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📊 Intel view 📋 Audit JSON 🔄 Changelog
49
A2A v0.1.0

Ethereum Swarm Storage Agent

docs.ethswarm.org · Ethersphere

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.

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Trust score
49/100
grade D · 9 criteria
Uptime
100.0%
54 direct probes · 30d
~41 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

D
Conformance score: 49/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown click to collapse breakdown
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
54/54 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 12 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Ethersphere (https://www.ethswarm.org). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

1 snapshot Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-05-29 04:01:56 current 8753f5a8f2b9… view →
Uptime
100.0%
54 direct probes · 30d
Response
146ms
last direct probe
Skills
12
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://docs.ethswarm.org/.well-known/agent-card.json
Providerhttps://www.ethswarm.org
Docshttps://docs.ethswarm.org
About this provider off-card enrichment
SSL certificate
Let's Encrypt
expires 2026-11-25
Discovered via
manifests recrawl_hot github_code recrawl_warm

Skills · 12 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

Upload Data

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

No taxonomy category yet
decentralized-storageethereumswarmupload
Download Data

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

No taxonomy category yet
decentralized-storageethereumswarmdownload
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 re…

No taxonomy category yet
decentralized-storageethereumswarmuploadfiles
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 m…

No taxonomy category yet
decentralized-storageethereumswarmuploadfiles
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.

No taxonomy category yet
decentralized-storageethereumswarmdownloadfiles
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. Require…

No taxonomy category yet
decentralized-storageethereumswarmfeedsmutable
Read Feed

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

No taxonomy category yet
decentralized-storageethereumswarmfeeds
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 …

No taxonomy category yet
decentralized-storageethereumswarmpostagepayments
Get Postage Stamp

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

No taxonomy category yet
decentralized-storageethereumswarmpostage
List Postage Stamps

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

No taxonomy category yet
decentralized-storageethereumswarmpostage
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.

No taxonomy category yet
decentralized-storageethereumswarmpostagepayments
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…

No taxonomy category yet
decentralized-storageethereumswarmuploadmonitoring

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-10-25 10:15:06 200 ✗ 146ms
2026-10-24 19:35:18 200 ✗ 141ms
2026-10-24 08:14:02 200 ✗ 144ms
2026-10-23 18:44:12 200 ✗ 168ms
2026-10-23 06:35:00 200 ✗ 140ms
2026-10-22 17:36:22 200 ✗ 156ms
2026-10-22 04:11:47 200 ✗ 164ms
2026-10-21 15:07:44 200 ✗ 235ms
2026-10-21 02:10:17 200 ✗ 145ms
2026-10-20 09:27:09 200 ✗ 192ms

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/docs.ethswarm.org.svg)](https://agenstry.com/agents/docs.ethswarm.org)
[![Verified Business](https://agenstry.com/badge/docs.ethswarm.org/identity.svg)](https://agenstry.com/agents/docs.ethswarm.org)
[![Uptime](https://agenstry.com/badge/docs.ethswarm.org/uptime.svg)](https://agenstry.com/agents/docs.ethswarm.org)
[![A2A version](https://agenstry.com/badge/docs.ethswarm.org/protocol.svg)](https://agenstry.com/agents/docs.ethswarm.org)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "Ethereum Swarm Storage Agent",
  "description": "Decentralized storage agent powered by Ethereum Swarm. Upload, download, and manage data on the Swarm network \u2014 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.",
  "url": "https://docs.ethswarm.org",
  "provider": {
    "organization": "Ethersphere",
    "url": "https://www.ethswarm.org"
  },
  "version": "0.1.0",
  "documentationUrl": "https://docs.ethswarm.org",
  "mcpServerUrl": "https://github.com/ethersphere/swarm-mcp",
  "llmsTxtUrl": "https://docs.ethswarm.org/llms.txt",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "upload-data",
      "name": "Upload Data",
      "description": "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.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "upload"
      ],
      "examples": [
        "Store this text on Swarm",
        "Upload data to decentralized storage"
      ]
    },
    {
      "id": "download-data",
      "name": "Download Data",
      "description": "Download immutable data from Swarm using a content-addressed reference hash. Returns the original text data stored at that address.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "download"
      ],
      "examples": [
        "Retrieve data from Swarm by reference hash",
        "Download content from decentralized storage"
      ]
    },
    {
      "id": "upload-file",
      "name": "Upload File",
      "description": "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.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "upload",
        "files"
      ],
      "examples": [
        "Upload this file to Swarm",
        "Store a file on decentralized storage"
      ]
    },
    {
      "id": "upload-folder",
      "name": "Upload Folder",
      "description": "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.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "upload",
        "files"
      ],
      "examples": [
        "Upload this directory to Swarm",
        "Store a folder on decentralized storage"
      ]
    },
    {
      "id": "download-files",
      "name": "Download Files",
      "description": "Download files or folders from Swarm using a reference hash. Prioritized over download-data for unknown data types. Optional: filePath for local destination.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "download",
        "files"
      ],
      "examples": [
        "Download files from this Swarm reference",
        "Retrieve a folder from decentralized storage"
      ]
    },
    {
      "id": "update-feed",
      "name": "Update Feed",
      "description": "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.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "feeds",
        "mutable"
      ],
      "examples": [
        "Update my Swarm feed with new content",
        "Write to a mutable feed topic"
      ]
    },
    {
      "id": "read-feed",
      "name": "Read Feed",
      "description": "Retrieve the latest data from a Swarm feed by topic. Optionally specify an owner Ethereum address to read another account's feed.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "feeds"
      ],
      "examples": [
        "Read the latest data from my Swarm feed",
        "Get the current value of a feed topic"
      ]
    },
    {
      "id": "create-postage-stamp",
      "name": "Create Postage Stamp",
      "description": "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.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "postage",
        "payments"
      ],
      "examples": [
        "Buy a postage stamp for 100 MB lasting 1 month",
        "Create a storage voucher for Swarm uploads"
      ]
    },
    {
      "id": "get-postage-stamp",
      "name": "Get Postage Stamp",
      "description": "Retrieve details of a specific postage stamp by its batch ID, including remaining capacity and expiry information.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "postage"
      ],
      "examples": [
        "Check the status of my postage stamp",
        "Get details for this batch ID"
      ]
    },
    {
      "id": "list-postage-stamps",
      "name": "List Postage Stamps",
      "description": "List available postage stamps with optional filtering. Options: leastUsed (sort order), limit (max results), minUsage/maxUsage (percentage filters).",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "postage"
      ],
      "examples": [
        "Show my available postage stamps",
        "List stamps with less than 50% usage"
      ]
    },
    {
      "id": "extend-postage-stamp",
      "name": "Extend Postage Stamp",
      "description": "Increase the duration or storage capacity of an existing postage stamp by batch ID. Specify additional size in MB and/or additional duration.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "postage",
        "payments"
      ],
      "examples": [
        "Extend my postage stamp by 1 week",
        "Add 50 MB to this batch"
      ]
    },
    {
      "id": "query-upload-progress",
      "name": "Query Upload Progress",
      "description": "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.",
      "tags": [
        "decentralized-storage",
        "ethereum",
        "swarm",
        "upload",
        "monitoring"
      ],
      "examples": [
        "Check the progress of my upload",
        "Query upload status by tag ID"
      ]
    }
  ],
  "supportsAuthenticatedExtendedCard": false
}