io.github.ExpertVagabond/hedera-mcp
NPM · @PURPLESQUIRREL/HEDERA-MCP · SCANNED SEP 22
Build-only Hedera (Hashgraph) MCP — 73 tools across all core services plus analytics reads.
Available components
Recent critical change
CVE-2026-41242 affects this package (2 Aug 2026). See the changelog before you install this server.
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security73
- No malware found by supply-chain analysis.Pass
- CVE check failed: an unpatched critical CVE affects this package; the score is capped at 0. See how to fix → View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 67 of 228 dependencies flagged as unhealthy (1 deprecated). View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 115 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability78
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 4522 tokens (~60/item across 75 items; 73 tools + 2 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management90
- Stability observed for 27 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage80
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 40% of tool parameters carry a description.Partial
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 13 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "hedera_transfer_hbar" implies "transfer" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 74 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the io.github.ExpertVagabond/hedera-mcp server?
io.github.ExpertVagabond/hedera-mcp runs locally as an npm package, launched with npx -y @purplesquirrel/hedera-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @purplesquirrel/hedera-mcp
claude mcp add expertvagabond-hedera-mcp -- npx -y @purplesquirrel/hedera-mcp
{
"mcpServers": {
"expertvagabond-hedera-mcp": {
"command": "npx",
"args": [
"-y",
"@purplesquirrel/hedera-mcp"
]
}
}
} {
"servers": {
"expertvagabond-hedera-mcp": {
"command": "npx",
"args": [
"-y",
"@purplesquirrel/hedera-mcp"
]
}
}
} codex mcp add expertvagabond-hedera-mcp -- npx -y @purplesquirrel/hedera-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"expertvagabond-hedera-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"@purplesquirrel/hedera-mcp"
],
"enabled": true
}
}
} openclaw mcp add expertvagabond-hedera-mcp --command npx --arg -y --arg @purplesquirrel/hedera-mcp
mcp_servers:
expertvagabond-hedera-mcp:
command: "npx"
args: ["-y", "@purplesquirrel/hedera-mcp"] {
"McpServers": {
"expertvagabond-hedera-mcp": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"@purplesquirrel/hedera-mcp"
]
}
}
} assistant mcp add expertvagabond-hedera-mcp -t stdio -c npx -a -y @purplesquirrel/hedera-mcp
{
"mcpServers": {
"expertvagabond-hedera-mcp": {
"command": "npx",
"args": [
"-y",
"@purplesquirrel/hedera-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 19 Sept 26 0
- Stability: pass → 0.80 functional
- 18 Sept 26 0
- Stability: 0.97 → pass security
- 16 Sept 26 0
- Security disclosure: unverified → fail ▼ functional
- 14 Sept 26 0
- Security disclosure: fail → unverified ▼ functional
- 12 Sept 26 0
- Stability: pass → 0.80 functional
- 11 Sept 26 0
- Stability: 0.97 → pass security
- 5 Sept 26 0
- Stability: pass → 0.80 functional
- 4 Sept 26 0
- Stability: 0.97 → pass security
- Security disclosure: unverified → fail ▼ functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 22 Sept 2026 · Analysed npm/@purplesquirrel/hedera-mcp@0.5.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 15 findings
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-5375-pq7m-f5r2 | CVE-2026-48068 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
| GHSA-99f4-grh7-6pcq | CVE-2026-48069 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
| GHSA-848j-6mx2-7j84 | CVE-2025-14505 | medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L | no |
| GHSA-2pr8-phx7-x9h3 | CVE-2026-44294 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | yes |
| GHSA-66ff-xgx4-vchm | CVE-2026-44293 | high | yes | |
| GHSA-685m-2w69-288q | CVE-2026-44289 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
| GHSA-75px-5xx7-5xc7 | CVE-2026-44291 | high | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | yes |
| GHSA-f38q-mgvj-vph7 | CVE-2026-54269 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | yes |
| GHSA-fx83-v9x8-x52w | CVE-2026-44292 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | yes |
| GHSA-j3f2-48v5-ccww | CVE-2026-59877 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | yes |
| GHSA-jggg-4jg4-v7c6 | CVE-2026-45740 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | yes |
| GHSA-jvwf-75h9-cwgg | CVE-2026-44290 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
| GHSA-q6x5-8v7m-xcrf | CVE-2026-44288 | medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | yes |
| GHSA-wcpc-wj8m-hjx6 | CVE-2026-48712 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
| GHSA-xq3m-2v4x-88gg | CVE-2026-41242 | critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 228 packages
| Packages resolved | 228 |
|---|---|
| Deprecated | 1 |
| Stale | 67 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
hedera_grant_kyc ~52
Build (unsigned): Grant KYC to an account for a token.
| Name | Type | Req | Description |
|---|---|---|---|
| accountId | string | yes | – |
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_mint_fungible ~54
Build (unsigned) a mint of additional fungible token supply.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | integer | yes | Amount in base units |
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_mint_nft ~68
Build (unsigned) a mint of one or more NFTs with metadata (e.g. IPFS CIDs).
| Name | Type | Req | Description |
|---|---|---|---|
| metadata | array | yes | Per-NFT metadata strings (≤100 bytes each) |
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_pause_token ~42
Build (unsigned) a token pause (halts all transfers of the token).
| Name | Type | Req | Description |
|---|---|---|---|
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_prng ~64
Build (unsigned) a pseudo-random number generation transaction (native on-chain RNG). Optionally bound to [0, range).
| Name | Type | Req | Description |
|---|---|---|---|
| payerAccountId | string | – | – |
| range | integer | – | If set, result is a uint in [0, range) |
No output schema declared.
No examples provided.
hedera_query_contract ~158
Read a contract view/pure function via Mirror Node eth_call (keyless, no gas). Pass { abi, functionName, args } for auto encode/decode, or raw dataHex.
| Name | Type | Req | Description |
|---|---|---|---|
| abi | array | – | Contract ABI (JSON array) — enables auto encode/decode |
| args | array | – | Function arguments (used with abi) |
| contractIdOrAddress | string | yes | Contract id (0.0.x) or 0x EVM address |
| dataHex | string | – | Fallback: ABI-encoded calldata as 0x-prefixed hex |
| fromAddress | string | – | Optional 0x caller address |
| functionName | string | – | Function name to call (used with abi) |
No output schema declared.
No examples provided.
hedera_reject_token ~64
Build (unsigned) a token rejection (HIP-904) — returns an unwanted token to its treasury.
| Name | Type | Req | Description |
|---|---|---|---|
| ownerAccountId | string | – | Holder rejecting (defaults to payer) |
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_revoke_kyc ~53
Build (unsigned): Revoke KYC from an account for a token.
| Name | Type | Req | Description |
|---|---|---|---|
| accountId | string | yes | – |
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_search_accounts_by_pubkey ~40
Find accounts controlled by a given public key from the Mirror Node.
| Name | Type | Req | Description |
|---|---|---|---|
| publicKey | string | yes | Public key (hex/DER) |
No output schema declared.
No examples provided.
hedera_sign_schedule ~40
Build (unsigned) a signature add to an existing scheduled transaction.
| Name | Type | Req | Description |
|---|---|---|---|
| payerAccountId | string | – | – |
| scheduleId | string | yes | – |
No output schema declared.
No examples provided.
hedera_submit_message ~52
Build (unsigned) a message submission to an HCS topic.
| Name | Type | Req | Description |
|---|---|---|---|
| message | string | yes | UTF-8 message payload |
| payerAccountId | string | – | – |
| topicId | string | yes | – |
No output schema declared.
No examples provided.
hedera_token_airdrop ~89
Build (unsigned) a fungible-token airdrop (HIP-904) — auto-associates recipients without prior opt-in.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | integer | yes | Amount in base units |
| fromAccountId | string | – | Sender (defaults to payer) |
| payerAccountId | string | – | – |
| toAccountId | string | yes | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_transfer_hbar ~93
Build (unsigned) an HBAR transfer from one account to another.
| Name | Type | Req | Description |
|---|---|---|---|
| amountHbar | number | yes | Amount in HBAR |
| fromAccountId | string | – | Sender (defaults to payer) |
| memo | string | – | Transaction memo |
| payerAccountId | string | – | – |
| toAccountId | string | yes | Recipient account id, e.g. 0.0.1234 |
No output schema declared.
No examples provided.
hedera_transfer_nft ~74
Build (unsigned) an NFT transfer of a specific serial between two accounts.
| Name | Type | Req | Description |
|---|---|---|---|
| fromAccountId | string | – | Current owner (defaults to payer) |
| payerAccountId | string | – | – |
| serial | integer | yes | – |
| toAccountId | string | yes | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_transfer_token ~74
Build (unsigned) a fungible token transfer between two accounts.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | integer | yes | Amount in base units |
| fromAccountId | string | – | Sender (defaults to payer) |
| payerAccountId | string | – | – |
| toAccountId | string | yes | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_unfreeze_token_account ~49
Build (unsigned): Unfreeze an account for a token.
| Name | Type | Req | Description |
|---|---|---|---|
| accountId | string | yes | – |
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_unpause_token ~37
Build (unsigned) a token unpause.
| Name | Type | Req | Description |
|---|---|---|---|
| payerAccountId | string | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
hedera_update_account ~63
Build (unsigned) an account update (memo, auto-association slots).
| Name | Type | Req | Description |
|---|---|---|---|
| accountId | string | yes | Account to update |
| maxAutomaticTokenAssociations | integer | – | – |
| memo | string | – | – |
| payerAccountId | string | – | – |
No output schema declared.
No examples provided.
hedera_update_contract ~55
Build (unsigned) an update to a contract's memo or admin key (requires admin key to sign).
| Name | Type | Req | Description |
|---|---|---|---|
| contractId | string | yes | – |
| memo | string | – | – |
| payerAccountId | string | – | – |
No output schema declared.
No examples provided.
hedera_update_file ~57
Build (unsigned) an update that replaces a file's contents and/or memo.
| Name | Type | Req | Description |
|---|---|---|---|
| contents | string | – | – |
| fileId | string | yes | – |
| memo | string | – | – |
| payerAccountId | string | – | – |
No output schema declared.
No examples provided.
hedera_update_token ~83
Build (unsigned) an update to a token's name, symbol, memo, or treasury (requires the admin key to sign).
| Name | Type | Req | Description |
|---|---|---|---|
| memo | string | – | – |
| name | string | – | – |
| payerAccountId | string | – | – |
| symbol | string | – | – |
| tokenId | string | yes | – |
| treasuryAccountId | string | – | – |
No output schema declared.
No examples provided.
hedera_update_topic ~47
Build (unsigned) an update to an HCS topic memo.
| Name | Type | Req | Description |
|---|---|---|---|
| memo | string | yes | – |
| payerAccountId | string | – | – |
| topicId | string | yes | – |
No output schema declared.
No examples provided.
hedera_wipe_token ~69
Build (unsigned) a wipe of fungible amount or NFT serials from an account.
| Name | Type | Req | Description |
|---|---|---|---|
| accountId | string | yes | – |
| amount | integer | – | – |
| payerAccountId | string | – | – |
| serials | array | – | – |
| tokenId | string | yes | – |
No output schema declared.
No examples provided.
What is the io.github.ExpertVagabond/hedera-mcp server?
io.github.ExpertVagabond/hedera-mcp is listed in the public MCP registry as io.github.ExpertVagabond/hedera-mcp. Build-only Hedera (Hashgraph) MCP, 73 tools across all core services plus analytics reads. This page covers its npm package (@purplesquirrel/hedera-mcp).
What tools does the io.github.ExpertVagabond/hedera-mcp server expose?
io.github.ExpertVagabond/hedera-mcp exposes 73 tools: hedera_create_account, hedera_transfer_hbar, hedera_update_account, hedera_delete_account, hedera_approve_hbar_allowance, and 68 more. Their descriptions and schemas cost roughly 4,495 tokens of context every time the server is loaded.
Is the io.github.ExpertVagabond/hedera-mcp server still maintained?
io.github.ExpertVagabond/hedera-mcp is still listed as active in the MCP registry. We last reached this channel on 22 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the io.github.ExpertVagabond/hedera-mcp server under?
io.github.ExpertVagabond/hedera-mcp declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.