Marches Expirations
by Sirenic in Onchain & crypto
Upcoming French public-contract EXPIRATIONS — the predictive layer over DECP open data: contracts whose estimated end date falls inside your window (fenetre_mois, 1-24 months), filterable by CPV prefix (cpv=45) and department, with buyer, incumbent holders, lot number, declared subcontracting, and amounts flagged firm price or ENVELOPE (call-offs, subsequent contracts, tranches, framework ceiling). Buyers re-tender 4 to 9 months before expiry: anticipation BEFORE publication. 50 per page.
https://api.sirenic.eu/v1/marches/expirations- Price
- $0.05
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 170 ms
- 234 ms slowest 5%
- Last check
- Passed
- 5 h ago, next any minute now
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
GET https://api.sirenic.eu/v1/marches/expirations
Each call costs $0.05 in USDC on Base, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
GET https://api.sirenic.eu/v1/marches/expirations?cpv=45&fenetre_mois=6Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
cpv | string | No | Optional CPV prefix, 2-8 digits (45 = construction, 9091 = cleaning) |
departement | string | No | Optional French department code: 2-3 digits, 2A or 2B (e.g. 69) |
fenetre_mois | string | No | Window in months, 1-24 (default 12): contracts whose estimated end falls inside |
page | string | No | Page number, 50 contracts per page (default 1) |
Example response
The provider's example. We can't check it without paying.
Example response, 37 lines
{
"filtres": {
"cpv": "45",
"departement": null,
"fenetre_mois": 6
},
"marches": [
{
"accord_cadre": false,
"acheteur": {
"nom": "DIRECTION REGIONALE FINANCES PUBLIQUES PAYS DE LA LOIRE ET DEPARTEMENT LOIRE ATLANTIQUE",
"siret": "13001292500017"
},
"code_cpv": "45421100-5",
"date_fin_estimee": "2026-09-02",
"date_notification": "2025-09-02",
"departement": null,
"duree_mois": 12,
"id": "2777529",
"lot_numero": null,
"modalites_execution": "Marchés subséquents",
"montant": 9788.8,
"montant_est_enveloppe": true,
"objet": "Travaux de menuiserie pour l'accueil de la DRFIP 44",
"sous_traitance_declaree": false,
"titulaires_sortants": [
{
"nom": "SOGEA ATLANTIQUE BTP",
"siren": "501383251"
}
]
}
],
"page": 1,
"pages": 685,
"total_marches": 34249
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.05.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sirenic.eu/v1/marches/expirations?cpv=45&fenetre_mois=6'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.sirenic.eu/v1/marches/expirations?cpv=45&fenetre_mois=6' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sirenic.eu%2Fv1%2Fmarches%2Fexpirations
const res = await pay("https://api.sirenic.eu/v1/marches/expirations?cpv=45&fenetre_mois=6");
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.get("https://api.sirenic.eu/v1/marches/expirations?cpv=45&fenetre_mois=6")
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 5 h ago | Passed | 402 | 165 ms | $0.05 |
| 10 h ago | Passed | 402 | 208 ms | $0.05 |
| 15 h ago | Passed | 402 | 161 ms | $0.05 |
| 20 h ago | Passed | 402 | 164 ms | $0.05 |
| 25 h ago | Passed | 402 | 167 ms | $0.05 |
Show 10 older checks
| 30 h ago | Passed | 402 | 170 ms | $0.05 |
| 34 h ago | Passed | 402 | 177 ms | $0.05 |
| 39 h ago | Passed | 402 | 166 ms | $0.05 |
| 43 h ago | Passed | 402 | 190 ms | $0.05 |
| 2 days ago | Passed | 402 | 234 ms | $0.05 |
| 2 days ago | Passed | 402 | 296 ms | $0.05 |
| 2 days ago | Passed | 402 | 200 ms | $0.05 |
| 3 days ago | Passed | 402 | 208 ms | $0.05 |
| 3 days ago | Passed | 402 | 159 ms | $0.05 |
| 3 days ago | Passed | 402 | 192 ms | $0.05 |