Install Jentic One Beta
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the API Nogogo - Fiabilité des entreprises françaises, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fnogogo.fr%2Fnogogo" | shStep 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fnogogo.fr%2Fnogogo" | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
What an agent can do with API Nogogo - Fiabilité des entreprises françaises API.
Search French companies by name or keyword with the q parameter and a result limit
Pull a company's profile, financials, history, and legal events by its SIREN number
List a company's directors, optionally including inactive ones, and look up one director by hash_identite
Check reliability data for up to 100 SIRENs in a single bulk request
GET STARTED
Read the B2B barometer for a period with sector, region, and failure-signal breakdowns
Download the barometer for a period as a PDF report
Patterns agents use API Nogogo - Fiabilité des entreprises françaises API for, with concrete tasks.
★ Supplier due diligence by an agent through Jentic
A procurement agent vetting a new French supplier searches Jentic for a company lookup, gets the Nogogo search operation and its schema, and finds the supplier's SIREN from a name query. It then calls the financials, legal-events, and directors endpoints for that SIREN and summarises anything that warrants a closer look before the contract is signed.
Call GET /api/v1/companies/search with q='Boulangerie Martin Lyon', take the SIREN of the best match, then call GET /api/v1/companies/{siren}/legal-events and GET /api/v1/companies/{siren}/financials and summarise the results
Portfolio screening in bulk
Credit and accounts-receivable teams that track many French customers can refresh them together instead of one by one. POST /api/v1/companies/bulk takes a sirens array of 1 to 100 entries, so a nightly job can re-check a customer book in batches and flag changes.
Call POST /api/v1/companies/bulk with a sirens array of 100 customer SIREN numbers and list the companies whose data shows new legal events
Director background checks
Knowing who runs a company matters for onboarding and compliance reviews. GET /api/v1/companies/{siren}/directors lists the directors, with include_inactive_directors to show former ones, and GET /api/v1/directors/{hash_identite} returns the detail for one director so reviewers can see the other companies linked to them.
Call GET /api/v1/companies/{siren}/directors with include_inactive_directors=true, then call GET /api/v1/directors/{hash_identite} for each active director
B2B reliability trend reporting
Economists and risk teams following French business health can read the Nogogo B2B barometer by period. The summary, sectors, regions, failure-signals, and insights endpoints break down each period, the history endpoint takes a months parameter for trend lines, and the PDF endpoint returns a ready-made report.
Call GET /api/v1/barometer/latest, then call GET /api/v1/barometer/{period}/sectors for that period with order and limit set to return the ten weakest sectors
17 endpoints — the nogogo api looks up french companies by name or siren number and returns an assessment of their apparent reliability built from public data.
METHOD
PATH
DESCRIPTION
/api/v1/companies/search
Search French companies
/api/v1/companies/{siren}
Get a company by SIREN
/api/v1/companies/{siren}/financials
Get a company's financials
/api/v1/companies/{siren}/legal-events
Get a company's legal events
/api/v1/companies/{siren}/directors
List a company's directors
/api/v1/companies/bulk
Look up up to 100 SIRENs at once
/api/v1/barometer/latest
Get the latest B2B barometer
/api/v1/companies/search
Search French companies
/api/v1/companies/{siren}
Get a company by SIREN
/api/v1/companies/{siren}/financials
Get a company's financials
/api/v1/companies/{siren}/legal-events
Get a company's legal events
/api/v1/companies/{siren}/directors
List a company's directors
/api/v1/companies/bulk
Look up up to 100 SIRENs at once
/api/v1/barometer/latest
Get the latest B2B barometer
What agents get from Jentic-routed access to this vendor.
Setup
Wiring Nogogo by hand means getting an API key from the customer area, sending it in the X-API-Key header, and handling validation errors on SIREN and period inputs yourself. Through Jentic you install once, import Nogogo from the API Directory, store the key once, and your agent calls it.
Permission scoping
Nogogo puts the SIREN in the URL path (/api/v1/companies/{siren}/...), so a rule can pin your agent to one company's records and the operations you pick. You choose the operations it may call, so wider ones like bulk lookups or director detail are not included unless you add them.
Credential isolation
Your Nogogo API key is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'check a French company's legal events' or 'search French companies', and Jentic returns the matching Nogogo operation with its input schema so the agent calls the right endpoint without browsing the reference docs.
Alternatives and complements available in the Jentic catalogue.
Specific to using API Nogogo - Fiabilité des entreprises françaises API through Jentic.
What authentication does the Nogogo API use?
Per its OpenAPI spec, the Nogogo API authenticates with an API key sent in the `X-API-Key` header, available in the Nogogo customer area after you create an account. Through Jentic, the key is stored encrypted by your own Jentic One instance and injected at call time, so your agent never handles it.
Can I check many French companies at once with the Nogogo API?
Yes. POST /api/v1/companies/bulk takes a sirens array with between 1 and 100 SIREN numbers per request, so larger lists can be sent in batches of 100.
What are the rate limits for the Nogogo API?
The OpenAPI spec does not specify rate limits. Check https://nogogo.fr for the limits that apply to your plan.
How do I look up a French company's legal events with the Nogogo API through Jentic?
Install Jentic One with `curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh`, add Nogogo from the Jentic API Directory, and store your X-API-Key value. Your agent searches for 'search French companies' to find the SIREN, then calls GET /api/v1/companies/{siren}/legal-events. To run it on your own infrastructure, install Jentic One from its GitHub repo.
Can I limit what my agent is allowed to do with the Nogogo API?
Yes. For example, write a rule that allows GET /api/v1/companies/search plus the company detail, financials, and legal-events reads, and leaves out bulk lookups and director detail. The agent can then research single companies but cannot run large bulk checks or pull director records, and each call it makes is checked against that rule.
Is there a Nogogo MCP server?
You don't need an MCP server to give your agent the Nogogo API. Jentic connects it directly from the API Directory: import it, store your API key once, and your agent calls it, discovering operations on demand rather than loading tool definitions up front.
What does the Nogogo B2B barometer contain?
The barometer endpoints report on a given period: GET /api/v1/barometer/{period}/summary for the overview, /sectors and /regions for rankings with limit and order parameters, /failure-signals filtered by scope_type and scope_key, /insights, and /pdf for a downloadable report. GET /api/v1/barometer/history takes a months parameter for trends.
For Agents
Search French companies, pull a company's financials, legal events, history, and directors by SIREN, check up to 100 SIRENs in bulk, and read the periodic B2B barometer by sector and region.
Use for: I need to check whether a French supplier looks reliable before signing a contract, Search for a French company by name and get its SIREN, Get the legal events recorded for a company with SIREN 552100554, Retrieve the financials of a French company
Not supported: Does not file company documents, issue credit ratings or insurance, or cover companies outside France. Use for researching the apparent reliability of French companies from public data only.
The Nogogo API looks up French companies by name or SIREN number and returns an assessment of their apparent reliability built from public data. For a given SIREN it exposes the company record, its history, financials, legal events, and directors, and a bulk endpoint checks up to 100 SIRENs in one request. A separate B2B barometer reports reliability trends by period, with sector, region, failure-signal, and insight breakdowns plus a PDF edition.
This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use.
Base layer of spec validity and structural soundness.
Aggregated quality score from linter diagnostics, weighted by severity.
Percentage of `$ref` references that resolve successfully.
Checks whether the API description parses successfully and conforms to its declared specification (e.g., OpenAPI).
Structural correctness score based on schema issues using logarithmic dampening.
Clarity, completeness, and ingestion readiness for developers and tooling.
How richly the API is illustrated with examples.
Percentage of examples that conform to their schemas.
Percentage of operations with complete response definitions (success, client error, server error).
Health of API ingestion, bundling, and resolution within Jentic pipelines.
Semantic breadth, depth, and agent comprehension for AI systems.
Coverage of descriptions across API elements.
Coverage of RFC 9457 Problem Details for error responses.
Coverage, uniqueness, and casing consistency of operationIds for AI inference.
Coverage of summaries across operations/tags/info.
Functional utility, complexity comfort, and AI orchestration readiness.
Agent comfort level based on API operational and structural complexity.
Trust, risk posture, and security compliance.
Average quality of security schemes based on authentication method strength (weakest link for OAuth2).
Findability, semantic richness, and reasoning readiness.
Clarity and depth of descriptions across API elements.
Score it yourself
Every API in the directory is allowlisted, so you can re-score it with no key required.
npx @jentic/api-scorecard-cli score <openapi-url>