '1month'). Postage stamps are required to upload data to Swarm. Optional: label for human-readable identification.

decentralized-storageethereumswarmpostagepayments

Examples it gives

Buy a postage stamp for 100 MB lasting 1 month
Create a storage voucher for Swarm uploads

Get Postage Stamp

Retrieve details of a specific postage stamp by its batch ID, including remaining capacity and expiry information.

decentralized-storageethereumswarmpostage

Examples it gives

Check the status of my postage stamp
Get details for this batch ID

List Postage Stamps

List available postage stamps with optional filtering. Options: leastUsed (sort order), limit (max results), minUsage/maxUsage (percentage filters).

decentralized-storageethereumswarmpostage

Examples it gives

Show my available postage stamps
List stamps with less than 50% usage

Extend Postage Stamp

Increase the duration or storage capacity of an existing postage stamp by batch ID. Specify additional size in MB and/or additional duration.

decentralized-storageethereumswarmpostagepayments

Examples it gives

Extend my postage stamp by 1 week
Add 50 MB to this batch

Query Upload Progress

Check the upload progress of a deferred upload using a tag ID returned by upload_file or upload_folder operations. Used for monitoring large uploads that exceed the 5 MB sync threshold.

decentralized-storageethereumswarmuploadmonitoring

Examples it gives

Check the progress of my upload
Query upload status by tag ID

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: Ethersphere — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 0.1.0
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

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Capabilities: pushNotifications streaming
Agent card: https://docs.ethswarm.org/.well-known/agent-card.json

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