x402 Universal Payer
io.github.nirholas/x402-bridge · Status: active
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- Registry name
io.github.nirholas/x402-bridge- Package coordinate
npm:@three-ws/mcp-bridge- Version
1.0.2- Listed in the registry
- 2026-08-19
- Changed in the registry
- 2026-08-19
- First seen by tracevero
- 2026-08-06
- Vendor's website
- https://three.ws
Pay any x402 endpoint on the open web: auto-paying bridge with Bazaar discovery and spend caps.
Vendor's own description, untranslated and unverified
Evidence for this page: The values on this page come from several collections. Each row therefore states its own origin. What the confidence levels mean
Measured values
| Credentials required | no Raw declaration – Required secret variables (raw): confirmed absent Raw declaration – Required secret headers (raw): confirmed absent Source: MCP-Register · collected on 2026-08-06 · derived |
|---|---|
| Execution location | local Raw declaration – Transports (raw): stdio Source: MCP-Register · collected on 2026-08-06 · derived |
| Path argument present | no Raw declaration – Path arguments (raw): confirmed absent Raw declaration – Path environment variables (raw): confirmed absent Source: MCP-Register · collected on 2026-08-06 · derived |
| Repository URL listed | yes Raw declaration – Repository (raw): https://github.com/nirholas/three.ws Source: MCP-Register · collected on 2026-08-06 · derived |
| Version | 1.0.2 Source: MCP-Register · collected on 2026-08-20 · self-declared |
Position within the holdings
How many of the 24,909 published entries carry the same measured value. A reference figure, not an assessment.
- Credentials requiredno20,618 of 24,909 carry this value (83 %)View these entries
- Execution locationlocal12,240 of 24,909 carry this value (49 %)View these entries
- Path argument presentno24,668 of 24,909 carry this value (99 %)View these entries
- Repository URL listedyes19,349 of 24,909 carry this value (78 %)View these entries
All 4 values together are carried by 8,631 of 24,909 entries.
This entry appears in these selections
- MCP servers without credentials20,618
- Locally executed MCP servers12,240
- MCP servers with a repository URL19,349
- Local MCP servers without credentials9,323
- Local MCP servers with a repository URL11,620
- MCP servers over stdio only9,947
- MCP servers as an npm package only7,247
- Local MCP servers as an npm package only7,159
- npm packages with a repository URL6,885
- MCP servers over stdio, as an npm package only6,270
- MCP servers available as a package only10,747
- MCP servers with npx as their only runtime hint1,099
The source's raw values23
Evidence for this page: The values on this page come from several collections. Each row therefore states its own origin.
| Environment variables (raw) | MCP_BRIDGE_EVM_PRIVATE_KEY, MCP_BRIDGE_SVM_PRIVATE_KEY, MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC, MCP_BRIDGE_MAX_TOTAL_ATOMIC, MCP_BRIDGE_ALLOWED_PAYTO, MCP_BRIDGE_ALLOWED_HOSTS, MCP_BRIDGE_ALLOW_HTTP, MCP_BRIDGE_DISCOVER_LIMIT, MCP_BRIDGE_BAZAAR_URL, MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER, MCP_BRIDGE_MAX_DEPOSIT_ATOMIC, X402_MCP_BRIDGE_CHANNELS_DIR, RPC_URL_8453 Source: MCP-Register · collected on 2026-08-06 · self-declared |
|---|---|
| Required secret variables (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-06 · self-declared |
| Transports (raw) | stdio Source: MCP-Register · collected on 2026-08-06 · self-declared |
| Path arguments (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-06 · self-declared |
| Repository (raw) | https://github.com/nirholas/three.ws Source: MCP-Register · collected on 2026-08-06 · self-declared |
| Package registries (raw) | npm Source: MCP-Register · collected on 2026-08-06 · self-declared |
| Required secret headers (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Path environment variables (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Remote URLs (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Remote hosts (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Registry status message (raw) | confirmed absent Source: MCP-Register · collected on 2026-08-16 · self-declared |
| First listed in the registry (raw) | 2026-08-19 Source: MCP-Register · collected on 2026-08-20 · self-declared |
| Last changed in the registry (raw) | 2026-08-19 Source: MCP-Register · collected on 2026-08-20 · self-declared |
| Schema version of the raw record (raw) | https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Delivery form (raw) | paket Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Repository platform (raw) | github Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Repository subfolder (raw) | mcp-bridge Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Package identifiers (raw) | @three-ws/mcp-bridge Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Package versions (raw) | 1.0.2 Source: MCP-Register · collected on 2026-08-20 · self-declared |
| Runtime hints (raw) | npx Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Environment variable formats (raw) | boolean, number, string Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Environment variable descriptions (raw) | MCP_BRIDGE_ALLOWED_HOSTS=Comma-separated hostname allowlist for outbound paid requests. When set, any other host is refused before a request is signed. · MCP_BRIDGE_ALLOWED_PAYTO=Comma-separated payee allowlist. When set, any payment whose payTo address is not listed is refused. · MCP_BRIDGE_ALLOW_HTTP=Set to 1 to allow http:// targets (local development only). https is enforced otherwise. · MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER=How many request-amounts to deposit at once when opening an EVM batch-settlement channel. · MCP_BRIDGE_BAZAAR_URL=x402 Bazaar discovery endpoint. Override to point at a self-hosted or alternative bazaar. · MCP_BRIDGE_DISCOVER_LIMIT=Max number of x402 Bazaar resources to register as dynamic tools at startup. Set 0 to disable discovery. · MCP_BRIDGE_EVM_PRIVATE_KEY=0x-prefixed 32-byte hex private key that funds USDC payments on EVM chains (Base, Arbitrum, …). At least one of the EVM/SVM keys is required. Treat like cash — use a dedicated low-balance wallet. · MCP_BRIDGE_MAX_DEPOSIT_ATOMIC=Hard cap in atomic units on a single batch-settlement channel deposit or top-up. · MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC=Per-call spending cap in atomic units (USDC has 6 decimals). Payments above this abort with a clear reason. · MCP_BRIDGE_MAX_TOTAL_ATOMIC=Cumulative session spending ceiling in atomic units. Once total spend would exceed it, further payments abort until restart. · MCP_BRIDGE_SVM_PRIVATE_KEY=Solana secret key that funds USDC payments: base58 64-byte secret key (Phantom / solana-keygen format) or a JSON array of 64 integers. At least one of the EVM/SVM keys is required. Treat like cash. · RPC_URL_8453=Per-chain RPC override, one variable per chain id (RPC_URL_<chainId>, e.g. RPC_URL_8453 for Base). Defaults to viem's public RPC for that chain. · X402_MCP_BRIDGE_CHANNELS_DIR=Directory for persisted batch-settlement channel state (survives client restarts). Source: MCP-Register · collected on 2026-08-16 · self-declared |
| Icon formats (raw) | image/svg+xml Source: MCP-Register · collected on 2026-08-16 · self-declared |
Changes
| 2026-08-20 | Version: 1.0.1 → 1.0.2 |
|---|---|
| 2026-08-20 | Last changed in the registry (raw): 2026-07-20 → 2026-08-19 |
| 2026-08-20 | First listed in the registry (raw): 2026-07-20 → 2026-08-19 |
| 2026-08-20 | Package versions (raw): 1.0.1 → 1.0.2 |
| 2026-08-16 | Last changed in the registry (raw): – → 2026-07-20 |
| 2026-08-16 | First listed in the registry (raw): – → 2026-07-20 |
| 2026-08-16 | Registry status message (raw): – → – |
| 2026-08-16 | Schema version of the raw record (raw): – → https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json |
| 2026-08-16 | Icon formats (raw): – → image/svg+xml |
| 2026-08-16 | Environment variable descriptions (raw): – → MCP_BRIDGE_ALLOWED_HOSTS=Comma-separated hostname allowlist for outbound paid requests. When set, any other host is refused before a request is signed. · MCP_BRIDGE_ALLOWED_PAYTO=Comma-separated payee allowlist. When set, any payment whose payTo address is not listed is refused. · MCP_BRIDGE_ALLOW_HTTP=Set to 1 to allow http:// targets (local development only). https is enforced otherwise. · MCP_BRIDGE_BATCH_DEPOSIT_MULTIPLIER=How many request-amounts to deposit at once when opening an EVM batch-settlement channel. · MCP_BRIDGE_BAZAAR_URL=x402 Bazaar discovery endpoint. Override to point at a self-hosted or alternative bazaar. · MCP_BRIDGE_DISCOVER_LIMIT=Max number of x402 Bazaar resources to register as dynamic tools at startup. Set 0 to disable discovery. · MCP_BRIDGE_EVM_PRIVATE_KEY=0x-prefixed 32-byte hex private key that funds USDC payments on EVM chains (Base, Arbitrum, …). At least one of the EVM/SVM keys is required. Treat like cash — use a dedicated low-balance wallet. · MCP_BRIDGE_MAX_DEPOSIT_ATOMIC=Hard cap in atomic units on a single batch-settlement channel deposit or top-up. · MCP_BRIDGE_MAX_PRICE_PER_CALL_ATOMIC=Per-call spending cap in atomic units (USDC has 6 decimals). Payments above this abort with a clear reason. · MCP_BRIDGE_MAX_TOTAL_ATOMIC=Cumulative session spending ceiling in atomic units. Once total spend would exceed it, further payments abort until restart. · MCP_BRIDGE_SVM_PRIVATE_KEY=Solana secret key that funds USDC payments: base58 64-byte secret key (Phantom / solana-keygen format) or a JSON array of 64 integers. At least one of the EVM/SVM keys is required. Treat like cash. · RPC_URL_8453=Per-chain RPC override, one variable per chain id (RPC_URL_<chainId>, e.g. RPC_URL_8453 for Base). Defaults to viem's public RPC for that chain. · X402_MCP_BRIDGE_CHANNELS_DIR=Directory for persisted batch-settlement channel state (survives client restarts). |
These are the 10 most recent changes to this entry. Full history
tracevero · https://tracevero.com/mcp/io-github-nirholas-x402-bridge