TensorFeed x402 Base Reader
NPM · @TENSORFEED/X402-BASE-MCP · SCANNED SEP 21
Read-only Base mainnet reader. Verifies x402 payment settlements + AFTA federation status.
Available components
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 Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 111 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency48
- 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 116 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability84
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 1097 tokens (~73/item across 15 items; 15 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management97
- Stability observed for 29 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 15 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 15 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 TensorFeed x402 Base Reader MCP server?
TensorFeed x402 Base Reader runs locally as an npm package, launched with npx -y @tensorfeed/x402-base-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 · @tensorfeed/x402-base-mcp
claude mcp add ai-tensorfeed-x402-base-mcp -- npx -y @tensorfeed/x402-base-mcp
{
"mcpServers": {
"ai-tensorfeed-x402-base-mcp": {
"command": "npx",
"args": [
"-y",
"@tensorfeed/x402-base-mcp"
]
}
}
} {
"servers": {
"ai-tensorfeed-x402-base-mcp": {
"command": "npx",
"args": [
"-y",
"@tensorfeed/x402-base-mcp"
]
}
}
} codex mcp add ai-tensorfeed-x402-base-mcp -- npx -y @tensorfeed/x402-base-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"ai-tensorfeed-x402-base-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"@tensorfeed/x402-base-mcp"
],
"enabled": true
}
}
} openclaw mcp add ai-tensorfeed-x402-base-mcp --command npx --arg -y --arg @tensorfeed/x402-base-mcp
mcp_servers:
ai-tensorfeed-x402-base-mcp:
command: "npx"
args: ["-y", "@tensorfeed/x402-base-mcp"] {
"McpServers": {
"ai-tensorfeed-x402-base-mcp": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"@tensorfeed/x402-base-mcp"
]
}
}
} assistant mcp add ai-tensorfeed-x402-base-mcp -t stdio -c npx -a -y @tensorfeed/x402-base-mcp
{
"mcpServers": {
"ai-tensorfeed-x402-base-mcp": {
"command": "npx",
"args": [
"-y",
"@tensorfeed/x402-base-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.
- 21 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 −2
- Stability: pass → 0.83 functional
- 16 Sept 26 0
- Stability: 0.97 → pass security
- 15 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 9 Sept 26 −3
- Stability: pass → 0.77 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 21 Sept 2026 · Analysed npm/@tensorfeed/x402-base-mcp@0.2.1
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 →
Dependencies 111 packages
| Packages resolved | 111 |
|---|---|
| Stale | 31 |
| 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 →
afta_federation_members List confirmed AFTA federation members ~57
Returns the canonical list of confirmed Agent Fair-Trade Agreement (AFTA) federation members as of this package version. Static curated list; chain through verify_afta_federation(domain) to confirm live cert posture per member.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
balance Get ETH balance ~38
Returns the native ETH balance of an address on Base mainnet.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | EVM address (0x-prefixed, checksummed) |
No output schema declared.
No examples provided.
block_number Get latest Base block number ~18
Returns the latest block number on Base mainnet.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
call Read-only contract call ~64
Performs an eth_call against a contract on Base mainnet. Read-only; never broadcasts a transaction.
| Name | Type | Req | Description |
|---|---|---|---|
| contract | string | yes | Contract address (0x-prefixed) |
| data | string | yes | ABI-encoded calldata (0x-prefixed hex, up to 64 KB) |
No output schema declared.
No examples provided.
decode_x402_payment_payload Decode an X-PAYMENT header payload ~100
Decodes a base64-encoded X-PAYMENT header payload per the Coinbase x402 V2 spec. Returns the parsed scheme, network, x402Version, EIP-3009 authorization, and signature. Pure offline decode; no signature is verified and no network call is made.
| Name | Type | Req | Description |
|---|---|---|---|
| payload | string | yes | Base64-encoded X-PAYMENT header value (standard or URL-safe). Decoded size capped at 64 KB. |
No output schema declared.
No examples provided.
get_tx_receipt Get transaction receipt ~52
Returns the receipt for a transaction on Base mainnet, including status, gas used, and a summary of emitted logs.
| Name | Type | Req | Description |
|---|---|---|---|
| tx_hash | string | yes | 32-byte tx hash (0x-prefixed) |
No output schema declared.
No examples provided.
parse_x402_manifest Fetch and parse a publisher's x402 manifest ~80
Fetches https://{domain}/.well-known/x402.json (or x402) and returns the structured manifest. Used to discover what an x402-paid publisher accepts (scheme, network, payTo, prices, paid endpoints).
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Bare hostname, e.g. "tensorfeed.ai" (no scheme or path) |
No output schema declared.
No examples provided.
probe_x402_endpoint Probe whether a URL is x402-paid ~81
Performs a GET against an https URL and reports whether the response looks like a canonical x402-paid endpoint (HTTP 402 with a JSON body containing accepts[]). Read-only. Does not pay, does not broadcast.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | Absolute https:// URL to probe (no http, no file, no IP; rejects localhost/private network targets) |
No output schema declared.
No examples provided.
recent_transfers Recent USDC transfers touching an address ~95
Returns USDC Transfer events involving the given address over the last N blocks on Base mainnet. Direction filter: in, out, or both.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | EVM address (0x-prefixed) |
| blocks_back | number | – | How many blocks back to scan (1-10000, default 1000) |
| direction | string | – | Filter to incoming, outgoing, or both (default both) |
No output schema declared.
No examples provided.
tf_payment_lookup Check if a tx was a USDC payment to TensorFeed ~112
On-chain lookup: was this transaction hash a USDC payment to TensorFeed's canonical payment wallet (0x549c82e6bFC54bdaE9A2073744CBC2AF5D1FC6D1) on Base mainnet? Returns structured details if yes. For credit attribution and endpoint mapping, the paying agent should call https://tensorfeed.ai/api/payment/history with its bearer token.
| Name | Type | Req | Description |
|---|---|---|---|
| tx_hash | string | yes | 32-byte tx hash (0x-prefixed) |
No output schema declared.
No examples provided.
usdc_balance Get USDC balance ~47
Returns the USDC balance of an address on Base mainnet (Circle native bridged USDC).
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | EVM address (0x-prefixed, checksummed) |
No output schema declared.
No examples provided.
usdc_recent_payments_to Recent USDC payments to an address ~80
Returns USDC transfers TO the given address over the last N blocks on Base mainnet. A convenience wrapper for x402 merchants verifying incoming agent payments.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | Recipient address (0x-prefixed) |
| blocks_back | number | – | How many blocks back to scan (1-10000, default 1000) |
No output schema declared.
No examples provided.
verify_afta_federation AFTA certification check for a domain ~65
Calls TensorFeed's canonical AFTA certification endpoint for a domain. Returns a scored checklist of which Agent Fair-Trade Agreement tenets the domain's public surfaces satisfy. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Bare hostname, e.g. "tensorfeed.ai" |
No output schema declared.
No examples provided.
verify_x402_settlement Verify an x402 payment settlement on Base ~123
Given a tx hash, expected recipient, and expected USDC amount, returns a structured verdict on whether the on-chain USDC Transfer event actually matches the claimed settlement. Use to independently verify any x402 payment receipt.
| Name | Type | Req | Description |
|---|---|---|---|
| expected_amount_usdc | string|number | yes | Expected USDC amount, e.g. "0.02" or 0.02 |
| expected_recipient | string | yes | Expected payTo wallet (0x-prefixed, checksummed) |
| tx_hash | string | yes | 32-byte tx hash (0x-prefixed) |
No output schema declared.
No examples provided.
x402_publisher_health Health and uptime of an x402 publisher ~85
Returns the latest x402 status snapshot for a given domain from TensorFeed's canonical hourly monitor: current outcome, latency, 24h/7d uptime, and the recent series of check results. Useful for agents picking which paid publisher to depend on.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | Bare hostname, e.g. "tensorfeed.ai" (no scheme or path) |
No output schema declared.
No examples provided.
What is the TensorFeed x402 Base Reader MCP server?
TensorFeed x402 Base Reader is an MCP server listed in the public MCP registry as ai.tensorfeed/x402-base-mcp. Read-only Base mainnet reader. Verifies x402 payment settlements + AFTA federation status. This page covers its npm package (@tensorfeed/x402-base-mcp).
Is the TensorFeed x402 Base Reader MCP server safe to use?
TensorFeed x402 Base Reader scores 86 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 21 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the TensorFeed x402 Base Reader MCP server expose?
TensorFeed x402 Base Reader exposes 15 tools: balance, usdc_balance, block_number, get_tx_receipt, call, and 10 more. Their descriptions and schemas cost roughly 1,097 tokens of context every time the server is loaded.
Is the TensorFeed x402 Base Reader MCP server still maintained?
TensorFeed x402 Base Reader is still listed as active in the MCP registry. We last reached this channel on 21 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 TensorFeed x402 Base Reader MCP server under?
TensorFeed x402 Base Reader declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.