Staging Guide

Use Staging to test a PubFi integration before you move it to Production. Staging has separate web, API, and MCP roots.

Environment Roots

Surface	Staging root
Web and dashboard	`https://stg.pubfi.ai`
HTTP API	`https://api-stg.pubfi.ai`
Authenticated MCP	`https://mcp-stg.pubfi.ai`
Accountless MCP x402	`https://mcp-stg.pubfi.ai/x402`

Use only these exact HTTPS origins. Do not add a port, path, query, fragment, or user information to an origin. Set reusable shell variables:

export PUBFI_API_BASE='https://api-stg.pubfi.ai'
export PUBFI_MCP_ENDPOINT='https://mcp-stg.pubfi.ai'

Choose A Test Path

Goal	Required setup	Continue at
Test an HTTP route with account allocation	Staging sign-in and API key	Sign In And Create A Key
Run the documented MCP bridge smoke or API-key execution	Staging sign-in, API key, and MCP client	Connect An MCP Client
Inspect or pay an eligible accountless x402 request	Test wallet and current unsigned challenge; no PubFi account or API key	Base Sepolia Test Boundary

All paths must inspect the current Staging catalog and Runtime OpenAPI. Accountless x402 testers can skip the sign-in and API-key sections. The key manager requires billing-account administration access. If the dashboard has no billing account, or if the key manager is not available, ask your billing-account owner or administrator for access before you start.

Open https://stg.pubfi.ai/login.
Enter the email address that owns your staging dashboard access.
Request a sign-in code.
Enter the six-digit code from the email in the same browser tab.
Open the dashboard after sign-in.
In Manage application keys, create a key with a clear name such as staging-agent. The Staging runtime assigns the key environment; there is no environment selector.
Copy the full key when PubFi shows it. PubFi shows the secret only once.
Store the key in a secret manager. Do not put it in source code, shell history, logs, screenshots, or a tracked MCP configuration file.

Load the key into the current shell:

export STG_PUBFI_API_KEY='<Staging PubFi API key>'

Inspect The Current Contract

Fetch the public Registry catalog before each test:

curl --fail --silent --show-error \
  "${PUBFI_API_BASE}/v1/capabilities"

Fetch the Runtime OpenAPI:

curl --fail --silent --show-error \
  "${PUBFI_API_BASE}/openapi.json"

You can also open the interactive staging reference:

https://api-stg.pubfi.ai/reference

The catalog is the authority for the current generation, matcher, method, and readiness. OpenAPI contains only current ready operations. Refresh both surfaces when the generation changes.

Make An API-Key Call

Select a current ready operation whose matching operations[].billing.mode is quantro_priced. Set its exact path and method, then send the staging key:

export PUBFI_GATEWAY_PATH='<exact ready Quantro-priced path>'
export PUBFI_GATEWAY_METHOD='<GET or POST>'

curl --fail --silent --show-error \
  --request "${PUBFI_GATEWAY_METHOD}" \
  --header "Authorization: Bearer ${STG_PUBFI_API_KEY}" \
  "${PUBFI_API_BASE}${PUBFI_GATEWAY_PATH}"

X-PubFi-Api-Key is not accepted. Remove it before an accountless x402 request because its presence still selects the credential lane. For a different route, copy the exact matcher and method from the current catalog. Follow its query, body, response, and method-specific billing metadata. OpenAPI query and body fields guide request construction, but the gateway preserves a valid bounded RFC 3986 query and any bounded non-empty POST body bytes instead of applying the source schema online. The route selects the body media type. Empty bodies are omitted, and GET bodies are rejected. Exact free_health operations are public and use their advertised path without a :free suffix.

Connect An MCP Client

The staging Streamable HTTP endpoint and discovery manifest are:

https://mcp-stg.pubfi.ai
https://mcp-stg.pubfi.ai/.well-known/mcp.json

PubFi also provides a dependency-free local stdio bridge in examples/agents/pubfi-route-tools-mcp/. Start it from the repository root:

export PUBFI_MCP_ENDPOINT='https://mcp-stg.pubfi.ai'
export STG_PUBFI_API_KEY='<Staging PubFi API key>'
node examples/agents/pubfi-route-tools-mcp/server.mjs

Use this MCP client shape for the bridge:

{
  "mcpServers": {
    "pubfi-staging": {
      "command": "node",
      "args": ["examples/agents/pubfi-route-tools-mcp/server.mjs"]
    }
  }
}

Start the MCP client from an environment that supplies PUBFI_MCP_ENDPOINT and STG_PUBFI_API_KEY, or use the client’s secret-store integration. Environment-variable syntax in MCP configuration files is client-specific. Run the safe smoke:

export PUBFI_MCP_ENDPOINT='https://mcp-stg.pubfi.ai'
export STG_PUBFI_API_KEY='<Staging PubFi API key>'
node examples/agents/pubfi-route-tools-mcp/smoke_pubfi_route_tools_mcp.mjs

With the key, this smoke checks initialization, tool discovery, capability search, route planning, route explanation, schema readback, and Registry generation identity. It does not execute a provider route unless you explicitly set PUBFI_MCP_EXECUTE_LIVE=1 and supply an exact current path and method.

Base Sepolia Test Boundary

Staging is the PubFi Base Sepolia test boundary for accountless x402. The CAIP-2 network id is eip155:84532. To inspect a challenge, select a current ready method whose catalog billing mode is quantro_priced. Then call its exact route without a PubFi API key:

export PUBFI_X402_PATH='<exact ready Quantro-priced path>'

curl --silent --show-error \
  --request '<GET or POST>' \
  --dump-header - \
  "${PUBFI_API_BASE}${PUBFI_X402_PATH}"

Treat only a current unsigned 402 response as x402 availability evidence for the exact route and method. Require the live challenge to specify Base Sepolia before you sign anything. Use only testnet funds and a dedicated test wallet. Do not send a PubFi API key and PAYMENT-SIGNATURE in the same request. For MCP, use the official x402 metadata flow. Put the payment object in params._meta["x402/payment"] and connect to https://mcp-stg.pubfi.ai/x402. Do not convert it into an HTTP header. The authenticated root rejects payment metadata, and the /x402 endpoint rejects Bearer credentials. This staging boundary does not prove that x402 is available in Production. A checked-in route, OpenAPI path, or old challenge is not current availability evidence.

Troubleshooting

Symptom	Check
The email code fails.	Use the newest six-digit code. Request a new code if it expired. Wait for the displayed cooldown before another request.
The dashboard has no key manager.	Confirm that the staging identity has a billing-account membership and administration access.
The API returns `401`.	Confirm that you used `api-stg.pubfi.ai`, loaded `STG_PUBFI_API_KEY`, and sent one supported API-key header.
The route returns `404` or `405`.	Refresh the staging catalog and OpenAPI. Copy the exact current path and method.
The route is blocked or returns `503`.	Treat the route as unavailable. Do not bypass Registry readiness or provider-readiness gates.
An MCP tool call reports a missing key.	Set `STG_PUBFI_API_KEY` and confirm that `PUBFI_MCP_ENDPOINT` is exactly `https://mcp-stg.pubfi.ai`.
An x402 challenge does not appear.	Remove all PubFi API-key headers and confirm that the catalog marks the exact route and method as ready. If an unsigned call still does not return `402`, treat the lane as unavailable.

Move To Production

Treat Production as a separate environment:

Change the roots to https://pubfi.ai, https://api.pubfi.ai, and https://mcp.pubfi.ai.
Create and store a separate Production API key. Use PROD_PUBFI_API_KEY for the public examples.
Fetch the Production catalog and OpenAPI again.
Confirm each exact route, method, schema, and readiness state.
Run a non-executing MCP smoke before you enable deliberate live execution.
Production permits Base mainnet only when x402 is enabled for the exact route. A Production payment can have real financial value. Inspect the current catalog and unsigned challenge before you infer availability or sign.

See API Key And Runtime, MCP Client Setup, Accountless x402, and Runtime Endpoints for the shared contracts.

Start Here

Integrate

Concepts

Use Cases

Reference

Resources

Environment Roots

Choose A Test Path

Inspect The Current Contract

Make An API-Key Call

Connect An MCP Client

Base Sepolia Test Boundary

Troubleshooting

Move To Production

​Environment Roots

​Choose A Test Path

​Sign In And Create A Key

​Inspect The Current Contract

​Make An API-Key Call

​Connect An MCP Client

​Base Sepolia Test Boundary

​Troubleshooting

​Move To Production

Environment Roots

Choose A Test Path

Sign In And Create A Key

Inspect The Current Contract

Make An API-Key Call

Connect An MCP Client

Base Sepolia Test Boundary

Troubleshooting

Move To Production