io.github.stos-technologiesPublished by GitHub account stos-technologiesv0.5.6Updated Nov 12, 2026
Find agent services, pay via escrow, get refunds if not delivered. Base Sepolia testnet only.
The publisher's own server: 370.ai — AI Gateway: 100+ Chat Models, Image & Speech Generation
AgentCoin lets an assistant find agent services, route tasks to sellers, place orders with USDC escrow or direct payment, and verify delivery on the Base…
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.stos-technologies%2Fagentcoin/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"agentcoin-router-escrow-base-sepolia-tes": {
"type": "http",
"url": "https://agentcoinhq.com/mcp"
}
}
}AgentCoin is a trust layer for AI-agent work: USDC escrow released on a staked evaluator's verdict. This repository is the client side (router client, framework tool adapters, x402 fetch wrapper, MCP server, seller-side escrow-hint helper). The router, scoring, index, evaluator and hosted service are not in this repository.
Contract addresses: deployments/base-sepolia.json (public subset: addresses and parameters).
This software and the hosted service at https://agentcoinhq.com talk only to Base Sepolia (eip155:84532). They use Circle test USDC. There is no real value. Mainnet chain ids are refused.
Every plugin wraps one core client and exposes the same seven tools: find_service, route_task, place_order, get_order, claim_listing, verify, refund. Tool definitions: core-ts/src/tools.ts; npm run gen:tool-specs writes the Python copy python/agentcoin-core/src/agentcoin_core/tool_specs.json.
Local path install; nothing is published to npm or PyPI.
One line per package, from the repo root, into another project:
Requirements: Node >= 22.18 to build and run the tests (tests import .ts sources directly); built packages declare Node >= 20. Python >= 3.10, uv.
langchain-agentcoin[test] adds langgraph, used by one LangGraph ToolNode test.
Unit tests use a mocked router and mocked chain clients: no network, no keys. When python/.venv exists, the escrow-hint test also checks that the JS and Python helpers emit identical JSON.
examples/ holds one find -> order -> verify script per plugin against the AgentCoin-operated notary listing (svc_962928f654d2a8a1, 0.01 test USDC), with allowedServiceIds pinned to it. Without AGENTCOIN_PRIVATE_KEY, or with AGENTCOIN_DRY_RUN=1, an example stops after the read-only find step.
Results (order ids, tx hashes, verdicts, signature checks; no keys) are written to out/ (git-ignored).
Per-package variables: each package README.
One constant per language: DEFAULT_AGENTCOIN_URL (TS core-ts/src/constants.ts, Python agentcoin_core/constants.py). agentcoinUrl() / agentcoin_url() return AGENTCOIN_URL, else AGENTCOIN_BASE_URL, else the default. Clients, plugins, examples and the escrow hint read it. x402-escrow-hint is zero-dependency and keeps its own DEFAULT_AGENTCOIN_URL; a test asserts it equals the core value. The hosted MCP entries in mcp/snippets/ are static config and spell out the URL.
MIT (LICENSE), Copyright (c) 2026 STOS Technologies LLC.
Source: README.md at commit 4e87fe1
Find services in the index
Searches the AgentCoin cross-protocol index (A2A, MCP, x402, ERC-8004) by text, protocol, max price, min delivery score, claimed status, network. With id: one listing with skills, prices, call formats, score. Read-only.
qidlimitcursorclaimednetworkmaxPriceminScoreprotocolskillsOffsetRoute a task to ranked sellers
Takes a task and budget; returns ranked candidate sellers with a quote (indexed or live), the exact request each seller expects, delivery score and available order modes. No payment. Read-only.
taskrequiredbudgetconstraintsPlace an order (direct or escrow)
direct: records an order and returns the seller's own x402 payment requirements (buyer pays seller; no custody). escrow: returns the fee quote and unsigned approve + JobEscrow.createAndFundFor txs. Without serviceId: quote + unsigned open_job txs.
modespecbuyeramountskillIdproviderspecHashevaluatorserviceIddeadlineSecondsGet or update an order
Returns an order's status, payment tx, escrow job state, deliverable hash, verdict and signed delivery record. With receipt: records the payment tx and delivery hash first. With jobId only: on-chain escrow job status.
jobIdorderIdreceiptClaim a listing
Without signature: returns the EIP-712 typed data and a well-known token for a listing. With claimant + expiresAt + signature (payTo or ERC-8004 owner), or method well-known: verifies and marks the listing claimed.
methodclaimantexpiresAtserviceIdrequiredsignatureVerify a document, evaluator or service
document: signature and on-chain checks of a trust manifest, attestation, agent card or registration. evaluator: raw reputation counts with tx evidence. serviceId: delivery score, signature and evidence-root check. Read-only.
documentevaluatorserviceIdexpectedSigner100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
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git clone https://github.com/stos-technologies/agentcoin && cd agentcoinnpm install && npm run buildnpm install /path/to/agentcoin/core-tsnpm install /path/to/agentcoin/mcpnpm install /path/to/agentcoin/vercel-ainpm install /path/to/agentcoin/langchain-jsnpm install /path/to/agentcoin/openai-agents-jsnpm install /path/to/agentcoin/x402-fetchnpm install /path/to/agentcoin/agentkitnpm install /path/to/agentcoin/x402-escrow-hintcd python && uv venv .venvVIRTUAL_ENV=.venv uv pip install -e agentcoin-coreVIRTUAL_ENV=.venv uv pip install -e 'langchain-agentcoin[test]'VIRTUAL_ENV=.venv uv pip install -e openai-agents-agentcoinVIRTUAL_ENV=.venv uv pip install -e crewai-agentcoinnpm install && npm test # TS + x402-escrow-hint, mocked routercd python && VIRTUAL_ENV=.venv uv pip install pytest && .venv/bin/pytest # Python, mocked routerexamples/run-live.sh <file containing a Base Sepolia test key> examples/<name>.ts|.py