Post an income statement and prove a payment

An income statement (ERC-8458) is written by someone who watched the agent earn, never by its owner: the ERC-8004 registry refuses an agent's own entries. Here another agent's token earns creator fees (you pay some test trading fees in, anyone may claim them, and they go to its fee recipient), you write the statement of that payment and post it as its writer, then prove the payment against the statement's Merkle root, on chain.

Looking for your wallet…Set up on the home page

2The steps

Each step asks your wallet once, one at a time, after it is simulated on the testnet. A step done before is skipped.

Let the launchpad take the trading fees
ERC-8459 · a transaction
Waiting
Pay trading fees into its token's stream
ERC-8459 · a transaction
Waiting
Claim them (anyone may): the payment to the agent's recipient
ERC-8459 · a transaction
Waiting
Write the income statement of that payment
ERC-8458 · built here, nothing to sign
Waiting
Post it as its writer (the testnet reputation registry)
ERC-8458 · a transaction
Waiting
Read the posted statement back: the payment and its proof
ERC-8458 · a read, nothing to sign
Waiting
Prove the payment on chain, as a lender would
ERC-8458 · a transaction
Waiting

With an AI agent

The same result, by an agent

An agent connected to the lab's MCP server at https://lab.priors.trade/mcp makes these calls in this order, signs what it gets back with its own testnet key, and gets the same result. The HTTP API answers the same requests (/openapi.json). The values are yours once your wallet and agent are set.

1. Let the launchpad take the trading fees ERC-8459
```
lab_prepare { "n": 8459, "action": "approve_launchpad_fee", "params": { "amount": "3" } }
```
GET /api/lab/prepare/8459/approve_launchpad_fee?amount=3
Sign and send the unsigned transaction it returns with your own testnet key, chain 46630.
2. Pay trading fees into its token's stream ERC-8459
```
lab_prepare { "n": 8459, "action": "pay_fee", "params": { "token": "", "amount": "3" } }
```
GET /api/lab/prepare/8459/pay_fee?amount=3
Sign and send the unsigned transaction it returns with your own testnet key, chain 46630.
3. Claim them (anyone may): the payment to the agent's recipient ERC-8459
```
lab_prepare { "n": 8459, "action": "claim", "params": { "token": "", "escrow": "launchpad" } }
```
GET /api/lab/prepare/8459/claim?escrow=launchpad
Sign and send the unsigned transaction it returns with your own testnet key, chain 46630.
4. Write the income statement of that payment ERC-8458
Build the statement file (lab-core's incomeStatementFile) of the claim's Transfer to the agent's fee recipient: one anchor, its Merkle root; the next step posts it.
5. Post it as its writer (the testnet reputation registry) ERC-8458
```
lab_prepare { "n": 8458, "action": "post_statement", "params": { "agent_id": "", "value": "<value from \"Write the income statement\">", "value_decimals": "6", "feedback_uri": "<feedbackURI from \"Write the income statement\">", "feedback_hash": "<feedbackHash from \"Write the income statement\">" } }
```
GET /api/lab/prepare/8458/post_statement?value=%3Cvalue+from+%22Write+the+income+statement%22%3E&value_decimals=6&feedback_uri=%3CfeedbackURI+from+%22Write+the+income+statement%22%3E&feedback_hash=%3CfeedbackHash+from+%22Write+the+income+statement%22%3E
Sign and send the unsigned transaction it returns with your own testnet key, chain 46630.
6. Read the posted statement back: the payment and its proof ERC-8458
```
lab_read { "n": 8458, "read": "payments", "params": { "agent_id": "", "writer": "<your address>", "statement_tx": "<the post's transaction>" } }
```
GET /api/lab/read/8458/payments?writer=%3Cyour+address%3E&statement_tx=%3Cthe+post%27s+transaction%3E
Its result fills the next step.
7. Prove the payment on chain, as a lender would ERC-8458
```
lab_prepare { "n": 8458, "action": "prove_payment", "params": { "root": "<root from \"Write the income statement\">", "...": "<the payment's params from the payments read>" } }
```
GET /api/lab/prepare/8458/prove_payment?root=%3Croot+from+%22Write+the+income+statement%22%3E&...=%3Cthe+payment%27s+params+from+the+payments+read%3E
Sign and send the unsigned transaction it returns with your own testnet key, chain 46630.

Connect it, for example in Claude Code: claude mcp add --transport http priors-lab https://lab.priors.trade/mcp

The drafts underneath

ERC-8458: Agent Income StatementsPublic, chained statements of what an agent's ERC-8004 agentWallet received, one leaf per transfer, rebuildable from token logs.
ERC-8459: Creator Fee RightsA launched token's creator fee stream, with its history and a recipient that only the recipient can change, so it can be pledged.

Post an income statement and prove a payment

1What you want

2The steps

The drafts underneath